How to calculate the PSNR of the complete image

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tina jain
tina jain 2015 年 5 月 1 日
I have applied 1 level DWT on a lena image. After this I have applied image compression technique , separately on each subband(LL,LH,HL,HH). Now I want to calculate the overall PSNR. How to get this? Please suggest

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