Shape feature extraction in Matlab
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Aswathy Gopan
le 21 Nov 2015
Commenté : Image Analyst
le 17 Mar 2018
I would like to know how to extract shape features like area,perimeter ,eccentricity,symmetry distance in Matlab.Do i need to convert the colour image into grayscale for doing this calculation.Or is the calculation done in the pre-processed segmented image.
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Image Analyst
le 21 Nov 2015
See my Image Segmentation Tutorial. http://www.mathworks.com/matlabcentral/fileexchange/?term=authorid%3A31862
You need to first segment the image to get a binary image then you can call regionprops(). Whether you call rgb2gray() or just extract one of the RGB color channels, or use rgb2hsv() or rgb2lab(), or PCA or something else really depends on your image and what you need to find in it. Post your image(s) if you want more advice.
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junnie vix
le 21 Mar 2017
I am using SURF to extract shape in matlab. I don't have any idea how to start it. Any helpful guidance or reference?
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