High Dynamic Range Broadcasting
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Package 'Magick'
Package ‘magick’ August 18, 2021 Type Package Title Advanced Graphics and Image-Processing in R Version 2.7.3 Description Bindings to 'ImageMagick': the most comprehensive open-source image processing library available. Supports many common formats (png, jpeg, tiff, pdf, etc) and manipulations (rotate, scale, crop, trim, flip, blur, etc). All operations are vectorized via the Magick++ STL meaning they operate either on a single frame or a series of frames for working with layers, collages, or animation. In RStudio images are automatically previewed when printed to the console, resulting in an interactive editing environment. The latest version of the package includes a native graphics device for creating in-memory graphics or drawing onto images using pixel coordinates. License MIT + file LICENSE URL https://docs.ropensci.org/magick/ (website) https://github.com/ropensci/magick (devel) BugReports https://github.com/ropensci/magick/issues SystemRequirements ImageMagick++: ImageMagick-c++-devel (rpm) or libmagick++-dev (deb) VignetteBuilder knitr Imports Rcpp (>= 0.12.12), magrittr, curl LinkingTo Rcpp Suggests av (>= 0.3), spelling, jsonlite, methods, knitr, rmarkdown, rsvg, webp, pdftools, ggplot2, gapminder, IRdisplay, tesseract (>= 2.0), gifski Encoding UTF-8 RoxygenNote 7.1.1 Language en-US NeedsCompilation yes Author Jeroen Ooms [aut, cre] (<https://orcid.org/0000-0002-4035-0289>) Maintainer Jeroen Ooms <[email protected]> 1 2 analysis Repository CRAN Date/Publication 2021-08-18 10:10:02 UTC R topics documented: analysis . .2 animation . .3 as_EBImage . .6 attributes . .7 autoviewer . .7 coder_info . .8 color . .9 composite . 12 defines . 14 device . 15 edges . 17 editing . 18 effects . 22 fx .............................................. 23 geometry . 24 image_ggplot . -
Ultra HD Playout & Delivery
Ultra HD Playout & Delivery SOLUTION BRIEF The next major advancement in television has arrived: Ultra HD. By 2020 more than 40 million consumers around the world are projected to be watching close to 250 linear UHD channels, a figure that doesn’t include VOD (video-on-demand) or OTT (over-the-top) UHD services. A complete UHD playout and delivery solution from Harmonic will help you to meet that demand. 4K UHD delivers a screen resolution four times that of 1080p60. Not to be confused with the 4K digital cinema format, a professional production and cinema standard with a resolution of 4096 x 2160, UHD is a broadcast and OTT standard with a video resolution of 3840 x 2160 pixels at 24/30 fps and 8-bit color sampling. Second-generation UHD specifications will reach a frame rate of 50/60 fps at 10 bits. When combined with advanced technologies such as high dynamic range (HDR) and wide color gamut (WCG), the home viewing experience will be unlike anything previously available. The expected demand for UHD content will include all types of programming, from VOD movie channels to live global sporting events such as the World Cup and Olympics. UHD-native channel deployments are already on the rise, including the first linear UHD channel in North America, NASA TV UHD, launched in 2015 via a partnership between Harmonic and NASA’s Marshall Space Flight Center. The channel highlights incredible imagery from the U.S. space program using an end-to-end UHD playout, encoding and delivery solution from Harmonic. The Harmonic UHD solution incorporates the latest developments in IP networking and compression technology, including HEVC (High- Efficiency Video Coding) signal transport and HDR enhancement. -
Encoding H.264 Video for Streaming and Progressive Download
