Video Processor, Video Upconversion & Signal Switching
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Shadow Telecinetelecine
ShadowShadow TelecineTelecine HighHigh performanceperformance SolidSolid StateState DigitalDigital FilmFilm ImagingImaging TechnologyTechnology Table of contents • Introduction • Simplicity • New Scanner Design • All Digital Platform • The Film Look • Graphical Control Panel • Film Handling • Main Features • Six Sector Color Processor • Cost of ownership • Summary SHADOWSHADOTelecine W Telecine Introduction The Film Transfer market is changing const- lantly. There are a host of new DTV formats required for the North American Market and a growing trend towards data scanning as opposed to video transfer for high end compositing work. Most content today will see some form of downstream compression, so quiet, stable images are still of paramount importance. With the demand growing there is a requirement for a reliable, cost effective solution to address these applications. The Shadow Telecine uses the signal proce- sing concept of the Spirit DataCine and leve- rages technology and feature of this flagship product. This is combined with a CCD scan- ner witch fulfils the requirements for both economical as well as picture fidelity. The The Film Transfer market is evolving rapidly. There are a result is a very high performance producthost allof new DTV formats required for the North American the features required for today’s digital Marketappli- and a growing trend towards data scanning as cation but at a greatly reduced cost. opposed to video transfer for high end compositing work. Most content today will see some form of downstream Unlike other Telecine solutions availablecompression, in so quiet, stable images are still of paramount importance. With the demand growing there is a this class, the Shadow Telecine is requirementnot a for a reliable, cost effective solution to re-manufactured older analog Telecine,address nor these applications. -
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. -
Comparison of HDTV Formats Using Objective Video Quality Measures
Multimed Tools Appl DOI 10.1007/s11042-009-0441-2 Comparison of HDTV formats using objective video quality measures Emil Dumic & Sonja Grgic & Mislav Grgic # Springer Science+Business Media, LLC 2010 Abstract In this paper we compare some of the objective quality measures with subjective, in several HDTV formats, to be able to grade the quality of the objective measures. Also, comparison of objective and subjective measures between progressive and interlaced video signal will be presented to determine which scanning emission format is better, even if it has different resolution format. Several objective quality measures will be tested, to examine the correlation with the subjective test, using various performance measures. Keywords Video quality . PSNR . VQM . SSIM . TSCES . HDTV. H.264/AVC . RMSE . Correlation 1 Introduction High-Definition Television (HDTV) acceptance in home environments directly depends on two key factors: the availability of adequate HDTV broadcasts to the consumer’s home and the availability of HDTV display devices at mass market costs [6]. Although the United States, Japan and Australia have been broadcasting HDTV for some years, real interest of the general public appeared recently with the severe reduction of HDTV home equipment price. Nowadays many broadcasters in Europe have started to offer HDTV broadcasts as part of Pay-TV bouquets (like BSkyB, Sky Italia, Premiere, Canal Digital ...). Other major public broadcasters in Europe have plans for offering HDTV channels in the near future. The announcement of Blu-Ray Disc and Game consoles with HDTV resolutions has also increased consumer demand for HDTV broadcasting. The availability of different HDTV image formats such as 720p/50, 1080i/25 and 1080p/50 places the question for many users which HDTV format should be used with which compression algorithm, together with the corresponding bit rate. -
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. -
A R R I T E C H N I C a L N O T E
