Patent ID: 9124808
Filing Date: 2015-09-01
Classification: H04N

Abstract:
1. A method of sensing a time-varying image having at least one time-varying region of interest therewithin, the method comprising: spatially modulating the time-varying image with an array of modulating pixels to form a modulated image, the array of modulating pixels having a modulator resolution; and sensing the modulated image with an array of sensor pixels, the array of sensor pixels having a sensor resolution, the modulator resolution being finer than the sensor resolution; wherein each sensor pixel corresponds to a plurality of modulating pixels, said sensor pixel and said plurality of modulating pixels subtending the same region in the time-varying image; wherein outside the region of interest, the modulated image is synthesized at the sensor resolution and at a sensor video frame rate; wherein inside the region of interest, the modulated image is synthesized at the modulator resolution and at an effective synthesized video frame rate that is less than the sensor video frame rate; wherein each modulating pixel is switchable between an on state and an off state; wherein the on state comprises directing at least a portion of time-varying image light, incident on said modulating pixel, to the modulated image; wherein the off state comprises blocking the time-varying image light, incident on said modulating pixel; wherein inside the region of interest, said plurality of modulating pixels are modulated in an orthogonal sequence of frames; and wherein in one frame of the orthogonal sequence, all the modulating pixels in the plurality are in the on state.