I am trying to create the segmentation mask for each red color boundary. Input image has 4 polygons with a red color boundary. I want to mark each polygon segment with different colors as shown in the output. Please help me with this.

Input Image

Output Image

CodePudding user response：

Why can't you simply scan through the image and do the following:

1. execute

   CodePudding user response：

   1. take red channel only. consider as single-channel grayscale/binary.
   2. invert. areas become white. borders become black.
   3. connected components labeling (of the white areas). connectedComponents is the API

   To paint a picture where each area has a color, use numpy operations (mask indexing, assignment) to construct that picture from the labels map returned by connectedComponents.