the human ear can not perceive the difference of speech quality between original speech and reconstructed speech while the phase quantization step size is little than π/ 7.

a new image blind watermarking algorithm based on adaptive quantization step in discrete wavelet transform ( dwt) is proposed, which can be used in copyright authentication.

提出了一种可用于版权认证的基于小波变换域自适应量化步长的图像盲水印算法。

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how can we decide the subband bit allocations and quantization step sizes so that the mean squared errors are minimum?

■优化的子带位率分配和量化器步长能使得编码的均方误差值最小。

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the algorithm is based on the optimum quantization step for each dwt coefficient according to psychovisual considerations which derived from methods in image compression.

本文的算法基于图像压缩算法中利用心理视觉给出的DWT系数的最优量化步骤。

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in quantization step quantization gene is an important parameter in video stream control. the enactment of this parameter is determined by buffer occupancy.

量化阶段量化因子是一个控制码率的重要参数，这个参数的设定主要是结合缓冲区的占用容量。

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and when the quantization step in a region is the same one, we discussed it when the embedded component is one region of the image or all.

而且在用统一的量化步长时，我们分别就嵌入部分分别为图像的某一区域和各个区域进行讨论。

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in new adjuster the range of quantization step has been limited well and coding error has been removed in single or some little frames.

在新的调节器中，限制了量化步长（Q）的范围，消除单个或者少数几帧产生的编码误差。

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quantization step of each coefficient is automatically computed in terms of the jnd to adaptively embed watermarking.

在量化过程中，根据人眼视觉模型可见临界误差来确定每个系数的量化步长，实现了水印的自适应嵌入。

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since the quantization step changes synchronously with the multiplication noises, this algorithm is robust to multiplication noises in principle.

由于量化步长与乘性噪声能同步变化，因此在原理上该算法对乘性噪声具有良好的鲁棒性。

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therefore, the quantitative parameters are chosen as the model parameters and the energy consumption model of video coding is established by quantization step.

因此，选用量化参数作为建模参数，建立了基于量化步长的视频编码能耗模型。

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using encryption technology to improve security, it means to adaptive select the quantization step in wavelet low frequency coefficient.

水印嵌入时利用加密技术来提高水印的安全性，依据小波低频系数自适应的选取量化步长。

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a new method for estimating the primary quantization step of jpeg double-compression

一种估计JPEG双重压缩原始量化步长的新方法

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current quantization step estimation algorithm is based on the histogram of dct coefficients.

现有量化步长估计算法是基于DCT系数的统计直方图进行。

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the result presents the permeability limit of flow unit, it is very important for the classification of flow unit in elastic reservoirs.

该研究结果对于碎屑岩储层流动单元划分具有重要意义，给出了流动单元划分时渗透率的界限。

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in dr wagner's laser, the organic layer that produces laser light is deposited onto pre-strained rubber.

瓦格纳的激光器是由沉淀在这种柔性材料中的激光器产生的。

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the useful measuring and testing technique as well as reference data are provided for the engineering utilization and theoretical analysis.

为工程应用、理论分析提供了具有实用价值的测试技术和参考依据。

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development and progress in measuring and testing technique about non-acoustic stealth of vessels

舰艇水下非声隐身试验与测试技术发展与展望

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the study of on-line measuring and testing technique for reciprocating friction& wear experimental machine

往复式摩擦磨损试验机在线检测技术的研究

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measuring and testing technique has actual significance in the course of research, development and industrialization of mems.

测试技术在微机电系统（MEMS）研发过程与产业化过程中具有重要的现实意义。

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railway rolling stock. method of testing roller bearing axle-box cases. thermal test on axle boxes test machine.

铁路车辆.滚动轴承箱箱体的试验方法.在轴箱试验机上进行热试验

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the total power of agricultural machinery and consumption of agricultural chemical fertilizer become more and more important to grain output, however the influence of the electricity consumed in rural and general purchasing price index of grain is slight.

农业机械总动力和化肥施用量对粮食总产量的影响不断上升，农业用电量和粮食收购价格指数对粮食总产量影响较小；

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