Patent ID: 9558337
Date: 2017-01-31
CPC Classifications: G06F,G10L,H04L,H04M

Claim:
1. An automated method for generating Completely Automated Public Turing Test to Tell Computers and Humans Apart (CAPTCHA) challenge items with a CAPTCHA computing system, comprising: generating a set of candidate CAPTCHA challenge items with a CAPTCHA synthesis engine operating on the CAPTCHA evaluation computing system, such that each candidate CAPTCHA challenge item includes a CAPTCHA question and a target CAPTCHA answer; presenting a first computer system with said set of candidate CAPTCHA challenge items; determining, with the first computer system, machine answers to the candidate CAPTCHA challenge items; with the CAPTCHA computing system and based on said machine answers, measuring an ability of said first computer system to correctly determine said target CAPTCHA answers; identifying with the CAPTCHA computing system, based on said measuring, at least a first candidate CAPTCHA challenge item of the set of candidate CAPTCHA challenge items for which said machine answers do not meet a threshold of acceptability and selecting the first candidate CAPTCHA challenge item as a selected CAPTCHA challenge item; and storing said selected CAPTCHA challenge item.