Free mrsid download usgs map iso#

Image resolution is of sufficient quality to render all meaningful map details on screen and in print Format is 24 bit Tiff, uncompressed Tone/color reproduction: embedded ICC (International Color Consortium) profile with associated size and tone reference. The colorspace tag is used to assure that color and tonal information is properly displayed across multiple systems and media. Files were saved with an embedded profile. Master Image files were corrected and archived as TIFF files (compliant with the TIFF 6 Specification) in the sRGB IEC611966-2.1 color-space.

Free mrsid download usgs map iso#

Editing was performed in an ISO 3664 compliant proofing environment. Image files were viewed on a calibrated monitor. Color and tonal corrections were made using Curves, Levels, and Hue/Saturation filters in Adobe Photoshop. When possible files were batch processed using an 'action' script derived from edits applied to match a representative sample. Files were edited in and saved from Adobe Photoshop CS. The imaging specification was designed to produce detailed 'Archival Master' images that, to the extent possible, are faithful reproductions of the originals, and that allow for highly detailed screen reproduction and print reproduction at up to 1:1. A vacuum easel was used to keep the maps flat during photography. Production of this Digital Raster Graphic (DRG) began with the scanning of the paper 15-minute topographic map on a high-resolution scanner (Betterlight, Super8K2 scanning back camera and ViewFinder 5.x capture software). Process at Harvard Map Collection, Harvard College Library: