Generate ROI from a binary mask

Hi all,

I am looking for a way to generate ROI objects from a binary mask that contains a single object.

The idea is to transform a DCNN model predicted binary mask into an interactive ROI object which one can then edit. I have already processed the predicted mask so that I will have several binary masks that contains a single object (or equivalently, a single instance mask).

I know it is possible to programmatically draw ROI objects by defining the roi.ROI_TYPE.Position property, for instance,

drawpolygon(imageAxes, 'Position', roiCoordinates);

I am wondering if someone has successfully converted binary masks to ROI coordinates? Or perhaps theres another way to generate a ROI object from a binary image?

Any suggestions would help.

Cheers

[Marcel Kreuzberg]

check bwboundaries

regards

[Zeyi Yang]

Thank you Marcel!

"bwboundaries" worked indeed! The coordinates generated by "bwboundaries" was flipped about the Y-axis but this problem was easily solved with the built-in function "flip". Here's an example of the generated Freehand ROI objects: