韩沁, 李凡, 汪烈军. 基于互相关系数的边缘加权质量预测评估算法[J]. 微电子学与计算机, 2014, 31(10): 107-112.
引用本文: 韩沁, 李凡, 汪烈军. 基于互相关系数的边缘加权质量预测评估算法[J]. 微电子学与计算机, 2014, 31(10): 107-112.
HAN Qin, LI Fan, WANG Lie-jun. An Image Quality Assessment Algorithm Based on Cross-correlation Coefficient with Edge Weight[J]. Microelectronics & Computer, 2014, 31(10): 107-112.
Citation: HAN Qin, LI Fan, WANG Lie-jun. An Image Quality Assessment Algorithm Based on Cross-correlation Coefficient with Edge Weight[J]. Microelectronics & Computer, 2014, 31(10): 107-112.

基于互相关系数的边缘加权质量预测评估算法

An Image Quality Assessment Algorithm Based on Cross-correlation Coefficient with Edge Weight

  • 摘要: 多媒体应用中,图像可能需要进行缩放后观测,尤其在增大显示分辨率时,图像质量会不可避免地下降.为了对这种情况下的图像质量进行评估,提出了一种基于预测的图像质量评估算法.算法采用图像邻域像素间的互相关系数进行图像质量的评估,考虑到邻域像素的强相关性会带来图像边缘区域模糊,算法对图像不同的区域采用分类加权的处理方式.同时,为了兼顾人眼的视觉特性,对待评估图像进行多尺度分解,给予不同尺度以不同权重,从而计算出最终的图像评估分数.由实验分析结果,所提算法可在图像的原始尺度上有效地进行失真质量预测,且对比已有的DIIVINE算法,验证了该算法的准确性.

     

    Abstract: In the practical application,image may need to be resized when to be observed,especially,in the circumstance of enlarging image resolution,the image quality would be degraded inevitably.In order to make image quality evaluation in this case,an image quality assessment algorithm based on prediction is proposed.The proposed algorithm use the cross-correlation coefficient between neighboring pixels as index.At the same time,considering the facts that a strong correlation between one pixel and its neighboring pixels would bring the fuzzy in the image edge area,so image is separated into different classification,different approach is adopted according to the different area.Meanwhile,in order to give attention of human visual system characteristics,the image multi-scale analysis is also to be embedded in the prediction algorithm.In the end,we get a more exact result score,and this score would be an index of distorted image quality score.The experiment results demonstrate that the proposed CCS algorithm can be used as a method to assess the image distorted quality,and increase the accuracy of image quality assessment comparing with conventional algorithms DIIVINE.

     

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