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MSU Super-Precision Filter
Filter for colour-depth enhancing
MSU Graphics & Media Lab (Video Group)
Method ideas: Dr. Dmitriy Vatolin
Implementation: Artem Titarenko
Filter is intended for increasing the colour depth of video (bits per pixel) while preserving details and borders.
Main problem of this method is slow processing speed. But it can be applied with MSU Super-Resolution filter - in this case temporary results of the latter filter will be used by the former, and they will work together slightly slower than each taken separately.
Examples
Filter is applied for colour depth increasing from 5 to 8 bits per channel. All examples are presented as extracted video frames and video sequences. Video codec DivX 4.12 in Quality-based mode was used for compression.
The first example is from "amelie" sequence:
Source frame (5 bits per channel)
Processed with MSU Super-Precision filter (8 bits per channel)
Histogram of source frame
Histogram of processed frame
The next example is from "toy" sequence:
Source frame
(5 bits per channel)
Processed with MSU Super-Precision filter
(8 bits per channel)
Histogram of source frame
Histogram of processed frame
Source frame
(5 bits per channel)
Processed with MSU Super-Precision filter
(8 bits per channel)
Histogram of source frame
Histogram of processed frame
The next example is from "mobile" sequence:
Source frame
(5 bits per channel)
Processed with MSU Super-Precision filter
(8 bits per channel)
Histogram of source frame
Histogram of processed frame
Source frame
(5 bits per channel)
Processed with MSU Super-Precision filter
(8 bits per channel)
Histogram of source frame
Histogram of processed frame
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Other resources
Video resources:
Server size: 8069 files, 1215Mb (Server statistics)
Project updated by
Server Team and
MSU Video Group
Project sponsored by YUVsoft Corp.
Project supported by MSU Graphics & Media Lab