查询词典 density of distribution

Statistic trains the histogram of example every to distributing, use at describing the probability distribution of person face and feature of impersonal face exterior, every histogram states coefficient of a group of small wave and they are in person face associated probability density of the position.

统计每个练习样本的直方图分布，用于描述人脸和非人脸外观特征的概率分布，每个直方图表示一组小波系数和它们在人脸中位置的联合概率密度。

This paper studies position and function of the real estate agency, measurement instrument of service quality of real estate agency and the model of distribution density.

论文研究了房地产中介代理的地位和作用，房地产中介代理服务质量的测量方法以及房地产中介代理机构分布密度的模型。

In this paper, the theory, algorithm, and experiment of automatic object detection and tracking are studied in depth. It is firstly pointed out that the essential of Mean Shift method is a special Newton-Gaussian method. A new method named Fast Mean Shift is established to stretch the conservative step of Mean Shift method. The convergence and validity of this new method are proved in theory. And it is also proved that the convergence speed of Fast Mean Shift is faster than that of Mean Shift. The contrast experiments of searching the maximum possibility density of random of data sets in plane and 3D space are done. The results show that this new method can reduce the iterations greatly. A new object tracking method based on Fast Mean Shift is built to improve the object tracking performance, which is shown in the face tracking experiment with the tennis sequence provided by the Ohio State University, and the car tracking experiment with the car sequence provided by Kalsruhe University. The face trcking experiment with highly noised images show that the object tracking method based on Fast Mean Shift has strong anti-jamming ability. A new fast color object detection technology based on characteristic color is established, which use characteristic color distribution to compute the characteristic color vector of any area in an image quickly. With the high performance search method, the fast object detection is achieved. At last, using object tracker based on Fast Mean Shift and color object detector based on characteristic color with the Kalman filter, PID controller, searial communication and other technologies, automatic object detection and tracking system with control system is built. The availability and anti-jamming ability of this system are verified by some object detection and tracking tests in different scenes.

本文对目标自动识别与跟踪进行了理论、计算、试验三方面的深入研究，主要包括：首次指出了目标跟踪技术中常用的均值迁移方法的本质为一种特殊的高斯-牛顿方法，改进了均值迁移方法步长取值保守的弱点，建立了快速均值迁移方法，证明了该方法的收敛性、有效性以及收敛速度优于均值迁移方法；进行了平面和3维随机分布数据集的最大概率密度搜索对比试验，试验结果表明，快速均值迁移方法大大减少了迭代次数；建立了基于快速均值迁移的目标跟踪方法，利用俄亥俄州立大学提供的乒乓球序列图像和卡斯鲁厄大学的汽车序列图像，对人脸和汽车目标跟踪性能分别进行了对比试验，并进行了高噪声人脸图像目标跟踪试验，结果表明，基于快速均值迁移的目标跟踪方法有效提高了目标跟踪性能，具有很强的抗干扰能力；建立了一种新型彩色目标自动识别方法，采用特征色彩分布函数实现了对任意图像区域特征色彩矢量的快速计算，建立了高效的搜索方法，实现了彩色目标的快速识别；将基于快速均值迁移方法的目标跟踪方法、基于特征色彩的目标识别方法与卡尔曼滤波、PID控制、串行通讯等技术结合，建立了带有控制系统的快速目标自动识别与跟踪系统，并在不同场景下进行了目标自动识别与跟踪试验，验证了快速目标自动识别与跟踪系统的有效性和抗干扰能力。

Through simulation, the size of the filter template affecting on filtering imaging is investigated, the filtering effects of second mean filtering method and vector filtering method at the same size of filter template is comparised, the curve distribution of power spectral density of second mean filtering method and vector filtering method is analyzed.

仿真实验研究了滤波模板的大小对滤波效果的影响，比较了在同样模板的选取下向量滤波方法与二次均值滤波法的滤波效果，分析了向量滤波方法与二次均值滤波法的功率谱密度分布。

The effect of molecular weight distribution of the pitch on the formation of the foam was studied qualitatively. The variation of microscopic morphology, crystallite size, the interlayer spacing of microcrystal, and the density of the carbon foam carbonized from 800 to 1400℃ were also investigated.

