Title of Invention: System and method for controlling an equipment related to image capture Abstract: A method and system for controlling a setting of an equipment related to image capture comprises capturing position data and orientation data of a sensing device; determining position information of a region of interest (i.e. a node) to be treated by the equipment, relative to the position and orientation data of the sensing device; and outputting a control signal directed to the equipment, in order to control in real-time the setting of the equipment based on said position information of the region of interest. Detailed Description: Part general_description_paragraphs: Part FIELD: The present invention relates to the field of motion tracking in camera-use environments. More particularly, the present invention relates to a system and method for controlling a setting of a camera or related equipment. Part BACKGROUND: In camera environments (e.g. film, television, live entertainment, sports), a large variety of equipment exists to operate the functionalities of cameras, lighting, and sound. The control and interrelations of these functions determines the qualities of the final imagery and sound perceived by audiences. One such function is camera focus. “Pulling focus” or “rack focusing” refers to the act of changing the lens's focus distance setting in correspondence to a moving subject's physical distance from the focal plane. For example, if an actor moves from 8 meters away from the focal plane to 3 meters away from the focal plane within a shot, the focus puller will change the distance setting on the lens during the take in precise correspondence to the changing position of the actor. Additionally, the focus puller may shift focus from one subject to another within the frame, as dictated by the specific aesthetic requirements of the composition. This process of adjusting the focus is performed manually by the “First Assistant Camera” (first AC) or “Focus Puller”. Depending on the parameters of a given shot, there is often very little room for error. As such, the role of a focus puller is extremely important within the realm of a film production; a “soft” image will, in most circumstances, be considered unusable, since there is no way to fix such an error in post-production. One must also consider that an actor may not be able to duplicate his or her best performance in a subsequent take, so the focus puller is expected to perform flawlessly on every take. Because of these factors, some production personnel consider the focus puller to have the most difficult job on set. Though Focus Pullers can be very skilled, the current process still slows down production due to the complexity and difficulty of the task. Current film production begins with a blocking rehearsal, in which the various actors' positions are established. During the rehearsal, a camera assistant lays tape marks on the floor at all points where an actor pauses in movement. The actors then leave set to go through hair and makeup, and stand-ins come in to take their places at these various positions for the purposes of lighting, framing, and focus-mark setting. Once a camera position is established by the director of photography and camera operator, the first AC begins to measure the various distances between the actors' marks and the focal plane of the camera. These distances are recorded in a series of grease pencil/pen marks on the focus barrel of the lens, and/or the marking disc on the follow focus device. Using the stand-ins the marks are checked through the viewfinder and/or the onboard monitor for accuracy. If marks are repositioned in order to provide specific framing desired, the first AC must re-measure/re-set his marks accordingly. Additionally, the first AC may lay down specific distance marks on the floor which will be referenced during the take as actors move between their marks, in order to assist in accurately adjusting the focus to the correct intermediate distances. When the actors return to set, there is usually a rehearsal for camera in which the focus puller and operator will practice the shot and make sure everything has been set up properly. During a take, the focus puller modifies the focus based on the dialog, movement of the actors or subject, movement of the camera and compensates on the fly for actors missing their marks or any unforeseen movement. In cases where an obstruction prevents the focus puller from seeing all his marks, he may request the second AC to call the marks for him over a 2-way radio during the shot. In some situations, such as on long lenses, wide apertures, very close distances, or any combination of the three, a subject moving even a few millimeters may require immediate and very precise focus correction. After a take, if the focus puller feels he's made a mistake—be it a timing error, a missed mark, or any other issue which may have rendered some part of the take “soft”, he or she will typically report this to the operator (who most likely noticed the error in the viewfinder) or director of photography, and may ask for another take if another wasn't already planned. In addition to keen eyesight, reflexes, and intuition, the focus puller's primary tools are a cloth or fiberglass tape measure, steel tape measure, laser rangefinder, and in some cases an on-camera ultrasonic rangefinder which provides a real-time distance readout mounted on the side of the mattebox or camera body. In setups where the focus puller cannot touch the camera, such as on steadicam or crane shots, he or she will use a remote follow focus system, though some focus pullers prefer using a remote system at all times. In any of the above mentioned cases the focus puller is still required to adjust the focus manually during the course of the shot. The current approach is time consuming, difficult, and highly prone to error. It has long been a technical hurdle in cinematic moving image production and it imposes significant creative constraints on the director as well as increasing the cost of production due to unusable shots, slow setup times and the need for highly skilled and highly paid focus pullers. Known to the Applicant are semi-automatic focusing systems that depend on lasers, sonar, and