CAJ | 학술논문

静态图像压缩领域提出了众多图像质量客观评估方法,但对于各种客观评估方法与主观感受相符程度的研究仍有不足.为此,文章设计了一种评价客观评估方法的测评方法:按特定原则建立相对完备的测评图像库,以实际观测得到的主观分数为参考,以客观评估方法的评价分数为测评对象,通过对比同一压缩算法不同压缩倍数、不同压缩算法主观质量相近情况下各种评估方法的表现,以及依据VQEG报告的度量准则所求的度量结果,对客观评估方法的性能进行评价.同时,文章以PSNR和SSIM为例进行了测评,结果表明SSIM各项指标优于PSNR,与现有结论一致.
정태도상압축영역제출료음다도상질량객관평고방법,단대우각충객관평고방법여주관감수상부정도적연구잉유불족.위차,문장설계료일충평개객관평고방법적측평방법:안특정원칙건립상대완비적측평도상고,이실제관측득도적주관분수위삼고,이객관평고방법적평개분수위측평대상,통과대비동일압축산법불동압축배수、불동압축산법주관질량상근정황하각충평고방법적표현,이급의거VQEG보고적도량준칙소구적도량결과,대객관평고방법적성능진행평개.동시,문장이PSNR화SSIM위례진행료측평,결과표명SSIM각항지표우우PSNR,여현유결론일치.
There are many objective methods for quality assessment(QA) in static image compression domain, but the research on assessing QA's concidence with human quality judgements is inadequate. In order to compare their performances, an assessment method was designed. First build test image database, then obtain objective and subjective scores, finally compute all kinds of results based on the criteria. The test results prove that SSIM is more adapted than PSNR for assessing static image quality, and also verify the accurate of the proposed method.