images color

Question

Sivakumaran Chandrasekaran 2012-5-10

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https://ww2.mathworks.cn/matlabcentral/answers/37948-images-color

关闭： MATLAB Answer Bot 2021-8-20

how to apply a particular color(e.g., green) in particular area.

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Answer 1

Stefan 2012-5-10

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https://ww2.mathworks.cn/matlabcentral/answers/37948-images-color#answer_47341

在 MATLAB Online 中打开

is the area under a curve or between two curves?

then use: http://www.mathworks.de/help/techdoc/ref/area.html

otherwise, do you have a mask, in which every point which shall be green =1 and ever other =0?

then apply:

 rgb=size(mask);
 rgb(:,:,1)=0; 
 rgb(:,:,2)=mask;  
 rgb(:,:,3)=0;
 imhsow(rgb);

if you do not have a mask, you have to create one... hope i could help you

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Sivakumaran Chandrasekaran 2012-5-10

Hi Image Analyst,

Thanks for writing. now the problem has been solved from the guidance of your reply, which you gave in the link http://www.mathworks.in/matlabcentral/answers/34880-images.

Thank you

Sivakumaran Chandrasekaran 2012-5-10

Hi Image Analyst,

Thanks for writing. now the problem has been solved from the guidance of your reply, which you gave in the link http://www.mathworks.in/matlabcentral/answers/34880-images.

Thank you

Answer 2

Stefan 2012-5-10

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/37948-images-color#answer_47353

look at this example, i think its the easiest way to get a mask

http://www.mathworks.de/help/toolbox/images/ref/graythresh.html

consider if the output values are correct. extraction of concrete pattern can be quite difficult and is an issue in many segmentation research studies...