2) key extraction
密钥提取
1.
Based on the shortages of the traditional key binding iris cryptosystem, we proposed two methods for its improvement, referred to as the reliable region based key extraction method and the bit masking based key extraction method, respectively.
针对传统基于密钥绑定的虹膜识别技术中存在的不足,本文提出了两种方案对其进行改进,分别称之为基于可靠区域的密钥提取方案和基于均匀位遮挡的密钥提取方案。
3) extraction pureness
提取纯度
1.
It is had reference value in Increase extraction pureness research of effe.
采用正交设计对提高天麻素提取纯度研究的结果使用3次ZTC1+1除杂剂、每次加入0。
4) extraction accuracy
提取精度
1.
In order to verify the extraction accuracy of SVM,carried out a comparison between this method and other methods,such as,the classification extraction method of maximum likehood,object-oriented approach.
结果表明:基于支持向量机方法的提取精度高达93。
5) depth extracting
深度提取
1.
This paper discusses its measurement principle, hardware structure and system software which includes image processing, depth extracting, flatness calculation, and s.
软件部分包括图像处理、深度提取及平坦度计算等。
6) Slope-extraction
坡度提取
1.
Through selecting the representative upland and flat of northwest droughty area as test region and building Digital Slope Model,this paper studies the variational rules of slope-extraction based on DEM with different resolution.
简要介绍了DEM及其获取方法以及坡度计算方法,通过选取西北干旱区具有代表性的丘陵地和平地作为试验区,建立数字坡度模型,研究了不同分辨率的DEM提取坡度的变化规律,并对坡度提取误差进行了分析,对西北干旱区进行与坡度有关的生态环境建设具有一定的参考价值。
补充资料：非密度制约因素(见密度制约因素)
非密度制约因素(见密度制约因素)
l焦非密度制约因素见生态因素、密度制约后
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条