How to set a position to imfreehand?

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Junia Josephine D 2016-3-1

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https://ww2.mathworks.cn/matlabcentral/answers/270849-how-to-set-a-position-to-imfreehand

评论： Image Analyst 2016-3-1

I get the position of the imfreehand using

re =imfreehand(gca); position = getPosition(re);

now I need to know , is it possible to use this "position" to retrieve the desired roi ? Or is it possible to use this position in creating mask?

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回答（1 个）

Image Analyst 2016-3-1

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https://ww2.mathworks.cn/matlabcentral/answers/270849-how-to-set-a-position-to-imfreehand#answer_211867

freehand_masking_demo.m

See my freehand masking demo, attached.

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Junia Josephine D 2016-3-1

I have seen this demo. But what I need is to use the position which I get in previous execution and set that position value in future execution of code

Image Analyst 2016-3-1

You can save either the binary image mask, or the x,y coordinates, or both to a .mat file with the save() function. Then on future executions, call load() to recall the mask data.

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