Find pixel intensity with coordinates?

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valerio auricchio 2020-11-5

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/637800-find-pixel-intensity-with-coordinates

评论： valerio auricchio 2020-11-6

采纳的回答： Matt J

I have two vector:

X[12 34 12 22]

Y[2 3 44 5]

They rappresent the coordinates (x,y) of a pixel. I want to know the intensity of each pixel and eliminate the pixel that have intensity lower than a value.

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采纳的回答

Matt J 2020-11-5

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/637800-find-pixel-intensity-with-coordinates#answer_535720

在 MATLAB Online 中打开

pixelValues=yourImage(  sub2ind(size(yourImage),X,Y)   );
keep=(pixelValues>=threshold);
X=X(keep);
Y=Y(keep);

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Rik 2020-11-6

What do you mean? Are you talking about the values of the keep array itself?

valerio auricchio 2020-11-6

Solved thx a lot!

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