10. A handheld device to generate regions of binary values for use in text recognition, the handheld device comprising: one or more memories comprising an image of a scene of real world; one or more processors operatively coupled to the one or more memories to execute therefrom a plurality of instructions, the plurality of instructions comprising: first instructions to create a plurality of sets of positions automatically, by at least performing comparisons using multiple pluralities of pixels hereinafter compared pixels that are located in the image at corresponding positions comprised in the plurality of sets of positions; wherein a first set in the plurality of sets of positions is created without using in any comparison, a plurality of pixels hereinafter skipped pixels that are located in the image at additional positions comprised in the first set; wherein a first region identified by the first set is contiguous in the image, the first region comprising the compared pixels and the skipped pixels identified respectively by the corresponding positions and the additional positions; wherein a second region is contiguous in the image, the second region being identified by positions in a second set, in the plurality of sets of positions created by the creating; second instructions to check, whether a test is satisfied by a first attribute of the first region and a second attribute of the second region; third instructions to prepare a merged set comprising the positions in the first set and the positions in the second set, based on at least an outcome of said test; and fourth instructions to store in at least one memory, the merged set.
10. A handheld device to generate regions of binary values for use in text recognition, the handheld device comprising: one or more memories comprising an image of a scene of real world; one or more processors operatively coupled to the one or more memories to execute therefrom a plurality of instructions, the plurality of instructions comprising: first instructions to create a plurality of sets of positions automatically, by at least performing comparisons using multiple pluralities of pixels hereinafter compared pixels that are located in the image at corresponding positions comprised in the plurality of sets of positions; wherein a first set in the plurality of sets of positions is created without using in any comparison, a plurality of pixels hereinafter skipped pixels that are located in the image at additional positions comprised in the first set; wherein a first region identified by the first set is contiguous in the image, the first region comprising the compared pixels and the skipped pixels identified respectively by the corresponding positions and the additional positions; wherein a second region is contiguous in the image, the second region being identified by positions in a second set, in the plurality of sets of positions created by the creating; second instructions to check, whether a test is satisfied by a first attribute of the first region and a second attribute of the second region; third instructions to prepare a merged set comprising the positions in the first set and the positions in the second set, based on at least an outcome of said test; and fourth instructions to store in at least one memory, the merged set. 12. The handheld device of claim 10 wherein: comparisons performed by said performing are between a pair of pixels that are separated in the first region from one another by one or more of the skipped pixels; the comparisons are performed repeatedly; and a number of pixels to be skipped in a next comparison at a next iteration are determined at least partially based on a predetermined threshold being not exceeded by a difference in intensities, between one compared pixel used in a current comparison at a current iteration and another compared pixel used in a prior comparison at a prior iteration.