Image matting method and apparatus involve performing feature points detection on image, first image area manually marked on image, and first image area is adjusted according to feature points

A computing device of implementing image matting on an image, comprising:

• at least one processor;
• and
• at least one memory communicatively coupled to the at least one processor and storing instructions that upon execution by the at least one processor cause the at least one processor to perform operations comprising:
• performing feature point detection on the image to obtain feature points;
• obtaining a first image region that is manually marked on the image;
• adjusting the first image region according to the feature points to obtain a second image region;
• and
• performing matting on the image according to the second image region, wherein the performing matting on the image according to the second image region comprises:
• detecting an edge of the second image region as an initial edge,
• expanding the second image region from the initial edge outwardly to obtain a target edge, and
• generating a cutout image by cutting out a region of the image enclosed by the target edge.

A non-transitory computer readable storage medium configured to store non-transient computer readable instructions, wherein

• the non-transient computer readable instructions, when executed by a computer, cause the computer to perform operations of implementing image matting on an image, the operations comprising:
• performing feature point detection on the image to obtain feature points;
• obtaining a first image region that is manually marked on the image;
• adjusting the first image region according to the feature points to obtain a second image region;
• and
• performing matting on the image according to the second image region, wherein the performing matting on the image according to the second image region comprises:
• detecting an edge of the second image region as an initial edge,
• expanding the second image region from the initial edge outwardly to obtain a target edge, and
• generating a cutout image by cutting out a region of the image enclosed by the target edge.