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621. Removing of blocking effect from video | Graphics and Media Lab
... About lab . ... MSU Graphics & Media Lab (Video Group) . The filter is intended for recovering visual quality of video ripped from DVD (for example, when it contains 4 hours of video data), VideoCD or after decompressing by H.261, H.263, H.264, DivX, XviD, etc. The algorithm decreases blocking artifacts, significantly improving visual quality of video. Filter automatically determines the blockiness's strength on the frame and in the certain part of it, preserving the maximum of details. ...
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Ссылки http://graphics.cs.msu.ru/en/node/956 -- 13.9 Кб -- 09.04.2016
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622. Removing of brightness flicker in video | Graphics and Media Lab
... About lab . ... Contact person: Dmitriy S. Vatolin (dmitriy@graphics.cs.msu.ru) . MSU Graphics & Media Lab (Video Group) . The filter is intended for processing video with flicker effect (fast and abrupt frame brightness changes). ... The graph for MSU Deflicker filter has same smoothness as graph of D.Graft's filter, but MSU Deflicker filter better corresponds to global brightness change along the movie. Now let's consider work of the filter in case of frame brightness jump. ...
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Ссылки http://graphics.cs.msu.ru/en/node/955 -- 12.8 Кб -- 09.04.2016
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623. Removal of noise from video | Graphics and Media Lab
... About lab . ... Contact person: Dmitriy S. Vatolin (dmitriy@graphics.cs.msu.ru) . MSU Graphics & Media Lab (Video Group) . The filter is designed for noisy video stream processing, video quality improvement, or video preprocessing (e.g. for preprocessing before compression or deinterlacing). ... Let's compare source frame with the frame processed by MSU Denoising Filter: . ... Frame processed by MSU Denoising Filter . ... Description of MSU Denoising (free) & MSU Noise Removal filters. ...
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Ссылки http://graphics.cs.msu.ru/en/node/954 -- 14.7 Кб -- 09.04.2016
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624. Smart enhance of frame sharpness | Graphics and Media Lab
... About lab . ... Online Journal "Computer graphics and multimedia" (in russian) . ... MSU Graphics & Media Lab (Video Group) . The filter allows to enhance image and video sharpness with minimum noise amplification. ... Source image . Image processed by Smart Sharpen Filter . ... A fragment of source image . The fragment processed by Smart Sharpen Filter . ... Filter for VirtualDub MSU Smart Sharpen (36 KB, ZIP) . ... Detailed description of MSU Smart Sharpen filter . ...
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Ссылки http://graphics.cs.msu.ru/en/node/952 -- 13.5 Кб -- 09.04.2016
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625. Automatic fixing of shifted fields in video | Graphics and Media Lab
... MSU Graphics & Media Lab (Video Group) . It is a free AviSynth filter for fixing situation when odd and even lines of source frame are placed in alternate output frames and other similar problems. ... If this position exists, optimal odd lines are placed into the current frame, otherwise (for example when odd lines field is located in one frame after even lines, and we are in the last frame) the odd field is interpolated, or no changes are done (behavior depends on filter's settings). ...
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Ссылки http://graphics.cs.msu.ru/en/node/951 -- 12.3 Кб -- 09.04.2016
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626. Old film restoration | Graphics and Media Lab
... About lab . ... Online Journal "Computer graphics and multimedia" (in russian) . ... MSU Graphics & Media Lab (Video Group) . The filter is intended for recovering an old film by removing vertical scratches, noise, tapes defects and other artifacts that can be met in an old cinema. ... Let's consider job of the filter on the test sequences "4msu". source frame from the 4msu03 sequence . frame from the 4msu03 sequence after the filter . ... frame from the 4msu05 sequence after the filter . ...
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Ссылки http://graphics.cs.msu.ru/en/node/950 -- 11.9 Кб -- 09.04.2016
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627. High-quality video resolution enhancement | Graphics and Media Lab
... MSU Graphics & Media Lab (Video Group) . ... source frame of 'news' movie and frame processed with MSU Super-Resolution filter . ... source frame of ''toy'' movie and frame processed with MSU Super-Resolution filter . foreman", source video and video processed with MSU Super-Resolution filter (340 KB, AVI) . news", source video and video processed with MSU Super-Resolution filter ( 974 KB, AVI) . toy", source video and video processed with MSU Super-Resolution filter ( 660 KB, AVI) . ...
