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There are three main methods in face localization: localization according to face outline, localization according to complexion and localization according to templates constructed by some standard sample images. As to feature extraction, it can be divided into two parts because face features can be divided into geometrical features and algebraic features. While extracting geometrical features, the features of eyes, nose, mouth, eyebrows can be gained by some image processes: binary, sharpen, smooth, projection, calculating gradient and so on. In order to extract algebraic features, we can do some mathematical transformation for the digital images such as singular value decomposition, K-L transformation.

在人脸检测部分，目前存在的方法有利用人脸的几何轮廓进行检测、利用人脸的肤色信息进行检测、构造标准人脸模板进行匹配检测等等；在人脸特征提取部分，可以用一些图像处理的方法如投影、二值化、求梯度图像等提取人脸中各特征器官如眼睛、鼻子、嘴巴等的几何特征，另外也可以借助于数学变换，求取人脸图像的一些代数特征，如对图像进行奇异值分解，以奇异值代表图象的特征，或对图像进行K-L变换，以图像在构造的特征空间上的投影系数作为图像的特征等；在识别部分，可以通过距离度量或相似度来判断输入图像与样本图像的匹配程度，还可以通过神经网络方法进行人脸的识别。

Although there is no such theory, with a small screen, but you can also its projection on the wall.

尽管没有这个理论，用很小的屏幕，但是你也可以把它投射在墙上。

A 3rd-Runge-Kutta-5th-WENO scheme is used in this study to get solution of the Level Set advection equation. A Projection method is used to solve the N-S equation, and different discretization schemes are presented. A TDMA algorithm is used to solve the energy equation. With the use of these methods, a numerical simulation of vapor-liquid two-phase flows during condensation with large density ratio has been successfully realized.

本文应用三阶Runge-Kutta－五阶WENO组合格式求解Level Set输运方程，应用投影法求解气－液两相流流场N-S方程，给出了不同投影法的具体格式，应用TDMA算法求解气－液两相流场的能量方程，成功实现了对大密度比气－液两相流冷凝流动问题的数值模拟。

For the research interest,the paper has studied the influence of such factors on the smoke movement ,as the height of spandrel,the width of horizontal projection,the width of heat passage,the breaking of external wall,as well as the wind speed,etc.

针对呼吸式幕墙存在的消防问题，利用计算流体力学方法对其火灾特性进行了数值模拟，研究了窗槛墙高度、防火挑檐宽度、热通道宽度、外幕墙破碎和室外风速等因素对幕墙通道内烟气流动特性的影响，得出了各因素对烟气蔓延速度、烟羽流温度、幕墙附近温度的影响规律。

For the research interest,the paper has studied the influence of such factors on the smoke movement,as the height of spandrel,the width of horizontal projection,the width of heat passage,the breaking of external wall,as well as the wind speed,etc.

分析发现，增设防火挑檐、加宽幕墙热通道可降低烟气对上层幕墙的影响，而在0.8m高的基础上再增加窗槛墙高度并不能起到更好的防火效果；外幕墙破碎后，可将大部分烟气排出到外界空间，对上层幕墙的影响会减弱；室外风速会加速烟气的蔓延，但可降低烟气温度。

Integration equations have been derived which discribe the relationship between spherical projection and image function.

第三章和第四章分别求出了两种模式近场微波分集成像系统的图像函数解。

At a value of zero there is no effect, while at a value of 1.0 it is a spherical projection of the noise function, creating a starburst effect.

零值没有效果，当值为1.0的时候它变成一个杂色函数的球面投影，创建一个星爆炸效果。

The results show that the design method which unifies the stereographic projection and the spherical triangle analytic geometry is one kind of both simple and the quick methods.

研究表明，采用极射赤平投影和球面三角形解析几何相结合的设计计算方法，是一种既简便又快捷的定向钻进轨迹设计方法。

A 3-D face model is constructed by the imaging theory and spherical harmonics, combining with the principle of 3-D projection and PCA.

根据3-D数据的优势，利用图像成像原理和球面调和函数理论，结合3-D投影原理和PCA技术建立了一个3-D人脸模型。

Undertake major customers to sample processing, in accordance with customer requirements to design, manufacture, main products have various types of 2mm-250mm spherical mirror, flat lens, digital color TV projection lens, high precision and all kinds of lenses, such as a prism.

主要承接客户的来样加工，根据客户要求进行设计、制造，主要产品有2mm-250mm的各类球面镜、平面透镜、数码彩电背投镜、高精密棱镜及各类镜片等。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。