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Update MS-SSIM tuning

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Change optimization parameters when tuning for MS-SSIM for better
performance
This commit is contained in:
Frank Bossen
2014-07-10 16:55:53 +09:00
parent 55e3e7e819
commit 62300280b5
1 changed files with 3 additions and 3 deletions
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6
cjpeg.c
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@@ -491,9 +491,9 @@ parse_switches (j_compress_ptr cinfo, int argc, char **argv,
jpeg_set_quality(cinfo, 75, TRUE); jpeg_set_quality(cinfo, 75, TRUE);
} else if (keymatch(arg, "tune-ms-ssim", 6)) { } else if (keymatch(arg, "tune-ms-ssim", 6)) {
cinfo->use_flat_quant_tbl = TRUE; cinfo->use_flat_quant_tbl = FALSE;
cinfo->lambda_log_scale1 = 10.5; cinfo->lambda_log_scale1 = 14.25;
cinfo->lambda_log_scale2 = 13.0; cinfo->lambda_log_scale2 = 12.75;
cinfo->use_lambda_weight_tbl = TRUE; cinfo->use_lambda_weight_tbl = TRUE;
jpeg_set_quality(cinfo, 75, TRUE); jpeg_set_quality(cinfo, 75, TRUE);