文献类型：期刊文献

英文题名：Quaternion discrete tchebichef moments and their applications

作者：Zhu, Hongqing[1]; Li, Qian[1]; Liu, Qian[1]

机构：[1] Department of Electronics and Communications Engineering, East China University of Science and Technology, Shanghai, China

年份：2014

卷号：7

期号：6

起止页码：149

外文期刊名：International Journal of Signal Processing, Image Processing and Pattern Recognition

收录：EI(收录号：20150600486862)

语种：英文

外文关键词：Image enhancement - Object recognition - Salt and pepper noise

摘要：The concept of the quaternion is useful for colour image processing and recognition. This paper introduces quaternion discrete Tchebichef moments (QTM), which use the traditional Tchebichef moments (TM) of each colour channel to describe colour images. A set of invariants that are invariant to translation and scale transformations is introduced for colour object recognition and image classification. A theoretical framework is provided for the recognition of colour face images by combining the proposed quaternion Tchebichef moment functions with the sparse representation classification (SRC) strategy for improving recognition despite partial occlusions. Simulation results on standard colour face databases demonstrate the effectiveness of the proposed algorithm, even when the images include Gaussian or pepper-and-salt noise. ? 2014, SERSC.