Patent ID: 9571761
Date: 2017-02-14
CPC Classifications: H01L,H04N

Claim:
1. A method for imaging a scene with a very short integration time by using an image sensor comprising a matrix of pixels, each pixel comprising a photodiode and means for reading the charges accumulated by the photodiode during an integration duration, the matrix furthermore comprising sequencing means for establishing start and end instants of the integration duration, the method being characterized in that two images of the same scene are produced under identical light conditions, one of the images corresponding to integration of charges during a first time interval with a duration T int and corresponding to the even rows of the matrix, the other image corresponding to a second time interval with a duration T′ int longer than T int and corresponding to the odd rows of the matrix, and a difference between these two images is established, representing an image integrated during a time interval T′ int −T int , the difference being formed by the pixel-to-pixel difference between the luminances of the pixels of an odd row and the luminances of the pixels of an even row immediately adjacent.