Method and apparatus for improving low-light performance for small pixel image sensors

摘要

Method and apparatuses processing pixel values from a captured image include receiving an array of digital pixel values corresponding to a captured image, and computing a rolling sum of the array of pixel values. Computing a rolling sum includes selecting successive groupings of the pixel values, each grouping comprising N×M pixel values, summing pixel values in each of the successive groupings, and forming an output image using the summed pixel values.