EO-1 Hyperion EO-1 Hyperion browse is generated using bands 40, 31 and 13 for the red, green and blue components, respectively. Each band is contrast stretched between the 1% and 97% histogram values, re-scaled from to 8-bit data, reduced by a factor of 25% with pnmscale and JPEG compressed with a quality of 75. Prior to April 29, 2004, the Hyperion browse was a monochrome image generated from band 40 (with all other processing parameters as above). Table 1: Summary of existing browse strategies by dataset Data Original Reduction Data Metadata (see Typical On-line Method Dataset Sample .) Size Storage Data AVHRR 3480/3490 Subsampled GLIS browse 408 x 320,066 files tape 4th line, 5th header in JPEG 1000 x 1 22.73 GB sample comment 75 KB Single band Day=2, night=4 3480/3490 JPEG 75% tape Landsat HDT/DCT Subsampled GLIS browse 400 x 644,275 files MSS MSS A 6th header in JPEG 400 x 3 24.09 GB line/8th comment 40 KB sample MSS P 8th line/8th sample Bands 7, 5, 4 Contrast stretched Color composite 3480/3490 JPEG 75% tape
EO-1 Hyperion EO-1 Hyperion browse is generated using bands 40, 31 and 13 for the red, green and blue components, respectively. Each band is contrast stretched between the 1% and 97% histogram values, re-scaled from to 8-bit data, reduced by a factor of 25% with pnmscale and JPEG compressed with a quality of 75. Prior to April 29, 2004, the Hyperion browse was a monochrome image generated from band 40 (with all other processing parameters as above). Table 1: Summary of existing browse strategies by dataset Dataset Original Data Data Reduction Method Metadata (see .) Typical Size On-line Storage Sample Data AVHRR 3480/3490 tape Subsampled 4th line, 5th sample Single band Day=2, night=4 GLIS browse header in JPEG comment 408 x 1000 x 1 75 KB 320,066 files 22.73 GB 3480/3490 tape JPEG 75% Landsat MSS HDT/DCT Subsampled MSS A 6th line/8th sample MSS P 8th line/8th sample Bands 7, 5, 4 Contrast stretched Color composite GLIS browse header in JPEG comment 400 x 400 x 3 40 KB 644,275 files 24.09 GB 3480/3490 tape JPEG 75%
WGISS_DSIG_Browse-Survey-1997-2010_Sep2011.docx