I have trained and classified an image into four classes represented by the four colors seen in the result image. I would like to seperate this image into the different colours (i.e. red, purple, yellow and green). Actually, the yellow colour is the one that I want to quantify. So if I could only extract the yellow color from the rest so that i can “measure” it, that would be ideal.
I have tried a lot of the commandd in Image>colour but I can only seem to split the image into three channels (red, green and blue) which is not what i want.
I hope that anyone could help me figuring this out.