DOCSLIB.ORG

Patent Application Publication (10) Pub. No.: US 2007/0052846A1 Adams (43) Pub

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Patent Application Publication (10) Pub. No.: US 2007/0052846A1 Adams (43) Pub US 20070052846A1 (19) United States (12) Patent Application Publication (10) Pub. No.: US 2007/0052846A1 Adams (43) Pub. Date: Mar. 8, 2007 (54) SOURCE-ADAPTIVE VIDEO Publication Classification DENTERLACER (51) Int. Cl. (76) Inventor: Dale Richard Adams, Gualala, CA H04N 7/01 (2006.01) (US) Correspondence Address: (52)52) U.S. Cl. .............................................................. 348/452 PERKINS COE LLP P.O. BOX 21.68 MENLO PARK, CA 94026 (US) (57) ABSTRACT (21) Appl. No.: 11/512,754 1-1. A method is described for deinterlacing an interlaced video (22) Filed: Aug. 29, 2006 stream. The method includes detecting an occurrence of Related U.S. Application Data groups of adjacent fields that are derived from a common original image frame source, and merging field pairs of the (60) Provisional application No. 60/715,711, filed on Sep. interlaced video stream to create a non-interlaced video 8, 2005. stream output. -1 4OO PERFORMA CORRELATION OPERATION BETWEEN FIELD PARS SAVE A HISTORY OF CORRELATION MEASUREMENTS 411 DETERMINE CORRRELATION MAXIMUM, MINIMUM, DYNAMIC RANGE, AND WHETHER 421. SCENE TRANSiTIONS HAVE OCCURRED CALCULATE A THRESHOLD VALUE 431 COMPARE 1-FIELD DIFFERENCE AND 2-FIELD 441 DFFERENCE TO RESPECTIVE THRESHOLDS EXAMINE COMPARSON HISTORY TO 451 DETERMINEF REPEATING PATTERNS EXIST ASSIGNA STATE VALUE TO THE CURRENT FELD 461 ACOUIRE LOCK ON SCNAL 471 DETERMINE HOW TO CONSTRUCT ASEQUENCE OF THE DENTERLACED OUTPUT FRAME 481 FROM THE SEQUENCE OF FIELDS OUTPUT THE SEOUENCE OF DENTERLACED FRAMES 491 Patent Application Publication Mar. 8, 2007 Sheet 1 of 11 US 2007/0052846 A1 101 FIG. 1A PRIOR ART 102 FIG. 1B PRIOR ART : 103 FIG. 1C PRIOR ART Patent Application Publication Mar. 8, 2007 Sheet 2 of 11 US 2007/005284.6 A1 CONSECUTIVE TEMPORAL INTERLACED FIELDS o H r rn vir Ln o n o H n m n Ln to n - - - - - - - - - - - - - - - - O O. O. O. O. O. O. O. O O. O. O. O. O. O. O U U U U U U U U U U U U U U U U LNEO P00 ero o so opsosovo LINE 0 ------|-- -T----T---- mum Hmmm LINE 1 LNE 1 PO1 P11P21 P31 iP41PS1P61 P71 milmmlum milmmell LINE 2 LCLCCLLCCP02P12 P22. P32 P42.P52P62P72. LINE 2 l-Hill LINE 3: LINE 3 iP03P13P23i P33 PPP LINE 4 P04 P14 P24 P34 P44P54P64P74 LINE 4 mmm Hm LINE 5 NES P05 P15. P25IP35 P45P55P65 P75 HHuman kmmHmmm LINE 6 P06 P16 26P36P46Psorse P76 LINE 6 . --------. LINE 7Poz Piz InP27p37P47576 n- in . P77. LINE 7 - 2O1T. y DEINTERLACING MODU LE 203 s s s LINE of --s T s s LNE 1 f up as LINE 2 . ------------L--. LINE 3: -------------- PROGRESSIVE LINE 4 i FRAME LINE 5 H. 204 on a m LINE 6 ----------------- LINE 7 ----------------- FIG. 2 Patent Application Publication Mar. 8, 2007 Sheet 3 of 11 US 2007/0052846A1 110 NTERLACED VIDEO SIGNAL VIDEO SIGNAL PROCESSOR DISPLAY SOURCE 60 DEVICE 80 70 DENTERLACING MODULE 2O3 DEINTERLACED VIDEO SIGNAL FIG. 3 Patent Application Publication Mar. 8, 2007 Sheet 4 of 11 US 2007/0052846A1 u1 COMPARE A SEQUENCE OF FIELD PARS 301 DETERMINEA MEASURE OF SIMLARITY BEWEEN THE FIELD PARS 311 321 ISA SEOUENCE OF DENTERLACE THE FIELD PARS FROM SEOUENCE OF FIELD 341 PARS USING OTHER THE SAME SOURCE2 TECHNIOUES MERGE FIELDS TO RECONSTRUCT A SEOUENCE OF ORIGINAL FRAMES FIG. 4 Patent Application Publication Mar. 8, 2007 Sheet 5 of 11 US 2007/0052846A1 u-400 PERFORMA CORRELATION