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A High-performance Low Cost Inverse Integer Transform Architecture for AVS Video Standard
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作者 李宇飞 王琴 付宇卓 《Journal of Shanghai Jiaotong university(Science)》 EI 2008年第1期116-121,共6页
A high-performance, low cost inverse integer transform architecture for advanced video standard (AVS) video coding standard was presented. An 8 × 8 inverse integer transform is required in AVS video system whic... A high-performance, low cost inverse integer transform architecture for advanced video standard (AVS) video coding standard was presented. An 8 × 8 inverse integer transform is required in AVS video system which is compute-intensive. A hardware transform is inevitable to compute the transform for the real-time application. Compared with the 4 × 4 transform for H.264/AVC, the 8 × 8 integer transform is much more complex and the coefficient in the inverse transform matrix Ts is not inerratic as that in H.264/AVC. Dividing the Ts into matrix Ss and Rs, the proposed architecture is implemented with the adders and the specific CSA-trees instead of multipliers, which are area and time consuming. The architecture obtains the data processing rate up to 8 pixels per-cycle at a low cost of area. Synthesized to TSMC 0.18 μm COMS process, the architecture attains the operating frequency of 300 MHz at cost of 34 252 gates with a 2-stage pipeline scheme. A reusable scheme is also introduced for the area optimization, which results in the operating frequency of 143 MHz at cost of only 19 758 gates. 展开更多
关键词 inverse integer transform high-definitioin television (HDTV) carry-save adder (CSA) tree pipeline advanced video standard avs
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Review of AVS Audio Coding Standard
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作者 ZHANG Tao ZHANG Caixia ZHAO Xin 《ZTE Communications》 2016年第2期56-62,共7页
Audio Video Coding Standard (AVS) is a second-generation source coding standard and the first standard for audio and video coding in China with independent intellectual property rights. Its performance has reached t... Audio Video Coding Standard (AVS) is a second-generation source coding standard and the first standard for audio and video coding in China with independent intellectual property rights. Its performance has reached the international standard. Its coding efficiency is 2 to 3 times greater than that of MPEG -2. This technical solution is more simple, and it can greatly save channel resource. After more than ten years' development, AVS has achieved great success. The latest version of the AVS audio coding standard is ongoing and mainly aims at the increasing demand for low bitrate and high quality audio services. The paper reviews the history and recent development of AVS audio coding standard in terms of basic features, key techniques and performance. Finally, the future development of AVS audio coding standard is discussed. 展开更多
关键词 Audio video Coding standard avs audio coding avs1 au-dio avs2 audio
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High throughput bandwidth optimized VLSI design for motion compensation in AVS HDTV decoder 被引量:1
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作者 Kai LUO Dong-xiao LI Ming ZHANG 《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》 SCIE EI CAS CSCD 2008年第6期822-832,共11页
In this paper we present a motion compensation (MC) design for the newest Audio Video coding Standard (AVS) of China. Because of compression-efficient techniques of variable block size (VBS) and sub-pixel interpolatio... In this paper we present a motion compensation (MC) design for the newest Audio Video coding Standard (AVS) of China. Because of compression-efficient techniques of variable block size (VBS) and sub-pixel interpolation, intensive pixel calculation and huge memory access are required. We propose a parallel serial filtering mixed luma interpolation data flow and a three-stage multiplication free chroma interpolation scheme. Compared to the conventional designs, the integrated architecture supports about 2.7 times filtering throughput. The proposed MC design utilizes Vertical Z processing order for reference data re-use and saves up to 30% memory bandwidth. The whole design requires 44.3k gates when synthesized at 108 MHz clock frequency using 0.18-μm CMOS technology and can support up to 1920×1088@30 fps AVS HDTV video decoding. 展开更多
关键词 Audio video coding standard avs Motion compensation (MC) INTERPOLATION VLSI Architecture
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A CODING SCHEME USING GLOBAL MOTION ESTIMATION FOR AVS P-FRAME
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作者 Gong Shengrong Guo Li Cui Zhiming 《Journal of Electronics(China)》 2007年第6期815-820,共6页
Block matching has been used for motion estimation and motion compensation in the Au- dio and Video Standard (AVS) for years. While having an acceptable performance in describing mo- tion between frames, it requires q... Block matching has been used for motion estimation and motion compensation in the Au- dio and Video Standard (AVS) for years. While having an acceptable performance in describing mo- tion between frames, it requires quite a few bits to represent the motion vectors. In certain circum- stances, the use of global motion estimation and compensation would perform equally well or even better than the block matching in terms of motion accuracy, while it results in the coding of global motion model parameters. In this letter, we modify an AVS coder by adding (1) six global motion model parameters to the frame header, and (2) mode selection among INTRA, SKIP, INTER-16×16, INTER-16×8, INTER-8×16, INTER-8×8, and Global Motion Compensation (GMC) modes by La- grange optimal rate-distortion criteria. Simulation results demonstrate that over 0.1dB improvement in PSNR is obtained compared to the AVS coder for an average coded P-frame with the same bit- rate. 展开更多
关键词 Coding scheme Motion compensation Motion estimation Audio and video standard avs
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STUDY ON SEMANTIC-BASED VIDEO WATERMARKING METHOD
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作者 Wang Xuhai Tong Ming Qin Kezhen 《Journal of Electronics(China)》 2010年第3期428-432,共5页
A new video watermarking method for the Audio Video coding Standard (AVS) is proposed. According to human visual masking properties, this method determines the region of interest for watermark embedding by analyzing v... A new video watermarking method for the Audio Video coding Standard (AVS) is proposed. According to human visual masking properties, this method determines the region of interest for watermark embedding by analyzing video semantics, and generates dynamic robust watermark according to video motion semantics, and embeds watermarks in the Intermediate Frequency (IF) Discrete Cosine Transform (DCT) coefficients of the luminance sub-block prediction residual in the region of interest. This method controls watermark embedding strength adaptively by video textures semantics. Ex- periments show that this method is robust not only to various conventional attacks, but also to re-frame, frame cropping, frame deletion and other video-specific attacks. 展开更多
关键词 Digital watermarking SEMANTICS CLONING Association rules Audio video coding standard (avs)
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Basic Considerations on AVS DRM Architecture 被引量:3
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作者 黄铁军 刘永亮 《Journal of Computer Science & Technology》 SCIE EI CSCD 2006年第3期366-369,共4页
Digital Rights Management (DRM) is an important infrastructure for the digital media age. It is a part of the AVS (Audio and Video coding Standard) of China. AVS Trusted Decoder (ATD) that plays back digital med... Digital Rights Management (DRM) is an important infrastructure for the digital media age. It is a part of the AVS (Audio and Video coding Standard) of China. AVS Trusted Decoder (ATD) that plays back digital media program according to rights conditions is the core of AVS DRM architecture. Adaptation layers axe responsible for translating or negotiating between ATD and peripheral systems. The Packaging Adaptation Layer (PAL), Licensing Adaptation Layer (LAL) and Rendering Adaptation Layer (RAL) will help ATD to gain the interoperability in various DRM environments. 展开更多
关键词 digital media digital rights management avs (Audio and video coding standard
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