facial/object recognition tracking. These methods are essentially variances of the same approach in that they each sense the “two dimensional plane” of the image and capture depth or distance information for any given area or pixel on that plane. For the most advanced systems, the operator of the system can then choose a point on the two dimensional image, at which time the distance data for that point will then be input to a motor which controls focus adjustment in real-time. These known methods present some limitations. More particularly, these systems are all “line of sight”. They cannot focus on an object that is not currently visible in the “two dimensional image plane”. The laser system requires an additional operator to target a laser on the desired subject. The facial recognition system will lose track of an object if it turns rapidly, goes off frame or disappears behind another subject or object. Perhaps most importantly, none of these systems is truly capable of the extreme accuracy required for the most challenging focus tasks, i.e a long focal length with a wide aperture when the subject is moving rapidly and the focus point on the subject is very specific, for example the eye, because for both the LIDaR (Light Detection and Ranging) and laser systems a human operator must keep track of the eye in real-time either by moving a cursor on a screen or by aiming an actual laser. It should also be noted that shining a laser into a person's eye may be undesirable. While the facial recognition system could in theory track and eye, there is a need to provide an increased level of precision and accuracy. Known to the Applicant are U.S. Pat. No. 5,930,740 (MATHISEN), U.S. Pat. No. 8,448,056 (PULSIPHER), and U.S. Pat. No. 8,562,433 (LARSEN); United States Patent Applications having publication Nos. 2008/0312866 (SHIMOMURA), 2010/0194879 (PASVEER), 2013/0188067 (KOIVUKANGAS), 2013/0222565 (GUERIN), 2013/0229528 (TAYLOR), and 2013/0324254 (HUANG), and Japanese Patent Application having publication No. JP 2008/011212 (KONDO). Hence, in light of the aforementioned, there is a need for an improved system which, by virtue of its design and components, would be able to overcome some of the above-discussed prior art concerns. Part SUMMARY: The object of the present invention is to provide a system which, by virtue of its design and components, satisfies some of the above-mentioned needs and is thus an improvement over other related systems and/or methods known in the prior art. An object of the present invention is to provide a system and method for controlling a setting of an equipment related to image capture. Such equipment may include a camera, and the setting may be for example a focus setting, a zoom setting, an aperture setting, an inter ocular lens angle setting, and/or control pan setting, a tilt setting, a roll setting of the camera, and/or positional setting of the camera, and/or a lighting equipment setting, and/or a sound equipment setting, and/or the like. In accordance with an aspect of the present, there is provided a method for controlling a setting of an equipment related to image capture, comprising: a) capturing position data and orientation data at a sensing device; b) determining, by means of a processor, position information of a region of interest to be treated by the equipment, from the position data and orientation data having been captured; and c) outputting, via an output port of the processor, a control signal directed to the equipment, in order to control in real-time the setting of the equipment based on said position information of the region of interest. The “equipment” may comprise an image capture equipment, such as a camera to capture an image of the subject (either a photo or video image) and/or it may comprise equipment which cooperates with an image capture equipment, such as lighting equipment, sound capture equipment, and/or the like. In accordance with another aspect of the present, there is provided a system for controlling a setting of an equipment related to image capture, comprising: a sensing device configured to capture position data and orientation data; a processor being in communication with the sensing device, the processor being configured to determine position information of a region of interest to be treated by the equipment, from the position data and orientation data; and an output port integrated in the processor, configured to output a control signal directed to the equipment, in order to control in real-time the setting of the equipment based on said position information of the region of interest. In accordance with another aspect of the present, there is provided a non-transitional computer-readable storage having stored thereon data and instructions for execution by a computer, said data and instructions comprising: code means for receiving position data and orientation data of a sensing device; code means for determining position information of a region of interest to be treated by the equipment, from the position and orientation data; and code means for outputting a control signal directed to the equipment, in order to control in real-time the setting of the equipment based on said position information of the region of interest. In accordance with another aspect of the present, there is provided a method for controlling a setting of an equipment related to image capture, comprising: a) storing in a memory, one or more identifier, each identifier being associated to a predefined region of interest to be treated by the equipment and storing corresponding position information; b) receiving, at a processor, a selection of said one or more identifier; and c) outputting, via an output port of the processor, a control signal directed to the equipment, in order to control in real-time the setting of the equipment based on the position information of the selected one of said one or more predefined region of interest. In accordance with another aspect of the present, there is provided a system for controlling a setting of an equipment related to image capture, comprising: a memory configured to store one or more identifier of a predefined region of interest to be treated by the equipment and corresponding position information; a processor being in communication with the memory and configured to receive a selection of said one or more identifier; and an output port being integrated with the processor, being configured to output a control signal directed to the equipment, in order to control in real-time the setting of the equipment based on the position information of the selected one of said one or more predefined region of interest. According to embodiments, the components of the above system are provided in a central device (for example a computer), the system further comprising one or more user device (for example a computer, which may be a tablet computer with a touch screen) for receiving user commands, the user device being in communication with the central device. More particularly, the user device may be configured to present the one or more predefined region of interest to a user via a graphical user interface, as well as to receive from the user a selection of said one or more region of interest, and to transmit references to said one or more region of interest to the central device. In accordance with another aspect of the present, there is provided a non-transitional computer-readable storage having stored thereon one or more identifier of a predefined region of interest to be treated by the equipment and corresponding position information, the computer-readable storage further comprising data and instructions for execution by a processor, said data and instructions comprising: code means for receiving a selection of said one or more identifier; and code means for outputting a control signal directed to the equipment, in order to control in real-time the setting of the equipment based on the position information of the selected one of said one or more predefined region of interest. In accordance with another aspect of the present, there is provided a method for controlling a setting of an equipment related to image capture, comprising: a) capturing, by means of a visibility independent sensing device, position data at the sensing device; b) determining, by means of a processor, position information of a region of interest to be treated by the equipment, from the position data; and c) outputting, by means of an output port of the processor, a control signal directed to the equipment, in order to control in real-time the setting of the equipment based on said position information of the region of interest. In accordance with another aspect of the present, there is provided a system for controlling a setting of an equipment related to image capture, comprising: a visibility independent sensing device configured to capture position data; a processor being in communication with the sensing device, the processor being configured to determine position information of a region of interest to be treated by the equipment, based on the position and orientation data; and an output port integrated with the processor being configured to output a control signal directed to the equipment, in order to control in real-time the setting of the equipment based on said position information of the region of interest. According to embodiments, the system further comprises a controller being in communication with the output port and being configured to control the setting of the equipment with said control signal. According to embodiments, the setting may comprise: a focus setting of a camera, a zoom setting of the camera, an aperture setting of the camera, an inter ocular lens angle setting of the camera, a pan setting of the camera, a tilt setting of the camera, a roll setting of the camera, a positional setting of the camera, a lighting equipment control setting, and/or a sound equipment setting In accordance with another aspect of the present, there is provided a non-transitional computer-readable storage having stored thereon data and instructions for execution by a computer having an input port for receiving position data from a visibility independent sensing device, said data and instructions comprising: code means for determining position information of a region of interest to be treated by the equipment, based on the position data and orientation data; and code means for outputting a control signal directed to the equipment, in order to control in real-time the setting of the equipment based on said position information of the region of interest. According to yet another aspect of the present, there is provided a system for controlling a setting of an equipment related to image capture, comprising: a) a sensor to be mounted on a subject to be captured by the camera, adapted for capturing three-dimensional positional data; b) a processor adapted to communicate with the sensor for receiving the positional data and for generating a control signal based on the positional data; and c) a controller adapted to communicate with the processor, in order to control, in response to the control signal, the setting of the equipment. In particular embodiments, the setting may include: a focus setting, a zoom setting, an aperture setting, an inter ocular lens angle setting, and/or control pan setting, a tilt setting, a roll setting of the camera, positional setting of the camera, a lighting equipment setting, a sound equipment setting, and/or any combination thereof. In particular embodiments, the orientation data is captured by the sensor device in all three degrees of freedom, for example in Euler angles of azimuth, elevation and roll (A,E,R). In such embodiments, the processor is adapted to calculate a position of a point of focus, or “node” in relation to the positional and orientation data representing the location of the sensor device. The processor is thus adapted to generate a control signal based on the position of the node. By “point of focus” or “node” it is meant a particular point or region of intereston the subject based on which the setting (for example, focus, zoom, aperture, lighting, sound, etc.) of the equipment is to be controlled. This “node” is sometimes referred to as the “tip offset” in motion tracking systems that provide both position and orientation for example, in some situations where the node does not have the identical coordinate of the sensor but is at a fixed distance from the