Bi-histogram equalization with a plateau limit for digital image enhancement. - Chen Hee Ooi; Nicholas Sia Pik Kong; Haidi Ibrahim (IEEE Trans. Consumer Electron., 2009)

Adaptive contrast enhancement methods with brightness preserving. - Chen Hee Ooi; Nor Ashidi Mat Isa (IEEE Trans. Consumer Electron., 2010)

Quadrants dynamic histogram equalization for contrast enhancement. - Chen Hee Ooi; Nor Ashidi Mat Isa (IEEE Trans. Consumer Electron., 2010)

A new histogram equalization method for digital image enhancement and brightness preservation. - Sheng Hoong Lim; Nor Ashidi Mat Isa; Chen Hee Ooi; Kenny Kal Vin Toh (Signal Image Video Process., 2015)