This paper gives a necessary condition for only a system of distinct representaives existed in sets by sets symmetric difference,revealing the relation between the symmetric difference and the system of distinct representatives of sets.
由集族的对称差给出了集族存在唯一的相异代表系的一个必要条件 ,揭示了集族的对称差与相异代表系之间的关
The symmetric difference of the sets is one of the basic operation of the sets, and it plaies an important role in measure theory and its applications.
集合的对称差是集合的基本运算之一，它在测度论及其应用中扮演着一个重要的角色。
The transfer formula between asymmetric tolerance marking and symmetric tolerance marking is deduced by the mathematical method.
利用数学方法,推导不对称公差标注与对称公差标注间的转换公式。
The process dimension chain is calculated by the dimension chain calculating formula of symmetric tolerance marking.
利用对称公差标注时尺寸链的计算公式,进行工艺尺寸链计算。
A method was put forward and examined in which symmetric tolerance was applied to solve the problem.
分析使用Pro/E软件设计注射模时塑件公差采用基孔制与基轴制会导致成型零件不合格的问题,提出并验证采用对称公差解决问题的办法,并用实例演示不同情况下塑件建模时为取得对称公差的具体操作过程,对使用Pro/E软件设计注射模的成型零件具有重要作用。
Based on the continuity and relativity in time and space of video surveillance sequences,similar face areas were found in motion areas using symmetrical frame differences of video sequences and the clustering of skin-color features.
根据视频监控图像在时间和空间上的连续性和相关性,利用视频图像对称差分,找到运动区域,再结合人脸肤色的聚类特征确定出人脸候选区域,改进了基于规则的人脸定位方法,利用人脸的几何特征,实现复杂视频图像中的多人脸检测。
A human face detection method based on symmetrical frame difference,skin-color model and geometry feature is fast.
利用对称差分、肤色模型和几何特征相结合可以快速实现视频图像中的人脸检测,具体做法是:先利用图像对称差分方法得到运动区域,再用肤色检测方法在运动区域中得到人脸候选区域,最后通过检测眼睛位置,利用人脸几何特征精确定位人脸。
With symmetrical frame difference mechanism,moving objects in middle frame can be quickly detected.
本文基于立体视频序列的时空特性和左右通道间的视差特性,提出了一种结合对称差分的变化检测和秩空间立体匹配的立体视频对象分割算法。
Background reconstruction algorithm based on symmetrical differencing;
基于对称差分的背景重构算法
New algorithm for detecting moving object based on adaptive background subtraction and symmetrical differencing;
基于动态阈值对称差分和背景差法的运动对象检测算法
Moving objects detection algorithm based on background subtraction and symmetrical differencing;
基于减背景与对称差分的运动目标检测
The algorithm combines symmetrical DFD and adaptive thresholding approach to get CMD,and finally segment the moving object.
对视频运动对象分割算法进行了研究,该算法结合对称差分和自适应阈值选取,获得变化检测模板,并最终分割出视频运动对象。
In order to make highly effective segmentation and realize real time and low rate video coding, we propose a rapid video segmentation algorithm based on symmetrical DFD.
基于 MPEG- 4的图像压缩编码 ,为了高效率分割 ,实现低码率实时压缩 ,提出一种快速的基于对称差分的视频分割算法 。
Studies on Moving Object Segmentation Based on Symmetrical Differencing Algorithm in Video Sequences;
基于对称差分算法的视频运动目标分割研究
symmetrical heterostatic circuit
对称异电位差连接电路
symmetrical (achromat)lens
对称式(消色差)透镜
Process Capability Index on Unilateral and Asymmetric Tolerance
单侧公差及非对称公差过程能力指数
On "The Cultural Differences" of Kinship Terms:The Comparison of Chinese,English and Uygur Aspects;
试论亲属称谓之“文化差异”——英、汉、维亲属称谓对比
The Balanced Dual-mixer Heterodyne for Measurement of Phase Difference between two Coherent Lights;
对称双混频外差法测量相干光的相位差
The principle of choice and deviation measurement of symmetry tolerance in key coupling
键联结中对称度公差的选择原则与误差检测
the error of route dissymmetry caused by backhaul is avoided;
避免了回程引起的路由不对称误差;
Research on Finite Difference Solutions for Symmetric Regularized Long-wave Equation;
对称正则长波（SRLW）方程的有限差分方法
New Lower Bounds for the Symmetric L_2-discrepancy and Their Application;
对称化L_2-偏差新的下界及其应用
Asymmetric CARCH Effective Analysis of SZCI and SHCI Balance;
沪深股指差额非对称的CARCH效应分析
Asymmetric Information, Bank Reputation Diversity and Finance Regulation;
信息不对称、银行声誉差异与金融规制
A Class of Process Capability Indices Based on Asymmetric Tolerances;
一类基于非对称偏差的过程能力指数
The Formation and Function of Two Concepts of Extended Symmetry and Deviation Number;
拓展对称与偏差数概念的形成及作用
Design of Full Differential Detection ASIC for Full Symmetrical Micro Mechanical Gyroscope
全对称微机械陀螺全差分检测ASIC设计
To Analyze the Reactive power Measure Error of Non-balance Three-phase Circuit with Balance-Phasor Method;
用对称分量法分析不对称三相电路无功电能的测量误差
Dynamic Hedging with Index Futures Considering Asymmetric Effect of Basis;
考虑基差影响非对称效应的股指期货对冲策略
From Parity to Chirality-Experimental Search for Parity-viola-ting Energy Difference of Alanine and Valine Enantiomers
宇称与手性──丙氨酸(缬氨酸)对映体宇称破缺能差的实验探索