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|  | | 为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。 | |
It can increase the processing speed by about 66%, work at 59 MHz, and meet the real-time needs of the video encoder.
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A robust adaptive video encoder based on human visual model
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A Robust Adaptive Video Encoder (RAVE) based on human visual model is proposed.
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It is shown that RAVE is a very efficient robust video encoder that provides improved visual quality for the receiver and consumes equal or less network resource.
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This letter proposes a rate control algorithm for H.264 video encoder, which is based on block activity and buffer state.
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| | An algorithm adopting smallrange motion estimation ASIC chips to realize largerange motion estimation in real time is proposed.The basic idea,system structure of hardware and design points of the proposed method are described in detail.Twolayer structure is adopted for the design.The subsampling rate at the top layer is 4 to 1.Six STI 3220 chips can be sued to realize P frame motion estimation.The range is-128~+124 for horizontal and -64~+56 for vertical.The study result can be directly used for the des... | | 提出了一个用分层块匹配搜索方法解决用少量小范围运动估计(ME)ASIC芯片实时实现大范围ME的算法。详细说明了所提出方法的基本思想、硬件系统结构、设计要点。在设计时采用了两层结构,顶层的亚抽样率为4∶1,只需用6片STI3220即可实现P帧运动估计范围为(-128~+124)水平,(-64~+56)垂直。其研究成果可直接用于MPEG-2MP@ML视频编码器及HDTV视频编码器的设计与实时实现。 | | 文摘来源 | | A new buffercontrol policy for DCTbased intrafield video coder is presented.It selects quantization parameter based on the number of three kinds of blocks in a picture and the ratequantization models(RQ model)for three kinds of blocks.It adapted to the scene changes through reencoding the picture and adjusting the RQ model.A simple and effective criterion is presented to classify the blocks,the classifying result based on it is close to the result gotten through quantizing the bits needed to code a b... | | 提出一种基于DCT的帧内视频编码器的缓存控制技术。它根据视频图像各种子块的比例及其相应的R-Q曲线确定量化因子,通过再编码,调整子块R-Q曲线的拟合参数使其自适应视频图像的场景变化。同时本文提出了一个简单有效的图像子块分类方法,分类结果基本上与根据编码子块所需比特数分类子块的结果相一致。此法用于缓存控制的额外计算量小,并能扩展应用于H.261、MPEG等视频编码标准中。模拟结果表明,此法在视频序列的场景发生变化时,再编码次数少,输出码率恒定。 | | 文摘来源 | | The statistical multiplexing features of ATM ensure the full utilization of cell resources and call for the ability of ATM based services to tolerate cell losses. In the field of video coding, layered coding can minimize the impact caused by cell losses and ensures normal communication under bad conditions.This paper puts forward a modified layered video coding,which enhances the compression rate of the video coder and its ability to tolerate cell losses. | | ATM的统计复用特性,使信道资源得到充分利用;同时又要求其上的业务必须具备抗信元丢失的能力。在视频编码领域,可以通过分层编码减少信元丢失所造成的影响,保证在恶劣条件下实现正常的通信。对一种通用的视频编码器进行了改进,提高了视频编码器的压缩比,并且改善了其抗信元丢失性能。 | | 文摘来源 | |   | | << 更多相关文摘 |
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