Captcha image generation method and apparatus, and server
US10439818B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2017 |
| Grant date | Oct 8, 2019 |
| Priority date | — |
| Expiry date | Nov 4, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/2133
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present disclosure discloses a CAPTCHA image generation method and apparatus, and a server, relating to the field of computer technologies. According to the present disclosure, first noise points are generated on a CAPTCHA code in some regions of an initial image and second noise points are generated on a background of the image in another region, so that a machine cannot filter out the noise points in a CAPTCHA image by means of some simple algorithms, increasing difficulty in recognizing the CAPTCHA code by the machine, reducing a risk that the CAPTCHA code is cracked by the machine, and having a strong crack-proof capability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.