基于块间预测的图象块效应消除

赵晨光; 陈武凡

doi:10.11834/jig.199908143

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专辑

基于块间预测的图象块效应消除
Between-Block Prediction Based Algorithm for Block Effect Removal
1999年4卷第8期页码：627
纸质出版：1999
DOI： 10.11834/jig.199908143
稿件说明：

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赵晨光, 陈武凡. 基于块间预测的图象块效应消除[J]. 中国图象图形学报, 1999,4(8):627. DOI： 10.11834/jig.199908143.

Between-Block Prediction Based Algorithm for Block Effect Removal[J]. Journal of Image and Graphics, 1999, 4(8): 627. DOI： 10.11834/jig.199908143.

摘要

提出了一种消除变换编码后解码图象块效应的新方法，它利用邻近象素间存在的相关性，在块间线性预测的基础上定义出对图象相邻子块以及块内的平滑特性产生约束的平滑约束集。在解码端是一个往这些平滑约束集上连续投影的过程，最终得到一幅无论在视觉上还是从信噪比评价的角度来看均具良好效果的解码图象。

Abstract

In this paper

a new image decoding algorithm to remove the“blocking artifact”appearing with block-transform coding is proposed. In the algorithm

the correlation between adjacent pixels is used to define smooth constraint convex sets. At the decoder

the blocky image is projected onto these convex sets by using the theory of project onto convex sets

and the ultimate result is a smooth image without block artifact. Experiments demonstrate that this new algorithm can not only make the decoded image more smoother but also maintain the details of the image.