Reduced-reference image quality evaluation model based on visual weighted index figure

作者：Chen Weiling; Yuan Fei^*; Cheng En

来源：Chinese Journal of Scientific Instrument, 2015, 36(2): 351-359.

• Full reference quality assessment
• Mapping mechanism
• Quality assessment
• Quality evaluation system
• Reduced-reference image quality assessments
• Subjective quality
• Transmission images
• Visual weighting

In order to further improve the accuracy of semi-reference image quality evaluation, a kind of semi-reference image quality evaluation method is presented, which establishes the relation between changes of image feature after transmission and subjective quality of image. In the quality evaluation system, mapping mechanism and rational characteristics are chosen. The reference image can represent the change of image feature and location of deterioration of the image. So the changes of feature can be figured out in receive end by full reference quality assessment of reference image. Two layers of HVS characteristics are used to distribute the quality weight of image blocks, which will be used in quality assessment of reference image. Through the full reference quality assessment based on the visual weight of reference image, the semi-reference image quality assessment of transmission image can be achieved. The evaluating accuracy of this method is respectively higher by 18.65% and 2.71% than psnr and ssim, while the monotonicity of this method is respectively higher by 17.86% and 11.97%, and the consistency is respectively higher by 55.18% and 23.45%.

• 出版日期2015
• 单位厦门大学