How to save SURF feature value?

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S.A 2018-4-23

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https://ww2.mathworks.cn/matlabcentral/answers/396796-how-to-save-surf-feature-value

评论： chetna kaushal 2019-8-2

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.

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chetna kaushal 2019-8-2

hy,

the extracted features are in a 64 column but value is different for each image. say 322*64, 593*64, 233*64. How did you come up to a single value? and how to feed them for testing in classification.

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Answer 1

KALYAN ACHARJYA 2018-4-23

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https://ww2.mathworks.cn/matlabcentral/answers/396796-how-to-save-surf-feature-value#answer_316697

编辑：KALYAN ACHARJYA 2018-4-23

在 MATLAB Online 中打开

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)