I have this code that detects vegetation from a picture. i want to remove it. how should i do that?

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charuleelaa vanilavarasu 2016-2-3

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https://ww2.mathworks.cn/matlabcentral/answers/266357-i-have-this-code-that-detects-vegetation-from-a-picture-i-want-to-remove-it-how-should-i-do-that

评论： Image Analyst 2016-2-3

Image1 = im2double(imread('image\8.jpg'));
g=rgb2gray(Image1);
[row column page] = size(Image1)
mask = Image1(:,:,2) > Image1(:,:,1) & Image1(:,:,2) > Image1(:,:,3);
Image2 = Image1 .* mask(:,:,[1 1 1]);
figure,imshow(Image2);
title('light green');
mask = Image2(:,:,2) + 20 > Image2(:,:,1) & Image2(:,:,2) + 20 > Image2(:,:,3);
Image3 = Image2 .* mask(:,:,[1 1 1]);
figure,imshow(Image3);
title('dark green');

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Answer 1

Image Analyst 2016-2-3

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https://ww2.mathworks.cn/matlabcentral/answers/266357-i-have-this-code-that-detects-vegetation-from-a-picture-i-want-to-remove-it-how-should-i-do-that#answer_208396

See my color segmentation demos in my File Exchange http://www.mathworks.com/matlabcentral/fileexchange/?term=authorid%3A31862

Or else search on the tag "leaf".

Or else use imseggeodesic(). Look up examples in the help for it.

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charuleelaa vanilavarasu 2016-2-3

i tried your demo. For some reason it's not working for my own images. it does not ask me the option to choose the color but works for the demo

Image Analyst 2016-2-3

Set a breakpoint on the call to menu(). Chances are you clicked somewhere and that popup dialog box then went underneath whatever you clicked on.

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Answer 2

Walter Roberson 2016-2-3

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https://ww2.mathworks.cn/matlabcentral/answers/266357-i-have-this-code-that-detects-vegetation-from-a-picture-i-want-to-remove-it-how-should-i-do-that#answer_208343

Remember when you im2double() you change the data to the range 0 to 1. Your value +20 suggests you are still thinking in terms of uint8 values in the range 0 to 255. If so then the corresponding increment in 0 to 1 range would be 20/255 rather than 20.