TY - GEN
T1 - Using modified digital halftoning technique to design invisible 2D barcode by infrared detection
AU - Wang, Hsi Chun
AU - Cheng, Ya Wen
AU - Huang, Wan Chi
AU - Chang, Chia Long
AU - Lu, Shih Yun
N1 - Funding Information:
This research is partially supported by National Science Council (Taiwan, R.O.C.) under the grant of NSC99-2221-E-003-013. The measurement of YMCK inks’ transmission spectrum from Professor Liu, Hsiang-Lin in Department of Physics at National Taiwan Normal University (NTNU) is specially appreciated.
PY - 2013
Y1 - 2013
N2 - 2D barcode is an important interface to connect physical environment with virtual (digital) world. It is commonly presented at printing substrates whose embedded information can be captured through optical recognition system. Yet, for human perception, the black-and-white barcode is not only meaningless but also aesthetically displeasing. Therefore, this study utilized a modified digital halftoning technique to make 2D barcode invisible under normal reading condition; however, it can still be detected by infrared devices. The research composes halftone dots of both amplitude modulation (AM) and frequency modulation (FM) to create an infrared watermark due to the different absorption properties between K (black) ink and CMY (cyan, magenta, and yellow) inks under infrared light. The results show that the proposed method successfully avoids 2D barcode distracting people from normal reading. The method conforms to the existing printing process without requiring any special inks or materials. In the future, the technique can be applied to product packaging and brand protection.
AB - 2D barcode is an important interface to connect physical environment with virtual (digital) world. It is commonly presented at printing substrates whose embedded information can be captured through optical recognition system. Yet, for human perception, the black-and-white barcode is not only meaningless but also aesthetically displeasing. Therefore, this study utilized a modified digital halftoning technique to make 2D barcode invisible under normal reading condition; however, it can still be detected by infrared devices. The research composes halftone dots of both amplitude modulation (AM) and frequency modulation (FM) to create an infrared watermark due to the different absorption properties between K (black) ink and CMY (cyan, magenta, and yellow) inks under infrared light. The results show that the proposed method successfully avoids 2D barcode distracting people from normal reading. The method conforms to the existing printing process without requiring any special inks or materials. In the future, the technique can be applied to product packaging and brand protection.
KW - 2D barcode
KW - Halftoning
KW - Infrared
UR - http://www.scopus.com/inward/record.url?scp=84881072714&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84881072714&partnerID=8YFLogxK
U2 - 10.1007/978-1-4614-6747-2_22
DO - 10.1007/978-1-4614-6747-2_22
M3 - Conference contribution
AN - SCOPUS:84881072714
SN - 9781461467465
T3 - Lecture Notes in Electrical Engineering
SP - 179
EP - 186
BT - Intelligent Technologies and Engineering Systems
T2 - 2012 1st International Conference on Intelligent Technologies and Engineering Systems, ICITES 2012
Y2 - 13 December 2012 through 15 December 2012
ER -