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picture signals
相关语句
  图像信号
     Adaptive Interpolation for 1/2 Subsampled Picture Signals
     1/2亚取样图像信号的自适应内插
短句来源
     The Technical Measures for Improving Picture Signals Transmission Quality in the Cable Television System
     提高电缆电视系统图像信号传输质量的技术措施
短句来源
     A 2D adaptive interpolator for 1/2 subsampled picture signals is proposed.
     本文提出一种适用于1/2亚取样图像信号的二维自适应内插器.
短句来源
     The syatem upgrade is convenient because video capture card used suppo rts both black & white and color picture signals.
     所采用的视频捕捉卡支持黑白图像信号和彩色图像信号 ,便于系统升级
短句来源
     In order to strengthen the tie between the teaching of theory and applied technology in electromagnetism and to better the relative teaching results, the paper explains with examples the collection and reappearing of television picture signals.
     本文结合电视图像信号的拾取、图像重现的过程 ,实例分析了电磁理论在电视技术中的应用 ,旨在加强电磁学教学与应用技术的联系 ,提高电磁学教学质量
短句来源
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  “picture signals”译为未确定词的双语例句
     On Bandwidth Compression of picture Signals
     图象信号的频带压缩
短句来源
     Narrow-Band Transmission of Underground Picture Signals in Coal Mines
     煤矿井下图象信号的窄带传输
短句来源
     As the different characteristics between the picture signal and the charac- ter signal in news facsimle signals,a special method for calculation and analysis of statistical characteristics of picture signals is needed.
     由于新闻传真信号中的图片型信号与文字型信号具有不同的特性,因此需要对图片型信号单独进行统计特性计算和分析,本文主要介绍了对图片的预测统计特性的计算方法;
短句来源
     PARALLEL TRANSMISSION OF VOICE AND SSTV PICTURE SIGNALS WITH 4KHz FREQUENCY BAND ON A PLC TERMINAL
     电力载波机传输慢扫描图象信号的研究
短句来源
     The proposed scheme can fully utilize the characteristics of picture signals within the neighborhood of each picture element, with adaptive nonlinear prediction and quantization for each individual picture element.
     这种编码方法,充分利用图象信号在每个象素邻近区域的具体变化特点,逐个象素进行自适应非线性预测及量化。
短句来源
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  相似匹配句对
     On Bandwidth Compression of picture Signals
     图象信号的频带压缩
短句来源
     The Picture World
     图世界
短句来源
     recombination of signals.
     信号重组。
短句来源
     On Wave Picture
     波的图像所反映出的一系列问题
短句来源
     The Calculation of Predictive Statistic Characteristics for News Picture Facsimile Signals
     新闻图片传真信号预测统计特性的计算
短句来源
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  picture signals
Exact adjustment of the prediction network of an adpative DPCM-coder for transmission of picture signals is outlined.
      
Exact models for predicting picture signals in adaptive DPCM-transmission
      
Video Amplifier A wideband amplifier used for passing picture signals.
      


This paper presents a high efficiency predictive coding scheme for multi-level images. In this coding scheme, continuous picture signals are considered as m-th order Markov process; the prediction value of each picture element is determined by a nonlinear function of its neighboring picture elements; and the nonlinear quantization is determined by the type of the difference of its neighboring picture elements. The proposed scheme can fully utilize the characteristics of picture signals...

This paper presents a high efficiency predictive coding scheme for multi-level images. In this coding scheme, continuous picture signals are considered as m-th order Markov process; the prediction value of each picture element is determined by a nonlinear function of its neighboring picture elements; and the nonlinear quantization is determined by the type of the difference of its neighboring picture elements. The proposed scheme can fully utilize the characteristics of picture signals within the neighborhood of each picture element, with adaptive nonlinear prediction and quantization for each individual picture element. Therefore, higher coding efficiency is obtained, especially in the region of contours and textures of images. Computer simulations show that the reconstructed images with transmission rate of entropy value 2 bits/pel hardly show any visible degradations by comparison with the original images. The proposed nonlinear predictive coding scheme has higher efficiency and simpler implementation by comparison with the existing predictive coding methods. It is suitable for high-speed real-time transmission of different kinds of images.

本文提出了多值制图象的高效率预测编码方法。它把各类连续变化的图象信号当作m阶Markov过程,每个象素的预测值取决于其邻近象素的非线性函数,而对预测误差的非线性量化,则取决于其邻近象素增量状态的类型。这种编码方法,充分利用图象信号在每个象素邻近区域的具体变化特点,逐个象素进行自适应非线性预测及量化。因此,提高了编码效能,特别是在图象的轮廓边沿或交织结构部位。计算机模拟表明,当传输信号的熵值为2bits/pel时,主观上难以发现图象损伤。本文的编码方法与其他高效率预测编码方法相比,不仅预测效率高,而且结构简单,适用于各种图象的高速实时传输。

In DFCM systems for digital picture signals, the nonlinearity in the decoders comesprincipally from the integer conversion of the prediction value. The integer conversion may be able toproduce considerable effects on the channel error response of DPCM systems. Because of the nonlinearily,the nonlinearity,the BIBOstability conditions of the decoder, derived under linear approximations, are not sufficient to ensure a complete decay of channel errors. In this paper, two improved methods of the integer conversion...

In DFCM systems for digital picture signals, the nonlinearity in the decoders comesprincipally from the integer conversion of the prediction value. The integer conversion may be able toproduce considerable effects on the channel error response of DPCM systems. Because of the nonlinearily,the nonlinearity,the BIBOstability conditions of the decoder, derived under linear approximations, are not sufficient to ensure a complete decay of channel errors. In this paper, two improved methods of the integer conversion of the prediction value are proposed. Compared to the conventional methods of the integer conversion, the new methods reduce the subjective effect of the channel error pattern in the received pictures.

在数字图象信号DPCM编码系统中,解码器的非线性主要来自预测值取整。预测值取整有可能对DPCM系统的信道误码响应产生重要影响。由于存在非线性,在线性近似下推导出的解码器的BIBO稳定条件并不能保证信道误码完全衰减。本文提出了两种改进的预测值取整方式。与通常的取整方式相比,新的取整方式可以减小接收图象中信道误码图案的主观影响。

As the different characteristics between the picture signal and the charac- ter signal in news facsimle signals,a special method for calculation and analysis of statistical characteristics of picture signals is needed.The main purpose of this paper is to introduce a calculation method for picture predictive statistic characteristics.The programming concept and implementation in computer is also involued.In addition,the analysis for statistical results is given.

由于新闻传真信号中的图片型信号与文字型信号具有不同的特性,因此需要对图片型信号单独进行统计特性计算和分析,本文主要介绍了对图片的预测统计特性的计算方法;从及使用计算机进行统计时,统计程序的设计思想及手段。最后对统计结果进行了分析。本文所介绍的工作为研制新型新闻传真机采用频带压缩技术提供了科学依据。

 
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