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2011

Quality Assessment of Deblocked Images

12 years 10 months ago
Quality Assessment of Deblocked Images
—We study the efficiency of deblocking algorithms for improving visual signals degraded by blocking artifacts from compression. Rather than using only the perceptually questionable PSNR, we instead propose a block-sensitive index, named PSNR-B, that produces objective judgments that accord with observations. The PSNR-B modifies PSNR by including a blocking effect factor. We also use the perceptually significant SSIM index, which produces results largely in agreement with PSNR-B. Simulation results show that the PSNR-B results in better performance for quality assessment of deblocked images than PSNR and a well-known blockiness-specific index.
Changhoon Yim, Alan Conrad Bovik
Added 15 May 2011
Updated 15 May 2011
Type Journal
Year 2011
Where TIP
Authors Changhoon Yim, Alan Conrad Bovik
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