PHOTOGRAMMETRIC ENGINEERING 
19 
Fig. 18. Photograph produced by Xerography process. 
for special purposes. Camouflage detection film is an example. One layer is 
infrared sensitive and dyed in one color; the other layer or layers is sensitive in 
the visual region and dyed in another color. Any green non-chlorophyl material 
which is not highly I.R. reflective appears as green against a red background. 
As a summary of the activities in terms of present objectives the goals are: 
1. To develop practical methods of increasing photo-sensitivity chemically 
or electronically. 
2. To increase the interpretability of aerial photography by improving the 
resolution or the contrast rendition. That is, increase the information content 
of photographic message. 
3. To bring combat performance of the photographic process closer to the 
laboratory performance. 
4. To provide more efficient, cheaper, lighter weight, more dependable, 
photographic equipment. 
5. To develop better and cheaper methods of manufacturing and testing 
photo materials and supplies.