Picco Chu wrote:

Does anyone know how to decode a .jpg file into some editable image data
with 24-bit (8-bit for each R,G,B channel) value for each pixel? And save
back to .jpg after edit?


What do you mean by "editable"? Most photo editing softwares do exactly that: decodes jpg, lets you edit it and later save it back to jpg. You can also save it as uncompressed tiff for raw rgb values. Could you be more specific on what you want to accomplish?

Paapaa

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