OPERATION 401 BETWEEN FIELD PARS SAVE A HISTORY OF 411 CORRELATION MEASUREMENTS DETERMINE CORRRELATION MAXIMUM, MINIMUM, DYNAMIC RANGE, AND WHETHER 421. SCENE TRANSiTIONS HAVE OCCURRED CALCULATE ATHRESHOLD VALUE 431 COMPARE 1-FIELD DIFFERENCE AND 2-FIELD 441 DIFFERENCE TO RESPECTIVE THRESHOLDS EXAMINE COMPARISON HISTORY TO 451 DETERMINEF REPEATING PATTERNS EXIST ASSIGNA STATE VALUE TO THE CURRENT FIELD 461 ACOUIRE LOCK ON SIGNAL 471 DETERMINE HOW TO CONSTRUCT A SEOUENCE OF THE DEINTERLACED OUTPUT FRAME 481 FROM THE SEQUENCE OF FIELDS OUTPUT THE SEQUENCE OF DEINTERLACED FRAMES 491 FIG. 5 Patent Application Publication Mar. 8, 2007 Sheet 6 of 11 US 2007/0052846 A1 SCITHIAHVTIWISSGTBIHINBH3+HIGSCITBIHSGTBHINBHEBHIGSGITHIA(WIIWIS BWVHHBOHDOS TÕõ Patent Application Publication Mar. 8, 2007 Sheet 7 of 11 US 2007/0052846 A1 SGT3|?LNBH3+HICSCITBIHLNBH3+HIOLNBH3.J.HIGSOTB|+LNBYE-HIG] Z‘DI Patent Application Publication US 2007/0052846 A1 BWVH-IHOHDOS T?? ZS9S_LNHWNOISSVELVIS Patent Application Publication Mar. 8, 2007 Sheet 9 of 11 US 2007/0052846 A1 Z99SLNBWNDISSWELWLS SOTEII-ISO]TE|-3SOTEI-JSOTEI-SOTB||-||089SCITEI-829 Patent Application Publication Mar. 8, 2007 Sheet 10 of 11 US 2007/0052846A1 CORRELATION VALUE MAX 402 -- DYNAMIC RANGE 404 -- MIN 403 TIME CORRELATION VALUE MAX 405 MAX 402 MIN 403 TIME CORRELATION VALUE MAX 402 MIN 403 Patent Application Publication Mar. 8, 2007 Sheet 11 of 11 US 2007/0052846A1 SCENE TRANSITION MOMENTARY SPIKE CORRELATION VALUE MAX 402 MIN 403 TIME FIG. 13 US 2007/0052846 A1 Mar. 8, 2007 SOURCE-ADAPTIVE VIDEO DENTERLACER be detected. If the cadence is known, then the original film frame can be reconstructed by simply combining the correct CROSS-REFERENCE TO RELATED two fields in a weaving operation. However, cadence detec APPLICATION tion systems are inadequate because they are generally 0001. This Application claims the benefit of United States limited to 3:2 pulldown or 2:2 pulldown. Further cadence Provisional Application No. 60/715,711 entitled “Source detection systems incur a number of problems when the Adaptive Video Deinterlacer” filed on Sep. 8, 2005, which cadence pattern is broken for some reason, Such as video is incorporated by reference. edits. 0008. The foregoing examples of the related art and BACKGROUND limitations related therewith are intended to be illustrative and not exclusive. Other limitations of the related art will 0002 Interlaced scanning and progressive scanning are become apparent to those of skill in the art upon a reading typical scanning methods employed in a video display of the specification and a study of the drawings. device. Interlaced scanning has been employed in current National Television Systems Committee (“NTSC) televi SUMMARY sion (“TV) systems. For the video display shown in FIGS. 1A-1C, even and odd fields would be interlaced sequentially 0009. The following embodiments and aspects thereof and alternately on the screen when displaying a video image. are described and illustrated in conjunction with systems, For FIGS. 1A-1C, for interlaced scanning, the solid lines tools, and methods that are meant to be exemplary and would represent lines being scanned at present, and the illustrative, not limiting in scope. In various embodiments, dotted lines would represent lines Scanned for a preceding one or more of the above-described problems have been display. reduced or eliminated, while other embodiments are directed 0003 Deinterlacing an interlaced signal provides numer