How can i save the [x,y,intensity] of image if i am running a threshold intensity scan of a picture?

Question

Fawad Ali 2022-7-29

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1770220-how-can-i-save-the-x-y-intensity-of-image-if-i-am-running-a-threshold-intensity-scan-of-a-picture

编辑： Image Analyst 2022-8-2

clc
source= imread('testimg.jpg');
[rows,coloumn,channels]=size(source)
% Scanning row & coloumn wise
a=1;
while a>=1 && a<=rows
    [b]=1;
    if b>=1 && b<=coloumn
        if source(a,b,3)>=100
            % Need help in saving this to specific coloumn in form a vector!
            xlswrite("data_oel.xlsx",b,'data','(B2:B169)') 
        end
        b=b+1;
    end
    xlswrite("data_oel.xlsx",a,'data','(A2:A300)')
    a=a+1;
end

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Answer 1

Image Analyst 2022-7-29

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1770220-how-can-i-save-the-x-y-intensity-of-image-if-i-am-running-a-threshold-intensity-scan-of-a-picture#answer_1017640

RGBXY_to_CSV.m

See attached demo where I write R, G, B, x, y to a CSV file. Is that what you want?

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Fawad Ali 2022-8-2

how can i figure out the high intensities of R,G,B if i read a matrix out of it

Image Analyst 2022-8-2

编辑：Image Analyst 2022-8-2

在 MATLAB Online 中打开

You can use the max function

rgbImage = imread('peppers.png');
[r, g, b] = imsplit(rgbImage);
maxR = max(r(:))
maxR = uint8
    255
maxG = max(g(:))
maxG = uint8
    255
maxB = max(b(:))
maxB = uint8
    255