Defining a ROI for feature extraction rather than rectangle

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Nazanin Safavian
Nazanin Safavian 2021-5-15
评论： Nazanin Safavian 2021-5-17
Hi,
I'm using points = detectSURFFeatures(I) for feature detection. I can use a rectangular ROI with this funstion in the format of [x y w h], however I need to use an arbitory ROI(from a mask with out any typical shape). Is it possible to use detectSURFFeatures function with an arbitory ROI?? The resean is that when I chose rectangle still there are some locations that are inrelavant. Any help would be appreciated.
Regards,

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回答（1 个）

Qu Cao
Qu Cao 2021-5-17
Unfortunately, rectangle is the only type of ROI supported. As a workaround, you can define multiple ROIs in your image to cover the relevant area, extract feature points separately, and then combine the points.

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