Frequency-Based Environment Matting of Transparent Objects Using Kaczmarz Method
I‐Cheng Chang, Tian-Lin Yang, Chung‐Lin Huang · 2010
Digital compositing is an important topic in the field of computer graphics and im-age processing. Many works have sought a good method to prevent composited images from being distinguishable from real images. The paper proposes a new environment matting algorithm to model the appearance of transparent object under different back-grounds. In the proposed approach, the frequency-domain analysis is adopted to compute the relationship between the area of foreground object and background image. Further-more, the Kaczmarz method is applied to compute the caustics from refraction by trans-parent objects. The experimental results show that the algorithm effectively improves the quality of composited image and has a high PSNR. In addition, the composited results are also demonstrated by a video sequence involved of the motion, rotation and scaling of the transparent object.