W4: KEY ENCODING SKILLS, TECHNOLOGIES TECHNIQUES STREAMING MEDIA EAST - 2019 Jan Ozer www.streaminglearningcenter.com [email protected]/ 276-235-8542 @janozer Agenda • Introduction • Lesson 5: How to build encoding • Lesson 1: Delivering to Computers, ladder with objective quality metrics Mobile, OTT, and Smart TVs • Lesson 6: Current status of CMAF • Lesson 2: Codec review • Lesson 7: Delivering with dynamic • Lesson 3: Delivering HEVC over and static packaging HLS • Lesson 4: Per-title encoding Lesson 1: Delivering to Computers, Mobile, OTT, and Smart TVs • Computers • Mobile • OTT • Smart TVs Choosing an ABR Format for Computers • Can be DASH or HLS • Factors • Off-the-shelf player vendor (JW Player, Bitmovin, THEOPlayer, etc.) • Encoding/transcoding vendor Choosing an ABR Format for iOS • Native support (playback in the browser) • HTTP Live Streaming • Playback via an app • Any, including DASH, Smooth, HDS or RTMP Dynamic Streaming iOS Media Support Native App Codecs H.264 (High, Level 4.2), HEVC Any (Main10, Level 5 high) ABR formats HLS Any DRM FairPlay Any Captions CEA-608/708, WebVTT, IMSC1 Any HDR HDR10, DolbyVision ? http://bit.ly/hls_spec_2017 iOS Encoding Ladders H.264 HEVC http://bit.ly/hls_spec_2017 HEVC Hardware Support - iOS 3 % bit.ly/mobile_HEVC http://bit.ly/glob_med_2019 Android: Codec and ABR Format Support Codecs ABR VP8 (2.3+) • Multiple codecs and ABR H.264 (3+) HLS (3+) technologies • Serious cautions about HLS • DASH now close to 97% • HEVC VP9 (4.4+) DASH 4.4+ Via MSE • Main Profile Level 3 – mobile HEVC (5+) -
OLED C8 PTA (77", 65", 55") OLED TV LG OLED TV AI Thinqtm
OLED C8 PTA (77", 65", 55") OLED TV LG OLED TV AI ThinQTM DISPLAY & PICTURE QUALITY SMART SHARE Screen Type OLED Network File Browser ● Screen size 55" (139cm), 65" (164cm), 77" (195cm) Miracast 12 ● Resolution 3840 x 2160 Smartphone Remote App 13 LG TV Plus Field Refresh Rate (Hz) - AUDIO FEATURES Response Time Less than 1ms Audio Output 40W 2 way 4 speaker HDR10 - High Dynamic Range 1 ● Speaker System (2 x High-Mid-range, 2 x Woofers) EAC3, HE-AAC, AAC, MP2, MP3, PCM, DTS, DTS-HD, DTS Express, WMA, apt-X, ADPCM, Dolby Vision ™ ● Audio Decoder LPCM, MPEG-1, Dolby Digital, Dolby Digital Plus, Dolby AC-4 HLG (Hybrid Log Gamma) 2 ● Virtual Surround Dolby Atmos Wide Colour Gamut ● Bluetooth Headphone Compartible ● (BT V4.2 +) Nano Cell Technology - Clear Voice Clear Voice III 6 (Standard, Cinema, Clear Voice III, Cricket(Sports), Backlight Type None Sound Modes Music, Game) Perfect Black ● Adaptive Sound Control ● Local Dimming ● (Pixel) Bluetooth Audio Playback ● ULTRA Luminance ● (Pro) Sound Sync Wireless (LG TV) 14 ● Screen Design Flat Audio Return Channel (ARC) 15 ● (HDMI 2) 10 (Vivid, Standard, Technicolor, APS, Cinema, Cricket, Game, Picture Modes CONNECTIONS HDR Effect, ISF Bright Room, ISF Dark Room) HDR Picture Modes 6 (Vivid, Standard, Technicolor, Cinema Home, Cinema, Game) HDMI 16 ● (4) Dolby Vision ™ Picture Modes 5 (Vivid, Standard, Cinema Home, Cinema, Game) USB 2.0 ● (3) Colour Bit Depth 10-bit RF Antenna Input ● (1) HDR Effect ● Component/Composite Input ● (Phone Jack Type - Shared Audio) HDR Game Mode ● Headphone (3.5mm) -
Developed by the Consumer Technology Association Video Division
4K Ultra High-Definition TV A display system may be referred to as 4K Ultra High-Definition if it meets the following minimum performance attributes: Display Resolution – Has at least 8 million active pixels, with at least 3840 horizontally and at least 2160 vertically. Physical pixels shall be individually addressable such that the horizontal and vertical resolution above can be demonstrated over the full range of colors provided by the display. Aspect Ratio – The width to height ratio of the display’s native resolution is 16:9 or wider. Upconversion – The display is capable of upscaling HD video and displaying it at 4K Ultra High- Definition display resolution. Digital Input – Has one or more HDMI inputs supporting at least 3840x2160 native content resolution at 24p, 30p, & 60p frames per second. At least one of the 3840x2160 HDMI inputs shall support HDCP v2.2 or equivalent content protection. Colorimetry – Processes 2160p video inputs encoded according to ITU-R BT.709 color space, and may support wider colorimetry standards. Bit Depth – Has a minimum bit depth of 8 bits. Connected 4K Ultra High-Definition TV A display system may be referred to as Connected 4K Ultra High-Definition (or Connected 4K UHD) if it meets the following minimum performance attributes: 4K Ultra High-Definition Capability – Meets all of the requirements of CTA’s 4K Ultra High-Definition Display Characteristics V3. Video Codec – Decodes IP-delivered video of 3840x2160 resolution that has been compressed using HEVC* and may decode video from other standard encoders. Audio Codec – Receives and reproduces, and/or outputs multichannel audio. -
