向...提取

From a uncertain point which located outside of the figure to draw radial, according to the junction of radial and polygon to judge the internal and outside relationship; Boundary algebra filling, a vector convert to raster arithmetic which based on integral thought, suit for polygon vector convert which

录拓扑关系的多边形矢量数据转换，方法是由多边形边界上某点开始，顺时针搜索边界线，上行时边界左侧具有相同行坐标的栅格减去某值，下行时边界左侧所有栅格点加上该值，边界搜索完毕之后即完成多边形的转换。关系，并表示成矢量格式边界线的过程。步骤包括：多边形边界提取，即使用高通滤波将栅格图像二值化；边界线追踪，即对每个弧段由一个节点向另一个节点搜索；拓扑关系生成和去处多余点及曲线圆滑。

The robust method, which improves the GVF and optimizes search by PGA, is proposed to extract contour veraciously in this section. Due to the information exchange between adjoining points by chromosome crossover, the points are driven to optimization positions in the fined-grained model.

因此，本文通过改进GVF Snakes梯度矢量流，并引入遗传优化搜索，提出了一种稳健的目标提取与跟踪算法：即对于收敛于局部极值处的轮廓控制点，利用细粒度遗传算法，将相邻的处于全局最优控制点的信息通过染色体遗传操作传递给这些点，并驱使它们向全局最优处运动。

In the modern society, with the development of the TV technology in the digital and the multimedia way, the virtual studio technology is the focus in 21 century. As the key in the virtual studio, the matting technology in video will be a good future.

在现代社会中，随着电视技术向数字化、多媒体方向发展，虚拟演播室技术已经成为21世纪的新热点，而作为虚拟演播室系统中视频对象提取技术更是展现出了广阔的应用前景。

Firstly, the dissertation designed and realized a color catadioptric omni-directional vision system according to the need of Middle-Size League in RoboCup.

本文针对彩色全向视觉系统在中型组机器人应用中的颜色分类、特征提取和传感器模型建立等关键技术进行了研究，研究结果得到了较好的实验验证。

Based on the method of well-logging multiscale analysis, the multiscale characters and the fusion of logging curves under different scales are studied systematically to extract the multicycle features of strata and to establish the corresponding relation between logging data and strata and therefore the improved logging data can be better applied to the evaluation of sequence stratigraphy. Based on the multiscale analysis theory of wavelet, single logging curve is processed through multiscale analyzing.

本文旨在利用建立的测井多尺度分析方法，系统研究测井信号的多尺度特性和不同测井曲线的多尺度信息融合，从原始测井信号中提取出地层的多旋回特征，建立测井数据向地质目标的映射关系，以期将测井资料更好地应用于层序地层评价。

Methods BMSCs isolated from rabbit iliac bone marrow were culture-expanded in vitro. The injectable tissue-engineered bone constructed from autologous PRP, FG, and BMSCs was cultured in vitro, and its biological characteristics were observed including the time of gel formation, histological features, seed cell survival and microscopic structures. Results The constructed injectable tissue-engineered bone began gel formation within 20 to 30 s, and after a week-long culture, the gelatine began to degrade, and numerous well viable fusiform cells could be seen to adhere to the bottom of the Petil dish, Scanning electron microscopy identified globular and olivary cells embedded in the fibrin glue, and numerous small particles could be seen around of the cells.

从兔髂骨处抽取骨髓体外培养BMSCs并诱导向成骨细胞分化，抽取兔自体动脉血提取PRP，以FG、BMSCs、PRP共同构建可注射型组织下程骨并体外培养观察其生物学特性如凝胶形成时间，组织学特点、细胞存活情况及其超微结构特征等结果构建的可注射型组织工程骨可在短时间内形成凝胶，体外培养1周时其中细胞生长良好，电镜下见纤维蛋白网格结构致密，种子细胞及血小板颗粒分布广泛。

Personality traits were evaluated by Eysency Personality Questionnaire that was compiled by Eysency and revised by Gong. Standard scores of Psychoticism, Extraversion and Neuroticism were calculated, and taking 50 points as a boundary. Each dimension was assigned into 2 grades non-psychotic type (P0) psychotic type (P≥50), introversion type (E0), extraversion type (E0), non-nervous type (N0) and nervous type (N≥50). 5 mL ulnar vein blood was obtained without adding decoagulant, and then serum was removed. Genome DNA was extracted from blood clot by conventional chloroform for PCR analysis. PCR product was sequenced by pyrophosphoric acid. SNP was determined by PSQ96 MA sequenator. Allele frequency was analyzed by mass spectrometry.

人格评定采用Eysency编制，龚耀先修订的艾森克人格问卷、计算精神质，内外问，神经质3个个性维度的标准分，并以50分为界，将各维度分为两个等级：非精神病倾向型（精神质0）、精神病倾向型（精神质≥50）；内倾型（内外向0），外倾型（内外向≥多50）；非常经质倾向型（神经质0），神经质倾向型（神经质≥50）取肘静脉血5 mL，不加抗凝剂，弃血清，血凝块常规酚氯仿提取基因组DNA，进行PCR分析PCR产物应用焦磷酸测序PSQ96 MA测序仪进行SNP检测，用质谱法进行及等位方基因频率分析。

Human fetal striatal extracts can effectively induce human fetal NSCs to differentiate into dopaminergic neurons in vitro.

结论纹状体组织提取液具有促进人胚胎神经干细胞向多巴胺能神经元分化的作用。

The author has accomplished the following tasks:1. presented the general scheme of the profile measuring system;2. presented four methods of laser collimation, realized 3 of them with the software of ZEMAX, and meted the requirement of the system design;3. realized the laser beam expanding from point-laser to line-laser wide enough to cover the flange trackside;4. after image grabbing and processing, picked up the profile of the train wheel.

作者独立完成的工作包括： 1、提出了曲面测量的光学系统的整体方案； 2、提出了四种激光扩束的方案，用光学设计软件ZEMAX完成了其中三种的设计；经过像差分析和追迹，达到了准直扩束的要求； 3、点光源到线光源的单方向扩展，达到了覆盖轮缘踏面的要求； 4、通过实验采集图像和图像处理，提取出被测轮缘的轮廓。

Results The results showed that more accurate uniaxial modulus can be extracted using 4 parameters inhomogeneous triphasic model, and the predicted results appeared to match the experimental strain data better than other models.

结果 运用非匀质4参数三相模型可以提取更精确的软骨轴向模量，与其它模型相比，该模型对软骨膨胀的预测结果更接近实验结果。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失