1. A method for reading an image of a scene detected in an image sensor comprising a pixel array having a plurality of rows of pixels, the method comprising. exposing each of the plurality of rows of the pixel array to the image of the scene; reading-out a first subset of the rows of the pixel array to extract a first sub-image from the image; and reading-out a second subset of the rows of the pixel array to extract a second sub image from the image, wherein the first subset of the rows of the pixel array is different from the second subset of the rows of the pixel array.