to other improvements. ous advantages for improving video quality. Specifically, 0010) A technique for deinterlacing an interlaced video deinterlacing can remove interlace motion artifacts, increase stream involves the detection and merging of fields. An apparent vertical resolution, and reduce flicker. Furthermore, example of a method according to the technique involves deinterlacing is often required because modern televisions detecting an occurrence of groups of adjacent fields that are are inherently progressive and the video feed is broadcast in derived from a common original image frame source. Field interlaced form. pairs of the interlaced video stream can be merged to form 0004 There are three common techniques for deinterlac a deinterlaced signal. ing an interlaced video signal. A first deinterlacing technique 0011. In certain embodiments, the detection of an occur is known as weaving. Weaving involves combining two rence of groups of adjacent fields that are derived from a adjacent fields into one frame. While this technique main common image frame source can involve determining if tains vertical resolution, it has the problem of creating fields pairs of the interlaced video stream are similar. If the interlace motion artifacts if motion is present. fields pairs are similar, the field pairs can be merged. If more than two adjacent field pairs are different, an alternate 0005. A second deinterlacing technique is known as deinterlacing technique can be implemented, such as motion vertical interpolation. Vertical interpolation involves aver adaptive deinterlacing. aging at least two scan lines to generate a new scan line. The technique is repeated for all scan lines and creates a full 0012. In some embodiments, determining if field pairs frame from a single video field. While vertical interpolation are similar can involve performing a correlation operation allows a progressive picture to be generated from one video between field pairs. In other embodiments, a difference field, half of the resolution of the video feed is lost. operation between field pairs can be performed. Additional embodiments can determine whether a scene transition 0006 Another deinterlacing technique is known as occurred in order to aid in the determination of similar and motion adaptive deinterlacing. For this technique, adjacent different field pairs. An alternate embodiment can involve fields are merged for still areas of the picture and vertical calculating a threshold value based on one or more factors. interpolation is used for areas of movement. To accomplish Following this embodiment, the factors can include a history this, motion, on a sample-by-sample basis, is detected over of correlation operation values between field pairs, a mini the entire picture in real time, requiring processing of several mum and maximum value in the history of correlation fields of a video signal. operation values, a minimum and maximum value for a 0007 To improve the results of the common techniques, range of correlation values, detecting scene transitions, and a cadence detection algorithm can be implemented. In order assigning State values. for the progressive source to be converted to an interlaced format, each frame from that Source must be represented as 0013 Another example a method according to the tech multiple fields in the interlaced format - i.e., a single frame nique involves detecting an occurrence of groups of con is converted to 20r more interlaced fields.