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Ссылки http://graphics.cs.msu.ru/en/node/949 -- 12.5 Кб -- 09.04.2016
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628. High-quality increase of video color depth | Graphics and Media Lab
... About lab . ... Online Journal "Computer graphics and multimedia" (in russian) . ... MSU Graphics & Media Lab (Video Group) . The filter is intended for increasing the colour depth of video (bits per pixel) while preserving details and borders. This filter utilizes multi-frame motion compensation and adaptive noise removal methods to increase color depth of video and preserve details. ... Filter was applied to colour depth increasing from 5 to 8 bits per channel. ...
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Ссылки http://graphics.cs.msu.ru/en/node/948 -- 12.7 Кб -- 09.04.2016
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629. Video Frame Rate Double Up-Conversion | Graphics and Media Lab
... About lab . ... MSU Graphics & Media Lab (Video Group) . Algorithm allows to double frame rate (fps) of the video stream. ... D.Vatolin, S.Grishin, "Video Frame Rate Conversion Method Based on Compensated Frames Interpolation", "New Information Technologies in Automated Systems" Seminar at M.V.Keldysh Institute of Applied Mathematics (2006). ... D.Vatolin, S.Grishin, "Double Up-conversion of Video Frame Rate Based on Two-Dimensional Motion Compensation", "Programming" Magazine (2006). ...
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Ссылки http://graphics.cs.msu.ru/en/node/947 -- 13.6 Кб -- 09.04.2016
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630. Smart removal of blocking effects from video | Graphics and Media Lab
... About lab . ... MSU Graphics & Media Lab (Video Group) . The filter is intended for high quality recovering visual quality of video compressed using conventional block-transform-based codecs (for example, video ripped from DVD, VideoCD or after decompressing by H.261, H.263, H.264, DivX, XviD, etc). ... Hard blockiness suppression is applied in case of extremely low bitrate when entirely flat single color blocks are appeared on the frame. ... Decompressed frame . ... Frame after Smart Deblocking . ...
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Ссылки http://graphics.cs.msu.ru/en/node/946 -- 18.0 Кб -- 09.04.2016
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631. TV tuner signal recovery | Graphics and Media Lab
... News . About lab . ... Online Journal "Computer graphics and multimedia" (in russian) . ... MSU Graphics & Media Lab (Video Group) . This filter was designed for TV signal restoration: denoising, from poor signal or from signal with mirror ghosts. The filter eliminates: . whole noise on the frame; . color spots artifacts (t.e. "very ugly", look at shirt); . ... Frame from ''News'' before use Tuner TV restore Filter . Frame from ''News'' after use Tuner TV restore Filter . ...
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Ссылки http://graphics.cs.msu.ru/en/node/944 -- 11.1 Кб -- 09.04.2016
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632. Removal of comb effect from video | Graphics and Media Lab
... About lab . ... Online Journal "Computer graphics and multimedia" (in russian) . ... Contact person: Dmitriy S. Vatolin (dmitriy@graphics.cs.msu.ru) . MSU Graphics & Media Lab (Video Group) . The filter is designed to suppress comb effect, also known as interlacing, in motion pictures. As opposed to other available filters, MSU Deinterlacing . ... The frame processed by MSU Deinterlacing . ... Frames from sequences tennis & mobl: AlparySoft, Decomb and MSU SMC deinterlacer. ...
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Ссылки http://graphics.cs.msu.ru/en/node/943 -- 14.9 Кб -- 09.04.2016
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633. Video Frame Rate N-Times Up-Conversion | Graphics and Media Lab
... MSU Graphics & Media Lab (Video Group) . The algorithm allows to increase video frame rate (fps) by the factor equal to any integer number. ... Frame rate conversion is done as shown on the picture below: . ... arbitrary whole number of interpolated frames between reference frames. ... Segmentation of original frames with detection of areas with complex motion allows to avoid visual degradation of interpolated frames even on scenes with hard motion. ... Video Frame Rate Double Up-Conversion . ...
