Find the Euclidean distance of each pixel from a user-selected pixel in color space and displays scaled images from 0 to the current max distance.

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Arsen Driashkaba 2021-1-23

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https://ww2.mathworks.cn/matlabcentral/answers/724857-find-the-euclidean-distance-of-each-pixel-from-a-user-selected-pixel-in-color-space-and-displays-sca

评论： Arsen Driashkaba 2021-1-24

采纳的回答： Image Analyst

Hi,

Can someone help me? Sorry for bad english

I need to find the Euclidean distance of each pixel from a user-selected pixel in RGB space and other in Lab space. Then displays 2 scaled images either from 0 to the current max distance, or from 0 to the theoretically maximum possible distance in a given color space. The result should be like

I'm new to this

Here is my current code

I dont know if im on the right way

Thanks everyone

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KALYAN ACHARJYA 2021-1-23

编辑：KALYAN ACHARJYA 2021-1-23

"I need to calculate the Euclidean distance between pixel colors, not between their coordinates"

Distance measure between to positions/locations, the indices (row number and column number) of particular color level exactly represent the same.

Arsen Driashkaba 2021-1-23

Sorry, im new to this. Can you help me please? Thanks a lot for replying

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Image Analyst 2021-1-23

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/724857-find-the-euclidean-distance-of-each-pixel-from-a-user-selected-pixel-in-color-space-and-displays-sca#answer_604597

在 MATLAB Online 中打开

Just do this

[x, y] = ginput(1);
row = round(y);
col = round(x);
rp = double(rgbImage(row, col, 1));
gp = double(rgbImage(row, col, 2));
bp = double(rgbImage(row, col, 3));
[r, g, b] = imsplit(double(rgbImage));
colorDistance = sqrt((r - rp).^2 + (g - gp).^2 + (b - bp).^2);
imshow(colorDistance, []);