查询词典 null function

In addition, we show that if the distortion factor in the pinhole camera model is null, then the fundamental matrix can be linearly determined by only these 4 coplanar correspondences.

另外 ，如果摄像机不是 5参数模型，而是 4参数模型，则此时仅使用该 4对共面对应点即可线性确定基本矩阵。

Different from the traditional approach of solving GDA by singular value decomposition,the new algorithm utilizes kernel modified Gram-Schmidt orthogonalization algorithm to extract the optimal transformation matrix directly,which can not only effectively hold the most discriminant information in the null space of within-class scatter matrix,but also make the solution more stable in numeric.

与传统用奇异值分解获取目标特征子空间的方式不同，新算法运用核修正格兰-施密特正交化过程直接提取最优投影变换矩阵，不仅有效地地保留了类内散度矩阵最具辨别力的零空间信息，同时使所求解在数值上更稳定。

ABSTRACT In this dissertation, fault-tolerance of redundant manipulators is thoroughly investigated. First, inherent relationship between the dexterity and fault-tolerance of single-redundancy manipulator is discussed. Both the manipulability and the relative manipulability are utilized for measuring the kinematic fault-tolerance of the manipulator with one joint failure. Furthermore, the relative manipulability is used for measuring dexterity loss resulted by one joint failure, and the relationship between the fault-tolerance measurement and null space vector of Jacobian matrix is established.

本文对冗余自由度机器人的答错性问题进行了深入的分析和迭付：首先研究了单冗余度机器人运动学灵活性与容错性之间的内在关系，提出以故障构形的可操作度和相对可操作度来度量机器人的运动学容错性，用相对可操作度来度量关节故障给机器人操作灵巧性造成的损失，并建立了容错性度量指标与Jacobian矩阵零空间向量之间的关系。

In this paper, an improved null space LDA method based on DCT is proposed to solve both problems.

该文提出一种基于DCT的改进零空间LDA方法，能够解决以上两个问题。

Each parameter defined in the get method can be null.

get方法中定义的每个参数可以为null。

This method returns null if no resource with this name is found.

如果文件不存在，返回null；如果存在，就打开为InputStream。

First, by redefining the within class scatter matrix and the between class scatter matrix, a new null space method was presented.

首先，通过重新定义样本的类内散布矩阵和类间散布矩阵，提出了一种新的零空间法。

Then, combined the new null space method with F-LDA algorithm, a completely new feature extraction algorithm for face recognition was given.

然后把这种新的零空间法与F-LDA算法相结合，得到一种对人脸识别更有效的特征提取方法。

The method returns null for territories that dont have a currency, such as antarctica.

对于没有货币的领域，比如南极洲，方法返回null。

The proposed TEQ design method exploit the null tone energy to shorten the channel.

我们提出的时域等化器之设计方法运用在空频道的能量来使等效通道之能量集中。

Don not attempt to do something which you can not to do.

不要企图做那些办不到的事情。

The expression of CTGF and TNF-αweredetected by immunochemistry and the number of Clara Cells was calculated.

光镜下观察肺组织的病理变化，采用免疫组化染色观察肺组织中结缔组织生长因子和肿瘤坏死因子-α的表达和Clara细胞的数量。