sensor. For example, the node may correspond to an eye of a person, while the positional and orientation data corresponds to the back of the person's head where the sensor is located. Thus, the focus, zoom, aperture, inter ocular angle, control pan, tilt, roll of the camera, position of the camera, lighting equipment, and/or sound equipment may be set depending on the particular positioning of the person's eye, through a calculation from the position and orientation of the sensor. In particular embodiments, the system further comprises a sensor to be mounted on the camera, namely in case the camera moves in relation to the subject to be captured. According to yet another aspect of the present, there is provided a method for controlling a setting of an equipment related to image capture, comprising: capturing three-dimensional positional data related to a subject to be captured by a camera; generating a control signal based on the positional data; and controlling, in response to the control signal, the setting of the equipment. According to yet another aspect of the present, there is provided a non-transitional processor-readable storage medium for controlling a setting of an equipment related to image capture, the storage medium comprising data and instructions for execution by a processor to: receive three-dimensional positional data related to a subject to be captured by a camera; generate a control signal based on the positional data; and transmit the control signal to a controller for controlling the setting of the equipment. According to yet another aspect of the present, there is provided a system for controlling a setting of an equipment related to image capture, comprising: a sensor and transmitter to be mounted on a subject to be captured by a camera, adapted for capturing positional and/or orientation data; a processor adapted to communicate with the sensor's transmitter for receiving the positional data and for sending a control signal based on said positional and/or orientation data; and a controller adapted to communicate with the processor, in order to receive the control signal and to control, in response to the control signal, the setting of the equipment. In accordance with still another aspect, there is provided a method associated to the above-mentioned system. In accordance with still another aspect, there is provided a non-transitional processor-readable storage medium comprising data and instructions to carry out the method associated to the above-mentioned system. Embodiments of the present invention are advantageous in that a use of motion tracking data with very specific properties to create multiple predefined positional and directional ‘nodes’ in three-dimensional space, an increased level of equipment control and automation is achievable in a wide variety of moving and still photographic environments. Embodiments of the present invention are advantageous in that they allow, with or without user interaction, real-time tracking and/or choosing from multiple pre-defined stationary or moving points in a three-dimensional space (nodes) and without any additional manual intervention, the choosing of any of these nodes at any time using a software interface or mechanical dial or other mechanical input device. In an exemplification of focus control, upon a user selecting a desired node, the system automatically adjusts focus to that node and maintains focus on that node even if the node and the camera are moving. It will also enable focus on a node that is not in the current field of view, allowing objects to be in focus the instant they enter the composition or appear from behind other objects (doorways, walls, vehicles, etc.). The objects, advantages and features of the present invention will become more apparent upon reading of the following non-restrictive description of preferred embodiments thereof, given for the purpose of exemplification only, with reference to the accompanying drawings. Part DETAILED DESCRIPTION OF EMBODIMENTS: In the following description, the same numerical references refer to similar elements. The embodiments mentioned and/or geometrical configurations and dimensions shown in the figures or described in the present description are embodiments of the present invention only, given for exemplification purposes only. Broadly described, the system and method for controlling a setting of a camera, according to a particular embodiment, uses a motion capture or global (or local) positioning system to generate a three-dimensional positional and orientation data. This data is processed by software that computes in real-time the position and orientation in three-dimensional space along with other dimensional calculations including the relative distance data between the desired subject and the camera. This data is then used to control equipment such as servo motors for manipulating camera related equipment such as lens focus, lens aperture, and camera remote heads, all in real-time. More particularly, the present concerns, according to a particular embodiment, controlling focus and composition, and involves creating pre-defined points in a three-dimensional space, hereafter referred to as “nodes”. A node may either be a fixed node in a room, i.e. a vase of flowers. Or it may be a moving node, i.e. a person or animal. Fixed nodes do not require a sensor if the camera is not moving, or if the camera has a sensor. Moving nodes require a sensor as do moving cameras. Since the motion tracking system essentially creates the possibility of drawing an infinite number of defined points in a given three-dimensional space, interfacing with this data allows for vastly more complex and liberating creative and practical possibilities. One important feature of “nodes” as defined and used in this system is that they have both positional and orientation data: this allows for intelligent operations to be performed, such as pulling focus automatically between left and right eye—see “Auto Profiling” later in this document. Thus when referring to FIG. 1, there is provided a system 10 for controlling a setting of an equipment 112 related to image capture, such as a camera 12. The system 10 comprises one or more sensing device 114, such as sensors 14, configured