IEEE Trans Image Process - Quality assessment of deblocked images.

Tópicos

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Resumo

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.

Resumo Limpo

studi effici deblock algorithm improv visual signal degrad block artifact compress rather use perceptu question psnr instead propos blocksensit index name psnrb produc object judgment accord observ psnrb modifi psnr includ block effect factor also use perceptu signific ssim index produc result larg agreement psnrb simul result show psnrb result better perform qualiti assess deblock imag psnr wellknown blockinessspecif index

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