Identification code recognition system and method

Patent metadata

Field	Value
Publication number	US-10878267-B2
Application number	US-201816146421-A
Country	US
Kind code	B2
Filing date	Sep 28, 2018
Priority date	Jun 27, 2018
Publication date	Dec 29, 2020
Grant date	Dec 29, 2020

Abstract

The present disclosure provides an identification code recognition system, including: a camera configured to capture an image of an entire area of an identification code (ID code) engraved on a workpiece; a scanner configured to scan a partial area including at least one misrecognized character in the entire area of the ID code; and an image analyzer including a memory and a processor, wherein the memory is configured to store the ID code, data related to the ID code, an image captured by the camera, and an image scanned by the scanner, and the processor is configured to analyze the image captured by the camera and the image scanned by the scanner based on an image analysis logic.

First claim

What is claimed is:

1. An identification code recognition system, comprising:
a camera configured to capture an image of an entire area of an identification code (ID code) that is engraved on a workpiece;
a scanner configured to scan a partial area including at least one misrecognized character in the entire area of the ID code;
an engraver head that is movable toward the workpiece by a robot;
an engraver disposed in the engraver head and configured to engrave the ID code on the workpiece;
an engraver controller comprising a memory that is configured to store data regarding the ID code, wherein the engraver controller is configured to control an operation of the engraver; and
an image analyzer comprising a memory and a processor,
wherein the memory is configured to store the ID code, data related to the ID code, an image of the entire area captured by the camera, and an image of the partial area scanned by the scanner, and
the processor is configured to analyze the image of the entire area captured by the camera and the image of the partial area scanned by the scanner based on an image analysis logic,
wherein the engraver head comprises a body having a first receptacle configured to receive the engraver, and a second receptacle configured to receive the camera and the scanner.

2. The identification code recognition system of claim 1 , wherein the processor is configured to perform a first image analysis to obtain a recognition result value of the image of the entire area captured by the camera, wherein the first image analysis compares the image of the entire area captured by the camera with a reference pattern.

3. The identification code recognition system of claim 2 , wherein the processor is configured to perform a secondary image analysis to obtain a partial correction value of the image of the partial area scanned by the scanner, wherein the secondary image analysis compares the image of the partial area scanned by the scanner with the reference pattern.

4. The identification code recognition system of claim 3 , wherein the processor is configured to combine the recognition result value and the partial correction value to obtain a final result value.

5. The identification code recognition system of claim 1 , wherein the engraver is movably mounted in the first receptacle to move along a biaxial direction.

6. An identification code recognition method using the identification code recognition system of claim 1 , comprising:
receiving an identification code (ID code) corresponding to a workpiece from a manufacturing execution system (MES);
obtaining a first image of an entire area of the ID code engraved on the workpiece;
obtaining a recognition result value of the first image through first image analysis logic, wherein the first image analysis logic compares the first image with a reference pattern;
comparing the recognition result value with the ID code received from the MES to determine whether misrecognition occurs;
when it is determined that at least one character of the recognition result is misrecognized, obtaining a second image of a partial area including at least one misrecognized character;
obtaining a partial correction value of the second image through second image analysis logic, wherein the second image analysis logic compares the second image with the reference pattern; and
obtaining a final result value by removing the at least one misrecognized character from the recognition result value and by combining the recognition result value and the partial correction value.

7. The identification code recognition method of claim 6 , wherein the first image is captured by a camera.

8. The identification code recognition method of claim 6 , wherein the second image is scanned by a scanner.

Assignees

• Hyundai Motor Co Ltd
• Kia Motors Corp

Inventors

• Seong Ha Seung

Classifications

• B44B3/009 Primary

  using a computer control means · CPC title

• G06V30/1448

  based on markings or identifiers characterising the document or the area · CPC title

• G06V30/142 Primary

  using hand-held instruments; Constructional details of the instruments · CPC title

• G06V30/10

  Character recognition · CPC title

• G06V10/245

  by locating a pattern; Special marks for positioning · CPC title