查询词典 quantization

The future study can be targeted at such aspects as the optimization of the model function, the selection and quantization of the factors, in order to explain the influence factors of interurban residential site differences better.

以更好的解释城市间地价水平的差异。

Inverse quantization and inverse discrete cosine transform are important operations in MPEG-2 decoding.

反量化和反离散余弦变换是MPEG-2中恢复帧内编码系数或差分系数的重要手段。

The circuit speed and performance are improved due to the new structure. MPEG2 video decoder includes Inverse Discrete Cosine Transformer, Motion Compensation, Variable Length Decode, Inverse Quantization and System Controller etc.

研究了解码器各个功能块VLSI实现的新方法，从电路结构方面进行探索，有效地减小了电路实现规模，而且在速度、性能等方面比文献报道有所提高。

The invention refers to a method to correct universal frequency of electric communication technique, its character: make signal index quantization on the complex number of cross product, to directly reflect the quantized numerical value of tangent value and the located quadrant of imaginary and real parts, use inverse tangent ROM table to discriminate the processed result, then make loop filter and phase accumulation on the discriminated result to obtain error-correcting angle, and use digital controlled oscillator to make table look-up and quadrant adjustment to obtain correcting factor; use the relationship of trigonometric function in each quadrant to compress inverse tangent look-up table ROM and digital controlled oscillator look-up table ROM.

一种涉及电通信技术的通用频率纠正的方法，其特征在于：它采用如下步骤：经过叉积的复数进行信号指数量化处理，通过该复数虚、实部信号的指数量化结果的差值及其极性直接反映虚、实部的正切值的量化数值以及所处象限，将处理后的结果通过反正切ROM表进行鉴频，鉴频后的结果经环路滤波和相位累加，得纠偏角度，通过数控振荡器针对纠偏角度进行查表和象限调整，得到纠正因子；通过个象限之间的三角函数关系来压缩反正切查表ROM和数控振荡器查表ROM的大小，本发明资源耗费小，效率高，可极大地节省内存资源。

What's more, we also study some key techniques and realization difficulties of image authentication in-depth, including referent block to help tamper localizing, sign bit adjustment for binary encoding, mean quantization improvement, diagonally extension to help tamper localizing, and discard isolated error point to tolerate incidental distortion. These techniques can be used for good reference to the development of image authentication technique.

此外，我们还对数字图像鉴别的一些关键技术和实现难点进行了深入研究，主要包括有：参考点辅助定位技术、二值编码中的符号处理技术、均值量化方法的改进技术、对角扩展和去除孤立点技术等，这些技术的研究都对数字图像鉴别技术的发展具有很好的借鉴意义。

This paper analyzes the theory of Rate-Distortion Optimization based on Lagrange Multiplier in details, and presents a kind of Embedded still image coding algorithm with scalar quantization.

本文详细分析了基于Lagrange乘数的率失真优化理论，提出了一种标量量化的嵌套式图像编码算法。

To solve this problem and make the theory of efficiency limit more complete, this project studies the efficiency limit when phase only and spatial quantization are simultaneously considered.

为求改善上述的实用性问题及绕射效率上限的理论完整性，本计画研究同时考虑纯相位及空间量化两个因素的绕射效率上限，其研究包含理论推演及电脑模拟。

To the best of our knowledge, for the efficiency limit of DOEs, published papers either consider only one single factor or consider both phase only and phase quantization together. This is relatively insufficient for the real DOEs, because most of them are phase-only and spatially quantized.

由所知的文献显示，对於绕射元件的绕射效率上限，过去的论文只单独考虑某一因素，或只同时考虑纯相位及相位量化两个因素，或所提出的绕射效率上限过於保守，这对於实际的绕射元件而言，是相当不够的，因它们多数是纯相位且已空间量化的。

Two different ways for LPC coefficients quantization are studied, which deals with reflection coefficients and Line Spectrum Pair parameters respectively.

研究了基于k参数和LSP参数的两种LPC参数的量化编码方法。

In this paper a method of continuous speech recognition based on hidden Markov models and vector quantization is discussed.

本文讨论基于隐马尔可夫模型和矢量量化的连续语音识别方法。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。