1. A computerized method for providing a remote control command to a computerized device based on a sequence of digital images, the method comprising: determining a discrepancy measure based on a comparison of pixels of a current image of the sequence of digital images to a reference image; determining a salient feature based on an analysis of the discrepancy measure, the salient feature being associated with a portion of the pixels within the current image; and based on an existence of a previously established association between an occurrence of a user indication associated with an action by the computerized device and the salient feature, automatically transmitting a command to the computerized device, the command configured to cause the computerized device to execute the action; wherein: the salient feature comprises a representation of a user body portion; the reference image comprises an image acquired prior to the current image without the representation of the user body portion; and the reference image is based on a low pass filter operation on a plurality of images from the sequence of digital images, where the individual ones of the plurality of images precede the current image.