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Algorithm: Dr. Dmitriy Vatolin,
Anton Obuhov, Sergey Grishin
Implementation: Anton Obuhov

About

Filter is intended for recovering quality of video ripped from DVD (for example, when it contains 4 hours of video data), VideoCD, shot on cameraphone or after decompressing by DivX, XviD, H.26x (H.261, H.263, H.264). It performs the accurate blockiness artifact removal, which appears as the grid of squares laid over the video.

Filter automatically determines the blockiness' strength on the frame and in the concrete part of it, the processed video contains maximum details from the original video. The blockiness criterions guarantee the accurate work of every filter component in both hard and soft blockiness cases. Thus, filter will process marginally when on scenes with slow motion, while it will smooth very hard in the case of fast motion in the same film.

The main advantages of the filter are:

• The processing raises the PSNR quality metric of processed video in comparison with the original video
• Real-time processing on 2*CIF video
• Improved hard blockiness processing (video shot by cameraphones or web cameras)
• The unaligned blockiness processing option
• Simple and convenient user interface with the on-the-fly filter processing results in the Preview window

Settings

Filter's interface

Filter's interface allows to adjust the main parameters of processing.
Tip: The "Preview" button allows to instantly observe the results of filter settings modification.
Tip: You can speed up the processing by unchecking some options.

Use block preprocessor
Enables block preprocessing. You can see the example of degraded movie with a lot of blockiness, deblocked with preprocessing and without it:

Preprocess unaligned
In case of slow motion unaligned blockiness may appear. Such blockiness is the problem for the most of deblocking techniques. If the option "Preprocess unaligned" is checked, the filter searches areas with unaligned blockiness and processes them. There are some examples below:

Preprocess chroma
Enables preprocessing of color planes.

Process chroma
Enables processing of color planes.

Using AviSynth

Filter supports Job Control, and it can be used from AviSynth. Example:

LoadVirtualDubPlugin("...\MSU_Smart_Deblocking.vdf","MSU_Smart_Deblocking", 0)
clip=AVISource("source.avi", false, "RGB24") 
clip.ConvertToRGB32.MSU_Smart_Deblocking(1, 1, 1, 1)

The values passed to the filter in line 3:
1) Enable block preprocessor (0,1)
2) Preprocess unaligned (0,1)
3) Preprocess chroma (0,1)
4) Process chroma (0,1)

Examples

Let's take a look on how filter processes the test sequence "Battle" (XviD, 1-pass, CBR, 100kbs):

The next sample is an example of processing the sequence "flower" (XviD, 1-pass, CBR, 100kbs):

Download

• Unpack this file in the folder "Plugins" in VirtualDub directory (file size 112 kb)

Change log

MSU Smart Deblocking 0.8:
Improved block preprocessing algorithm
Improved main deblocking algorithm
The processing improves the PSNR quality metric of uncompressed and the processed videos
Speed and memory optimization, in comparison with the version 0.5:
        • without preprocessing - up to 2.7 times
        • with preprocessing - up to 2.4 times
Real-time processing of 2*CIF video
Simple user interface
Removed the "directional filtration" option
Fixed problem with yellow hue of the processed video

MSU Smart Deblocking 0.5:
Improved main deblocking algorithm
Improved color processing algorithm
Improved blockiness preprocessor
Improved unaligned blockiness preprocessor
Added directional filtering control (on/off)
Added save/load directional filtering parameters in job control
Added Edge Sensitivity control
Fixed blockiness creation bug in flat background areas
Minimal speed optimization

MSU Smart Deblocking 0.1:
First public release

See also

• MSU Deblocking v2.2 filter page, used in comparison above

Another resources

Video resources:

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 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 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 5-th MPEG4-AVC/H.264 Comparison (New!) Codec Analysis for Companies: (New!) Research and Development Projects (New!) MSU Video Codecs Scoring System (New!) MSU Video Quality Measurement Tool (New!) 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: 07-December-2007

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Search (Russian): Server size: 7898 files, 968Mb (Server statistics)

Project updated by
Server Team and MSU Video Group

Project sponsored by YUVsoft Corp.

Project supported by MSU Graphics & Media Lab