Shanghai Jiao Tong University

Wangsu Science & Technology Co., Ltd.

Yichao Chen

Yahong Zhang

Hao Pan

Guangtao Xue

Wanwan Ke

Shaohui Lin

Qiantai Zhuang

The present disclosure provides a network traffic prediction method, an apparatus and an electronic device. In the present disclosure, the network traffic prediction method includes establishing a higher-level network traffic prediction model, where the higher-level network traffic prediction model includes a linear model; using independent variables of the linear model in the higher-level network traffic prediction model as dependent variables, establishing at least one layer of a lower-level network traffic prediction model, and decomposing independent variables in the lower-level network traffic prediction model till all independent variables of each lower-level network traffic prediction model are acquired naturally; and substituting a calculation model of the lower-level network traffic prediction model into the higher-level network traffic prediction model to obtain a complete network traffic prediction model.

Network traffic prediction method, apparatus, and electronic device

This invention relates to a secure QrCode communication method based on nonlinear spatial frequency characteristics, comprising: camera modeling: modeling according to the spatial frequency of the color filter matrix of the scanning device's camera; QrCode encryption: using the CFA spatial frequency of scanning device and modeling results, as well as the spatial frequency of the display device, generate an encrypted picture of the target QrCode on the display device; QrCode decryption: the camera of the scanning device takes the picture of the display at a specified position and a specified angle, and parses the image to recover the target QrCode. Compared with the prior art, the present invention utilizes the nonlinear characteristics of the optical spatial frequency, and uses the spatial frequency of the camera's own color filter array and the spatial frequency of the display to modulate the target two-dimensional code through phase to achieve the effect of encryption.

Secure QR code using nonlinearity of spatial frequency in light

Growing community of inventors

Shanghai, China

Yichao Chen