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I am tryng to create a filter for that . What would the code be for a choosen location to change the rgb colors without affecting the whole image only the choosen location
Answers
Do the tutorial on images
look at loadpixels pixels and savePixels
Any and all pixel manipulation can be found easily in the forum: https://forum.processing.org/two/search?Search=loadpixels
Find a code that you feel it will do the work for you. Test it. If you have problems, post your code and any details relevant to your question.
Kf
On the reference page, look at the entries under Image > Pixels in the right column.