to capture position data and orientation data at the sensing device. The system 10 further comprises a processor 16 embedded in a data processing device 28 (also referred to herein as “data processing unit”). The processor 16 is in communication with the sensing devices 114, and configured to determine position information of a region of interest to be treated by the equipment 112, based on the position and orientation data. The processor 16 further comprises an output port 43 configured to output a control signal directed to the equipment 112, in order to control in real-time the setting of the equipment 112 based on said position information of the region of interest. The system 10 further comprises a controller 118 being in communication with the output port 43 and being configured to control the setting of the equipment 112 with the control signal. The system 10 further comprises a memory 132, such as RAM 32, for storing the position data and orientation data. The system 10 further comprises the equipment 112. In accordance with this embodiment, the sensing devices 114 are visibility independent (i.e. non line-of-sight sensors), and comprise a transmitter 22. The system 10 further comprises a receiver 26 which is in communication between the transmitter 22 and the processor 16. The system 10 further comprises a user device 40 comprising a user interface 42 and which is in communication with the data processing device 28 over a wireless communication network 39. More particularly, FIG. 1 shows a system 10 for controlling a setting of a camera 12. The system 10 comprises sensors 14, each for mounting on a subject to be capture by the camera 12, and each being adapted for capturing three-dimensional positional data based on the location of each sensor 14. The system 10 further comprises a processor 16 adapted to communicate with the sensor 14 for receiving the positional data and for sending a control signal based on the positional data. The system 10 further comprises a controller 18 adapted to communicate with the processor 16, in order to control, in response to the control signal, the setting of the camera 12. As also shown in FIG. 1, the sensors 14, are each hardwired 20 to a hub/transmitter 22. The hub/transmitter 22 communicates via wireless radio frequency (RF link) communication means 24 to a Universal Serial Bus (USB) receiver 26, which in turn is connected via a USB connection 27 to a data processing device 28, having the processor 16 embedded therein. The data processing device 28 further comprises a power supply 30 and a DDR3 random access memory (RAM) 32, and embeds a Flash non-volatile computer storage 34. The data processing device 28 further comprises a WiFi communication module 36 and a Zigbee™ wireless communication module 38 for communicating over a wireless data network 39 with a user device 40, which in this example is an iPad™, and includes a user interface 42. It is to be understood that the iPad™ may be replaced or combined with any other suitable computer device such as for example and Android™ tablet computer. The controller 18 is connected to the data processing device 28 over a hardwire 44. The controller 18 is attached in an area of the camera 12, and comprises a Cypress PSOC™ 5 LP micro-controller unit (MCU) 46, as well as a power supply 48. H-bridges 50, 52, 54 connect the controller 18 to respective servo motors 56, 58, 60 which automatically operate particular settings of the camera 12, namely focus, iris and zoom respectively. It is to be understood, that according to alternative embodiments, the above-mentioned components may be interconnected in any suitable manner via any suitable communication means. Indeed and for example, in the embodiment shown in FIGS. 2A and 2B, a plurality of cameras 12 are controlled by the system 10′. Each camera 12 is connected to a “slave” data processing device 28b, which is operable via corresponding user interfaces of user devices 40. The “slave” data processing devices 28b are in communication with a “master” data processing device 28a. The remaining components of FIGS. 2A and 2B refer to similar components shown in FIG. 1. In the embodiments shown in FIGS. 1 and 2, the sensor system is provided by a magnetic motion tracking system. More particularly, the sensor 14 is provided by an induction coil and the system 10, 10′ further includes an alternating current (AC) magnetic source generator (see FIG. 3). The hub 22 powers the sensor 14, interprets the data and transmits the positional data over radio frequency 24. Preferably, the magnetic source is mounted together with onboard power, on a custom extendable pole mount. Optionally, a radio frequency repeater may be provided to extend the range of data transmission coming from the motion capture system. The USB RF receiver needs to get data from the sensor and transmit it to the camera. If the distance between camera and sensor is very large (for example when using a 2000 mm or 200 mm lens for car commercials etc) then it may be necessary to boost the range. Also optionally, a USB repeater may be provided in order to extend the range of data transmission coming from motion capture system. The user interface 42 of each user device 40, i.e. iPad™, includes a touch screen, and the user device 40 is adapted to execute interface software which communicates with the central controller(s) 28, 28a, 28b. Optionally, mechanical input devices (e.g. focus control dial or slider) may be provided to act as an analog/digital interface to add additional control features to the software. For example, as illustrated in FIGS. 2A and 2B, one of the user devices 40 has a user interface 42 including a focus pulling knob 62. The central data processing device 28, operates with a Linux™ operation system, and performs much of the processing to control the servo motor(s) 56, 58, 60. As previously mentioned, the servo motors 56, 58, 60, mechanically adjust camera settings, such as, for example, focus, zoom, aperture and/or control pan, tilt, roll, and/or the like. It is to be understood that depending on particular embodiments, the setting may include any one of the following or a combination thereof: a focus setting of a camera, a zoom setting of the camera, an aperture setting of