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| revision 1.20.2.16, Sat Jan 25 22:44:50 2003 UTC | revision 1.20.2.17, Sat Jan 25 22:51:20 2003 UTC | |
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| # | Line 938 | Line 938 |
| 938 | return psnr_y; | return psnr_y; |
| 939 | } | } |
| 940 | ||
| 941 | ||
| 942 | float sse_to_PSNR(long sse, int pixels) | |
| 943 | { | |
| 944 | if (sse==0) | |
| 945 | return 99.99; | |
| 946 | ||
| 947 | return 48.131 - 10*log10((float)sse/(float)(pixels)); // log10(255*255)=4.8131 | |
| 948 | ||
| 949 | } | |
| 950 | ||
| 951 | long plane_sse(uint8_t * orig, | long plane_sse(uint8_t * orig, |
| 952 | uint8_t * recon, | uint8_t * recon, |
| 953 | uint16_t stride, | uint16_t stride, |
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