1. A decompression apparatus comprising: an input configured to receive image information and a plurality of control parameter sets for the image information, the image information defining a content of an image; a memory communicating with the input and configured to store the received plurality of control parameter sets; a decompressor communicating with the input and configured to at least partially decompress the image information; a selector configured to classify each pixel of a plurality of pixels in the image, into respective representative classes to form classified pixels, based on a content of the image in a respective window of windows in the image, and to select a respective one of the received plurality of control parameter sets dependent on classification of each of the classified pixels in the image, wherein each window of the windows comprises a different set of pixels with defined positional relationship with each other, in the image, and wherein windows including pixels classified in a same representative class have more similar patterns of properties than windows including pixels that are not classified in the same representative class; an image processing circuit configured to post-process the at least partially decompressed image information, using the selected respective ones of the control parameter sets for the classified pixels, from the memory to control post-processing for pixels in the image.