how we can imfill a thing that it is very similar to a hole but in fact it is not a hole?

2 次查看（过去 30 天）

显示更早的评论

sara 2014-9-14

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/154805-how-we-can-imfill-a-thing-that-it-is-very-similar-to-a-hole-but-in-fact-it-is-not-a-hole

评论： Image Analyst 2014-9-25

how we can imfill a thing in an binary image that it is very similar to a hole but in fact it is not a hole?

I attached a simple image that in the left side there is a thing that looks like a hole but it is not a hole

4 个评论
显示 2更早的评论隐藏 2更早的评论

Sean de Wolski 2014-9-25

Well there might be a better method than otsu; post the pre-otsu image

Image Analyst 2014-9-25

Sean, it's been posted before. Unfortunately she's carrying on this discussion in 4 or 5 different discussions. Last I left it, I showed her how to use activecontour: http://www.mathworks.com/matlabcentral/answers/155374#comment_238290

请先登录，再进行评论。

请先登录，再回答此问题。

回答（2 个）

Matt J 2014-9-14

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/154805-how-we-can-imfill-a-thing-that-it-is-very-similar-to-a-hole-but-in-fact-it-is-not-a-hole#answer_151683

编辑：Matt J 2014-9-14

Use imclose either to seal it, or to turn it into a hole which can then be treated with imfill.

3 个评论
显示 1更早的评论隐藏 1更早的评论

sara 2014-9-25

yes Matt

I tried this before but my result was not good ... thanks a lot

Matt J 2014-9-25

You could also use regionprops or bwconncomp to separate the lungs in two separate images. Then you could imclose with the original strel that was working well. Then you recombine the images.

It would also be worth attaching the challenging black and white lung image in a .mat file, so that other people can play with it.

请先登录，再进行评论。

Image Analyst 2014-9-14

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/154805-how-we-can-imfill-a-thing-that-it-is-very-similar-to-a-hole-but-in-fact-it-is-not-a-hole#answer_151686

activecontour_demo.m

Like I said in the discussion that was this first part of this question before you started this one, you can use activecontour(). See attached demo. If you can't figure how to adapt the demo, let me know. Either way, with imclose() or activecontour(), it will smooth out the perimeter and snip off that bay/incursion.

11 个评论
显示 9更早的评论隐藏 9更早的评论

Image Analyst 2014-9-17

You can use imfreehand() to manually draw a line across it. Any other way will end up filling in or smoothing other little nooks and crannies at other places along the perimeter.

sara 2014-9-24

thanks Image Analyst I cant do it manually... you said :"Any other way will end up filling in or smoothing other little nooks and crannies at other places along the perimeter" do you mean using imclose() or smoothing filter?? can you explain it more??

thanks a lot

请先登录，再进行评论。

请先登录，再回答此问题。