I have an image and want to make a rectangle around black part which is in the middle of image.

3 次查看（过去 30 天）

abhishek 2014-6-23

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/137156-i-have-an-image-and-want-to-make-a-rectangle-around-black-part-which-is-in-the-middle-of-image

编辑： abhishek 2014-6-26

 I have an image and want to make a rectangle around black part which is in the middle of image.

回答（2 个）

Dishant Arora 2014-6-23

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/137156-i-have-an-image-and-want-to-make-a-rectangle-around-black-part-which-is-in-the-middle-of-image#answer_142072

Go for connected component labelling and check out for bounding boxes parameter, plot it. For more information check out this demo by image analyst Image Segmentation Tutorial ("BlobsDemo")

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

abhishek 2014-6-23

sir i tried that code but its not working as i want. I tried bounding box, regionprops etc. but failed. so plz can you simply make some code for this situation.

请先登录，再进行评论。

Image Analyst 2014-6-23

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/137156-i-have-an-image-and-want-to-make-a-rectangle-around-black-part-which-is-in-the-middle-of-image#answer_142080

What are you starting with? A gray scale image, or that binary image? If you have that binary image, you might want to call imclose() to connect some regions together, then call bwareaopen() to get rid of small noise regions, Then call regionprops and get the centroids and bounding boxes. Find the centroid closest to the center of the image and extract only that one with ismember.