how to divide the image into regions based on color values.

hi. may i know how to divide the image into regions based on color values. for example gold coin and silver coin. how can i differentiate between gold and silver and get the each of color pixel value. tq

Answer 1

[Image Analyst]

If you need color to distinguish between the two (which you may not), I have several color segmentation demos in my File Exchange: http://www.mathworks.com/matlabcentral/fileexchange/?term=authorid%3A31862

If you know you have 3 colors, gold, silver, and the background color, you can use rgb2ind() to classify them

classifiedImage = rgb2ind(rgbImage, 3);

though it won't work if only one color coins is present - you'd have to change the 3 to 2 in that case.

[Amith Kamath]

As it happens, we have an App for that!

https://www.mathworks.com/help/images/image-segmentation-using-the-color-thesholder-app.html

Answer 2

[Walter Roberson]

http://www.mathworks.com/matlabcentral/fileexchange/25157-image-segmentation-tutorial