The Designing of Quantization in the Transform Coding Compression System of 3D Hyperspectral Image Data
三维超光谱图象数据变换编码 压缩系统中量化器的设计

Quantization plays special important roles in image compressio n system,and its structure and parameters directly influence the quality of recons tructed image and the compression ratio.In our study of Compression System of 3D hyperspectral images,we have disigned two quantizationone as of 1-D arctangne t mapping quantization,the other as of 2-D image edge retaining quantization.Th e experiment results showed that mapping quantizing error in mapping quantizatio n was low and could better retain the edge feature in hyperspectral image.