the camera, an inter ocular lens angle setting of the camera, a pan setting of the camera, a tilt setting of the camera, a roll setting of the camera, a positional setting of the camera, a lighting equipment control setting, a sound equipment setting, and the like. In the context of the present description, the term “processor” refers to an electronic circuitry configured to execute computer instructions, such as a central processing unit (CPU), a microprocessor, a controller, and/or the like. A plurality of such processors may be provided, according to embodiments of the present invention, as can be understood by a person skilled in the art. The processor may be provided within one or more general purpose computer, for example, and/or any other suitable computing device. Still in the context of the present description, the term “storage” refers to any computer data storage device or assembly of such devices including, for example: a temporary storage unit such as a random-access memory (RAM) or dynamic RAM; a permanent storage such as a hard disk; an optical storage device, such as a CD or DVD (rewritable or write once/read only); a flash memory; and/or the like. A plurality of such storage devices may be provided, as can be understood by a person skilled in the art. Moreover, “computer-readable storage” refers to any suitable non-transitory processor-readable storage medium or computer product. Other components which may be used with the above-described system 10, 10′ include: a custom modular system of non-metallic pole mounts for source placement, namely a carbon fiber scaffolding rig with pre-determined sizes so that it can be quickly and easily set up, when using more than two sources. various clips and brackets for mounting sensors and magnetic sources to cameras, subjects and objects; and various instruments for facilitating easy measurement of node offsets and placement and source locations. Namely, FIG. 3 shows a single or double boom pole source mount to be used with the system, according to an embodiment. Moreover, FIG. 4 shows a camera arm source mount to be used with the system, according to an embodiment. Moreover, FIG. 5 shows a camera sensor mount to be used with the system, according to an embodiment, with portions thereof being shown in FIG. 5A-5C. Furthermore, FIG. 6 shows a modular source mounting system to be used with the system, according to an embodiment. Operation of the System As previously mentioned, embodiments of the present allow controlling focus and composition and involves creating pre-defined points in a three-dimensional space, referred to herein as “nodes”, having both positional and orientation data. A node can either be a fixed node in a room, i.e a vase of flowers. Or it can be a moving node, i.e a person or animal. Fixed nodes do not require a sensor if the camera is not moving, or if the camera has a sensor. Moving nodes require a sensor as do moving cameras. In operation, with reference to FIG. 1 the sensor 14 generates a coordinate representing it's physical location, for example an X,Y,Z coordinate of a Cartesian coordinate system and/or an Azimuth, Elevation, Roll (A, E, R) which represents the orientation of the sensor. For example, in the case where the sensor 14 is placed on the back of the head of a person being capture by the camera 12, the information generated by the sensor will indicate the location of the sensor and whether the person's head is facing forward, backward, etc. The processor 16 receives the position and orientation information and calculates the position of the “node”. For example, in the case where the sensor 14 is placed on the back of the head of a person, a “node” may correspond to one of the eyes of the person. Thus, the processor 16 seeks the predetermined position of the person's eye in relation to the sensor 14, and calculates the location of the eye, i.e. the point of focus, based on the location and orientation information received. The processor then calculates the distance between the camera 12 and the point of focus. Based on the calculated distance, the processor 16 outputs a control signal in order to control settings of the camera 12. Thus, as better shown in FIG. 1B with further reference to FIG. 1A, there is provided a method 200 for controlling a setting of the equipment 112. The method 200 comprises capturing 210, by means of the sensing device 114, three-dimensional position data and orientation data of the sensing device 114, and storing 212 the position data and orientation data in the memory 132. The position data and orientation data is captured by the sensing device which produces a coordinate representing a physical location and a property representing the orientation of the sensing device 114. The method 200 further comprises determining 214, by means of the processor 16, position information of a region of interest to be treated by the equipment, i.e. a “node”, based on the three-dimensional position data and orientation data. The node and the sensor device 114 are typically located a different locations. The processor 16 thus determines 216 the position information of the node, and further calculates 218 a distance between the equipment 112 and the node. The method further comprises outputting 220, via output port 43, a control signal directed to the equipment 112, based on the calculated distance. More particularly, a “Distance Formula” is derived from the Pythagorean theorem and calculates the distance between two points in three-dimensional Euclidean space (x1,y1,z1) and (x2,y2,z2). Once the exact position of two nodes are determined, the distance formula can be used to calculate the distance between these nodes. For the example of focusing a camera, if one of the nodes is the centre of the focal plane on a camera, the external focus ring or internal electronic focus mechanism of the lens can be set to that distance in order to focus an object. More particularly, the position information of each node in the computing step 216 comprises Euclidean space coordinates of the node (x1,y1,z1), and the calculating step 218 comprises: receiving 222 position information of the equipment in Euclidean space coordinates (x2,y2,z2); and calculating 224 the distance between the position