Patent ID: 9131159
Filing Date: 2015-09-08
Classification: H04N

Abstract:
1. An apparatus, comprising: a processor; and a camera unit comprising a rolling shutter and an image sensor; wherein the camera unit further comprises a diffuser element configured to spread light incident thereon on the surface of the image sensor; and the image sensor comprises alternate pixel rows configured for high and low exposure respectively; wherein the processor is configured to cause capturing a conventional digital image with the high exposure pixel rows; recording the light intensity on two successive low exposure pixel rows; comparing the recorded light intensities of the two successive low exposure pixel rows; and in response to comparing the recorded light intensities of the two successive low exposure pixel rows, determining a value of a bit received via optical field communication; wherein the processor is further configured to cause segmenting the captured conventional digital image into superpixels; and to cause comparing the recorded light intensities of the two successive low exposure pixel rows inside a superpixel.