Load more

Recommended publications
  • Problems on Video Coding
    Problems on Video Coding Guan-Ju Peng Graduate Institute of Electronics Engineering, National Taiwan University 1 Problem 1 How to display digital video designed for TV industry on a computer screen with best quality? .. Hint: computer display is 4:3, 1280x1024, 72 Hz, pro- gressive. Supposing the digital TV display is 4:3 640x480, 30Hz, Interlaced. The problem becomes how to convert the video signal from 4:3 640x480, 60Hz, Interlaced to 4:3, 1280x1024, 72 Hz, progressive. First, we convert the video stream from interlaced video to progressive signal by a suitable de-interlacing algorithm. Thus, we introduce the de-interlacing algorithms ¯rst in the following. 1.1 De-Interlacing Generally speaking, there are three kinds of methods to perform de-interlacing. 1.1.1 Field Combination Deinterlacing ² Weaving is done by adding consecutive ¯elds together. This is ¯ne when the image hasn't changed between ¯elds, but any change will result in artifacts known as "combing", when the pixels in one frame do not line up with the pixels in the other, forming a jagged edge. This technique retains full vertical resolution at the expense of half the temporal resolution. ² Blending is done by blending, or averaging consecutive ¯elds to be displayed as one frame. Combing is avoided because both of the images are on top of each other. This instead leaves an artifact known as ghosting. The image loses vertical resolution and 1 temporal resolution. This is often combined with a vertical resize so that the output has no numerical loss in vertical resolution. The problem with this is that there is a quality loss, because the image has been downsized then upsized.
    [Show full text]
  • Viarte Remastering of SD to HD/UHD & HDR Guide
    Page 1/3 Viarte SDR-to-HDR Up-conversion & Digital Remastering of SD/HD to HD/UHD Services 1. Introduction As trends move rapidly towards online content distribution and bigger and brighter progressive UHD/HDR displays, the need for high quality remastering of SD/HD and SDR to HDR up-conversion of valuable SD/HD/UHD assets becomes more relevant than ever. Various technical issues inherited in legacy content hinder the immersive viewing experience one might expect from these new HDR display technologies. In particular, interlaced content need to be properly deinterlaced, and frame rate converted in order to accommodate OTT or Blu-ray re-distribution. Equally important, film grain or various noise conditions need to be addressed, so as to avoid noise being further magnified during edge-enhanced upscaling, and to avoid further perturbing any future SDR to HDR up-conversion. Film grain should no longer be regarded as an aesthetic enhancement, but rather as a costly nuisance, as it not only degrades the viewing experience, especially on brighter HDR displays, but also significantly increases HEVC/H.264 compressed bit-rates, thereby increases online distribution and storage costs. 2. Digital Remastering and SDR to HDR Up-Conversion Process There are several steps required for a high quality SD/HD to HD/UHD remastering project. The very first step may be tape scan. The digital master forms the baseline for all further quality assessment. isovideo's SD/HD to HD/UHD digital remastering services use our proprietary, state-of-the-art award- winning Viarte technology. Viarte's proprietary motion processing technology is the best available.
