MATLAB: How to save SURF feature value

MATLAB

I have extracted feature from a single image using SURF feature extraction method. The extracted features are in matrix of 64 column and i have made a matrix to single value i.e adding matrix values. But my problem is, the particular single value which i have obtained by using sum function keeps altering every time when I run the code. Once if the value is 32.0676 next time when i run the same code it will be 29.0778 or something other value. I have attached the code for it and the image.

Best Answer

Because in your code following random column vector generation is there, every time it generates different column vector, therefore "sumoffeatures" value changes

columnvector = rand(1,64)

Related Solutions

MATLAB: How to have a single value for feature matrix

Assuming that you already computed a feature which is a row vector of size 64,,

% sumfeature
rowvector = rand(1,64); % assuming a 64 size row vector...replace by your feature
finalFeature = sum(rowvector(:));
sprintf('%s %d','finalFeature = ' , finalFeature)

Hope it helps.

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MATLAB: How to save feature vector of SURF for each image and train, test it for classification to svm

"output for image 1: 322*64

output for image 2: 593*64

and so on the value*64 changes for each image. can anyone please help me how to save so many features and then use it for training"

Use cell array, I am answering the question to save different sizes/types results data

I am assuming you are calling Images

result=cells(1,total_images);
%................^Total result images 
for i=1:total_images
%image read
result{i}= output result;
end

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Related Solutions

MATLAB: How to have a single value for feature matrix

MATLAB: How to save feature vector of SURF for each image and train, test it for classification to svm

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