用双代数形式表示的不变量具有简洁、具体的表达式，可以由图像点坐标和基础矩阵直接求出。
The invariants of double algebra's form has simple and explicit expression which can be computed directly by coordinates of image points and fundamental matrix.
双谱是一种平移不变的特征，含有丰富的相位信息，但它是二维函数，不利于模板匹配。
Bispecra is a translation-invariant character, contain abundant phase information, but it is two dimension, and misfit board match.
利用构造不变量理论，研究了一种含时双阱玻色-爱因斯坦凝聚系统的精确解，得到了相应的几何相因子。
By making use of the invariant theory, the exact solution for a time-dependent system of double-well Bose-Einstein Condensate and corresponding geometric phase are obtained.
在对双色性反射模型理论分析的基础上，定义和分析了多种彩色不变特征。
In this paper we define and analyze a number of color constancies based on dichromatic reflection model.
然后，本文在传统双闭环控制的基础上，内环的控制算法不变，改变外环控制器的设计算法，主要采用IP控制方案。
Then, this thesis applies IP control algorithm to change controller in outer loop but not in inner loop based on basic double closed loop control system.
基于这个不变的数字特征，本文提出了种基于图像DCT域的鲁棒性水印和脆弱性水印共存的双水印算法。
Based on this, the paper proposes a double watermarking algorithm based on DCT domain that the coexistence of robust and fragile digital watermarking can be achieved.
充分利用双树复小波变换的旋转不变性、良好的方向选择性以及有限的冗余等优点，将其有效地应用于纹理特征提取过程中。
The excellent characteristics of rotation-invariance, good orientation selection and finite redundancy are fully utilized, and applied in texture feature extraction.
以五杆四驱动的平面双足步行机器人为对象，研究了其动态步行的时不变步态规划和限定时间的非线性控制策略。
This paper addresses time-invariant gait planning and finite-time nonlinear control strategy for a five-link, four-actuator planar biped robot to realize dynamic walking.
重新考察了二次映射双曲不变集的存在性，并对现有论证作了若干补充。
The existence of hyperbolic invariant set possessed by the quadratic map is re-examined. Some details missed in the references are provided and a new type of finite subshifts is found.
传统的双闭环pid控制策略研究的是线性时不变的控制问题。
The research of traditional double-closed-loop PID control strategy is the linear time-invariant control problems.
传统的双闭环pid控制策略研究的是线性时不变的控制问题。
The research of traditional double-closed-loop PID control strategy is the linear time-invariant control problems.
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