轮廓

An optical system with refraction and total internal reflection was proposed according to the luminous characteristic of LED and the law of energy conservation. The ordinary differential equations satisfying the spots on the contour curve of TIR refractive and reflective planes were established. The coordinates of points on profile curves were obtained by solving these ordinary differential equations using Runge-Kutta method. The profile curves were acquired by curve fitting of the coordinate spots with software UG, and then TIR model of the projector and data of the surface shape suitable for NC manufacture were obtained.

根据LED的发光特性以及能量守恒定律选择采用折射全反射光学系统，通过建立TIR折射面及全反射面轮廓曲线上的点所满足的常微分方程，利用RungeKutta求解常微分方程得到轮廓曲线上点的坐标，再在UG中对坐标点进行曲线拟合得到轮廓曲线，进而得到TIR模型及适合数控加工的面形数据。

Results In blank group, the hippocampal structure was clearly viewed, dense neurons with plenty cytoplasm and deep-dyed big nucleolus were observed. Neurons were lining up in order with clear border in CA3 region In model group, hippocampal structure was blurred. The number of neurons decreased greatly, and cells were lining up; rregularly with unclear border. In drug group, the hippocampal structure was clear with more neurons than model group. Neurons had plenty cytoplasm and deep-dyed big nucleolus. Cells were lining up in order with clear border.

结果 空白对照组：海马轮廓清晰，CA3区神经元细胞密集，胞浆丰富，核大深染，细胞间排列整齐，界限清楚；模型对照组：海马轮廓模糊，神经元细胞明显减少，细胞间排列松散，界限不清；药物组：海马轮廓清晰，神经元细胞明显多于模型对照组，神经元胞浆较丰富，核大深染，细胞间排列较整齐，界限清楚。

PDC bit crown profile, consisting of single circular arc parabola profile or dual cone profile with deeper inner taper is introduced. Cutter arrangement for various bits is determined. The bit is improved by the application of hybrid cutting structure and detailed analysis of hydraulic structure. Simultaneously, bit stability is enhanced using multiple bit stable structure design techniques such as deep inner taper, force balance and hybrid cutter arrangement etc.

提出了以单圆弧抛物线形轮廓或双锥轮廓配以较深的内锥组成PDC钻头的冠部轮廓，确定了各种钻头切削齿的分布密度，应用了各类切削齿混合设计切削结构，对PDC钻头的水力结构做了详细分析研究；同时，结合深内锥、力平衡、混合布齿等多种钻头稳定性结构设计技术，以增加钻头稳定性。

The optimizing calculation is based on the reality deformation path and the calculation precise is control by the limit error.

而修改后的切边轮廓再次进行翻边计算，并将其翻边轮廓与目标体轮廓进行比较。

On the basis of image segmentation by complexion and gray information,some rough facial feature contours can be outlined by seed-filling the non-complexional regions.Then a modified color Snake model was used to fine-draw the rough contours.

根据肤色和灰度信息，在图像分割的基础上，利用种子填充技术获得面部各非肤色特征的轮廓初值；然后采用一种改进的彩色Snake模型对轮廓初值进行精确定位；接着，根据人脸的先验知识，利用含有方向信息的形态学边缘检测算子通过一次逐点考察完成下颚轮廓线的提取。

Discrete Fourier Transform and Discrete Cosine Transform are used to get the descriptors of lip contours in the unsymmetrical lip contours model automatically. Hidden Markov Model is trained by using both of the descriptors as the eigenvector of lip contours, and then recognition ability is tested.4. Feature fusion is used to improve the classifiable power.

利用离散傅里叶变换和离散余弦变换分别得到描述唇形轮廓特征的傅里叶描述子和离散余弦变换描述子，然后将两类描述子作为唇形轮廓的特征向量，采用隐马尔可夫模型进行学习和识别，分析了两类描述子刻画唇形轮廓特征的能力。4。

With Fourier synthesis a new digitally filtered profile can be generated from any analysed profile.

从任意的分解轮廓应用傅立叶合成可以生成一个新的数字滤波轮廓，该轮廓也可以被评定。

Basic concepts and definition of suspended tree and extended contour are given, an algorithm to extract it is presented using techniques of dynamic local coordinate system and adaptive bounding box.

文中提出了悬树和扩展轮廓的概念，通过对扩展轮廓的分析和定义，使用动态坐标系和动态包围盒技术，设计了一个扩展轮廓的求取算法。

In this dissertation, the author's works about hinting technique for outline Chinese characters and management of Chinese fonts in page description language are summarized as follows:(1) By analyzing the anomalise of outline Chinese characters when rasterized, flexible methods of grid—fitting for Chinese characetrs in different applications are proposed.

本文针对曲线轮廓汉字库应用中的若干技术问题，以字形控制技术为重点，主要做了以下几个方面的研究工作：(1)分析了曲线轮廓汉字绘制时的小字失真现象和汉字栅格适配的特点，并根据不同的应用要求，归纳出曲线轮廓汉字栅格适配的分级目标和灵活方法。

It is composed of a deformable parametric curve and corresponding energy function.

主动轮廓模型是一种基于高层信息的目标轮廓特征提取算法，它由一条可变形的参数曲线及其相应的能量函数组成，以最小化能量函数为目标，控制参数曲线变形，具有最小能量的闭合曲线就是目标轮廓。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。