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Primary transforms for cross-component level reconstruction

專利號(hào)
US11930177B2
公開日期
2024-03-12
申請(qǐng)人
Tencent America LLC(US CA Palo Alto)
發(fā)明人
Madhu Peringassery Krishnan; Xin Zhao; Shan Liu
IPC分類
H04N19/12; H04N19/176; H04N19/18; H04N19/186; H04N19/46
技術(shù)領(lǐng)域
transform,coding,video,prediction,block,coded,in,may,picture,be
地域: CA CA Palo Alto

摘要

This disclosure relates generally to video coding and particularly to cross component level reconstruction. For example, a method is disclosed for processing video data which may include extracting a first transform block of a first color component and a second transform block of a second color component from a bitstream of a video block; determining that transform coefficients in the first transform block are all zero; determining that a CCLR is applied to the first transform block; refining one or more of the transform coefficients in the first transform block, to obtain a refined first transform block; determining a target transform kernel for the refined first transform block; performing a reverse transform on the refined first transform block based on the target transform kernel to obtain a target block; and reconstructing the first color component of the video block based on at least the target block.

說(shuō)明書

Computer system (2800) may also include certain human interface output devices. Such human interface output devices may be stimulating the senses of one or more human users through, for example, tactile output, sound, light, and smell/taste. Such human interface output devices may include tactile output devices (for example tactile feedback by the touch-screen (2810), data-glove (not shown), or joystick (2805), but there can also be tactile feedback devices that do not serve as input devices), audio output devices (such as: speakers (2809), headphones (not depicted)), visual output devices (such as screens (2810) to include CRT screens, LCD screens, plasma screens, OLED screens, each with or without touch-screen input capability, each with or without tactile feedback capability—some of which may be capable to output two dimensional visual output or more than three dimensional output through means such as stereographic output; virtual-reality glasses (not depicted), holographic displays and smoke tanks (not depicted)), and printers (not depicted).

Computer system (2800) can also include human accessible storage devices and their associated media such as optical media including CD/DVD ROM/RW (2820) with CD/DVD or the like media (2821), thumb-drive (2822), removable hard drive or solid state drive (2823), legacy magnetic media such as tape and floppy disc (not depicted), specialized ROM/ASIC/PLD based devices such as security dongles (not depicted), and the like.

Those skilled in the art should also understand that term “computer readable media” as used in connection with the presently disclosed subject matter does not encompass transmission media, carrier waves, or other transitory signals.

權(quán)利要求

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