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Ссылки http://graphics.cs.msu.ru/en/node/942 -- 15.5 Кб -- 09.04.2016
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634. Objective Metrics of Video Quality (MSU VQM tool) | Graphics and Media Lab
... About lab . ... Tool for objective video quality measurements, development of a new objective metrics. During recent years, many objective video quality metrics were developed. ... To ease usage and evaluation of existing and new objective metrics we decided to develop a tool for objective video quality evaluation. MSU Video Quality Measurement tool (MSU VQM) helps in our final goal to create objective measure that will be more adequate to subjective quality than all others. ... MSU Blocking . ...
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Ссылки http://graphics.cs.msu.ru/en/node/941 -- 13.2 Кб -- 09.04.2016
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635. Subjective Comparison of Video Codecs | Graphics and Media Lab
... About lab . ... Subjective quality assessments for modern codecs and objective metrics adequacy verification . During last few years, many comparisons of video, audio and image codecs were held using various objective metrics like PSNR, VQM or SSIM. ... Our research was targeted on methods of subjective video quality assessment and evaluation of objective quality metrics. ... Full analysis of results of subjective comparison and precision of objective metrics can be found in comparison report: . ...
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Ссылки http://graphics.cs.msu.ru/en/node/940 -- 11.9 Кб -- 09.04.2016
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636. Lossless Video Compression (MSU Lossless Video Codec) | Graphics and Media Lab
... MSU Graphics & Media Lab (Video Group) . ... This codec is intended for lossless video compression (used for saving master copies or intermediate rendering results). ... As seen from the graphs below, MSU Lossless Video Codec gives the best result compared to all of the available codecs. MSU Lossless video codec version 0.6.0 from 19.09.2005 . MSU Lossless video codec 0.6.0, EXE installer (157kb) . MSU Lossless video codec 0.6.0, EXE installer in ZIP (for some firewalls) (126kb) . ...
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Ссылки http://graphics.cs.msu.ru/en/node/939 -- 11.8 Кб -- 09.04.2016
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637. Subjective Assessment of Video Quality (MSU PVQ tool) | Graphics and Media Lab
... About lab . ... Contact person: Dmitriy S. Vatolin (dmitriy@graphics.cs.msu.ru) . Methods of subjective video quality assessment . ... Our research is aimed at methods of subjective video quality assessments and evaluation of objective quality metrics. ... Because of the lack of tools for conducting subjective tests in the public domain, we created MSU Perceptual Video Quality tool. ... MSU CQE . ... MSU PVQ tool was used for the Subjective Comparison of Modern Video Codecs. ...
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Ссылки http://graphics.cs.msu.ru/en/node/938 -- 11.6 Кб -- 09.04.2016
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638. Objective comparison of H.264 video codecs | Graphics and Media Lab
... About lab . ... This project deals with objective comparison of video codecs, mostly of H.264 standard. In 2005-2006 two comparsons of video codecs were conducted by our lab. ... Mpegable AVC Codec . ... Used for comparison with H.264 codecs as well tuned codec from previous generation MPEG-4 ASP) . ... DivX 6.0 ( Not H.264 video codec, tested as reference codec) . ... First Annual MSU MPEG-4 AVC/H.264 Video Codecs Comparison . Second Annual MSU MPEG-4 AVC/H.264 Video Codecs Comparison . ...
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Ссылки http://graphics.cs.msu.ru/en/node/937 -- 11.1 Кб -- 09.04.2016
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639. x264 codec improvement | Graphics and Media Lab
... x264 is an open source codec of standard MPEG4 AVC/H.264, developed by programmers from all over the world. ... Accumulated during previous frames' compressions statistic is actively used by codec to improve effectiveness of adaptive models. ... These parameters are used only before encoding start, so, our improvements are more significant for short sequences. ... 3 Results of codec x264 modification on "flower" sequence . ... 5 Results of codec x264 modification on "flower" sequence, low bitrates ....
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Ссылки http://graphics.cs.msu.ru/en/node/936 -- 16.5 Кб -- 09.04.2016
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640. Videocodecs tuning | Graphics and Media Lab
... About lab . ... One of the main tasks during codec's development and tuning is evaluation of compressed video quality and measurements' data management. ... Some of our publicly available codecs comparison reports are located and can be freely downloaded from MSU videocodecs comparison webpage. x264 is a freeware codec of MPEG-4 AVC/H.264 standard. ... Example of x264 parameters analysis . Another our project related with x264 codec is analysis and improvement of codec's initial parameters. ...
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Ссылки http://graphics.cs.msu.ru/en/node/935 -- 11.6 Кб -- 09.04.2016
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