Hello. I have just found my way to ImageJ and thought it might be usefull to process a dozen of images like these.
Of course first I need to crop to only hold the purple-ish circle.
The images come from a ueye camera in a setup which produces plasma in cavities.
I want to measure the mean intensity in all chambers by automatically placing (and defining) ROI’s in the cavities.
I am not sure where to start. I played with adjust color threshold and analyse particles to automatically create ROI’s. But then I end up with cavities which are either totally black or white and thus the average ROI intensity is 0 or 255.
I am not sure in what way to proceed.
If a cavity is lit (purple-ish) I could detect it by checking intensity.
But if it were not lit I would maybe need to go for template matching to find the edges of the cavities.
Could someone point me in the right direction?
I know RTFM but it is so big!
Or do I need a beginners course ImageJ first