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Software to do lossless jpeg montage?
I've got software that can do lossless rotation and cropping of jpeg images, but I'm wondering if there is any that can assemble jpegs losslessly into full resolution montages.
I'm aware of jpeg compression adding noise on each recompression. I'm also aware that there are lossless formats. For this sort of montage, though, storage will be an issue, and I would prefer to store the resulting image as a jpeg.
If I'm going to do that, I'd rather have the montage jpeg file made up of the blocks from the original files, rather than recompressed. That way I get the jpeg compression, but no further added noise. If I had a good enough guide to the jpeg/jfif file format I could maybe write something to do it myself.
1 Answer
- 1 decade agoFavorite Answer
The editing isn't really the problem. It's when you save the file... The jpg format itself is lossy, so every time you save an image as jpg you lose quality.
Edit twice and save twice? You lose quality twice.
To get around this, convert your stuff to TIFF before you edit & save it as TIFF again. When putting several pictures together on one print, create a huge TIFF canvas and copy/ paste away.