查询词典 extrinsic feature

In the matching stage, the angle of feature vectors is used as the similarity measure in the high dimensional space directly. This similarity measure is invariant to the linear transformation of feature vectors. Compared with SIFT and normalized correlation, the proposed method needs no primary features such as edges, corners, gradient or shapes which are very unstable in low contrast and low NSR images.

在匹配过程中，以向量之间夹角的大小作为相似度度量，直接利用图像的灰度信息在高维向量空间中考虑图像之间的相似度，克服了在低照度、低信噪比的图像中求边缘、角点、梯度和形状等特征的困难，不受向量模大小以及向量平移的影响，即相似度的计算是线性光照不变的。

Based on scale SVD transform, a target feature extracting method is proposed to solve this difficult problem. The experimental result shows that this method has favorable stability to target matrix's SVD feature vectors, and high invariant property to displacement, rotation and scale.

为解决这一技术难题，文中提出了基于尺度奇异值变换的红外图像目标特征提取方法，实验表明该方法提取的目标矩阵的奇异值特征向量具有较好的稳定性，对图像的平移、旋转和比例变化具有良好的不变性，是一种实用的特征提取方法。

The first method is based multi-scale decompression using wavelet theory, it extract gray feature from each channel to form feature vector, it can distinguishobjects, but this method not have invariant property when object rotate.

红外图像的特征提取：先介绍了传统的特征提取的方法，然后提出了一种多通道特征提取的方法，包括了基于小波的频率多通道和基于灰度的多通道的特征提取方法。

The first method is based multi-scale decompression using wavelet theory, it extract gray feature from each channel to form feature vector, it can distinguish objects, but this method not have invariant property when object rotate.

因此随后提出了基于灰度多通道的特征提取方法，该方法是把目标灰度分成几个区段，然后在各灰度区间分别提取目标的灰度特征，形成特征向量。

The primary character feature curve by this method, called RPCGC (Ring-Projection Curve Gravity Center), has the invariant property with respect to rotation, and then the wavelet feature vectors from RPCGC has stability.

在字符信号f的多分辨率描述中，A〓f代表了信号的低频成份，反映了模式的基本形状，而D〓f代表了信号的高频成份，反映了模式的细节和噪声。

In this paper, we have used the theory of moment invariant to identify the orbit, constructed feature vector based on moment invariant, defined the distance between the two feature vectors, and proposed a new method of the identification, which ...

仿真与实验结果表明，该方法可以有效地识别常见的轴心轨迹，并收到了良好的效果

In this paper, a novel feature MFCC_FWD_BWD, which is based on forward-backward difference dynamic parameters, is presented to satisfy the requirement that the feature construction matrix is invertible for PMC.

本文首先提出了一种基于前后向差分动态参数的特征MFCC_FWD_BWD，该特征满足PMC对特征构造矩阵可逆的要求。

Knowing current talented person, our person follow realizes own biggest ideal with promote principle that we combine together, make everybody very much our development be space, environment that own great ideal that leading, but the feedback is a reasonable spirit feature to talented person with our economic performance, providing to each where there is a will development with term, here the way descend our spirit feature with the exaltation that economic performance got the continuous changes and improvements.

对于现有人才，烟汽模人遵循实现自己的最大理想与发扬光大烟汽模相结合的原则，使每个人都认识到烟汽模的发展就是自己的伟大理想，而反馈给人才的是合理的精神面貌和烟汽模的经济效益，提供给每个有志者发展的空间、环境和条件，在此方针的指导下烟汽模人的精神面貌和经济效益得到了日新月异的提高。

By projecting 3D models into 1D smooth principal curves, equally segmentation and sampling along the length of curve are implemented to extract shape feature vectors, then one can retrieve 3D model according to the matching result of shape feature vectors of 1D manifold.

本文将三维网格模型，投影为三维的光顺主曲线；通过对主曲线沿弧长方向的均匀分割采样，提取主曲线的空间位置和姿态等形状特征；最后通过形状描述向量的比较实现了对应的三维模型检索。

The first symbol is the close lineament feature on the image, the second is the circular structure crossing lineament feature on the image. These two symbols are of he significance of indication for ore looking in the granite growing areas in the south of Hunan province.

根据已知矿床特征和相应影像特征的关系，提出细密线性影像和环、线交切影像两种找矿标志，指出上述标志在湘南花岗岩发育地区具有普遍找矿意义。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。