Growing Importance of Color in a World of Displays and Data Color In
Importance of Color in Displays Growing Importance of Color in a World of Displays and Data Color in displays Standards for color space and their importance The television and monitor display industry, through numerous standards bodies, including the International Telecommunication Union (ITU) and International Commission on Illumination (CIE), collaborate to create standards for interoperability, delivery, and image quality, providing a basis for delivering value to the consumers and businesses that purchase and rely on these displays. In addition to industry-wide standards, proprietary standards developed by commercial entities, such as Adobe RGB and Dolby Vision, drive innovation and customer value. The benefits of standards for color are tangible. They provide the means for: Color information to be device- and application-independent Maintaining color fidelity through the creation, editing, mastering, and broadcasting process Reproducing color accurately and consistently across diverse display devices By defining a uniform color space, encoding system, and broadcast specification relative to an ideal “reference display,” content can be created almost anywhere and transmitted to virtually any device. In order for that content to be shown correctly and in full detail, the display rendering it should be able to reproduce the same color space. While down-conversion to lesser color spaces is possible, the resulting image quality will be reduced. It benefits a consumer, whenever possible and within reasonable spending, to purchase a display with the closest conformance to standards so that they are assured of the best experience in terms of interoperability and image quality. The Color IQ optic that is referenced as Annex 3 of Exemption 39(b) allows displays to meet these standards, and does so at a lower system cost and higher energy efficiency than alternative solutions. -
JPEG-HDR: a Backwards-Compatible, High Dynamic Range Extension to JPEG
JPEG-HDR: A Backwards-Compatible, High Dynamic Range Extension to JPEG Greg Ward Maryann Simmons BrightSide Technologies Walt Disney Feature Animation Abstract What we really need for HDR digital imaging is a compact The transition from traditional 24-bit RGB to high dynamic range representation that looks and displays like an output-referred (HDR) images is hindered by excessively large file formats with JPEG, but holds the extra information needed to enable it as a no backwards compatibility. In this paper, we demonstrate a scene-referred standard. The next generation of HDR cameras simple approach to HDR encoding that parallels the evolution of will then be able to write to this format without fear that the color television from its grayscale beginnings. A tone-mapped software on the receiving end won’t know what to do with it. version of each HDR original is accompanied by restorative Conventional image manipulation and display software will see information carried in a subband of a standard output-referred only the tone-mapped version of the image, gaining some benefit image. This subband contains a compressed ratio image, which from the HDR capture due to its better exposure. HDR-enabled when multiplied by the tone-mapped foreground, recovers the software will have full access to the original dynamic range HDR original. The tone-mapped image data is also compressed, recorded by the camera, permitting large exposure shifts and and the composite is delivered in a standard JPEG wrapper. To contrast manipulation during image editing in an extended color naïve software, the image looks like any other, and displays as a gamut. -
The Rehabilitation of Gamma
