Development of two-dimensional barcode decord method robust against non-linear distortion

2014 Fiscal Year Final Research Report

• Project/Area Number: 25550078
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Environmental risk control and evaluation
• Research Institution: Kagoshima University
• Principal Investigator: ONO Satoshi 鹿児島大学, 理工学研究科, 准教授 (90363605)
• Co-Investigator(Renkei-kenkyūsha): KAWASAKI Hiroshi 鹿児島大学, 大学院理工学研究科, 教授 (80361393)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: 画像処理 / 2次元コード / 3次元計測 / DPマッチング / 信頼度伝搬法

Outline of Final Research Achievements

Two dimensional (2D) codes have become a widely used technology to efficiently　ncode information especially for object identification without physical contact.　However, 2D codes printed on paper or cloth are subject to distortion, and it is　difficult to correct irregular distortion of 2D code, such as that of wrinkled cloth.
This research proposes a method for decoding two-dimensional barcode involving distortions. The following two approaches were studied. (a) Decode methods from 2D images: a 2D code involving auxliary lines and its decode methods were developed. (b) Decode method from 3D images: two kinds of 3D shape measurement system for 2D code were developed, and a decode method using 3D shape was developed.

Free Research Field

人工知能