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。
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 build test image data results based on the assessing static imag to compare their performances, an asse base, then obtain objective and subjective criteria. The test results prove that SS e quality, and also verify the accurate of t ssment method was designed. First scores, finally compute all kinds of IM is more adapted than PSNR for he proposed method.