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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.

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Examples

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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

Video is here (872 KB).

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

Video is here (742 KB).

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

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Video resources:

Call for MPEG4-AVC/H.264 codecs 2012

Public MSU video filters Here are available VirtualDub and AviSynth filters. For a given type of digital video filtration we typically develop a family of different algorithms and implementations. Generally there are also versions optimized for PC and hardware implementations (ASIC/FPGA/DSP). These optimized versions can be licensed to companies. Please contact us for details via video(at)graphics.cs.msu_ru. MSU Cartoon Restore (New!) MSU Noise Estimation MSU Frame Rate Conversion MSU Image Restoration MSU Denoising (Top!) MSU Old Cinema MSU Deblocking (Top!) MSU Smart Brightness and Contrast (Top!) MSU Smart Sharpen (Top!) MSU Noise generation MSU Noise estimation MSU Motion Estimation Information MSU Subtitles removal (New!) MSU Logo removal (Top!) MSU Deflicker (Top!) MSU Field Shift Fixer AviSynth plug-in MSU StegoVideo MSU Cartoonizer (Top!) MSU SmartDeblocking (Top!) MSU Color Enhancement MSU Old Color Restoration MSU TV Commercial Detector (New!) MSU filters FAQ (Read me!) MSU filters statistics	MSU/YUVsoft filters for companies We are working with Intel, Samsung, RealNetworks and other companies on adapting our filters other video processing algorithms for specific video streams, applications and hardware like TV-sets, graphics cards, etc. Some of such projects are non-exclusive. Also we have internal researches. Please let us know via video(at)graphics.cs.msu_ru if you are interested in acquiring a license for such filters or making a custom R&D project on video processing, compression, computer vision. 3D Displays Video Generation (New!) 3D Displays Video Capturing (New!) Stereo Video Depth Map Generation (New!) Automatic Objects Segmentation Semiautomatic Objects Segmentation New Frame Rate Conversion New Deinterlacer MSU-Samsung Deinterlacing Project Digital TV Signal Enhancement Old Film Recovery Tuner TV Restore Panorama Video2Photo SuperResolution SuperPrecision MSU-Samsung image and video resampling MSU-Samsung Frame Rate Conversion Motion Phase filter Deshaker (video stabilization) Film Grain/Degrain filter Deblurring filter Video Content Search
Codecs comparisons Objective and subjective quality evaluation tests for video and image codecs Call for MPEG4-AVC/H.264 codecs 2012 7-th MPEG4-AVC/H.264 Comparison (New!) 6-th MPEG4-AVC/H.264 Comparison 5-th MPEG4-AVC/H.264 Comparison Codec Analysis for Companies: (New!) Private Video Codec Comparison Ext. link: ViCoS - Video Codecs Scoring System MSU Video Quality Measurement Tool Options Analysis of Codec x264 (New!) 4-th MPEG4-AVC/H.264 Comparison (Top!) Lossless Video Codecs Comparison 2007 3-rd MPEG4-AVC/H.264 Comparison HD Photo and JPEG 2000 Comparison MPEG-2 Decoders Crash Test (Top!) Subjective Compar. of 4 Modern Codecs (Top!) 2-nd MPEG-4 AVC/H.264 Comparison (Top!) FAQ of 2-nd H.264 Comparison 1-st MPEG-4 AVC/H.264 Codecs Comparison FAQ of 1-st H.264 Comparison JPEG 2000 Image Codecs Comparison (Top!) Lossless Video Codecs Comparison 2004 MPEG-4 SP/ASP Codecs Comparison (Top!) Video codecs comparison (old) Ext. link: x264 parameters efficiency comparison	MSU Video Quality Measurement tools Programs with different objective and subjective video quality metrics implementation MSU Video Quality Measurement Tool - objective metrics for codecs and filters comparison (New!) (Top!) Implemented metrics short info: PSNR, Delta, MSAD, MSE, SSIM, VQM, MSU Blurring Metric, MSU Blocking Metric MSU Brightness Flicking Metric MSU Brightness Independent PSNR MSU Drop Frame Metric MSU Noise Estimation Metric MSU Scene Change Detector MSU VQMT FAQ MSU Human Perceptual Quality Metric - several metrics for exact visual tests (Top!) Implemented metrics short info: ITU-R BT.500-11: DSIS, DSCQS I & II, SCACJ; EBU: SAMVIQ; MSUCQE MSU PVQ Metric Tool FAQ
Video codecs projects Different research and development projects on video codecs MSU Lossless Video Codec (Top!) MSU Screen Capture Lossless Codec (Top!) MSU MPEG-2 Video Codec x264 Codec Improvement	Other Other information Crazy gallery (filters screams :) License for commercial usage of MSU VideoGroup Public Software (please be careful: some soft like metrics has another license!)

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Last updated: 10-March-2011

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Search (Russian): 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

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© Dr. D.Vatolin, Dr. M.Smirnov, A.Ratushnyak, V.Yoockin, content, 2001–2008
© A.Andreev, pictures, 2002

© Dr. D.Vatolin, Dr. M.Smirnov, content, 2008–2011

© 2005–2011 Video Group of MSU Graphics and Media Lab