Hybrid Inter-frame Error Concealment Algorithm Using Improved Image Inpainting

To overcome the defects of image inpainting and satisfy the characters of video inter-frame coding, a hybrid inter-frame error concealment algorithm using improved image inpainting is proposed in this paper. The movability and availability of the lost MB is judged according to the motion correlation and the receiving status of neighboring MBs. If the lost MB is static and its availability is not zero, the inter concealment based on improved inpainting is used. Otherwise, the outer boundary matching algorithm(OBMA) is used to repair the lost MB. Here, the inter image inpainting is modified with confidence function, isolux function and repairing direction. The algorithm not only takes the advantage of image inpainting for repairing the complex texture area, but also overcomes the defect of image inpainting for repairing the motion area. The experiment results show that the proposed algorithm improves the subjective and objective quality of the video, and reduces the shake induced by the concealment of OMBA.