MSU Perceptual Video Quality tool

DSIS (Double Stimulus Impairment Scale)

This method is described in ITU-R BT.500-11.

In this method videos are shown consequently in pairs: first one is the reference, and expert is informed about it, second one is impaired. After their playback, expert is asked to give his opinion using impairment scale:

DSCQS (Double Stimulus Continuous Quality Scale) type I and type II

This method is described in ITU-R BT.500-11.

In type I videos are played in pairs in one playback window. Each pair is repeated a given amount of times ("repetition" parameter in the Task Manager). During playback expert is free to switch between two videos, named "Sequence A" and "Sequence B" by pressing Tab button. One of videos is the reference one, but expert is not informed about it. After playback expert is asked to give his opinion about each video sequence.

In type II (which is used more often) videos are played in pairs, and both videos are shown simultaneously. Each pair is repeated a given amount of times ("repetition" parameter in the Task Manager). As in type I, one of videos is the reference one, but expert is not informed about it. Impairment scale is the same as in type I.

SCACJ (Stimulus Comparison Adjectival Categorical Judgement)

This method is described in ITU-R BT.500-11.

In this method two sequences are played simultaneously, and after playback expert is asked to give his opinion using following comparison scale:

SAMVIQ (Subjective Assessment Method for Video Quality evaluation)

This new method was created by EBU and was recently sent for standartization.

During test procedure expert is able to play any sequence from the test set and give it mark, plus he is able to play reference video. Mark is in the range from 0 to 100.

MSUCQE (MSU Continuous Quality Evaluation)

This method implements idea of continuous evaluation: two sequences are played simultaneously, and if during playback expert thinks that one sequence is worse than another, he should click left or right arrow button on his keyboard, depending on a position of the sequence he dislikes. In this case red mark appears on top of the video the expert is voting against.

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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 MSU Frame Rate Conversion MSU Image Restoration MSU Denoising (Top!) (New!) 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	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 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	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: 12-October-2007

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Server Team and MSU Video Group

Project sponsored by YUVsoft Corp.

Project supported by MSU Graphics & Media Lab