ryan/mozjpeg
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Update trellis optimization parameters

Browse Source 
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
Download Patch File Download Diff File Expand all files Collapse all files

4
cjpeg.c
View File

@@ -473,8 +473,8 @@ parse_switches (j_compress_ptr cinfo, int argc, char **argv,
} else if (keymatch(arg, "tune-ssim", 6)) { } else if (keymatch(arg, "tune-ssim", 6)) {
cinfo->use_flat_quant_tbl = TRUE; cinfo->use_flat_quant_tbl = TRUE;
cinfo->lambda_log_scale1 = 11.5; cinfo->lambda_log_scale1 = 12.0;
cinfo->lambda_log_scale2 = 13.0; cinfo->lambda_log_scale2 = 13.5;
cinfo->use_lambda_weight_tbl = FALSE; cinfo->use_lambda_weight_tbl = FALSE;
jpeg_set_quality(cinfo, 75, TRUE); jpeg_set_quality(cinfo, 75, TRUE);