Ms. Rajani P. K. Profile

Rajani P. K.

at Pimpri Chichwad College of Engg

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Proceedings Article | 19 June 2017 Paper

Video error concealment using block matching and frequency selective extrapolation algorithms

Rajani P. K., Arti Khaparde

Proceedings Volume 10443, 104431C (2017) https://doi.org/10.1117/12.2280357

KEYWORDS: Video, Error analysis, Computer simulations, Quality measurement, Data modeling, Signal to noise ratio, Motion estimation, Motion models, Internet, Distortion

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Error Concealment (EC) is a technique at the decoder side to hide the transmission errors. It is done by analyzing the spatial or temporal information from available video frames. It is very important to recover distorted video because they are used for various applications such as video-telephone, video-conference, TV, DVD, internet video streaming, video games etc .Retransmission-based and resilient-based methods, are also used for error removal. But these methods add delay and redundant data. So error concealment is the best option for error hiding. In this paper, the error concealment methods such as Block Matching error concealment algorithm is compared with Frequency Selective Extrapolation algorithm. Both the works are based on concealment of manually error video frames as input. The parameter used for objective quality measurement was PSNR (Peak Signal to Noise Ratio) and SSIM(Structural Similarity Index). The original video frames along with error video frames are compared with both the Error concealment algorithms. According to simulation results, Frequency Selective Extrapolation is showing better quality measures such as 48% improved PSNR and 94% increased SSIM than Block Matching Algorithm.

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