    [Show full text]
  • A Review and Comparison on Different Video Deinterlacing
    International Journal of Research ISSN NO:2236-6124 A Review and Comparison on Different Video Deinterlacing Methodologies 1Boyapati Bharathidevi,2Kurangi Mary Sujana,3Ashok kumar Balijepalli 1,2,3 Asst.Professor,Universal College of Engg & Technology,Perecherla,Guntur,AP,India-522438 bharathimlc@gmail.com,sujana.kurangi@gmail.com,balijepalli.ashokkumar@gmail.com Abstract— Video deinterlacing is a key technique in Interlaced videos are generally preferred in video broadcast digital video processing, particularly with the widespread and transmission systems as they reduce the amount of data to usage of LCD and plasma TVs. Interlacing is a widely used be broadcast. Transmission of interlaced videos was widely technique, for television broadcast and video recording, to popular in various television broadcasting systems such as double the perceived frame rate without increasing the NTSC [2], PAL [3], SECAM. Many broadcasting agencies bandwidth. But it presents annoying visual artifacts, such as made huge profits with interlaced videos. Video acquiring flickering and silhouette "serration," during the playback. systems on many occasions naturally acquire interlaced video Existing state-of-the-art deinterlacing methods either ignore and since this also proved be an efficient way, the popularity the temporal information to provide real-time performance of interlaced videos escalated. but lower visual quality, or estimate the motion for better deinterlacing but with a trade-off of higher computational cost. The question `to interlace or not to interlace' divides the TV and the PC communities. A proper answer requires a common understanding of what is possible nowadays in deinterlacing video signals. This paper outlines the most relevant methods, and provides a relative comparison.
    [Show full text]
  • EBU Tech 3315-2006 Archiving: Experiences with TK Transfer to Digital
    EBU – TECH 3315 Archiving: Experiences with telecine transfer of film to digital formats Source: P/HDTP Status: Report Geneva April 2006 1 Page intentionally left blank. This document is paginated for recto-verso printing Tech 3315 Archiving: Experiences with telecine transfer of film to digital formats Contents Introduction ......................................................................................................... 5 Decisions on Scanning Format .................................................................................... 5 Scanning tests ....................................................................................................... 6 The Results .......................................................................................................... 7 Observations of the influence of elements of film by specialists ........................................ 7 Observations on the results of the formal evaluations .................................................... 7 Overall conclusions .............................................................................................. 7 APPENDIX : Details of the Tests and Results ................................................................... 9 3 Archiving: Experiences with telecine transfer of film to digital formats Tech 3315 Page intentionally left blank. This document is paginated for recto-verso printing 4 Tech 3315 Archiving: Experiences with telecine transfer of film to digital formats Archiving: Experience with telecine transfer of film to digital formats
    [Show full text]
  • Video Processor, Video Upconversion & Signal Switching
    81LumagenReprint 3/1/04 1:01 PM Page 1 Equipment Review Lumagen VisionPro™ Video Processor, Video Upconversion & Signal Switching G REG R OGERS Lumagen VisionPro™ Reviewer’s Choice The Lumagen VisionPro™ Video Processor is the type of product that I like to review. First and foremost, it delivers excep- tional performance. Second, it’s an out- standing value. It provides extremely flexi- ble scaling functions and valuable input switching that isn’t included on more expen- sive processors. Third, it works as adver- tised, without frustrating bugs or design errors that compromise video quality or ren- Specifications: der important features inoperable. Inputs: Eight Programmable Inputs (BNC); Composite (Up To 8), S-Video (Up To 8), Manufactured In The U.S.A. By: Component (Up To 4), Pass-Through (Up To 2), “...blends outstanding picture SDI (Optional) Lumagen, Inc. Outputs: YPbPr/RGB (BNC) 15075 SW Koll Parkway, Suite A quality with extremely Video Processing: 3:2 & 2:2 Pulldown Beaverton, Oregon 97006 Reconstruction, Per-Pixel Motion-Adaptive Video Tel: 866 888 3330 flexible scaling functions...” Deinterlacing, Detail-Enhancing Resolution www.lumagen.com Scaling Output Resolutions: 480p To 1080p In Scan Line Product Overview Increments, Plus 1080i Dimensions (WHD Inches): 17 x 3-1/2 x 10-1/4 Price: $1,895; SDI Input Option, $400 The VisionPro ($1,895) provides two important video functions—upconversion and source switching. The versatile video processing algorithms deliver extensive more to upconversion than scaling. Analog rithms to enhance edge sharpness while control over input and output formats. Video source signals must be digitized, and stan- virtually eliminating edge-outlining artifacts.
