Lumi masking: Difference between revisions
Appearance
Content deleted Content added
Added some trivia (I'm fluent in Finnish so the translation doesn't need any reference) |
CanisRufus (talk | contribs) m bot-assisted dab: Finnish |
||
Line 3: | Line 3: | ||
== Trivia == |
== Trivia == |
||
Lumi is [[Finnish]] for snow but in this context it is more likely to mean [[Luminance_(video)|luma]] (or luminance) than the Finnish meaning. |
Lumi is [[Finnish language|Finnish]] for snow but in this context it is more likely to mean [[Luminance_(video)|luma]] (or luminance) than the Finnish meaning. |
||
Revision as of 03:42, 14 September 2006
Lumi masking is a technique used by video compression software, which reduces quality in very bright or very dark areas of the picture, as quality loss in these areas is less likely to be visible. It is also known as "psychovisual enhancements" or "adaptive quantization". The reduction in quality (and therefore bitrate) in certain areas of the picture caused by using lumi masking allows more bits to be allocated to the rest of the video, thus improving overall quality. Lumi masking is not perfect, however, and in some cases the degradation in quality it causes is visible.
Trivia
Lumi is Finnish for snow but in this context it is more likely to mean luma (or luminance) than the Finnish meaning.