How to eliminate intensity bias from an image?
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I need to eliminate intensity bias fro a large image. Please help me with its matlab code.
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Image Analyst
2014-5-4
What does that mean? Why would your images have a bias? Do you mean just the average intensity? Or do you mean that the intensity has a bias higher or lower than the "true" intensity by some amount? Does what you call bias vary from pixel to pixel or is it the same for every pixel in the image?
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Image Analyst
2014-5-4
It looks like what is normally called "background correction". For most image modalities, that is accomplished by getting a smooth background image and dividing the test image by it. For some situations (radiography, fluorescence) you do background subtraction instead of background division. To get the background, it looks like they just blurred the green channel enough to get rid of vessels. You can do this with conv2() or imfilter().
2 个评论
Image Analyst
2014-5-4
H is the window that slides along your A image, multiplies element by element H by your image A.
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