105 
PREPARATION OP SIMULATED COLOR ORTHOPHOTOQUADS 
Maurice G. Brumm 
National Mapping Division, U.S. Geological Survey 
567 National Center 
Reston, Virginia 22092 
BIOGRAPHICAL SKETCH 
Maurice G. Brumm is with the U.S. Geological Survey's 
Eastern Mapping Center. He is assigned to the Technology 
Office as a cartographer where he has been involved in 
the quality control operations of the orthophoto program. 
He attended York Junior College, York, Pennsylvania; 
University of Virginia extension center; George Washington 
University; and the United States Department of Agriculture 
Graduate School. 
ABSTRACT 
In response to a request of the U.S. Customs Service, the 
National Mapping Division of the U.S. Geological Survey 
planned and initiated the production of simulated (natu 
ral) color orthophotoquads of the United States/Mexico 
border. During the initial phase of the project, various 
photographic procedures were investigated in order to 
develop production standards for the color orthophoto 
quads produced from color-infrared transparencies. This 
paper presents the results of these investigations and 
recommends the types of film, rectification methods and 
production procedures that may be utilized to produce 
simulated color orthophotoquads. 
INTRODUCTION 
The advantages of using color-infrared (CIR) aerial pho 
tography for photoinspection have long been apparent. 
During the 1960's and early 1970's, procedures were 
developed for panchromatic monochrome imagery, involving 
a number of approaches to classification representation 
as well as reproduction and finishing methods (Clark and 
others, 1971)- However, only limited efforts have been 
made to exploit the CIR medium for false-color ortho- 
photography (orthophotoquads). Perhaps the reason for 
this was the lack of a viable method that could be cost 
effectively applied to large ground area coverage or the 
procedures were time consuming and lacked consistency. 
This report describes new procedures for preparing color 
orthophotoquads from CIR aerial film that overcomes many 
of these objectionable aspects.