As of version 4.1 of the Developer Toolbox, we have created the "Gold Medal" award for most outstanding contribution to the DT. For this go'round, we are extremely proud to have a sampling of satellite image data of Earth which has been processed by WorldSat International, in Ontario, Canada. The methods used to create the four files included are described in detail in the data/images/WorldSat/README file. Three rgb SGI image files were created from these tif files with the toolbox/src/haeberli/imgtools/fromtiff program and then zoomed down to 512x256 and 256x256 sizes with toolbox/src/haeberli/imgtools/izoom, to provide sample ready-to-go texture maps.It is hoped other developers will recognize the benefits of participating in such an exchange of information by considering potential contributions they might make to the Developer Toolbox. At this time, the "panel of judges" consist solely of the toolbox janitor and his sidekick piano. Criteria for what constitutes "the most outstanding contribution" are various and fluid, determined solely by the janitor. But, what *is* certain is that unusual and innovative data files, utilities, and/or source implementations, are given special consideration and attention. Please contact the DTjanitor@sgi.com, if you would like to explore the possibilities of submitting a contribution for consideration in the next Toolbox. The bottom line is, if you've created something you think might be potentially useful for anyone else, and would like to give it wider play, the janitor wants to "hear" from you.
a bit of extra information on this directory's image files and their content:Earth.tif (2615x1308 pixels, 4375830 bytes ) depicting the Earth at 18km per pixel resolution.
WorldSat's new 1km cloud-free mosaic of earth, currently in production, will be 40,079.88 pixels by 20,039.94 lines (pixels), presented in an equirectangular projection having 111.333 pixels per degree. For those concerned about disk space, the new scene at 24-bit resolution will require 2.4 gigabytes of disk space. At 1km resolution, distinguishing features such as contrails from jet aircraft, cities, and several man-made features can clearly be seen.
Image processing by Jim Knighton and Robert Stacey.
Copyright, WorldSat International Inc., 1993.
Mississauga, Ontario, CanadaAll Rights Reserved.
For information regarding licensing of these or their full resolution counterparts, contact WorldSat International at (905) 795-0110, or visit http://www.worldsat.ca/
% ../../../src/haeberli/libtiff/tools/tiffinfo *.tif Atlantic_Basin.tif: Subfile Type: (0 = 0x0) Image Width: 1080 Image Length: 1080 Resolution: 72, 72 pixels/inch Bits/Sample: 8 Compression Scheme: Lempel-Ziv & Welch encoding Photometric Interpretation: RGB color Predictor: horizontal differencing Samples/Pixel: 3 Rows/Strip: 2 Planar Configuration: single image plane Bathy.tif: Subfile Type: (0 = 0x0) Image Width: 2160 Image Length: 1080 Resolution: 72, 72 pixels/inch Bits/Sample: 8 Compression Scheme: Lempel-Ziv & Welch encoding Photometric Interpretation: RGB color Predictor: horizontal differencing Samples/Pixel: 3 Rows/Strip: 1 Planar Configuration: single image plane Earth.tif: Subfile Type: (0 = 0x0) Image Width: 2615 Image Length: 1308 Resolution: 72, 72 pixels/inch Bits/Sample: 8 Compression Scheme: Lempel-Ziv & Welch encoding Photometric Interpretation: RGB color Predictor: horizontal differencing Samples/Pixel: 3 Rows/Strip: 1 Planar Configuration: single image plane Pacific_Basin.tif: Subfile Type: (0 = 0x0) Image Width: 1080 Image Length: 1250 Resolution: 72, 72 pixels/inch Bits/Sample: 8 Compression Scheme: Lempel-Ziv & Welch encoding Photometric Interpretation: RGB color Predictor: horizontal differencing Samples/Pixel: 3 Rows/Strip: 2 Planar Configuration: single image plane % istat *.rgb xsize ysize zsize min max bpp type storage name 512 512 3 0 255 1 NORMAL rle Atlantic_Basin.rgb 512 256 3 14 255 1 NORMAL rle Bathy.rgb 512 256 3 0 255 1 NORMAL rle Earth.rgb