Enhancement of uneven lighting text image using line-based Empirical Mode Decomposition. - Soo-Chang Pei; Mary Tzeng; Yu-Zhe Hsiao (ICASSP, 2011)

Uneven illumination removal and image enhancement using empirical mode decomposition. - Soo-Chang Pei; Yu-Zhe Hsiao; Mary Tzeng; Feng-Ju Chang (J. Electronic Imaging, 2013)