Retrieve image colour from display?

blackhawk

I wish to create a small application to tag along my existing software. I need the most prominent colour of the screen/display.

https://www.processing.org/reference/get_.html

What's the best way to go about this? The idea is that the image changes every 30seconds or at a random interval. Is taking a screenshot every 5 seconds, processing it and getting the colour a bit overkill? is there anway to retrieve the colour from the current display on regular intervals?

Any help is appreciated, i'm not even sure this is the right path i should be approaching :)

quark

I need the most prominent colour of the screen/display.

Processing uses 32bit colour so a single pixel can be any of 16,777,216 possible colours and if you consider transparency then there are 4,294,967,296 possible combinations.

Finding the most prominent colour even for a single image is not straightforward.

PhiLho

I would rather use loadPixels() and the pixels[] array, faster than get().

And perhaps you can subdivide the color cube in large chunks (like red between 100 and 120, etc.), to get dominant colors.