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![]() The primary changes for HEVC include the expansion of the pattern comparison and difference-coding areas from 16×16 pixel to sizes up to 64×64, improved variable-block-size segmentation, improved "intra" prediction within the same picture, improved motion vector prediction and motion region merging, improved motion compensation filtering, and an additional filtering step called sample-adaptive offset filtering. These redundant areas are then replaced with a short description instead of the original pixels. Both work by comparing different parts of a frame of video to find areas that are redundant, both within a single frame and between consecutive frames. In most ways, HEVC is an extension of the concepts in H.264/MPEG-4 AVC. Extensions for 3D video (3D-HEVC) were completed in early 2015, and extensions for screen content coding (SCC) were completed in early 2016 and published in early 2017, covering video containing rendered graphics, text, or animation as well as (or instead of) camera-captured video scenes. The second version, with multiview extensions (MV-HEVC), range extensions (RExt), and scalability extensions (SHVC), was completed and approved in 2014 and published in early 2015. The first version of the HEVC standard was ratified in January 2013 and published in June 2013. The ISO/IEC group refers to it as MPEG-H Part 2 and the ITU-T as H.265. Canon Printer High Sierra Software Application ThatPatent licenses can be obtained directly from each patent holder, or through patent licensing bodies, such as MPEG LA, HEVC Advance, and Velos Media.The combined licensing fees currently offered by all of the patent licensing bodies are higher than for AVC. The ISO/IEC and ITU require companies that belong to their organizations to offer their patents on reasonable and non-discriminatory licensing (RAND) terms. Implementing a device or software application that uses HEVC may require a license from HEVC patent holders. HEVC contains technologies covered by patents owned by the organizations that participated in the JCT-VC. Drive genius for mac reviewIn October 2004, various techniques for potential enhancement of the H.264/MPEG-4 AVC standard were surveyed. Previous work In 2004, the ITU-T Video Coding Experts Group (VCEG) began a major study of technology advances that could enable creation of a new video compression standard (or substantial compression-oriented enhancements of the H.264/MPEG-4 AVC standard). Other patent holders include Fujitsu, Apple, Canon, Columbia University, KAIST, Kwangwoon University, MIT, Sungkyunkwan University, Funai, Hikvision, KBS, KT and NEC. The majority of active patent contributions towards the development of the HEVC format came from five organizations: Samsung Electronics (4,249 patents), General Electric (1,127 patents), M&K Holdings (907 patents), NTT (878 patents), and JVC Kenwood (628 patents). Further contributions were given from more than a dozen organisations across the world. History The HEVC format was jointly developed by NHK and Mitsubishi Electric. Early evaluations were performed with modifications of the KTA reference software encoder developed by VCEG. An agreement of getting a bit rate reduction of 50% had been decided as the goal of the project by July 2007. The ISO/ IEC Moving Picture Experts Group (MPEG) started a similar project in 2007, tentatively named High-performance Video Coding. NGVC would be able to provide 25% bit rate reduction along with 50% reduction in complexity at the same perceived video quality as the High profile, or to provide greater bit rate reduction with somewhat higher complexity. The preliminary requirements for NGVC were the capability to have a bit rate reduction of 50% at the same subjective image quality compared with the H.264/MPEG-4 AVC High profile and computational complexity ranging from 1/2 to 3 times that of the High profile. At that meeting, the name High Efficiency Video Coding (HEVC) was adopted for the joint project. Evaluations showed that some proposals could reach the same visual quality as AVC at only half the bit rate in many of the test cases, at the cost of 2–10× increase in computational complexity, and some proposals achieved good subjective quality and bit rate results with lower computational complexity than the reference AVC High profile encodings. A total of 27 full proposals were submitted. Standardization A formal joint Call for Proposals on video compression technology was issued in January 2010 by VCEG and MPEG, and proposals were evaluated at the first meeting of the MPEG & VCEG Joint Collaborative Team on Video Coding (JCT-VC), which took place in April 2010. On the same day, MPEG announced that HEVC had been promoted to Final Draft International Standard (FDIS) status in the MPEG standardization process. On January 25, 2013, the ITU announced that HEVC had received first stage approval (consent) in the ITU-T Alternative Approval Process (AAP). Many changes in the coding tools and configuration of HEVC were made in later JCT-VC meetings. The first working draft specification of HEVC was produced at the third JCT-VC meeting in October 2010.
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