Gradient feature extraction matlab code
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Can anyone explain how to make Gradient feature vector? For example, if we take Sobel edge detection operator, then how to make feature vector?
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Image Analyst
2015-2-9
1 个投票
There is edge() and imgradient() and imgradientxy(). So, once you have your edge image, what values from it do you want to stick into your feature vector? If you don't know, then we certainly don't know. You could stick virtually any number you want into a vector.
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Shivang Patel
2015-2-9
Image Analyst
2015-2-9
Could be, if that's what you want to be in your feature vector. Again, it can be whatever you define it to be.
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Diksha Kurchaniya
2017-1-5
0 个投票
would anyone can tell me how i can extract feature from sobel oprator. means i have get an image after applying the sobel operator to an image but how can i convert to feature vector to it
1 个评论
Image Analyst
2017-1-5
You're asking the question backwards.
You don't say "let me apply some arbitrary algorithm and see what features I can get from it."
You need to say, "these are the features I need to identify my object, now what algorithm can get me those features?"
Saeid Abbaasi
2019-10-18
0 个投票
for image name I, use the following code:
xHOG = extractHOGFeatures(I);
its a gradient based feature called Histogram of Gradient
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