Grg Banking Equipment Co., Ltd.

Sun Yat-senuniversity

Siwei Liu

Tiancai Liang

Weifeng Wang

Yi Cheng Zhang

Kun Wang

Panfeng Luo

Rongqiu Wang

Dingxi Chen

Zhenguo Chi

Jiarui Xu

Gang Lei

Zheng Zhao

Chao Qian

Runxin Bei

The invention discloses a polymer with a low dielectric constant and a molecular structure design method capable of reducing the dielectric constant of the polymer. A straight-chain rigid group is introduced into a meta-position of a side group benzene ring or diphenyl chain segment structure by using the designability of a molecular chain side group of a polymer; and a free volume hole with a larger size is formed in the material through loose rotation of the side group benzene ring to inhibit molecular chain deposition, thereby reducing the dielectric constant of the polymer material. The design method is simple, is suitable for a common high-performance polymer material, can be applied to preparation of a low-dielectric polymer material, is suitable for the field of new and high technology industries such as electronics, microelectronics, information and aerospace and is especially suitable for the field of super-large-scale integrated circuits.

Polymer with low dielectric constant and molecular structure design method capable of reducing dielectric constant of polymer

Provided are a quality control method for banknote identification and a quality control system for banknote identification. The quality control method for banknote identification includes: obtaining a multispectral signal collected by a contact image sensor (CIS); extracting a first eigenvalue of the multispectral signal; obtaining a corresponding second eigenvalue according to the first eigenvalue and a pre-set correction conversion value; and inputting the second eigenvalue into a banknote classifier to obtain a corresponding banknote classification result.

Quality control method for paper money authentication and system therefor

A banknote recognition and classification method and system are provided. In the method and system, a large number of reliable samples which are easy to acquire currently are used to establish a sample signal degradation model which meets application requirements by means of a statistical method, sample information is input into the banknote sample signal degeneration model to acquire various banknote sample information corresponding to the brand new banknotes to be learned; the various banknote sample information is input to perform classifier learning, and a banknote classification model is output; then a classifier learns to perform classification and recognition on a sample to be recognized.

Banknote recognition and classification method and system

The present invention relates to a character recognition method. Same comprises: step 1: reading in a character image; step 2: image preprocessing; step 3: character splitting; step 4: edge extraction; utilizing an edge detection operator to detect edge points of characters; step 5: feature extraction, where the features of each edge point of each character are all expressed with distances running from other edge points of the character to the edge point and are represented by eigenvectors (P, P, . . . P); step 6: feature processing, mapping the eigenvectors (P, P, . . . P) into a matrix, T, thus allowing all characters to be identical in eigenvector dimension; and, step 7: template matching recognition. Because the features of each edge point of the characters are all expressed with the distances running from the other edge points to the edge point, the entirety of the features are ensured for the characters, and the difference in features are expanded for different characters, thus increasing character recognition accuracy.

Character recognition method

Growing community of inventors

Guangzhou, China

Siwei Liu