Patent ID: 9489588
Filing Date: 2016-11-08
CPC Classification: G06K,G06T

Claim Text:
1. A matting method for extracting a foreground object, which is performed by an information processing apparatus capable of digital signal processing, the matting method comprising: extracting one or more pixels from a received input image and a received trimap of the input image; calculating a first processing cost based on a first predefined cost function by extracting one or more nonlocal neighboring pixels for each of the extracted pixels which establish nonlocal relationships with each of the extracted pixels; calculating a second processing cost based on a second predefined cost function by extracting, for each of the extracted pixels, one or more local neighboring pixels which are included within a predefined range for extraction and establish local relationships with each of the extracted pixels; and performing matting on the input image by estimating an opacity value of each of the extracted pixels based on both the first processing cost and the second processing cost, wherein the trimap is an image that represents the input image by dividing the input image into a foreground region, a background region, and an unknown region, and the extracting of the one or more pixels comprises extracting one or more pixels with an indefinite opacity value that are located in the input image and the unknown region of the trimap.