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psnr,ssim,rmse三个指标的定量分析
2022-07-02 22:09:00 【沉沉沉小姐】
RMSE 越小越好
根据经验法则,可以说RMSE值在0.2 ~ 0.5之间,说明该模型能够较准确地预测数据。此外,校正后的r平方大于0.75是一个很好的值来显示准确度。在某些情况下,调整后的r平方值为0.4或更多也是可以接受的。
PSRN越大越好
PSNR高于40dB说明图像质量极好(即非常接近原始图像),
在30—40dB通常表示图像质量是好的(即失真可以察觉但可以接受),
在20—30dB说明图像质量差;
最后,PSNR低于20dB图像不可接受
SSIM 越大越好
SSIM取值范围[0,1],值越大,表示图像失真越小.
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