information of the equipment and the position information of the node from the following pythagorean theorem: distance=√{square root over ((x1−x2)2+(y1−y2)2+(z1−z2)2)} For a motion tracking sensor that measures both position and orientation, vector mathematics can be used to apply a “tip offset” to the location of the sensor. For example if an actor puts a sensor on the back of his/her cranium, a tip offset could project the location of the sensor to the surface of the actor's left eye, in effect creating a virtual sensor on the actor's eye. For rigid subjects/objects, applying a tip offset allows for nodes to be defined anywhere inside or on the surface of the subject/object. Likewise, tip offsets (nodes) can be created anywhere in 3D space, i.e. they can exist outside an object representing a location coordinate relative to the sensor's position and orientation. Thus, the determining step 216 comprises applying 226 a tip offset from the position data and orientation data of the sensing device 114 of the capturing step 210 in order to calculate the position information of the node. One method to perform this tip offset (node) projection makes use of measured X, Y, and Z offsets from that sensor's origin to the eye, with respect to the axis system defined by the sensor. For the eye example, the offsets could be 10 cm in the X-direction, 0 cm in the Y-direction, and 8 cm in the Z-direction with respect to the sensor's local coordinate system. With these offsets, rotational matrices and/or quaternions can be used to calculate the absolute position (X,Y,Z) and orientation (yaw, roll, pitch) of the actor's eye in the motion tracking system's coordinate system. The following equations use a standard rotational matrix approach to solving this tip offset problem (see http://www.flipcode.com/documents/matrfaq.html#Q36). Thus, in this embodiment, step 226 of applying the tip offset (see FIG. 1B) comprises obtaining relative coordinates of the node relative to the three-dimensional position data and orientation data of the sensing device 114, within an axis system defined by the sensing device 114. In this case, the determining step 216 comprises evaluating an absolute position of the node in relation to the equipment 112. The absolute position of the node is evaluated as follows: Using the rotation matrix M=X.Y.Z where M is the final rotation matrix, and X,Y,Z are the individual rotation matrices. M =  CE - CF - D - BDE + AF BDF + AE - BC ADE + BF - ADF + BE AC  Where: A,B are the cosine and sine, respectively, of the X-axis rotation axis, i.e. roll; C,D are the cosine and sine, respectively, of the Y-axis rotation axis, i.e. tilt; E,F are the cosine and sine, respectively, of the Z-axis rotation axis. i.e. pan; Xf=Xs+Xt*M(1,1)+Yt*M(2,1)+Zt*M(3,1); Yf=Ys+Xt*M(1,2)+Yt*M(2,2)+Zt*M(3,2); Zf=Zs+Xt*M(1,3)+Yt*M(2,3)+Zt*M(3,3); where: Xf,Yf,Zf are absolute (or “final”) coordinates of the node; Xs,Ys,Zs are coordinates of the sensing device's center; Xt,Yt,Zt correspond to coordinates of the tip offset relative to the sensing device's center; M(row,column) are elements of the rotation matrix in terms of row and column, respectively, with the element “row” representing the row number of within the matrix and the element “column” representing the column number of within the matrix. The measurement of the “tip offsets” may be facilitated by another method. For example, there is a sensor is on the back of an actor's cranium with an initial orientation which can be represented in Euler angles or by a quaternion. A user wishes to define a node on the actor's left eye. Another motion tracking sensor can be placed against the actor's eye to calculate the X, Y, and Z offsets (instead of attempting to use measuring tape for instance). One solution is to measure the “tip offset” and orientation at this initial time. Given the base sensor at position, P1, and the sensor at the desired node point, P2, the “tip offset”, V1, is P2−P1. The initial orientation can be defined as quaternion Q1 with X, Y, Z, and W attributes. At any other time, there will be a new orientation, Q2. Thus, in this embodiment, step 226 of applying the tip offset comprises obtaining a tip offset having been precalculated by a position of a node sensing device located at a position of the node, in relation to a position and orientation of a base sensing device located at a position of said sensing device. As mentioned above, the initial orientation is defined as quaternion Q1 with X, Y, Z, and W attributes, the orientation data of the capturing step is defined as Q2. The position information of the node is determined according to: Pn+(qiqn)Pi(qiqn) where: Pi is the offset from the sensor at orientation q; Pn is the current position of the sensor; qi is the orientation of the sensor at the time Pi is calculated; qn is the current orientation of the sensor; and qi and qn are unit quaternions. Various other approaches and/or method may be carried out in order to the position and/or orientation data to perform a variety of advanced system functions. An example may be the use of quaternions to calculate the position and orientation of a motion capture “magnetic source” relative to the origin of the motion capture coordinate system. If a member of a film crew places a source at a random position and orientation, then with the use of a motion sensor in the range of this random source, along with data from a sensor or source of known position and orientation, and data from a distance measuring device such as a laser tape measure, the exact position and orientation and the random source may be determined. Simple accessory tools and software may render this exemplified process very quick and simple to carry out. Referring back to the embodiment shown in FIGS. 1A and 1B, the method 200 further comprises controlling 228, by means of the controller 118 (which is embedded in the equipment 112), the setting of the equipment 112 with said control signal. Given that the node is offset from the sensor, the orientation data advantageously allows positioning the node even if the sensor turns, as the position of the offset rotates with the sensor. For example, a sensor may be mounted on the handle of a sword, and the focal point could be fixed to the