# HG changeset patch
# User Ashok Kumar Mishra <[email protected]>
# Date 1483532305 -19800
# Wed Jan 04 17:48:25 2017 +0530
# Node ID c350c4d19b577b46d5be8141383695c9726f59f9
# Parent 255a921f8f894b4cd23dc00a5fef97b9289c9fad
doc: updated rst doc about param ssim-rd
diff -r 255a921f8f89 -r c350c4d19b57 doc/reST/cli.rst
--- a/doc/reST/cli.rst Wed Jan 04 15:40:08 2017 +0530
+++ b/doc/reST/cli.rst Wed Jan 04 17:48:25 2017 +0530
@@ -944,6 +944,16 @@
maximum TU size is smaller than the CU size then transform QT begins
at the depth of the max-tu-size. Default: 32.
+.. option:: --ssim-rd, --no-ssim-rd
+
+ Enable/Disable SSIM RDO. SSIM is a better perceptual quality assessment
+ method as compared to MSE. SSIM based RDO calculation is based on residual
+ divisive normalization scheme. This normalization is consistent with the
+ luminance and contrast masking effect of Human Visual System. It is used
+ for mode selection during analysis of CTUs and can achieve significant
+ gain in terms of objective quality metrics SSIM and PSNR. It only has
effect
+ on presets which use RDO-based mode decisions (:option:`--rd` 3 and above).
+
Temporal / motion search options
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