关键词: 子带分解, 彩色图像, 正交镜像滤波器组

Abstract: A scheme for layered color image coding based on subband decomposition is proposed in this paper, in which FDS (Frequency Domain Separation) is adopted to derive pyramid structure from the frequency components of source color image, i.e. it can be divided into several subbands with different frequency through QMF (Quadrature Mirror Filters) and coded for these subbands individually. DCT (Discrete Cosine Transform) is utilized to code the base band and coding of subbands with high frequency is implemented by vector quantization considering the real application to ATM (Asynchronous Transfer Mode) environments. The simulation results show that it is feasible to code color image based on subband decomposition by QMF designed and good performance can be achieved.

Key words: Subband Decomposition, Color Image, QMF