查询词典 contour feather

In order to realize precise compression of scattered data and predigest the establishing process of geometry topology relation, scattered data is converted into scan line data, the point cloud is disposed by the method of direct slicing, the algorithm of intersection between line and surface based on a pair of the least distance relation points and the algorithm of track based on eight directions coding of the section contour data are carried out and the method feasibility is proved by the example.

为了实现数据的精确压缩，简化点与点之间拓扑结构的建立，把散乱数据转化为扫描线数据，对点云数据进行了直接分层处理，采用了基于最小距离关联点对的线面截交算法和截面轮廓数据的八方向编码追踪算法，并用实例验证了方法的可行性。

In this paper, an algorithm based on the combination of the live wire algorithm and the active contour model is proposed for the semiautomatic segmentation of medical image series.

介绍了一种结合live wire算法和活动轮廓模型的医学图像序列的分割方法。

After analysis the characteristics of CT liver serial images, using genetic algorithms to extract liver contour. It is proved to be feasible and effective.

图像的边界提取方法很多，但效果都不佳，本文在分析了肝CT序列特点基础上，利用遗传算法搜索边界，取得了较好结果。

Originally, doctor had to do it by himself from first image to the last. It was inefficient and needed a lot of time. So, how to use computer technology to extract liver contour automatically is an important research field.

肝脏边界的确定是定量分析的前提，原先医生必须对肝CT序列中的每一幅图像都要手工确定肝脏边界，这耗时费力，效率也不高。

Because of cubic B spline curve have several advantages such as local controllable, continuity etc, an active contour model based on cubic B spline curve is proposed in this dissertation.

针对以上问题，结合三次B样条曲线连续性及局部可控性的特点，本文提出了一种基于三次B样条曲线的主动轮廓模型。

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。

This approach effectively overcomes the shortcoming of the grey level intensity based detection approaches. Not only it can extract the local extremum along with the contour, but also it is robust to the noise in the range images.

该方法克服了基于强度特征的检测方法中存在的一些缺陷，能够有效得提取关键点在轮廓方向上的极值性，并对轮廓上的噪声也有很好的抑制效果。

That is a representation approach of local maximum feature vector of target contour.

在此基础上提出了另一种基于目标轮廓LMFV的目标识别方法。

Based on the analysis on existing rapid prototyping technologies, a new thick layer LOM technology based on cutting contour of cutter's tangent line is suggested.

在分析目前已有的各种快速原型制造技术缺点的基础上，提出了一种新型的基于刀具切线切割轮廓的厚层叠层制造技术。

S:Based on the analysis on existing rapid prototyping technologies, a new thick layer LOM technology based on cutting contour of cutter's tangent line is suggested.

在分析目前已有的各种快速原型制造技术缺点的基础上，提出了一种新型的基于刀具切线切割轮廓的厚层叠层制造技术。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。