In this paper,we defined the notions of lightcone Gauss map and lightcone height function of a spacelike curve in Minkowski 4-space,and established the relationships between singularities of these objects and geometric invariants of curves under the action Lorentz group.
定义了四维M inkow sk i空间内类空曲线的光锥高斯映射、光锥高度函数的概念,建立了这些对象的奇点与在洛仑兹群作用下曲线的几何不变量之间的关系。
A new existence theorem is obtained by applying the degree theory on cone.
利用锥上的度数理论获得了一个新的存在定理。
AN IMPROVED ALGORITHM FOR ADAPTIVE GRAY LEVEL DIGITAL IMAGE WATERMARKING
一种自适应灰度级数字水印改进算法
Research on the Grayscale Digital Watermark Based on HDWT
基于HDWT的灰度级数字水印研究
Design and Implementation of Gray-level Digital Watermarking Algorithm for Color Image;
彩色图像灰度级数字水印算法设计与实现
Gray-Level Digital Watermarking Technique Based on Singular Value Decomposition Using Wavelet Packet Domain;
基于矩阵奇异值分解的小波包域灰度级数字水印技术
Researched the reason why PV interpolation may lead to wrong registration, and suggested to reduce gray levels to avoid the problem.
研究了PV 插值法导致错误配准的原因,提出了通过调整灰度级数来避免。
Digital Image Scrambling Degree Evaluation Mothed Study Based on Frequency of Gray Levels
基于灰度级出现频数的数字图像置乱程度衡量方法的研究
She judged the picture quality according to the grey degree scale.
她从灰度等级来判断图片的质量。
Gray-Level Linear Transformations Image Enhancement Based on Matlab;
基于Matlab的灰度级线性变换图像增强
An Error Distribution Algorithm for 2-Level Rendition of Continuous-Tone Pictures
多灰度级图象的二级显示的误差分散算法
Adjusts the brightness, contrast and gamma of the image
调整图像的亮度、对比度和灰度系数
Thresholding Based on Maximum Entropic Correlation of Average Gray Level-gradient Two-dimensional Histogram
平均灰度级-梯度二维直方图最大相关阈值分割
numerical system of wool grading
羊毛细度支数分级法
tenth value layer
减弱个数量级的厚度
The theory of greyscale morphology and the method of scanned imageprocessing are discussed in this paper.
讨论了灰度级形态学的基本原理和利用灰度级形态变换进行处理扫描影像的方法。
RESEARCH ON THE DURABILITY OF THE GRAD ORDINARY STRENGTH ADDING CALCIUM FLY ASH CONCRETE
普通强度等级增钙灰混凝土耐久性研究
Furthermore, it can embed a multi-lever gray image.
此外，该算法能够用于多灰度级图像水印的嵌入。
Research on a Grayscale Image Blind Watermarking Algorithm Robusting to Copy Attack;
抗拷贝攻击的图像灰度级盲水印算法的研究
Design and Research of Driver & Controller for 4 Gray Scale STN LCD;
四级灰度液晶显示驱动控制芯片的设计与研究