Techniques for enhancing an image using pixel-specific processing. An image can be enhanced by updating selected pixels through patch aggregation. Respective patch values for patches of any size of the image are determined. Patch values provide update information for updating the respective pixels in the patch. Relevant patch values for the selected pixel are identified by identifying associated patches of the pixel. Information from the relevant patch values of the selected pixel may be obtained by averaging the relevant patch values or determining the maximum or minimum patch value. Using this information, pixel-specific processing may be performed to determine an updated pixel value for the selected pixel. Pixel-specific processes may be executed for each of the selected pixels. These pixel-specific processes can be executed in parallel. Therefore, through the execution of pixel-specific processes, which may be performed concurrently, an enhanced image may be determined.