Coding artifact reduction using adaptive post-treatment

Luong, Marie; Beghdadi, Azeddine; Souidene, Wided; Negrate, Alain le

doi:10.1109/isspa.2005.1580267

Cited by 1 publication

(1 citation statement)

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“…In (Jang and al., 2003), an iterative algorithm is applied for reducing the blocking effect artefact in the block transform-coded images by using a minimum mean square error filter in the wavelet domain. Another similar method based on image restoration approach has been proposed (Luong et al, 2005). A blocking effect visibility measure based on the local contrast is used to control the iterative process.…”

Section: Introductionmentioning

confidence: 99%

Predicting Blocking Effects in the Spatial Domain Using a Learning Approach

Chetouani¹,

Mostafaoui²,

Beghdadi³

2008

Proceedings of the International Conference on Signal Processing and Multimedia Applications

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A new method for predicting blocking effect in the spatial domain is proposed. This method aims at estimating the appearance of blocking artefacts in the original image prior to compression for a given bit rate and a given compression technique. The basic idea is to use a training process in order to compute a visibility measure. A weighting function of the blocking effects is then derived from this training process performed on a database. The proposed method is objectively and subjectively evaluated on various actual images. The obtained results confirm the efficiency of the proposed method in predicting blocking effect.

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Section: Introductionmentioning

confidence: 99%