TWO-DIMENSIONAL CODE GENERATION DEVICE, TWO-DIMENSIONAL CODE GENERATION METHOD, AND PROGRAM

In a two-dimensional code generation device (100), a white point determiner (111) determines a white point in an environment to output a two-dimensional code. A threshold acquirer (112) acquires a threshold of lightness used by a reading device for reading multiple cells in binary, the threshold bei...

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Bibliographic Details
Main Authors AZUMA Youichi, TOYOIZUMI Hiroshi, TOKIWA Takuji, NISHIYAMA Toshiki
Format Patent
LanguageEnglish
French
German
Published 22.05.2019
Subjects
CALCULATING
COMPUTING
COUNTING
HANDLING RECORD CARRIERS
PHYSICS
PRESENTATION OF DATA
RECOGNITION OF DATA
RECORD CARRIERS
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Summary:In a two-dimensional code generation device (100), a white point determiner (111) determines a white point in an environment to output a two-dimensional code. A threshold acquirer (112) acquires a threshold of lightness used by a reading device for reading multiple cells in binary, the threshold being represented in a device-independent color space that is based on the white point determined by the white point determiner (111). A two-dimensional code generator (113) generates a two-dimensional code expressing information by a distribution pattern of multiple cell dots formed by coloring the multiple cells in a color of lightness equal to or higher than the threshold acquired by the threshold acquirer (112) and in a color of lightness lower than the threshold.
Bibliography:Application Number: EP20150877797