A R R I T E C H N I C A L N O T E P - 1013 USA TV Ground Glass Markings Summary This note describes the frame outlines relevant to shooting film for television in the USA. The Important Frame Outlines to Know Both the markings on the ground glass and telecine calibration films are based on international standards that assure that an object framed in a given spot through the viewfinder will appear on that same spot in telecine. When shooting for television, one should be familiar with the following frame lines: Camera Aperture TV Transmission TV Safe Action TV Safe Title (not shown on most ground glasses) Please note that the frame outlines pictured above are for a Super 35 ground glass, and will be slightly different for other formats. Also note that TV Safe Title is usually not shown on most ground glasses. Full Aperture Corresponds to the full amount of negative film exposed. Caution: most ground glasses will permit viewing outside of this area, but anything outside of this area will not be recorded on film. This outline is usually found on ground glasses, but not in telecine. TV Transmission The full video image that is transmitted over the air. Sometimes also called “TV Scanned”. TV Safe Action Since most TV sets crop part of the TV Transmission image, a marking inside of TV Transmission has been defined. Objects that are within the TV Safe Action lines will be visible on most TV sets. This marking is sometimes referred to as “The Pumpkin”. -
Display's the Thing: the Real Stakes in the Conflict Over High Resolution Displays
Display's the Thing: The Real Stakes in the Conflict Over High Resolution Displays Jeffrey Hart and Michael Borrus (c) Copyright Hart and Borrus 1992 I. Display's the Thing: The Real Stakes In the Conflict Over High- Resolution Displays In Akira Kurasawa's film _Rashomon_, several witnesses to a murder tell the story of what they saw. Despite viewing the same event, the witnesses' stories are radically different, so much so that the event itself is ultimately called into question. So has it been with the debate over the next generation of high- resolution video technology. Some look and see a bigger and better television set (high-definition television or HDTV), but usually dismiss what they see as economically (though perhaps not politically) insignificant.1 Others look and see a significant component technology (high-resolution displays or HRD) beginning to pervade a wide variety of electronic systems. They recognize in displays a technological kinship to silicon chips -- an industry with potential strategic significance for commercial and military applications. But the conflict of perspectives should not, as it did in _Rashomon_, cast doubt on the event. The high-resolution display industry is a symbol of a major transformation underway in electronics: that is, the emergence of new component, machinery, and materials technologies driven by commercial, high-volume, integrated micro-systems applications and controlled increasingly by a few integrated producers located outside the United States. This paper argues that the industrial and geographic concentration of the sourcing, development, production, and integration of electronics technologies and systems in Asia portends new patterns of industrial constraint and opportunity, with significant economic and military implications. -
Spirit 4K® High-Performance Film Scanner with Bones and Datacine®
Product Data Sheet Spirit 4K® High-Performance Film Scanner with Bones and DataCine® Spirit 4K Film Scanner/Bones Combination Digital intermediate production – the motion picture workflow in which film is handled only once for scan- ning and then processed with a high-resolution digital clone that can be down-sampled to the appropriate out- put resolution – demands the highest resolution and the highest precision scanning. While 2K resolution is widely accepted for digital post production, there are situations when even a higher re- solution is required, such as for digital effects. As the cost of storage continues to fall and ultra-high resolu- tion display devices are introduced, 4K postproduction workflows are becoming viable and affordable. The combination of the Spirit 4K high-performance film scanner and Bones system is ahead of its time, offe- ring you the choice of 2K scanning in real time (up to 30 frames per second) and 4K scanning at up to 7.5 fps depending on the selected packing format and the receiving system’s capability. In addition, the internal spatial processor of the Spirit 4K system lets you scan in 4K and output in 2K. This oversampling mode eli- minates picture artifacts and captures the full dynamic range of film with 16-bit signal processing. And in either The Spirit 4K® from DFT Digital Film Technology is 2K or 4K scanning modes, the Spirit 4K scanner offers a high-performance, high-speed Film Scanner and unrivalled image detail, capturing that indefinable film DataCine® solution for Digital Intermediate, Commer- look to perfection. cial, Telecine, Restoration, and Archiving applications. -
BA(Prog)III Yr 14/04/2020 Displays Interlacing and Progressive Scan