tip of the sword and tracked with high precision no matter how the sword is moved and rotated. A further advantage of using orientation data relates to a “calibration offset” function. With orientation data, it is possible to use a second sensor to instantly calculate the desired offset position of the focal node. For example, placing a sensor on the back of a performer's neck and then placing a second “calibration sensor” on the performer's eye is a fast and powerful way to create nodes. This feature will be better explained further below. A further advantage of using orientation data relates to a “quick set” function, which is a special case of the calibration offset feature. The quick set function is useful when both the camera and the subject have sensors mounted to them and the camera is pointed at a subject where the sensor is positioned out of sight, on their back, for example. The camera focus is then adjusted until the desired part of the subject is in focus, their eyes, for example. Using both the orientation data from the subject and the camera and then using the distance data indicated by the lens, it is possible to also obtain quick and suitably accurate setup of focal nodes. Various functional features and aspects, in accordance with particular embodiments of the present invention, will now be described. According to the embodiment shown in FIG. 1C, with further reference to FIG. 1A, there is shown a method 300 for controlling a setting of an equipment related to image capture. The method 300 comprises storing 314 in the memory 132, one or more identifier of a predefined region of interest (i.e. a “node”) to be treated by the equipment 112 and corresponding position information (i.e. three-dimensional coordinate relative to the equipment). The position information is obtained by: capturing 310 position data and orientation data at the sensing device 114; and determining 312 the position information of the region of interest to be treated by the equipment 112, from the position and orientation data of the sensing device 114. The method 300 further comprises receiving 316, at the processor 16, a selection of the one or more identifier. The method 300 further comprises outputting 318, by means of the output port 43, a control signal directed to the equipment 112, in order to control 320 in real-time the setting of the equipment 112 based on the position information of the selected region of interest. The Node Array: By pre-defining nodes (either stationary or moving) it is possible to create an array of desired nodes in the interface. Simply by selecting the node the lens will instantly focus on, and/or the camera will point to and compose that node in the field of view. This allows for on the spot improvisation, extremely rapid rack focusing between large numbers of subjects/objects and the ability to accurately adjust between two moving subjects/objects without requiring any act of manual measurement or manual adjustment of focus dial—or in the case of camera operation, any manual adjustment of the camera itself. Thus, in this case, the receiving step 316 of the method 300 depicted in FIG. 1C comprises receiving a predetermined sequenced selection of nodes; and the method repeats the outputting step 318 for each node selected in order to automatically control 320 the setting of the equipment 112 sequentially for a plurality of nodes, in accordance with the sequenced node selection. Node Sequencer: It is also possible to create a pre-defined sequence of nodes, which suits the current paradigm of cinematic film production where a director knows the order of subjects in advance. In this way, by pre-loading desired nodes it is possible to simply shift from one subject/object to the next by simply clicking a “next” button, or turning a dial (real or virtual) back and forth the user can not only switch between two subjects at any desired moment, but can also dictate the speed at which the focus adjusts between subjects (speed of the focus pull). Thus, the afore-mentioned repeating of steps 318, 320 shown in FIG. 1C (with reference to FIG. 1A) is prompted upon receiving a user input command, via an input port 41. Alternatively, the steps 318, 320 are repeated based on a predetermined schedule stored in the memory 132. Geometric Slider: It is also possible to arrange graphical representations of the nodes (or node array) in geometrical (triangles and squares) or random patterns (zig-zag lines, curved lines etc.) on a touch screen device, and, by sliding a finger between each node the user will be “pulling focus” between subjects, again having control over the speed of the pull and again, having no need to measure or adjust the actual focus distance regardless of movement of subjects or camera. Thus, the method 300 shown in FIG. 1C (with reference to FIG. 1A) further comprises receiving a user input command via a sliding motion on a touch screen, through the input port 41, corresponding to a displacement between two adjacent nodes, wherein the selection of the receiving step 316 comprises the identifiers of the adjacent nodes. The method 300 further comprises correlating intermediate positions between the adjacent nodes in accordance with the displacement, the outputting step 318 is repeated for each of said intermediate positions. Interface Modes: Using the Node Array, the Sequencer, the Geometry Slider and the hardware dial or other input device it is possible to choose between two basic modes of focusing. One mode is “tap to focus” where a user simply taps a button (virtual or on physical input device) to choose a node or move forward in the node sequence to the next pre-determined node. In this mode it should also be noted that it is possible to pre-determine the speed at which focus is adjusted when the next node is selected either by pre-defining a preference, or by adjusting a virtual “speed dial” or analog input device. The second mode is “slide to focus” where the user not only selects
{'bibliographic_information': "{'country': 'US', 'doc-number': '14782531', 'kind': 'B2', 'date': '20140404', 'invention_title': 'System and method for controlling an equipment related to image capture'}", 'source_file': './grant/2018/ipg180306.xml', 'source_data': 'USPTO-Grant'}