定性考察了沥青分子量分布对沥青泡沫形成的影响，以及其沥青泡沫在空气中，在800℃~1400℃炭化温度范围炭化得到泡沫炭产品的光学微观形态、微晶及密度等的变化情况。

We extracted data about environmental factors of 90 Chinese Chiroptera species at known distribution points by using GIS,and conducted PCA and stepwise regression analyses to evaluate impacts of these environmental factors on geographical distribution and species density of Chinese Chiroptera.

利用地理信息系统提取了中国翼手目90个物种已知地理分布点的环境因子数据，并利用主成分分析和逐步回归分析研究了这些环境因子对中国翼手目动物地理分布和种数密度分布的影响程度。

The distribution density of oil cells, the distribution types of oil cells and mucilage cells and their localization in the mesophyll are of some taxonomic value at the specific level in the Lauraceae.

油细胞的分布密度、油细胞与粘液细胞是否共存、是否单独存在或无，以及其具体分布部位等方面在种间存在一定的差异，这对于属以下等级的区分具有一定意义。

We found, GLP-1-IR cells in various guts of rat, pig and foetus of human with distribution scatteredly among the basal portion of intestinal glands. The cell shape corresponded with open type cells, i.e. L-cells. The density of GLP-1-IR cells was different in races, but the distribution regularity of GLP-1-IR cells was same. It showed that a continuous increase from the proximal to the distal portion of small and bowel.

结果发现：在各段肠管都可见到GLP-1-IR细胞；GLP-1-IR细胞散在于肠腺的柱状上皮细胞之间，多位于肠腺的基底部，呈开放型内分泌细胞形态，即L细胞；不同种属问GLP-1-IR细胞密度不同，但分布规律相同，即自小肠和大肠的近端向远端逐渐增大。

The nozzle of the gasifier is simplified. The cold-flow field in the gasifier chamber is studied. The research shows that the chamber has recirculation along the whole length. The particles in the chamber perform a very good flowing characteristics even for the large particles of dp=150μm, and no abrupt change is observed. This is due to the operational pressure is high and the density of the gas is large there. The maximal reflux velocity of both phases, the reflux intensity, the concentrational distribution of particles, and the static pressure loss in the chamber are all related to following factors: the load of gasifier, the concentration of coal-water slurry, the diameter of the coal particle, the distribution ratio of oxygen in the two channels of the nozzle, and the angle of jet in nozzle.

本文对水煤浆气化炉喷嘴进行了简化处理，在此基础上，对气化室内的冷态流动过程进行了研究，发现：整个气化室都处于流动的回流区长度范围以内；水煤浆气化炉中，由于操作压力很高，气相密度很大，所以即使对于dp=150μm的较大煤颗粒，其对流体的跟随特性也很好，没有发生流动特性突跃的现象；两相的最大回流速度、回流强度，颗粒相的浓度分布，以及气化室内的静压力损失等，均与气化炉的负荷、水煤浆浓度、煤粒直径、O2在喷嘴两个流道中的分配比例、以及喷嘴的射流角等参数有关。

The key technologies of Grid Method including grid divided in basin, impact radius of rainfall and number of reference rainfall stations have been discussed with example. The parameters of Grid Method have been selected through trial and error. Using simple random sampling to simulate the failure to collect rainfall, the relation between surface rainfall calculation error and station density, station distribution, uneven spatial distribution of rainfall has been sought.

论文探讨了流域网格剖分、降雨影响半径、搜索半径范围和参证站数量等关键技术，研究了网格法参数的优选，并采用简单随机抽样模拟降雨缺测情况，给出了面雨量计算误差与流域站网密度、均匀度、降雨分布不均匀性指标的关系。

In this paper, the requirement analysis, design and implementation of the system are introduced in detail.

此论文详细介绍了系统的需求分析，系统设计和具体实现。

In the context of economic globalization is increasingly deepening, China's economy can not be spared.

在经济全球化日益加深的背景下，中国经济不可能做到独善其身。