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TSR: algorithm of image hole-filling based on three-step repairing

The Journal of China Universities of Posts and Telecommunications 2022年第5期29卷 83-91页

作者： Li Fucheng Deng Junyong Zhu Yun Luo Jiaying Ren Han School of Electronic Engineering Xi'an University of Posts and TelecommunicationsXi'an 710121China

In order to solve the hole-filling mismatch problem in virtual view synthesis, a three-step repairing(TSR) algorithm was proposed. Firstly, the image with marked holes is decomposed by the non-subsampled shear wave transform(NSST), which will generate high-/low-frequency sub-images with different resolutions. Then the improved Criminisi algorithm was used to repair the texture information in the high-frequency sub-images, while the improved curvature driven diffusion(CDD) algorithm was used to repair the low-frequency sub-images with the image structure information. Finally, the repaired parts of high-frequency and low-frequency sub-images are synthesized to obtain the final image through inverse NSST. Experiments show that the peak signal-to-noise ratio(PSNR) of the TSR algorithm is improved by an average of 2-3 dB and 1-2 dB compared with the Criminisi algorithm and the nearest neighbor interpolation(NNI) algorithm, respectively.

关键词： virtual view point synthesis hole-filling three-step repairing(TSR) Criminisi algorithm curvature driven diffusions(CDD)algorithm

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An adaptive interpolation algorithm for hole-filling in free viewpoint video

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Journal of Measurement Science and Instrumentation 2013年第4期4卷 343-345页

作者： Beomsu Kim Mincheol Hong School of Electronic Engineering Soongsil University

Depth image based rendering(DIBR) is an effective approach for virtual view synthesis in free viewpoint television and 3D video.One of the important steps in DIBR is filling the holes caused by disocclusion regions and wrong depth values.Most of the existing hole-filling methods work well in areas of low spatial activity but fail to obtain satisfactory results in high spatial activity regions.In this paper,we combine the depth based hole-filling and the adaptive recursive interpolation algorithm which is capable of handling edges passing through the missing areas.Accoring to the experimental results,we confirm that the depth based adaptive recursive interpolation algorithm can provide better rendering quality objectively and subjectively.

关键词： depth image based rendering(DIBR) hole-filling 3D virtual viewpoint

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