| 摘要 |
The invention relates to image sensors, and, more particularly, to matrix sensors having CMOS active pixels. The invention relates to a method for shooting a scene with a very short integration time, using a standard image sensor comprising a pixel matrix having photodiodes and nodes for storing charges. Two images of a same scene are produced in identical lighting conditions, one of the images corresponding to a charge integration during a first time interval having a duration Tint and the other image corresponding to a second time interval having a duration T'int larger than Tint, and a difference is established between said two images, representing an image integrated during a time interval T'int - Tint. The light can be provided by a light pulse (IMP). Said method is applicable for observing the points of a scene, located at determined distance, the shortness of the integration time providing good precision of the observation distance. |
