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I previously asked a question about how to fill a region of interest in Matlab, and got a response that I should use activecontour to identify the envelope of the region then extract the color channels and add back pure red as a binaryImage to fill the ROI. I've been trying to do this but keep running into an error message:
"Undefined function or variable 'binaryImage'."
Do I need to convert to binaryImage, and if so how do I do that?
My code and the input image are attached, any help would be greatly appreciated.

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Image Analyst
Image Analyst 2014-7-14

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It look like what you call binaryImage is what you previously called "mask" in the code. Change it to say mask and it should work better.

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Matthew Alston
Matthew Alston 2014-7-14
Ah okay that works perfectly, thanks so much for your help!
Matthew Alston
Matthew Alston 2014-7-14
Being pretty familiar with my project, what method would you recommend to analyze the final filled image? The information I need is: How many red-shaded pixels there are, and what percentage of the pixels within the body outline are shaded red. Any help would be much appreciated.

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