2) baker transformation
面包师变换
1.
Digital Image Encryption Based on Baker Transformation;
基于面包师变换的数字图象加密
2.
For the purpose of digital image encryption, Masaki Miyam et al extend the classical baker transformation to its truncated version.
为了对数字图像进行加密 ,MasakiMiyam等把经典面包师变换推广到截断面包师变换情形 ;邹建成等给出了三进制下的截断面包师变换的数字图像信息加密方法 。
3.
We put forward here a digital image scrambling algorithm based on baker transformation,in which the definition of k-th system baker transformation is given and its application in digital image scrambling has been discussed.
提出了一种基于面包师变换的数字图像置乱新算法。
3) Truncated baker transformation
截断Baker变换
4) Truncated triangular transformation
截断三角变换
5) creep transformed-section method
徐变换算截面法
1.
Formulas are deduced to calculate creep and shrinkage stresses of reinforced concrete beams based on creep transformed-section method,and creep coefficients of plain concrete are obtained according to two years test on concrete columns.
基于徐变换算截面法推导了钢筋混凝土梁徐变收缩引起的截面应力计算公式,根据混凝土柱体2年试验观测,得到了素混凝土的徐变系数。
2.
Based on 1001 days experiment of the external concrete box girder prestressed with CFRP tendons,the law of section stress redistribution caused by creep and shrinkage effects is analyzed with the creep transformed-section method.
以体外配置CFRP筋预应力混凝土箱梁1 001 d的长期受力性能试验为基础,采用徐变换算截面法对收缩徐变效应引起的截面应力重分布规律进行分析。
3.
To do that, 1006 days\' long-term behavior test is carried out, and concrete shrinkage, creep and uneven settlement of elastic supports are considered by means of creep transformed-section method.
以钢筋混凝土连续箱梁1006d的长期受力性能试验为基础,考虑混凝土收缩徐变和弹性支座不均匀沉降影响,采用徐变换算截面法分析了连续箱梁的结构内力重分布、截面应变应力重分布和长期挠曲变形,并与实测结果进行对比分析。
6) cut-off replacement
截断更换
补充资料：Radon变换和逆Radon变换
Radon变换和逆Radon变换
X线物理学术语。CT重建图像成像的主要理论依据之一。1917年澳大利亚数学家Radon首先论证了通过物体某一平面的投影重建物体该平面两维空间分布的公式。他的公式要求获得沿该平面所有可能的直线的全部投影(无限集合)。所获得的投影集称为Radon变换。由Radon变换进行重建图像的操作则称为逆Radon变换。Radon变换和逆Radon变换对CT成像的意义在于，它从数学原理上证实了通过物体某一断层层面“沿直线衰减分布的投影”重建该层面单位体积，即体素的线性衰减系数两维空间分布的可能性。
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