An improved approach for image segmentation based on color and local homogeneity features. - Chen-Sen Ouyang; Chia-Te Chou; Ci-Fong Jhan; Jhih-Yong Huang (ICASSP, 2009)

Improved DCT-Based Watermarking through Particle Swarm Optimization. - Chih-Chin Lai; Wei-Shun Wang; Ci-Fong Jhan (ICCCI (3), 2010)

Digital image watermarking using DCT and z-score transform. - Chih-Chin Lai; Ci-Fong Jhan; Wei-Shun Wang (ICMLC, 2010)