1. An image signal processor comprising: statistics collection logic comprising: a pixel weighting mask configured to: receive a first representation of a pixel, wherein the first representation of the pixel comprises a luma and chroma representation of the pixel; and output a pixel weighting value based at least partly on first and second chroma components of the luma and chroma representation of the pixel; and accumulation logic configured to: receive a second representation of the pixel or the first representation of the pixel; receive the pixel weighting value; weight the second representation of the pixel or the first representation of the pixel using the pixel weighting value to obtain a weighted pixel value; and add the weighted pixel value to a statistics count.