Demo for jpeg2png
- Top left: original Lena image
- Top right: original, 64x64 detail
- Bottom left: JPEG encoded at 10% quality with 4:2:0 chroma subsampling using the GIMP, 64x64 detail
- Bottom right: JPEG decoded with jpeg2png using the default settings, 64x64 detail
- Top left: original Hige image (source)
- Top right: original, 64x64 detail
- Bottom left: JPEG encoded at 90% quality with 4:4:4 chroma subsampling using the GIMP, 64x64 detail
- Bottom right: JPEG decoded with jpeg2png using the default settings, 64x64 detail
- qjpegrest is a tool that lets you try many different JPEG restoration methods (TV based, band-pass based and Huber MRF based). I learned from the code. See notes/qjpegrest.txt for installation help.
- jpeg-quantsmooth is program tries to recreate lost precision of DCT coefficients based on quantization table from jpeg image.