how to save the segmented region as a separate image?

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Ad 2017-10-28

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https://ww2.mathworks.cn/matlabcentral/answers/363749-how-to-save-the-segmented-region-as-a-separate-image

评论： Image Analyst 2022-1-31

I have used the code which I have found in online and divided an image into several segments. I want to extract green parts from the image and store them. I am able to display the segmented image separately with black mask. but I want to display and save the green small segmented region only as a separate image (like 9 separate .jpg images ) without black regions.

This is the code I have found in online

segmented_images = cell(1,3);
rgb_label = repmat(pixel_labels,[1 1 3]);
for k = 1:nColors
    color = img;
    color(rgb_label ~= k) = 0;
    segmented_images{k} = color;
end

Thank you in advance.

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Selva Karna 2017-10-28

you can use

imwrite(segmented_images{k},as ur list)

Ad 2017-10-28

No. That is saving the region with black part. you can see it in greenpart.jpg image. I have used imshow() instead of imwrite().

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采纳的回答

Image Analyst 2017-11-5

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First get the outline, then the bounding box and use imcrop(). Then use imwrite(). Let me know if you can't figure it out.

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john 2022-1-31

编辑：john 2022-1-31

Hello how do I get those things which you mentioned? Outline bounding box then crop? please could you give any reference example which is there in matlab in which this is done? @image analyst

Image Analyst 2022-1-31

在 MATLAB Online 中打开

@john

You should click on the "Show older comments" link. Then you'd see

props = regionprops(mask, 'BoundingBox');
croppedImage = imcrop(rgbImage, props.BoundingBox);
save(croppedImage, filename);

If you need more help with your image, post a new question after reading this:

TUTORIAL: How to ask a question (on Answers) and get a fast answer

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更多回答（1 个）

r r 2018-8-4

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I have a gray set of 20 images I want to convert gray to color and every time I work on the conversion colors vary I want to install the color for all images for example, The area in red color is still red in image1 but change blue in image 2 The problem: the changed the color with repeated 20 images

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Image Analyst 2018-8-4

I have no idea what you're asking. Please try to rephrase, and attach some screenshots, in a new question (not back here). Basically I think you want to use ind2rgb() and somehow want to change the colormap with each image, though I'm not sure how you're going to decide how to change the colormap each time.

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