How do I read JPEG and PNG pixels in C++ on Linux?

Question

I\'m doing some image processing, and I\'d like to individually read each pixel value in a JPEG and PNG images.

In my deployment scenario, it would be awkward for me

Answer 1

Unfortunately, jpeg format is compressed, so you would have to decompress it before reading individual pixels. This is a non-trivial task. If you can't use a library, you may want to refer to one to see how it's decompressing the image. There is an open-source library on sourceforge: CImg on sourceforge.