SPECTRUM analysis of multispectral imagery in conjunction with wavelet/KLT data compression
The data analysis program, SPECTRUM, is used for fusion, visualization, and classification of multi-spectral imagery. The raw data used in this study is Landsat Thematic Mapper (TM) 7-channel imagery, with 8 bits of dynamic range per channel. To facilitate data transmission and storage, a compression algorithm is proposed based on spatial wavelet transform coding and KLT decomposition of interchannel spectral vectors, followed by adaptive optimal multiband scalar quantization. The performance of SPECTRUM clustering and visualization is evaluated on compressed multispectral data. 8-bit visualizations of 56-bit data show little visible distortion at 50:1 compression and graceful degradation at higher compression ratios. Two TM images were processed in this experiment: a 1024 x 1024-pixel scene of the region surrounding the Chernobyl power plant, taken a few months before the reactor malfunction, and a 2048 x 2048 image of Moscow and surrounding countryside.
- Research Organization:
- Los Alamos National Lab., NM (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 10107006
- Report Number(s):
- LA-UR--93-3951; CONF-9311135--2; ON: DE94003961
- Country of Publication:
- United States
- Language:
- English
Similar Records
Evaluation of SPOT imagery data
Remote sensing inland wetlands: a multispectral approach
Related Subjects
540250
58 GEOSCIENCES
580000
99 GENERAL AND MISCELLANEOUS
990200
ALGORITHMS
CHERNOBYLSK-4 REACTOR
COMPUTER CALCULATIONS
DATA ANALYSIS
DATA PROCESSING
GEOSCIENCES
LANDSAT SATELLITES
MATHEMATICS AND COMPUTERS
MULTISPECTRAL PHOTOGRAPHY
PERFORMANCE
REMOTE SENSING
RUSSIAN FEDERATION
S CODES
SITE RESOURCE AND USE STUDIES
UKRAINE