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

Title:

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

Document Type and Number:

WIPO Patent Application WO/2016/113842

Kind Code:

A1

Abstract:

In this two-dimensional code generation device (100), a white point determination unit (111) determines a white point in an environment in which a two-dimensional code is to be output. A threshold value acquisition unit (112) obtains a lightness threshold value which is expressed in a device-independent color space using, as a reference, the white point determined by the white point determination unit (111), and which is used by a reader device to read a plurality of cells as binary. A two-dimensional code generation unit (113) generates a two-dimensional code that represents information using a distributed pattern of a plurality of cell dots that are formed by coloring a plurality of cells with colors having a lightness equal to or greater than, and with colors having a lightness less than, the threshold value obtained by the threshold value acquisition unit (112).

Inventors:

TOYOIZUMI HIROSHI (JP)
AZUMA YOUICHI (JP)
NISHIYAMA TOSHIKI (JP)
TOKIWA TAKUJI (JP)

Application Number:

PCT/JP2015/050652

Publication Date:

July 21, 2016

Filing Date:

January 13, 2015

Export Citation:

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Assignee:

AT COMM CO LTD (JP)

International Classes:

G06K19/06

Foreign References:

JP2013080448A	2013-05-02
JP2013009387A	2013-01-10
JP4330601B2	2009-09-16

Other References: