Reversible Difference Expansion Embedding Using Two Edge Directions. - Wen-Chuan Wu 002; Wei-Teng Wong; Zi-Wei Lin (CISIS, 2013)

Application of QR-Code Steganography Using Data Embedding Technique. - Wen-Chuan Wu 002; Zi-Wei Lin; Wei-Teng Wong (ITCS, 2013)