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中文摘要：
采用基于模糊识别的误码掩盖方法来对块编码的灰度图像进行帧内的误码掩盖。首先对丢失块进行周围像素匹配,找到最佳匹配块,然后采用模糊识别技术来对最佳匹配块的恢复效果进行模糊分类,并根据分类的结果对恢复较差的块采取相应的修正处理：对于平滑纹理进行改进的像素逐点修正,而对于复杂纹理则采用分块再匹配方法,从而达到有针对性地掩盖误码、改善视觉效果的目的。实验结果表明,对于具有复杂纹理和精细细节的图像,采用本文方法可以获得比较满意的结果,不仅在主观上可以获得较好的恢复效果,而且PSNR也有较大的提高。
英文摘要：
A new technique for fuzzy recognition based error concealment（FRBEC） on the block-based images is proposed aimed at gray level images.The fuzzy recognition is applied to fuzzy classify for the results of surrounding pixel matching.Then,the corresponding correction is processed to modify the results of the forgoing classification.The developed pixel correction is processed to modify the pixels of the inaccurately-covered blocks with the smooth texture,and pixel re-matching is processed aimed at those with the complex texture.Experimental results show the effectiveness of the proposed method for the images with complex texture and fine details.The subjective effect is satisfactory and the PSNR is higher.
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