Unicode-based image generation and testing
作者： Gursev Singh Kalra
DOI:
关键词:
摘要: Systems and methods for testing to tell computers humans apart generating said tests are described. To generate a test, selection of range characters at least including the 8-bit ASCII character is received. Each in selected tested determine if has glyph font, whitespace character, leaves visible impression. From all that pass tests, plurality challenge, larger set (that includes from challenge) response. An image generated challenge response, solution threshold calculated based on location within
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