Multiple description (MD) coding has many applications in transmission of images over unreliable packet or multiple path networks that can not guarantee lossless data delivery. In this paper, an effective multiple description image coding scheme is introduced. This scheme is mainly based on the wavelet transform and multiple description lattice vector quantization (MDLVQ). The haracteristics of wavelet coefficients in different frequency subbands are taken into account in the design of the MD image coder with different optimized MDLVQ parameters. The experimental results are presented to demonstrate the effectiveness of the proposed scheme.

分形图像编码是近几年发展起来的一种新的图像编码方法，目前对其研究较为广泛。本文介绍了分形图像压缩编码的数学原理、基本特性，着重介绍了当今这一领域的发展成果，比较了各种方案的优缺点，分析了目前编码方案所存在的缺点、原因及未来的发展方向。