BA(prog)III yr 14/04/2020 Displays • Colored phosphors on a cathode ray tube (CRT) screen glow red, green, or blue when they are energized by an electron beam. • The intensity of the beam varies as it moves across the screen, some colors glow brighter than others. • Finely tuned magnets around the picture tube aim the electrons onto the phosphor screen, while the intensity of the beamis varied according to the video signal. This is why you needed to keep speakers (which have strong magnets in them) away from a CRT screen. • A strong external magnetic field can skew the electron beam to one area of the screen and sometimes caused a permanent blotch that cannot be fixed by degaussing—an electronic process that readjusts the magnets that guide the electrons. • If a computer displays a still image or words onto a CRT for a long time without changing, the phosphors will permanently change, and the image or words can become visible, even when the CRT is powered down. Screen savers were invented to prevent this from happening. • Flat screen displays are all-digital, using either liquid crystal display (LCD) or plasma technologies, and have replaced CRTs for computer use. • Some professional video producers and studios prefer CRTs to flat screen displays, claiming colors are brighter and more accurately reproduced. • Full integration of digital video in cameras and on computers eliminates the analog television form of video, from both the multimedia production and the delivery platform. • If your video camera generates a digital output signal, you can record your video direct-to-disk, where it is ready for editing. -
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 [email protected],[email protected],[email protected] 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. -
Video Terminology Video Standards Progressive Vs
VIDEO TERMINOLOGY VIDEO STANDARDS 1. NTSC - 525 Scanlines/frame rate - 30fps North & Central America, Phillipines & Taiwan . NTSC J - Japan has a darker black 2. PAL - 625 scanlines 25 fps Europe, Scandinavia parts of Asia, Pacific & South Africa. PAL in Brazil is 30fps and PAL colours 3. SECAM France Russia Middle East and North Africa PROGRESSIVE VS INTERLACED VIDEO All computer monitors use a progressive scan - each scan line in sequence. Interlacing is only for CRT monitors. LCD monitors work totally differently - no need to worry about. Interlacing is for broadcast TV. Every other line displayed alternatively. FRAME RATES As we transition from analogue video to digitla video. Film is 24 fps, PAL video 25 fps. NTSC 30fps. Actually film and NTSC are slightly different but we don't need to worry about that for now. IMAGE SIZE All video is shot at 72 px/inch - DV NTSC - 720 x 480 (SD is 720 x 486) DV PAL - 720 x 576 (SD PAL is 720 x 576) HD comes in both progressive and interlaced. HD480i is usual broadcast TV 480p is 480 progressive. 720i is 720 interlaced 720p is progressive. 720 means 720 vertical lines 1080 is 1080 vertical lines. 1080i is most popular. 720p is 1280 x 720, HD 1080 is 1920x1080px. All HD formats are 16:9 aspect ratio. Traditional TV is 4:3 aspect ratio. HDV is 1440 x 1080. New format - is it the new HD version of DV? Cameras like the Sony and JVC make minor alterations to this format when shooting In summary HD 1080i = 1920 x 1080 HD 720p = 1280 x 720 Traditional = 720 x 480 (NTSC) 720 x 576 (PAL) VIDEO OUTPUTS Analog Composite, S-Video, Component in increasing quality. -
185 for Presentation July 8, 1971, NATIONAL CABLE TELEVISION
185 For presentation July 8, 1971, NATIONAL CABLE TELEVISION ASSOCIATION, Washington, D. C. TELECINE SYSTEMS FOR THE CATV ORIGINATION CENTER by Kenneth K. Kaylor Phil ips Broadcast Equipment Corp. Although 11 1 ive'' programming is considered a necessary part of the program origination services of a community-oriented CATV system, tele- cine facilities will hold the key to success or failure of such an operation from an economic standpoint. The word 11 tele-cine11 was developed during the early days of television broadcasting to define those facil i- ties devoted to the video reproduction of the various film media. Since the original commercial telecine television camera was an 11 iconoscope11 camera which had a very large sensitive surface (about 11 11 3 x 4 ), a film projector was focused onto the sensor by using a standard projection lens as shown in Fig. 1. This technique was quite simple and optical alignment was very easy. E1 im i nat i ng the 11 Shutte r Bar" effect In the case of motion picture film, the theatre projector had to be modified in order to prevent a "shutter bar" effect caused by the 186 difference in frame rates between television and motion picture stan dards. Standard sound motion picture film operates at 24 frames per second while the U. S. standard for television scanning is 30 frames per second. The intermittent mechanism had to be modified so that the 1ength of time between "pu 11 -downs" a 1 te rnates between 1/20 and 1/30 second. The average of these two fractions is 1/24 second, or the time demanded by the standard 24-frame-per-second motion picture projection rate. -
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