On the application of structured sparse model selection to JPEG compressed images
CCIW'11 Proceedings of the Third international conference on Computational color imaging
Novel wavelet-based QIM data hiding technique for tamper detection and correction of digital images
Journal of Visual Communication and Image Representation
Image deblocking via sparse representation
Image Communication
A design method of saturation test image based on CIEDE2000
Advances in Multimedia
Adaptive non-local means filter for image deblocking
Image Communication
Perceptually optimized blind repair of natural images
Image Communication
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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.