I would like to choose a region of interest (ROI) above and below an oblique (45°) planar interface in my 2d image. I used ROIPOLY of Matlab to get the rectangular mask from my image. I would like to optimize this rectangular mask so that my model and data values match. How could I programmatically increase/decrease the width and height of the rectangle which I draw parallel to my 45° interface?

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Sean de Wolski
Sean de Wolski 2011 年 4 月 11 日
Can you post an image to help clarify your question please? (see markup help for instructions.)
varadharajan
varadharajan 2011 年 4 月 11 日
Hi I added a photo.Thanks!

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Sean de Wolski
Sean de Wolski 2011 年 4 月 11 日

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%An Image Processing Morphology Approach
You could use imdilate and imerode with an appropriate structuring element (tuned for 45 degrees) to increase/decrease the height width.
doc imdilate
doc imerode
doc strel

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2011 年 4 月 11 日

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