Generate-two-dimensional-code:使用python-qrcode模块生成二维码

This paper firstly, to the best of our knowledge, proposed two-dimensional (2D) encryption based on the Arnold transformation for implementing a secure DC-biased optical orthogonal time-frequency multiplexing (DCO-OTFM) in optical-wireless communications (OWCs). The encrypted data is transformed to the particular 2D matrix and decrypted by the only key to get the correct information. Meanwhile, the number of keys in 2D encryption is enormous, which prevents eavesdroppers from exhaustively search

Two-dimensional (2D) Te nanosheets were successfully fabricated through the liquid-phase exfoliation (LPE) method. The nonlinear optical properties of 2D Te nanosheets were studied by the open-aperture Z-scan technique. Furthermore, the continuous wave mode-locked Nd:YVO

首先，对PDF417条码的编码模式及编码原理进行了较详细的论述，简要介绍了条形码的错误检测和纠正方法；引入了对称DES加密技术与非对称RSA加密技术，对二维条形码进行信息加密的分析与设计，从而生成加密的二维条形码。 其次，对采集到的加密条形码图像进行图像预处理。由于采集的条形码图像，存在着图像倾斜和边缘模糊问题，

本书介绍了一些在2000年以前的相位解包裹算法。在多篇现代的相位三维扫描技术论文中提及，可见其在整个相位测量中的地位和经典。 目录： 1、相位展开综述 2、线积分，误差，以及二维相位展开 3、相位数据，质量图，蒙版法，滤波操作 4、路径跟踪法 5、最小范数法 6、比较与结论 由于图书年代久远，是20年前的技术了。本着追本溯源的精神，过去的思想也许会对今天的创造有所贡献，特此分享。 算法的实现代码也附在资源中，也可自行去网站下载。ftp://ftp.wiley.com/public/sci_tech_med/phase_unwrapping/

Two Dimensional Phase Unwrapping Theory Algorithms and Software，扫描文档，清晰度一般。

Two Dimensional Phase Unwrapping Theory Algorithms and Software，扫描文档，清晰度一般。

Two Dimensional Phase Unwrapping Theory Algorithms, and Software 书中程序代码

Two-dimensional Phase Unwrapping: Theory, Algorithms, and Software一书的源代码