Calculating area of a shape in an image

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Ahmed
Ahmed 2011-12-29
How to calculate the actual area (in Cm^2) for an irregular shape in an image?? Please help me.

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回答（2 个）

Image Analyst
Image Analyst 2011-12-29
You need to know the size of your image's total field of view, or an object of known size in the image, so that you can calculate a pixels/cm calibration factor. Then calculate area in pixels as usual (bwlabel, regionprops) and multiply by the square of the calibration factor.
Image Analyst
Image Analyst 2012-1-7

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