In this paper,with the experiment in color image databases,it is shown that the SVs contain little information of color image and most important information is contained in the two quaternion unitary matrices of SVDQ.

• 本文首先以实验证明了彩色图像矩阵的奇异值(SVs)仅含有图像的少量信息,大量信体现在图像矩阵的奇异值分解(SVDQ)的两个四元数酉矩阵中。