公开(公告)号：US20240176970A1

公开(公告)日：2024-05-30

申请号：US18284977

申请日：2022-03-31

Applicant: DENSO WAVE INCORPORATED

Inventor： Kentaro SASAKI ,  Koji KONOSU ,  Yuichi ITO ,  Yosuke KANBE ,  Takeshi FUJISUMI ,  Yoshihiro YAMAZAKI ,  Ryohei KAGAMI

IPC: G06K7/14 ,  G06K7/10

CPC classification number: G06K7/1465 ,  G06K7/1417 ,  G06K2007/10524

Abstract: 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.

公开(公告)号：US20220058356A1

公开(公告)日：2022-02-24

申请号：US17419225

申请日：2019-12-25

Applicant: DENSO WAVE INCORPORATED

Inventor： Kenryo YAMAMOTO ,  Koji KONOSU ,  Makoto ITO ,  Kentaro SASAKI

IPC: G06K7/14 ,  G02F1/1337 ,  G06K7/10

Abstract: In an optical information reader which optically reads an information code, a first polarizing unit arranged on the light-exit side of a lighting unit is configured to polarize illumination light therefrom in a predetermined polarization direction. In addition, a second polarizing unit arranged on the light-reception side of a light receiving sensor is configured as a switchable polarization unit, in which the switchable polarization unit is capable of performing a switchover between a polarized state in which light reflected from the information code is polarized in a direction different from the predetermined polarization direction and a passing state where the reflected light passes therethrough without being polarized.