JPEG post processing image enhancement
Alex López, Angel Torres, Shawn D. Hunt · Proceedings of International Conference on Neural Networks (ICNN'97) · 2002
A nonlinear filter based on the feedforward neural network topology is presented. This study was undertaken to investigate the usefulness of 'smart' filters in image post processing. The filter has shown to be useful in recovering high frequencies, such as those lost during the JPEG compression-decompression process. The filtered images have a higher signal to noise ratio, and a higher perceived image quality. Simulation studies showing examples of the high frequency recovery, and the statistical properties of the filter are given.