Takahiko Horiuchi, Fuminori Nohara, Shoji Tominaga. Semi-Invariant Algorithm for Color to Gray and Back. In 15th Color and Imaging Conference, CIC 2007, Albuquerque, New Mexico, USA, November 5-9, 2007. pages 83-88, IS&T - The Society for Imaging Science and Technology, 2007. [doi]
Abstract is missing.