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NavigationCartography and Aerial Photography

Reproduction of Custom Colors for the Navy's Compressed Aeronautical Chart

Authors: Maura C Lohrenz; Stephanie A Myrick; Perry B Wischow; NAVAL RESEARCH LAB STENNIS SPACE CENTER MS OCEAN SCIENCES BRANCH
Abstract:
This paper presents a procedure that is used to reproduce custom colors on color hardcopy. The set of custom colors is comprised of red, green, and blue (RGB) intensities, where intensity levels range from 0 (no intensity) to 255 (maximum intensity). The hardcopy device that produced the results in this paper normally transforms RGB colors into cyan, magenta, yellow, and black (CMYK). However, adding black ink during the printing process tends to cause the loss of some low-intensity colors and an overall graying of the output image. This phenomenon has been termed color drop-out. The procedure described in this paper eliminates color drop-out in custom color reproduction by omitting black ink. This approach more accurately reproduced custom colors for the data set used in this study. Two other less successful methods also are presented.

Limitations: APPROVED FOR PUBLIC RELEASE
Description: Conference paper
Pages: 6
Report Date: Jan-1992
Report Number: A077852
Keywords relating to this report:
*Aeronautics
*CHARTS
*COLORS
*DIGITAL MAPS
*HARD COPY
*PRINTING
*REPRODUCTION_COPYING_
BLACK_COLOR_
BLUE_COLOR_
DATA BASES
DATA COMPRESSION
GREEN_COLOR_
LOW INTENSITY
NAVAL AVIATION
OPTICAL STORAGE
PIXELS
PRINTERS_DATA PROCESSING_
Red_Color_
SYMPOSIA
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