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Image shows with imshowpair, but not with imshow

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Ashley Salisbury
Ashley Salisbury 2020-7-22
回答： Constantino Carlos Reyes-Aldasoro 2020-7-22
I am writing a function that reads an image and converts it to BW. I am able to use imshowpair to display the unedited and edited images next to each other, but can't individually show just the edited (BW) image. What should I do?
midAirImage = imread("MidAirTest.jpg");
bwImage = imbinarize(midAirImage,'adaptive','ForegroundPolarity','dark','Sensitivity',0.4);
imshowpair(midAirImage, bwImage, 'montage')

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采纳的回答

Abhishek Gangwar
Abhishek Gangwar 2020-7-22
编辑：Abhishek Gangwar 2020-7-22
Your binary image should be 2 dimensional, if it is not convert the original image into gray cale and then create binary image,
midAirImage = imread("MidAirTest.jpg");
midAirImage = rgb2gray(midAirImage);
bwImage = imbinarize(midAirImage,'adaptive','ForegroundPolarity','dark','Sensitivity',0.4);
imshowpair(midAirImage, bwImage, 'montage')
imshow(bwImage);

更多回答（1 个）

Constantino Carlos Reyes-Aldasoro
You have two options, use subplots
subplot(121)
imagesc(midAirImage)
subplot(122)
imagesc( bwImage)
Alternatively you can concatenate your images like this
imagesc( [ midAirImage bwImage])
Notice that the binary will be between 0 and 1 and the original between 0 and 255 so you need to scale:
imagesc( [ midAirImage 255*bwImage])
Hope this helps to solve your problem.

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