How to identify object using shape?
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I want find object in given image for example I have butterfly image with matrix size is 123X235 and I given image contain butterfly with different size but same shape (ex:123X235,24X54,235X345,10X32).It is possible to identify the butterfly image ?
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Image Analyst
2016-12-27
0 个投票
Yes. Use imresize() and then run your algorithm on it. Or make an algorithm smart enough to identify the butterfly without depending on the image matrix size being a certain size.
6 个评论
CHINNI VENKATA RAMESH
2016-12-27
Image Analyst
2016-12-27
I could not have known that from your description and because you didn't post an image. I think this may be too difficult of a project for you if you want to identify each butterfly individually. You could look up the fields of CBIR and convolutional neural networks, but I think you'll be getting in over your head. I think you should try something simpler.
Here's an example where they found jets in an image using the Hausdorf distance. http://cgm.cs.mcgill.ca/~godfried/teaching/cg-projects/98/normand/main.html
CHINNI VENKATA RAMESH
2016-12-28
CHINNI VENKATA RAMESH
2016-12-28
CHINNI VENKATA RAMESH
2016-12-28
Image Analyst
2016-12-28
Well for that it's really easy. Just convert to hsv color space and threshold on saturation and call bwareafilt() to extract only the butterflies. But then you'll show me a picture of a flock of monarch butterflies coating a tree and ask me to count them and of course that simple algorithm won't work for that image.
See color segmentation methods in my File Exchange http://www.mathworks.com/matlabcentral/fileexchange/?term=authorid%3A31862 , like this one on hue segmentation that you can adapt to be on saturation segmentation.
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2016-12-27
2016-12-28
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