Image matting method and device

• Main Authors: ZOU ZEDONG, TANG RONGFU, LIU YONG, ZHOU JIAN
• Format: Patent
• Language: Chinese; English
• Published: 14.07.2017
• Subjects: CALCULATING; COMPUTING; COUNTING; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; PHYSICS

The invention discloses an image matting method comprising the following steps of: acquiring an input image and a target frame, and constructing the depth information of an image corresponding to the target frame; coarsely segmenting the image corresponding to the target frame by using an image segmentation algorithm formed by RGBD modeling with a Gaussian mixture model to obtain a target area, wherein D is the depth information; subjecting the target area to a corrosion expansion operation to obtain a ternary graph; determining the transparency value of the ternary graph and acquiring a foreground accurate extraction result. Compared with a traditional matting method, the method has better robustness to colors and illumination variation, is high in precision, and can obtain a good matting result with only a small amount of user interaction. The invention also discloses an image matting device with the above effects. 本发明公开了种图像抠图方法，包括：获取输入的图像以及目标框，并构建目标框对应图像的深度信息；利用高斯混合模型对RGBD建模形成的图割算法对目标框对应图像进行粗分割，获取目标区域；其中，D