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Update trellis optimization parameters

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Slightly improved parameters are provided when optimizing for SSIM
metric
This commit is contained in:
Frank Bossen
2014-04-29 12:33:46 -04:00
parent 87d506416f
commit cd3c32f15d
1 changed files with 2 additions and 2 deletions
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4
cjpeg.c
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@@ -473,8 +473,8 @@ parse_switches (j_compress_ptr cinfo, int argc, char **argv,
} else if (keymatch(arg, "tune-ssim", 6)) {
cinfo->use_flat_quant_tbl = TRUE;
cinfo->lambda_log_scale1 = 11.5;
cinfo->lambda_log_scale2 = 13.0;
cinfo->lambda_log_scale1 = 12.0;
cinfo->lambda_log_scale2 = 13.5;
cinfo->use_lambda_weight_tbl = FALSE;
jpeg_set_quality(cinfo, 75, TRUE);