Trace a ROI and remove it from image

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Alina tom
Alina tom 2018-7-22
评论： Image Analyst 2018-7-23
Hi All
I have the following image . I want to trace the part which is shown in red lines and remove it from the image . but I don't know how I can scan from top to bottom to find the object and remove it. can anyone help me to do this ???
Thanks in advance for helping me
Here is the image attached
here is another image

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回答（1 个）

Image Analyst
Image Analyst 2018-7-22
See my attached masking demo. It will do that.
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Alina tom
Alina tom 2018-7-23
Sir how I can trace the small blob by scanning image from top to bottom?
the small blob has a dark shadow below it . how can we use this information to trace that part and remove it
Image Analyst
Image Analyst 2018-7-23
ALL your blobs have dark regions below them.
You can use bwareafilt() if you want to toss out small blobs.

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