MATLAB: How to set region inside roi (polygon) to 1.

Question

I have a polygon drawn on an image using impoly. I want to set the region inside the polygon to 1. Can it be done. Please help me. Nithya

Answer 1

If you have the Image Processing Toolbox, you can use the poly2mask() function to do that

[rows, columns, numberOfColorChannels] = size(yourImage);
binaryMask = poly2mask(x, y, rows, columns);