Module opencv::alphamat

Alpha Matting

Alpha matting is used to extract a foreground object with soft boundaries from a background image.

This module is dedicated to computing alpha matte of objects in images from a given input image and a greyscale trimap image that contains information about the foreground, background and unknown pixels. The unknown pixels are assumed to be a combination of foreground and background pixels. The algorithm uses a combination of multiple carefully defined pixels affinities to estimate the opacity of the foreground pixels in the unkown region.

The implementation is based on aksoy2017designing.

This module was developed by Muskaan Kularia and Sunita Nayak as a project for Google Summer of Code 2019 (GSoC 19).

Modules

prelude

Functions

info_flow

Compute alpha matte of an object in an image