In this research, we propose a method for designing a tillable figure, that is, it fills a two-dimensional space by translation, rotation, and reflection with no gaps or overlaps. A tiling of the plane is a collection of one or several types of shapes, or tiles, that cover the plane without any gaps and overlaps. It is difficult to manually… Read more →
QR code, a kind of two-dimensional barcode, is used as shortcuts from physical media to online information in addition to object recognition purpose. However, QR code has become visually unpleasant with the global popularization of QR code. We propose a method to decorate QR code by arranging module (black and white cell) patterns to be similar to a target image…. Read more →
Purpose: Designing a technology to distiguish authoritative 2D codes and their illegal replica that are displayed on mobile phone and smartphone screens and used as tickets. Research outline: The member of this project has developed a method for 2D code authenticity determination using semi-fragile watermark technology. The watermark was designed by optimization system with actual smartphones. This project aims to… Read more →
Our paper “User-System Cooperative Evolutionary Computation for both Quantitative and Qualitative Objective Optimization in Image Processing Filter Design” will be published in Applied Soft Computing Journal. Free access until 26th March, 2014: http://elsarticle.com/1ej7JRE – This study proposes a cooperative evolutionary optimization method between a user and system (CEUS) for problems involving quantitative and qualitative optimization criteria. In a general Interactive… Read more →
This paper proposes a cooperative search method by a user and a system (CEUS) for design problems involving both qualitative and quantitative objective functions.
Recent popularization of two-dimentional code involving monetary worth such as an airplane bording pass requires technologies for its illegal copy detection. This paper proposes a method for implanting a watermark into a decorated color QR code for detecting counterfeit QR code which is copied by photocopiers in stores.