The rehabilitation of gamma Charles Poynton poynton @ poynton.com www.poynton.com Abstract Gamma characterizes the reproduction of tone scale in an imaging system. Gamma summarizes, in a single numerical parameter, the nonlinear relationship between code value – in an 8-bit system, from 0 through 255 – and luminance. Nearly all image coding systems are nonlinear, and so involve values of gamma different from unity. Owing to poor understanding of tone scale reproduction, and to misconceptions about nonlinear coding, gamma has acquired a terrible reputation in computer graphics and image processing. In addition, the world-wide web suffers from poor reproduction of grayscale and color images, due to poor handling of nonlinear image coding. This paper aims to make gamma respectable again. Gamma’s bad reputation The left-hand column in this table summarizes the allegations that have led to gamma’s bad reputation. But the reputation is ill-founded – these allegations are false! In the right column, I outline the facts: Misconception Fact A CRT’s phosphor has a nonlinear The electron gun of a CRT is responsible for its nonlinearity, not the phosphor. response to beam current. The nonlinearity of a CRT monitor The nonlinearity of a CRT is very nearly the inverse of the lightness sensitivity is a defect that needs to be of human vision. The nonlinearity causes a CRT’s response to be roughly corrected. perceptually uniform. Far from being a defect, this feature is highly desirable. The main purpose of gamma The main purpose of gamma correction in video, desktop graphics, prepress, JPEG, correction is to compensate for the and MPEG is to code luminance or tristimulus values (proportional to intensity) into nonlinearity of the CRT. -
AN9717: Ycbcr to RGB Considerations (Multimedia)
YCbCr to RGB Considerations TM Application Note March 1997 AN9717 Author: Keith Jack Introduction Converting 4:2:2 to 4:4:4 YCbCr Many video ICs now generate 4:2:2 YCbCr video data. The Prior to converting YCbCr data to R´G´B´ data, the 4:2:2 YCbCr color space was developed as part of ITU-R BT.601 YCbCr data must be converted to 4:4:4 YCbCr data. For the (formerly CCIR 601) during the development of a world-wide YCbCr to RGB conversion process, each Y sample must digital component video standard. have a corresponding Cb and Cr sample. Some of these video ICs also generate digital RGB video Figure 1 illustrates the positioning of YCbCr samples for the data, using lookup tables to assist with the YCbCr to RGB 4:4:4 format. Each sample has a Y, a Cb, and a Cr value. conversion. By understanding the YCbCr to RGB conversion Each sample is typically 8 bits (consumer applications) or 10 process, the lookup tables can be eliminated, resulting in a bits (professional editing applications) per component. substantial cost savings. Figure 2 illustrates the positioning of YCbCr samples for the This application note covers some of the considerations for 4:2:2 format. For every two horizontal Y samples, there is converting the YCbCr data to RGB data without the use of one Cb and Cr sample. Each sample is typically 8 bits (con- lookup tables. The process basically consists of three steps: sumer applications) or 10 bits (professional editing applica- tions) per component. -
High Dynamic Range Image and Video Compression - Fidelity Matching Human Visual Performance
HIGH DYNAMIC RANGE IMAGE AND VIDEO COMPRESSION - FIDELITY MATCHING HUMAN VISUAL PERFORMANCE Rafał Mantiuk, Grzegorz Krawczyk, Karol Myszkowski, Hans-Peter Seidel MPI Informatik, Saarbruck¨ en, Germany ABSTRACT of digital content between different devices, video and image formats need to be extended to encode higher dynamic range Vast majority of digital images and video material stored to- and wider color gamut. day can capture only a fraction of visual information visible High dynamic range (HDR) image and video formats en- to the human eye and does not offer sufficient quality to fully code the full visible range of luminance and color gamut, thus exploit capabilities of new display devices. High dynamic offering ultimate fidelity, limited only by the capabilities of range (HDR) image and video formats encode the full visi- the human eye and not by any existing technology. In this pa- ble range of luminance and color gamut, thus offering ulti- per