Colour segmentation on resistor color band and calculate the value

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I'm a beginner to Matlab. I need to do a color segmentation on a resistor color band, identify the color and do a calculation based on the color. Any guideline for this?
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Accepted Answer

Image Analyst
Image Analyst on 11 Dec 2012
I have color segmentation tutorials here if you're interested: http://www.mathworks.com/matlabcentral/fileexchange/?term=authorid%3A31862. Basically you need to find the regions of interest first - the bands. You might use a variety of techniques depending on how repeatable the lighting and positioning are from image to image. Then you can look at the mean RGB value of each band and see which "master" color it's closest to. If the band is closer red color than any other, then assume it's red.
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More Answers (1)

reginald kwenda
reginald kwenda on 19 Feb 2015
Edited: Image Analyst on 19 Feb 2015
Hello guys, I am working on the same problem. I have managed to detect Red, Green, and Blue following an example that was given by Image Analyst ( http://www.mathworks.com/matlabcentral/answers/57356#comment_119461)
I have detected these colors off a resistor, but I don't know how to detect other colors such as yellow or brown.
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Image Analyst
Image Analyst on 24 Mar 2015
Moved: DGM on 12 Feb 2023
redMask is an image, so why is it the expression of an "if" statement - that doesn't make sense.
Also, you got the wrong values for green and blue - you swapped the values. Green should be 5 and blue is 6.

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