How to remove unwanted object?

4 次查看（过去 30 天）

gugu 2018-1-2

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/375216-how-to-remove-unwanted-object

评论： Image Analyst 2018-1-3

I want to remove the pointed object in my attached image. The boundary between these two objects has been split using marker-controlled watershed. I've tried to remove this object using imclearborder with connectivity 4. But, it also removes the region of interest. I also tried to label the image(bwlabel). The number of object returned is 1. I think it should be 2.

How can I remove this unnecessary object?

2 个评论
显示无隐藏无

Rik 2018-1-2

If you look closely, you will see a gap in the border, just to the right of your arrow.

gugu 2018-1-2

Is it the cause? How can I completely split these two objects?

请先登录，再进行评论。

请先登录，再回答此问题。

回答（1 个）

Image Analyst 2018-1-2

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/375216-how-to-remove-unwanted-object#answer_298396

在 MATLAB Online 中打开

If the remaining connection gugu pointed out is touching by just a corner, rather than a full side of a pixel, then you can change the connectedness of the process from the default 8 to 4:

binaryImage = imclearborder(binaryImage, 4);

4 个评论
显示 2更早的评论隐藏 2更早的评论

gugu 2018-1-3

编辑：Image Analyst 2018-1-3

I got it. Instead of using imclearborder in binary image, I tried using it in grayscale image. Thanks you for your time.

Image Analyst 2018-1-3

Yeah, it might work but it's description is SO vague, "For grayscale images, imclearborder tends to reduce the overall intensity level in addition to suppressing border structures" that who knows what it is really doing? I sure don't.

请先登录，再进行评论。

请先登录，再回答此问题。