how to change the color output of segmentation?

Question

Lamya Mohammad 2019-11-29

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/493943-how-to-change-the-color-output-of-segmentation

回答： Sourav Bairagya 2019-12-13

Hello everyone!

I'm using this system : https://www.mathworks.com/help/vision/examples/semantic-segmentation-using-deep-learning.html

I changed it and made it work with hand segmantation, with only two classes, they are: hand (white) and background (black)

the problem is when using this function :

imshowpair(actual, expected)

I want the result to be like the one shown in the link,or for example like this:

but I got this:

Also, I want to ask if there is a way to show the predicted mask of the image alone? when I tried to show the 'expected' variable, all the image appeared as black.

Thank you!

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Image Analyst 2019-11-29

What is the class of the actual and expected? RGB, grayscale, logical?

Lamya Mohammad 2019-11-29

编辑：Lamya Mohammad 2019-11-29

I'm not sure, but I think they are RGB, you can check it from the link. Sorry, I'm a beginner.

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Answer 1

Sourav Bairagya 2019-12-13

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/493943-how-to-change-the-color-output-of-segmentation#answer_406222

For "imshowpair" function, inputs should be grayscale/ binary/ truecolor images and for "jaccard" function, inputs sholud be binary/ label/ categorical images. Make sure the type of inputs fed to those functions are falling under these categories.

For more information follow this links:

https://www.mathworks.com/help/images/ref/jaccard.html

https://www.mathworks.com/help/images/ref/imshowpair.html#bta3ucy-1-A