Get the masks of the region between two lines

Question

Yuzhen Lu 2020-3-25

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https://ww2.mathworks.cn/matlabcentral/answers/512915-get-the-masks-of-the-region-between-two-lines

回答： Jyotsna Talluri 2020-3-30

Here is an image where two lines are drawn. I want to generate a binary mask for the region enclosed by the two lines. Is there a specialized function for achiving this purpose?

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darova 2020-3-25

Can you fill the region you want to select (on the picture)?

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Answer 1

Jyotsna Talluri 2020-3-30

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https://ww2.mathworks.cn/matlabcentral/answers/512915-get-the-masks-of-the-region-between-two-lines#answer_422811

Create a polygonal ROI on the image by specifying the vertices of the ROI using the position property, or you can draw the ROI interactively using draw function. Refer to the below documentation links for creating ROI.

https://www.mathworks.com/help/images/ref/images.roi.polygon.html

https://www.mathworks.com/help/images/ref/draw.html

Once the ROI is created, create binary Mask using createMask function