摘要
根据SAR浮点图像数据、定值压缩和实时分块传送的要求,提出了基于空域点非线性预处理和DCT直流系数归一量化的压缩方法,实用效果非常明显.
According to the requirements of floating-point SAR images, compression in fixed ratio and transmission in sequential blocks, a method is proposed which is based on point nonlinear pretreatment in spatial domain and DC coefficient normalized quantization in DCT domain. The method achieves good practical effects.
出处
《江西理工大学学报》
CAS
2009年第4期33-36,共4页
Journal of Jiangxi University of Science and Technology
关键词
SAR
预处理
直流系数
浮点图像
数据压缩
SAR
pretreatment
DC coefficient
floating-point images
data compression
