how to MAKE an image as a svm classifier input ?

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syscon 2014-3-8

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编辑： Uttiya Ghosh 2020-7-15

i have matlab 2012 sample codes for svm (support vector machine) classifier. In these code "HOW CAN I ADD THE 2D IMAGE AS A INPUT FOR MALE & FEMALE DETECTION

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Answer 1

Uttiya Ghosh 2020-7-15

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https://ww2.mathworks.cn/matlabcentral/answers/120667-how-to-make-an-image-as-a-svm-classifier-input#answer_465947

编辑：Uttiya Ghosh 2020-7-15

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Hi Anto,

As per my understanding you would like to know the procedure to train a SVM classifier using grayscale images. I have used R2020a version of MATLAB to train trainImageCategoryClassifier function on a set of digits. This function trains a support vector machine (SVM) multiclass classifier using the input bag (bagOfFeatures object). PFB the code required to perform the desired task.

setDir = fullfile(matlabroot,'toolbox','nnet','nndemos', ...
    'nndatasets','DigitDataset');
imds = imageDatastore(setDir,'IncludeSubfolders',true,'LabelSource',...
    'foldernames');
[imdsTrain,imdsTest] = splitEachLabel(imds,0.9,'randomize');
bag = bagOfFeatures(imdsTrain,"VocabularySize",100);
mdl = trainImageCategoryClassifier(imdsTrain,bag);
confMatrix = evaluate(mdl,imdsTest);