查询词典 feature

A new image registration algorithm is presented based on contour-feature, which involves extracting the contour of the image, calculating the normal angle of each contour point and proceeding normal angle histogram statistics, then estimating quickly the rotation angle between two images by circular correlation of normal angle histograms.

提出了一种新的基于轮廓特征的图像配准算法，首先提取图像轮廓并计算每个轮廓点的法向角，然后对轮廓点法向角进行直方图统计，通过对两幅图像的轮廓点法向角直方图进行圆周相关计算便可快速估计出两幅图像所存在的旋转角度。

And the matching point pairs are obtained by comparing the Euclidean distance of the Zernike moments,which are computed around a circular neighborhood centered at the feature point.Then the transform parameters are computed through the correct mapping model.Finally,the weighed average method is used to achieve image mosaic.

该算法利用曲率尺度空间角点检测法提取特征点，通过比较各特征点圆形邻域Zernike矩的欧式距离得到匹配点对，然后利用正确的映射模型计算出变换参数，最后采用加权平均法得到图像的拼接结果。

The circular projection transformation is a method of feature extraction that has scale, rotation, and translation invariance.

圆周投影变换是一种具有尺度、旋转、平移不变性的特征提取方法。

This feature gives a reasonable explanation for the mechanism of CAS. The phase velocity of diffraction fields for uniform plane wave on a circular aperture has been investigated. It is shown that diffraction can result in subluminous phase velocity at certain points of optical field in vacuum.

如果相对论电子能够注入到这一通道内，那么它与激光场间的相移就可能变得非常小，从而能够长时间地保持在加速相中得到极高能量。

CISC processors generally feature variable-length instructions, multiple addressing formats, and contain only a small number of general-purpose

CISC处理器一般产生变长的指令，多种地址格式，并且仅仅有少量的通用寄存器。

CISC processors generally feature variable-length instructions, multiple addressing formats, and contain only a small number of general-purposeregisters.

CISC处理器一般产生变长的指令，多种地址格式，并且仅仅有少量的通用寄存器。

CISC processors generally feature variable-length instructions, multiple addressing formats, and contain only a small number of general-purpose registers.

CISC处理器一般产生变的指令，多种地址格式，并且仅仅有少量的通用寄存器。

Main feature of this clamshell - many different colours.

这款全新的翻盖手机的主要特点是--拥有众多不同的颜色版本。

Therefore, it is necessary to study feature selection algorithms and different classification algorithms.

因此，对特征选择算法的研究与不同分类算法的研究都是十分必要的。

They both are one of abstract expressions to geographic space and time. By comparison, the latter is the target of GIS development. Feature classification, which must be based on cognitive classificatory theory, is the key to the latter.

二者都是对地理时空的一种抽象表达，对比分析后认为，基于特征的数据组织更符合人们的思维认知习惯，是GIS数据组织追求的目标；基于特征的数据组织方法的关键是特征分类，特征分类必须以认知分类理论为基础。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。