The invention discloses a wavelet image encoding method, including: using wavelet coefficients corresponding to each sub structure with Pyramid by wavelet decomposition of the classification and encoding operation on wavelet coefficients classification has the corresponding execution, each subband compressed stream; according to each subband compression rate distortion characteristic the compressed stream, the target bit rate in each sub zone between the optimal allocation, on the basis of the subband rate is assigned to each sub-band stream truncation, obtained for encoding wavelet image coding. The invention also discloses a coding device for the wavelet image, and the method and the device can improve the error resilience capability of the encoded bitstream, and the bitstream supports decoding of a plurality of spatial resolutions.
【技术实现步骤摘要】
【技术保护点】
１．一种小波图像的编码方法，其特性在于，该方法包括：利用金字塔结构对经小波分解所得的各子带对应的小波系数进行分类，再对已分类的小波系数执行对应的编码操作，得到各子带的压缩码流；根据各子带压缩码流的率失真特性，将目标码率在各子带的压缩码流间进行最优分配，依据各子带被分配的码率对各子带的码流进行截断，得到对小波图像进行编码的码流。
【技术特征摘要】
【专利技术属性】
技术研发人员：左雯，王宁，于培松，郭秀江，卓力，田卫，李晓光，周真理，张菁，
申请(专利权)人：中兴通讯股份有限公司，
类型：发明
国别省市：94[中国|深圳]
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