    [Show full text]
  • High-Quality Spatial Interpolation of Interlaced Video
    High-Quality Spatial Interpolation of Interlaced Video Alexey Lukin Laboratory of Mathematical Methods of Image Processing Department of Computational Mathematics and Cybernetics Moscow State University, Moscow, Russia lukin@graphics.cs.msu.ru Abstract Deinterlacing is the process of converting of interlaced-scan video sequences into progressive scan format. It involves interpolating missing lines of video data. This paper presents a new algorithm of spatial interpolation that can be used as a part of more com- plex motion-adaptive or motion-compensated deinterlacing. It is based on edge-directional interpolation, but adds several features to improve quality and robustness: spatial averaging of directional derivatives, ”soft” mixing of interpolation directions, and use of several interpolation iterations. High quality of the proposed algo- rithm is demonstrated by visual comparison and PSNR measure- ments. Keywords: deinterlacing, edge-directional interpolation, intra- field interpolation. 1 INTRODUCTION (a) (b) Interlaced scan (or interlacing) is a technique invented in 1930-ies to improve smoothness of motion in video without increasing the bandwidth. It separates a video frame into 2 fields consisting of Figure 1: a: ”Bob” deinterlacing (line averaging), odd and even raster lines. Fields are updated on a screen in alter- b: ”weave” deinterlacing (field insertion). nating manner, which permits updating them twice as fast as when progressive scan is used, allowing capturing motion twice as often. Interlaced scan is still used in most television systems, including able, it is estimated from the video sequence. certain HDTV broadcast standards. In this paper, a new high-quality method of spatial interpolation However, many television and computer displays nowadays are of video frames in suggested.
    [Show full text]
  • Exposing Digital Forgeries in Interlaced and De-Interlaced Video Weihong Wang, Student Member, IEEE, and Hany Farid, Member, IEEE
    1 Exposing Digital Forgeries in Interlaced and De-Interlaced Video Weihong Wang, Student Member, IEEE, and Hany Farid, Member, IEEE Abstract With the advent of high-quality digital video cameras and sophisticated video editing software, it is becoming increasingly easier to tamper with digital video. A growing number of video surveillance cameras are also giving rise to an enormous amount of video data. The ability to ensure the integrity and authenticity of this data poses considerable challenges. We describe two techniques for detecting traces of tampering in de-interlaced and interlaced video. For de-interlaced video, we quantify the correlations introduced by the camera or software de-interlacing algorithms and show how tampering can disturb these correlations. For interlaced video, we show that the motion between fields of a single frame and across fields of neighboring frames should be equal. We propose an efficient way to measure these motions and show how tampering can disturb this relationship. I. INTRODUCTION Popular websites such as YouTube have given rise to a proliferation of digital video. Combined with increasingly sophisticated users equipped with cellphones and digital cameras that can record video, the Internet is awash with digital video. When coupled with sophisticated video editing software, we have begun to see an increase in the number and quality of doctored video. While the past few years has seen considerable progress in the area of digital image forensics (e.g., [1], [2], [3], [4], [5], [6], [7]), less attention has been payed to digital video forensics. In one of the only papers in this area, we previously described a technique for detecting double MPEG compression [8].
