How to give Image as Input to SVM

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Tallha Akram 2012-4-14

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https://ww2.mathworks.cn/matlabcentral/answers/35446-how-to-give-image-as-input-to-svm

评论： Pratik Oak 2015-8-4

Let image is (n*n) matrix. If i change it to (N^2*1) matrix,

the SVMtrain gives error " SVM must have 2 column Matrix". To change the Image into two columns doesnt look logical. I want Face recognition using MultuSVM but unable to get the idea of storing image in format. (X1, X2) with Classes(yi).

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Ahmed 2014-9-18

Please post the line that calls the 'svmtrain' function, the sizes of your data and label matrix/vector and the exact error message. The line "SVM must have 2 column Matrix" does not sound like literally taken from the command prompt output.

Pratik Oak 2015-8-4

You have to give the features of an image as input to svmtrain. Not direct image.

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Answer 1

Pratik Oak 2014-9-18

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Hi we cant give image as input to svm. U should calculate feature/features of an image. Give that features matrix as input to svm.

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Ahmed 2014-9-18

Under certain circumstances it is possible to input the images directly. For instance, if the images are registered. However, for face recognition this probably won't work (sufficiently) well.

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