Denso Wave Corporation

Yosuke Kanbe

Masahiro Hara

Koji Konosu

Yuichi Ito

Soutaro Tabata

Yoshihiro Yamazaki

Ryohei Kagami

Kentaro Sasaki

Toshio Morimoto

Takeshi Fujisumi

In an information reader, a first relationship information, which defines the two-dimensional area of a first information code (e.g., the position coordinates of the four corner points), is detected from a first information code image. The first information code is subjected to reading information, based on the detected first relationship information. Parameters of a learning model are then adjusted based on training data including multiple successful cases of a reading process using the first relationship information. A second information code image captured by a camera is inputted to the learning model. A second relationship information, which is an estimated value of the information that defines the two-dimensional region of the second information code, is obtained from the learning model. The information recorded in the second information code is read based on the acquired second relationship information, thus reading results being outputted.

Information reader

A two-dimensional code that is capable of suppressing unnecessary code detection processes related to detection of a code area is provided. Among outer edges of a rectangular code area, a first edge that is composed of a plurality of types of cells arrayed in a single row is configured such that a specific pattern that is composed of an array of two or more differing cells is repeated in at least an intermediate portion. A second edge composed of the plurality of types of cells arrayed in a row such as to oppose the first edge is configured such that the specific pattern is repeated in at least an intermediate portion.

Two-dimensional code composed of a plurality of types of cells

Growing community of inventors

Chita-gun, Japan

Yosuke Kanbe