Fit rectangle to binary mask

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Stefan Lang 2021-4-23

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评论： Matt J 2021-5-1

I have a binary mask prediction imported into matlab from neural network training. It's just a large array filled with zeros, except where the predictied structures lies, it is filled with ones. The predicted structure looks more ore less like a rectangle and i need to get these 4 corner coordinates from the predicted mask. So my idea would be to fit a rectangle to the predicted mask and read out the corner coordinates of the rectangle. Is there an existing function for this? Or does anyone have another approach?

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Matt J 2021-4-23

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编辑：Matt J 2021-4-23

See the FEX submission pgonCorners (which you must Download).

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Stefan Lang 2021-4-30

I tried it with the attached file and the following code:

vertebra_corners_frontal = corner_prediction(vertebras_frontal,4,100)

pgonCorners is inside corner_prediction. Some vertebras get 2 corner points in one corner. If i adjust angular sample, i even sometimes get only 3 points for each region.