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Method ideas: Dr. Dmitriy Vatolin,
Alexander Parshin
Implementation: Alexey Moiseytsev

One of the most prominent coding artifacts in highly compressed animated video are the ringing artifacts. Ringing noise preferably manifest itself around edges due to coarse quantization. The filter is designed for quality improvement of compressed cartoons like video by deleting ringing artifacts.

Change Log

Version 1.3
[+] GUI improvement
[+] Added motion adaptive mode (filter speedup!)
[+] Added new algorithm Image Similarity (beta version)

Version 1.1
[+] First filter release

Settings

Simple mode

This mode is intended for peoples, who want get good results without additional manual filter tuning. Simple mode settings:

• Algorithm Quality - Select algorithm by quality. One can select algorithm according to desired speed/quality tradeoff.
• Compression Artefacts - Set quantity of compression artifacts in processed cartoon.
• Motion Adaptive - Turn this feature on to sppedup algorithms in cartoons with slow motion. The same option is available in the ôàìôòñóâ mode

Advanced mode

This mode is intended for peoples, who want get best results using precise algorithms tuning.

Combo box "Method" allows select one of four implemented algorithms.

Simple Adaptive Filter

• Smoothness - Allows to control strength of filtration.
• Quantization Threshold - Controls amount of ringing artifacts in source video.

Fuzzy Adaptive Filter

There are some presets, which allow quickly selecting filter configuration (use "Preset" list).

Multipass Bilateral Filter

• Iterations
  If this parameter is greater, more texture details replace by flat regions.
• Geometric Dispersion
  Allows to change filter size.
• Photometric Dispersion
  Allows to control amount of ringing artifacts.

Similarity DB Filter (beta version)

Job control and integration with AviSynth

Filter supports VirtualDub Job Control, and it can be used from AviSynth. Some examples are listed below.

Simple Adaptive Filter:

LoadVirtualDubPlugin("MSU_cartoon_restore.vdf","MSUCartoonRestore", 0) 

clip=AVISource("D:\work\video\film.avi", false, "RGB24")

clip.ConvertToRGB32.MSUCartoonRestore("simple", Smoothness, Threshold)
    

• Smoothness - Integer between 1 and 15. Sets filter strength.
• Threshold - Integer between 1 and 100. Estimates amount of ringing artifacts in source video.

LoadVirtualDubPlugin("MSU_cartoon_restore.vdf","MSUCartoonRestore", 0) 

clip=AVISource("D:\work\video\film.avi", false, "RGB24")

clip.ConvertToRGB32.MSUCartoonRestore("fuzzy", Strength10, Strength20, Strength30, Strength40, Strength50,  
                          Strength60, Strength70, Strength80, Strength90, Strength100, ShowBlockType)
    

• Strength* - Integers between 0 and 32. Sets filter strength depends on block type.
• ShowBlockType - 0 or 1 (optional). Turns on visualization of block types.

LoadVirtualDubPlugin("MSU_cartoon_restore.vdf","MSUCartoonRestore", 0) 

clip=AVISource("D:\work\video\film.avi", false, "RGB24")

clip.ConvertToRGB32.MSUCartoonRestore("bilateral", Iterations, GeometricDispersion, PhotometricDispersion)
    

• Iterations - Integer between 1 and 5. Sets the number of passes.
• GeometricDispersion - Integer between 0 and 75. Sets the filter size.
• PhotometricDispersion - Integer between 0 and 200. Estimates amount of ringing artifacts in source video.

Examples

Source frame	Frame processed by MSU Cartoon Restore
Source frame	Frame processed by MSU Cartoon Restore

Source frame	Simple Adaptive Filter
Fuzzy Adaptive Filter	Multipass Bilateral FIlter

Download

• MSU Cartoon Restore (950 KB, ZIP).
  Unpack this file into the "Plugins" folder of VirtualDub directory.

Other resources

Video resources:

Public MSU video filters Here are available VirtualDub and AviSynth filters. Commonly we develop a whole family of some kind of a filter. 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 (New!) MSU Frame Rate Conversion (New!) MSU Image Restoration (New!) 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 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 filters FAQ (Read me!) MSU filters statistics (New!)	MSU 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. Automatic Objects Segmentation (New!) Semiautomatic Objects Segmentation New Frame Rate Conversion (New!) New Deinterlacer (New!) 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 (New!) Deblurring filter Video Content Marking
Codecs comparisons Objective and subjective quality evaluation tests for video and image codecs 4-th MPEG4-AVC/H.264 Comparison (New!) Lossless Video Codecs Comparison 2007 (New!) 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) Ads link: x264 parameters efficiency comparison	Video quality metrics Programs with different objective and subjective video quality metrics implementation MSU Video Quality Metric - objective metrics for codecs and filters comparison (Top!) Implemented metrics short info: PSNR, Delta, MSAD, MSE, SSIM, VQM, MSU Blurring, MSU Blocking MSU Brightness Flicking Metric MSU Brightness Independent PSNR MSU Drop Frame Metric MSU Noise Estimation Metric MSU VQM Metric Tool 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: 11-April-2008

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Search (Russian): Server size: 7485 files, 923Mb (Server statistics)

Project updated by
Server Team and MSU Video Group

Project sponsored by YUVsoft Corp.

Project supported by MSU Graphics & Media Lab