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Virtual Production (VP) technologies have continued to improve the flexibility of on-set filming and enhance the live concert experience. The core technology of VP relies on high-resolution, high-brightness LED panels to playback/render…

图像与视频处理 · 电气工程与系统科学 2024-11-04 Anil Kokaram , Vibhoothi Vibhoothi , Julien Zouein , François Pitié , Christopher Nash , James Bentley , Philip Coulam-Jones

Nowadays, real-time video communication over the internet through video conferencing applications has become an invaluable tool in everyone's professional and personal life. This trend underlines the need for video coding algorithms that…

多媒体 · 计算机科学 2015-10-05 Stamos Katsigiannis , Georgios Papaioannou , Dimitris Maroulis

We consider the image and video compression on resource limited platforms. An ultra low-cost image encoder, named Block Modulating Video Compression (BMVC) with an encoding complexity ${\cal O}(1)$ is proposed to be implemented on mobile…

图像与视频处理 · 电气工程与系统科学 2024-11-26 Siming Zheng , Yujia Xue , Waleed Tahir , Zhengjue Wang , Hao Zhang , Ziyi Meng , Gang Qu , Siwei Ma , Xin Yuan

We consider the ubiquitous technique of VByte compression, which represents each integer as a variable length sequence of bytes. The low 7 bits of each byte encode a portion of the integer, and the high bit of each byte is reserved as a…

信息检索 · 计算机科学 2017-01-17 Jeff Plaisance , Nathan Kurz , Daniel Lemire

This paper introduces a practical learned video codec. Conditional coding and quantization gain vectors are used to provide flexibility to a single encoder/decoder pair, which is able to compress video sequences at a variable bitrate. The…

神经与进化计算 · 计算机科学 2021-04-21 Théo Ladune , Pierrick Philippe , Wassim Hamidouche , Lu Zhang , Olivier Déforges

In this paper, we propose a wavelet-based video codec specifically designed for VR displays that enables real-time playback of high-resolution 360{\deg} videos. Our codec exploits the fact that only a fraction of the full 360{\deg} video…

图形学 · 计算机科学 2022-10-19 Colin Groth , Sascha Fricke , Susana Castillo , Marcus Magnor

Recent advances in video compression have seen significant coding performance improvements with the development of new standards and learning-based video codecs. However, most of these works focus on application scenarios that allow a…

多媒体 · 计算机科学 2025-02-18 Siyue Teng , Yuxuan Jiang , Ge Gao , Fan Zhang , Thomas Davis , Zoe Liu , David Bull

Overfitted neural video codecs offer a decoding complexity orders of magnitude smaller than their autoencoder counterparts. Yet, this low complexity comes at the cost of limited compression efficiency, in part due to their difficulty…

图像与视频处理 · 电气工程与系统科学 2025-03-27 Thomas Leguay , Théo Ladune , Pierrick Philippe , Olivier Deforges

To deliver ultra-high resolution 360-degree video (such as 8K, 12K, or even higher) across the internet, viewport-dependent streaming becomes necessary to save bandwidth. During viewport switches, clients and servers will instantly exchange…

多媒体 · 计算机科学 2023-04-13 Gang Shen , Mingyang Ma , Guangxin Xu

Vehicular communication has become a reality guided by various applications. Among those, high video quality delivery with low latency constraints required by real-time applications constitutes a very challenging task. By dint of its…

计算机视觉与模式识别 · 计算机科学 2023-11-07 Mohamed Aymen Labiod , Mohamed Gharbi , François-Xavier Coudoux , Patrick Corlay , Noureddine Doghmane

The proliferation of deep learning-based machine vision applications has given rise to a new type of compression, so called video coding for machine (VCM). VCM differs from traditional video coding in that it is optimized for machine vision…

计算机视觉与模式识别 · 计算机科学 2023-08-09 Yeongwoong Kim , Hyewon Jeong , Janghyun Yu , Younhee Kim , Jooyoung Lee , Se Yoon Jeong , Hui Yong Kim

Neural video codecs (NVCs), leveraging the power of end-to-end learning, have demonstrated remarkable coding efficiency improvements over traditional video codecs. Recent research has begun to pay attention to the quality structures in…

图像与视频处理 · 电气工程与系统科学 2025-09-05 Junqi Liao , Yaojun Wu , Chaoyi Lin , Zhipin Deng , Li Li , Dong Liu , Xiaoyan Sun

This paper presents a comprehensive analysis of motion vectors extracted from AV1-encoded video streams and their application in accelerating optical flow estimation. We demonstrate that motion vectors from AV1 video codec can serve as a…

图像与视频处理 · 电气工程与系统科学 2026-05-15 Julien Zouein , Vibhoothi Vibhoothi , Anil Kokaram

High-Efficiency Video Coding (HEVC) surpasses its predecessors in encoding efficiency by introducing new coding tools at the cost of an increased encoding time-complexity. The Coding Tree Unit (CTU) is the main building block used in HEVC.…

多媒体 · 计算机科学 2021-09-07 Ekrem Cetinkaya , Hadi Amirpour , Mohammad Ghanbari , Christian Timmerer

The latest High Efficiency Video Coding (HEVC) standard significantly improves coding efficiency over its previous video coding standards. The expense of such improvement is enormous computational complexity, from both encoding and decoding…

多媒体 · 计算机科学 2018-02-27 Ren Yang , Mai Xu , Zulin Wang , Yiping Duan , Xiaoming Tao

Recently, deep learning-based image compression has made signifcant progresses, and has achieved better ratedistortion (R-D) performance than the latest traditional method, H.266/VVC, in both subjective metric and the more challenging…

图像与视频处理 · 电气工程与系统科学 2022-06-23 Haisheng Fu , Feng Liang , Jie Liang , Binglin Li , Guohe Zhang , Jingning Han

We propose a very simple and efficient video compression framework that only focuses on modeling the conditional entropy between frames. Unlike prior learning-based approaches, we reduce complexity by not performing any form of explicit…

图像与视频处理 · 电气工程与系统科学 2020-08-24 Jerry Liu , Shenlong Wang , Wei-Chiu Ma , Meet Shah , Rui Hu , Pranaab Dhawan , Raquel Urtasun

Video coding is a mathematical optimization problem of rate and distortion essentially. To solve this complex optimization problem, two popular video coding frameworks have been developed: block-based hybrid video coding and end-to-end…

图像与视频处理 · 电气工程与系统科学 2022-07-13 Shuai Huo , Dong Liu , Li Li , Siwei Ma , Feng Wu , Wen Gao

This paper presents a method for generating coded video bit streams requiring less decoding energy than conventionally coded bit streams. To this end, we propose extending the standard rate-distortion optimization approach to also consider…

图像与视频处理 · 电气工程与系统科学 2022-03-03 Christian Herglotz , Andreas Heindel , André Kaup

For years, SIMD/vector units have enhanced the capabilities of modern CPUs in High-Performance Computing (HPC) and mobile technology. Typical commercially-available SIMD units process up to 8 double-precision elements with one instruction.…

分布式、并行与集群计算 · 计算机科学 2023-11-14 Pablo Vizcaino , Georgios Ieronymakis , Nikolaos Dimou , Vassilis Papaefstathiou , Jesus Labarta , Filippo Mantovani