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Research on Digital Image Inpainting

Author: LiDing
Tutor: YinYong
School: Chongqing University
Course: Signal and Information Processing
Keywords: Image restoration TV model CDD model Adaptive coefficient
CLC: TP391.41
Type: Master's thesis
Year: 2011
Downloads: 90
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Abstract


The image restoration is the hotspot of research in computer graphics and computer vision applications, including the repair of the defect images, photographs , and shelter materials and other information on the target object removal . Total variation ( Total Variation , TV ) model can not meet the shortcomings of the human visual system in the \model curvature in the TV model based on diffusion factor , so that diffusion can strengthen the large curvature , to repair the image of the fracture surface damage , repair effect , but it is the introduction of the curvature factor also makes the CDD model change became the third-order partial differential equations, the repair time is greatly extended . TV model and CDD model problem , this paper presents a the CDD model based adaptive image restoration algorithm . Introducing a the curvature adaptive parameter q and the gradient adaptive parameter p , the the curvature adaptive parameter q can be selected according to the type of curvature different repair model , so that the large curvature when using CDD model , other times using the TV model , greatly reducing the repair of CDD model different diffusion that time ; gradient adaptive parameter p can be selected according to the different gray degree of change in makes more large gradient close to the TV model , the use of anisotropic diffusion to repair the image in the image edge of the damaged area , and small gradient in the flat area , close to the thermal diffusion equation , to use isotropic diffusion repair the image , repair the better . The proposed adaptive image restoration algorithm with TV model , CDD model and CDD improved model for image restoration method comparison and analysis of the experiment , the experimental results show that the proposed CDD - based model of adaptive image restoration algorithm in the repair speed and repair The effect is better than the other models .

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Information processing (information processing) > Pattern Recognition and devices > Image recognition device
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