Patent ID: 7986302

Claim:
A function command analysis system comprising: an image input unit that inputs an image containing a plurality of images respectively generated by light emitted from a corresponding plurality of light emission devices; a position information extraction unit that extracts position information of the images that are respectively generated by the light emitted from the light emission device, from a differential image generated from the images input by the image input unit; a function command specification unit that extracts, for each image generated by the light emitted from a respective one of the light emission devices, a plurality of modes of the image, wherein for a given one of the images the plurality of modes includes: (i) a first mode indicative of a function command input by an operator; and (ii) a second mode indicative of which of the plurality of light emission devices emitted light for generating that image; and a function command output unit that outputs, in respect of each image, data indicative of the light emission device that emitted light for generating that image, the position information extracted by the position information extraction unit and the function command specified by the function command specification unit.