    [Show full text]
  • Deinterlacing Network for Early Interlaced Videos
    1 Rethinking deinterlacing for early interlaced videos Yang Zhao, Wei Jia, Ronggang Wang Abstract—In recent years, high-definition restoration of early videos have received much attention. Real-world interlaced videos usually contain various degradations mixed with interlacing artifacts, such as noises and compression artifacts. Unfortunately, traditional deinterlacing methods only focus on the inverse process of interlacing scanning, and cannot remove these complex and complicated artifacts. Hence, this paper proposes an image deinterlacing network (DIN), which is specifically designed for joint removal of interlacing mixed with other artifacts. The DIN is composed of two stages, i.e., a cooperative vertical interpolation stage for splitting and fully using the information of adjacent fields, and a field-merging stage to perceive movements and suppress ghost artifacts. Experimental results demonstrate the effectiveness of the proposed DIN on both synthetic and real- world test sets. Fig. 1. Illustration of the interlaced scanning mechanism. Index Terms—deinterlacing, early videos, interlacing artifacts this paper is to specifically design an effective deinterlacing network for the joint restoration tasks of interlaced frames. I. INTRODUCTION The traditional interlaced scanning mechanism can be de- Interlacing artifacts are commonly observed in many early fined as Y = S(X1; X2), where Y denotes the interlaced videos, which are caused by interlacing scanning in early frame, S(·) is the interlaced scanning function, and X1; X2 television systems, e.g., NTSC, PAL, and SECAM. As shown denote the odd and even fields. Traditional deinterlacing in Fig. 1, the odd lines and even lines of an interlaced frame are methods focus on the reversed process of S(·), which can scanned from two different half-frames, i.e., the odd/top/first be roughly divided into four categories, i.e., temporal inter- field and the even/bottom/second field.
    [Show full text]
  • Using Enhancement Data to Deinterlace 1080I HDTV
    Using enhancement data to deinterlace 1080i HDTV The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. Citation Andy L. Lin and Jae S. Lim, "Using enhancement data to deinterlace 1080i HDTV", Proc. SPIE 7798, 77980B (2010). © 2010 Copyright SPIE--The International Society for Optical Engineering As Published http://dx.doi.org/10.1117/12.859876 Publisher SPIE Version Final published version Citable link http://hdl.handle.net/1721.1/72133 Terms of Use Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. Using Enhancement Data to Deinterlace 1080i HDTV Andy L. Lina, Jae S. Limb aStanford University, 450 Serra Mall Stanford, CA 94305 bResearch Lab of Electronics, Massachusetts Institute of Technology, 77 Massachusetts Avenue., Cambridge, MA USA 02139 ABSTRACT When interlaced scan (IS) is used for television transmission, the received video must be deinterlaced to be displayed on progressive scan (PS) displays. To achieve good performance, the deinterlacing operation is typically computationally expensive. We propose a receiver compatible approach which performs a deinterlacing operation inexpensively, with good performance. At the transmitter, the system analyzes the video and transmits an additional low bit-rate stream. Existing receivers ignore this information. New receivers utilize this stream and perform a deinterlacing operation inexpensively with good performance. Results indicate that this approach can improve the digital television standard in a receiver compatible manner. Keywords: Deinterlace, receiver compatible, 1080i, 1080/60/IS, HDTV, motion adaptive deinterlacing, enhancement data 1.
    [Show full text]
  • Optimizing Brightsign Video Quality Summary Introduction
    Optimizing BrightSign Video Quality The BrightSign "compact" models are capable of producing excellent high quality High Definition video output. However, video quality can be reduced if a system isn't configured properly. This document describes what affects video quality, and how to ensure you get the best results. Summary 1. Avoid downscaling video. For example don’t display content authored for 1080i with 720p display mode. Instead, match the content authored resolution and output display mode. Another example, don't display 720p video (1280 x 720) in a zone window that is smaller (e.g. 1024 x 576). Instead, author the content to match the zone window resolution, or author it smaller so it "scales up". 2. Use a true progressive output mode i.e. neither 1080i nor 1080p60 (1080p30 is fine). 3. Pick a display with a native resolution that is the same as your output mode because a display that has a native mode of 1280x720 will scale content when displaying at 1920x1080. 4. Turn off overscan or select a monitor or mode that doesn't overscan at your chosen output mode. 5. Use progressive video content at the same frame rate as the output mode. Author your content to match your display resolution and frame rates when possible. For example, if you are using video that's 25fps, then use an output resolution that's 25, 50, or 75. 6. Use 1080p50 or 1080p60 with care; choose instead 720p or 1080p30 to avoid any de- interlacing flicker. Introduction For optimal video quality the amount of processing performed on the video has to be minimized both in the Brightsign and in the display to which it is connected.
