Lets conclude the discussion on laser image scanning with a brief 
mention of its real-time display potentials. The laser Scanning technique is 
blessed with an abundance of power which, when focused to a diffraction limited 
Spot, provides a power density level that is difficult to conceive in comparison 
to CRT power levels. This power density permits Scanning and recording at the 
high signal-to-noise levels necessary for producing the wide dynamic range re- 
quired in handling aerial reconnaissance imagery. This tremendous power also 
permits the output image to be displayed directly onto a display screen for 
immediate viewing. All the flexibility of closed circuit television is pro- 
vided but at image qualities compatible with the input imagery. Also, the 
high power density of the laser recording system permits its use with the so 
called "non-conventional'" film media that combine high resolution with rapid 
access. CBS Laboratories has successfully recorded high quality reconnaissance 
imagery on both free-radical film and dry silver film. These materials, which 
are generally insensitive to ambient light, are processed within seconds through 
the application of heat. Thus, the recorded image can be viewed almost 
immediately after it emerges from the recording gate with an image quality 
similar to that produced on conventional silver halide film. Needless to say, 
the time involved and the equipment required for conventional liquid processing 
are eliminated in such a recording system. 
Holography 
New developments in optical processing are also attracting a 
lot of attention lately because of their potential in a number of areas. 
Perhaps the most noteworthy, insofar as photo interpretation automation 
is concerned, is holography. In holography the light wave emanating from