METHOD FOR READING A TWO-DIMENSIONAL MATRIX OF PIXELS AND DEVICE FOR IMPLEMENTING SUCH A METHOD

摘要

The invention relates to a method for reading a two-dimensional matrix (12) of pixels of an image sensor, said matrix being organized in blocks of pixels (16) forming macropixels, each macropixel being readable independently of one another in high resolution mode and/or in low resolution mode.;According to the invention, this method comprises the steps consisting:during the selection (at 50) of the high resolution readout mode for a macropixel, in reading (at 58) and storing (at 60) the values of the pixels thereof, in order to define a reference macropixel;during the subsequent high resolution readout cycles of this macropixel (at 62), in forming (at 66) the difference between the read values of the pixels thereof and the values of the corresponding pixels of the reference macropixel.