    [Show full text]
  • Simply Ravishing
    SIMPLY RAVISHING High-Definition Video Processing in a Single Cable Connection. DVD 480i Satellite Receiver Audio/Video Processing 480i Hub/Switcher HD Receiver 1080i 720p DVR 480i A/V Receiver Video Game Consoles 720p 480i VCR 480i SIMPLY RAVISHING Laser Disc 480i HD DVD Player 1080i PC Notebook XGA iScan VP20 DVDO iScan VP Series The iScan™ VP20 and the iScan™ VP30 are high-definition video processors that convert standard definition, high definition and PC signals to one output resolution which is carried over a single connection to your display. The iScan VP20 and VP30 have many output resolutions between 480p and 1080p, including those needed for most popular displays. In addition to processing video, both the iScan VP20 and VP30 are audio/video hubs that will automatically delay the audio so that the video and audio are maintained perfectly in sync. Video Reference Series Technologies Flat Panel Display Front Projector Rear Projection Display Direct View Display Video Reference Series technologies are Compatible with Plasma, LCD, LCoS, DLP and CRT-based display technologies cutting edge video processing technologies that are designed in-house at Anchor Bay Technologies. RPTV Plasma Display LCD/LCOS Display DLP • VRS Precision Deinterlacing™ – World Class SD Deinterlacing Projector — 480i/576i Source, Motion & Edge Adaptive Deinterlacer — Game Modes with very low latency 832 x 680 — Reliable 2:2 pull-down detection for 50Hz countries 1366 x 768 1024 x 768 1280 x 720 1920 x 1080 — Edge adaptive processing for smooth diagonal edges — Arbitrary cadence detection (any:any) LCD/LCOS Display — Detection of multiple source types within a frame (video titles over film) — Bad edit detection to minimize artifacts caused by sequence breaks in film content • VRS Precision Video Scaling II™ — 10-bit Scaling — Enhanced Sharpness Control VRS Precision Deinterlacer The Precision Deinterlacing Card improves the 480i/576i deinterlacing and elevates the iScan VP Series to “Best-in-Class” Performance.
    [Show full text]
  • Adaptive Deinterlacing of Video Sequences Using Motion Data
    University of Windsor Scholarship at UWindsor Electronic Theses and Dissertations Theses, Dissertations, and Major Papers 2009 Adaptive deinterlacing of video sequences using motion data Elham Shahinfard University of Windsor Follow this and additional works at: https://scholar.uwindsor.ca/etd Recommended Citation Shahinfard, Elham, "Adaptive deinterlacing of video sequences using motion data" (2009). Electronic Theses and Dissertations. 7990. https://scholar.uwindsor.ca/etd/7990 This online database contains the full-text of PhD dissertations and Masters’ theses of University of Windsor students from 1954 forward. These documents are made available for personal study and research purposes only, in accordance with the Canadian Copyright Act and the Creative Commons license—CC BY-NC-ND (Attribution, Non-Commercial, No Derivative Works). Under this license, works must always be attributed to the copyright holder (original author), cannot be used for any commercial purposes, and may not be altered. Any other use would require the permission of the copyright holder. Students may inquire about withdrawing their dissertation and/or thesis from this database. For additional inquiries, please contact the repository administrator via email (scholarship@uwindsor.ca) or by telephone at 519-253-3000ext. 3208. Adaptive Deinterlacing of Video Sequences Using Motion Data by Elham Shahinfard A Dissertation Submitted to the Faculty of Graduate Studies through the Department of Electrical and Computer Engineering in Partial Fulfillment of the Requirements
    [Show full text]