摘要
提出一种改进的规范块半范数算法,对图像分割策略、码本块抽样收缩方式及搜索最近意义父块方式进行改进,以缩小子块搜索其最佳匹配父块的范围,加快编码速度,提高匹配准确度和解码图像质量。实验结果表明,与基于规范块半范数的快速算法相比,该算法的编码时间更短。
An improved normalized block semi-norm algorithm is presented.The mode of sampling contraction for the codebook and search for the nearest farther block are improved.It can reduce the searching range of the matched block and improve the matched accuracy,and in order to improve the coding rate and decoding image quality.Experimental results show that the coding time of the improved algorithm is shorter than the fast algorithm based on normalized block semi-norm.
出处
《计算机工程》
CAS
CSCD
2012年第2期221-223,共3页
Computer Engineering
关键词
分形图像编码
人类视觉系统
四叉树分割
半范数
fractal image coding
Human Visual System（HVS）
quadtree partition
semi-norm
