Error concealment using affine transform for H.263 coded video transmissions

Lee, Sang-Hak; Choi, Dong-Hwan; Hwang, Chan-Sik

doi:10.1049/el:20010147

Cited by 20 publications

(12 citation statements)

References 1 publication

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“…In order to conceal the loss of image (or frame) lines or blocks, the missing lines or blocks of the current frame are replaced with those of the previous frame [11,19]. Some enhanced the traditional temporal error concealment methods.…”

Section: Temporal Loss Concealmentmentioning

confidence: 99%

Supplementary loss concealment technique for image transmission through data hiding

Kim

Lee

2009

Multimed Tools Appl

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This paper addresses a loss concealment technique of image transmission in error prone environments. Imperfect transmission of imagery results in the loss of lines or blocks. Previous concealment techniques utilize the spatial, spectral, or temporal redundancy of the imagery. We propose a supplementary loss concealment technique that uses a data-hiding method. We divide an image into 8×8 pixels blocks and generate block description information of each block. The block description information is inserted into other blocks in the same image through LSB-based data hiding. Missing lines or blocks during transmission are restored by extracting this block description information. The technique to resist against lossy compression is also considered. We have performed a simulation to show the outstanding performance of the proposed technique in comparison with other loss concealment methods.

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Section: Temporal Loss Concealmentmentioning

confidence: 99%

Supplementary loss concealment technique for image transmission through data hiding

Kim

Lee

2009

Multimed Tools Appl

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“…Another promising approach is to apply motion field interpolation (MFI), in which MVs are determined for all points (not as a single MV for each block) in the lost block by interpolation from the available number of nodal or control points [1][2][3][4]21]. For each pixel of the damaged block, an MV is determined by using bilinear MFI utilizing four neighboring MVs [1].…”

Section: Concealment In Inter-framesmentioning

confidence: 99%

“…Considering multi-reference codecs, a number of concealment techniques are also proposed in Refs. [4,21]. The four candidates are either chosen by BMA or combined as weighted averaging [4].…”

Section: Concealment In Inter-framesmentioning

confidence: 99%

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Error detection and concealment for video transmission using information hiding

Yilmaz¹,

Alatan²

2008

Signal Processing: Image Communication

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“…In such a scenario the usual concealment algorithms, that assume the existence of a number of neighboring macroblocks [1,2], or that assume the loss of one whole video frame [5,6], cannot be effectively applied. Thus, concealing the lost HR frames by the corresponding LR ones is a simple and effective method.…”

Section: Performance Of Error Concealment Approachesmentioning

confidence: 99%

Supporting Live Video on Ad Hoc Wireless Networks: Unbalanced Multiple Description Coding, Single Path Transport and Recursive Error Concealment

Feng

Sun

et al. 2008

22nd International Conference on Advanced Information Networking and Applications (Aina 2008)

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Robust transmission of live video over ad hoc wireless networks presents new challenges: high bandwidth requirements are coupled with delay constraints; nodes are constrained in processing power and storage capacity; ad hoc wireless networks suffer from bursty packet losses that drastically degrade the viewing experience. Accordingly, we propose a simple, but practical unbalanced multiple description (UMD) codec that uses single path transport only. At the UMD decoder, the lost LowResolution (LR) frames can be recoded from the corresponding ones of the correctly received HighResolution (HR) stream. This makes LR more robust to packet losses and ensures continuous video playback. The simulation results show that the proposed UMD codec has higher decoded quality, smaller quality fluctuation and lower probability of pause than other error resilience techniques, especially when channel burstiness becomes large. We also propose a novel sequence-based error concealment (EC) algorithm for our UMD decoder. It recursively uses multi-frame recovery principle to frame-by-frame reduce error drift in the HR description with respect to the LR description. In fact, the algorithm can be applied to most UMD schemes. It has the advantage of working on integer-, half-or quarter-pixel precision and looking backward without buffering future frames. Experimental results show that error decreases the fastest if the UMD decoder uses our EC algorithm. It can provide satisfactory performance on both objective and subjective evaluation. 1

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Error concealment using affine transform for H.263 coded video transmissions

Cited by 20 publications

References 1 publication

Supplementary loss concealment technique for image transmission through data hiding

Supplementary loss concealment technique for image transmission through data hiding

Error detection and concealment for video transmission using information hiding

Supporting Live Video on Ad Hoc Wireless Networks: Unbalanced Multiple Description Coding, Single Path Transport and Recursive Error Concealment

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