we outline the major benefits of HDR representation and mate fidelity, limited only by the capabilities of the human eye show how it differs from traditional encodings. In Section 3 and not by any existing technology. In this paper we demon- we demonstrate how existing image and video compression strate how existing image and video compression standards standards can be extended to encode HDR content efficiently. can be extended to encode HDR content efficiently. This is This is achieved by a custom color space for encoding HDR achieved by a custom color space for encoding HDR pixel pixel values that is derived from the visual performance data. values that is derived from the visual performance data. -
Senior Tech Tuesday 11 Iphone Camera App Tour
More Info: Links.SeniorTechClub.com/Tuesdays Welcome to Senior Tech Tuesday Live: 1/19/2021 Photography Series Tour of the Camera App Don Frederiksen Our Tuesday Focus ➢A Tour of the Camera App - Getting Beyond Point & Shoot ➢Selfies ➢Flash ➢Zoom ➢HDR is Good ➢What is a Live Photo ➢Focus & Exposure ➢Filters ➢Better iPhone Photography Tip ➢What’s Next www.SeniorTechClub.com Zoom Setup Zoom Speaker View Computer iPad or laptop Laptop www.SeniorTechClub.com Our Learning Tools ◦ Zoom Video Platform ◦ Slides – Downloadable from class page ◦ Demonstrations ◦ Your Questions ◦ “Hey Don” or Chat ◦ Email: [email protected] ◦ Online Class Page at: Links.SeniorTechClub.com/STT11 ◦ Tuesdays Page for Future Topics Links.SeniorTechClub.com/tuesdays www.SeniorTechClub.com Our Class Page Find our class page at: ◦ Links.SeniorTechClub.com/STT11 ◦ Bottom of the Tuesday page Purpose of the Class Page ◦ Relevant Information ◦ Fill in gaps from the online session ◦ Participate w/o being online www.SeniorTechClub.com Tour of our Class Page Slide Deck Video Archive Links & Resources Recipes & Nuggets www.SeniorTechClub.com A Tour of the Camera App Poll www.SeniorTechClub.com A Tour of the Camera App - Classic www.SeniorTechClub.com A Tour of the Camera App - New www.SeniorTechClub.com Switch Camera - Selfie Reminder: Long Press Shortcut Zoom Two kinds of zoom on iPhones Optical Zoom via a Lens Zoom Digital Zoom via a Pinch Better to zoom with your feet then digital Zoom Digital Zoom – Pinch Screen in or out Optical ◦ If your iPhone has more than one lens, tap: ◦ .5x or 1x or 2x (varies by model) Flash Focus & Exposure HDR Photos High Dynamic Range iPhone takes multiple photos to balance shadows and highlights. -
JPEG Compatible Coding of High Dynamic Range Imagery Using Tone Mapping Operators
JPEG Compatible Coding of High Dynamic Range Imagery using Tone Mapping Operators Min Chen1, Guoping Qiu1, Zhibo Chen2 and Charles Wang2 1School of Computer Science, The University of Nottingham, UK 2Thomson Broadband R&D (Beijing) Co., Ltd, China Abstract. In this paper, we introduce a new method for HDR imaging remain. For example, to display HDR compressing high dynamic range (HDR) imageries. Our images in conventional CRT or print HDR image on method exploits the fact that tone mapping is a necessary paper, the dynamic range of the image has to be operation for displaying HDR images on low dynamic compressed or the HDR image has to be tone mapped. range (LDR) reproduction media and seamlessly Even though there has been several tone mapping integrates tone mapping with a well-established image methods in the literature [3 - 12], non so far can compression standard to produce a HDR image universally produce satisfactorily results. Another huge compression technique that is backward compatible with challenge is efficient storage of HDR image. Compared established standards. We present a method to handle with conventional 24-bit/pixel images, HDR image is 96 color information so that HDR image can be gracefully bits/pixel and data is stored as 32-bit floating-point reconstructed from the tone mapped LDR image and numbers instead of 8-bit integer numbers. The data rate extra information stored with it. We present experimental using lossless coding, e.g, in OpenEXR [15], will be too results to demonstrate that the proposed technique works high especially when it comes to HDR video.