(1) Exposure 
(2) Target detail and contrast 
(3) Granularity 
(4) Density range with maximum and minimum exposure, and log 
exposure data for obtaining absoute density exposure values. 
(5) MIF when operated on by the Fourier transforms 
(6) There is, of course, much additional specialized information 
available through the analysis of the micro-densitometer data. This may 
be selected as desired. 
These routine MTF tests and supplementary analyses have supported 
the quality functions by proving that quality systems have been procured 
and/or photographic performance is stable. The equipment and test 
techniques being at "the state-of-the-art" are also used for research 
studies. 
Imagery obtained by the Canadian Air Force with the Wild and 
Zeiss reseau cartographic cameras being used in the study conducted 
by the Commission I Working Group on Image Geometry, was analvzed 
by this facility. Detailed results are reported by Gliatti:? 
His finding are: "This (MIF) program would eliminate the expense 
of using man-made targets to provide a quantitative estimate of 
photo sensor system performance in areas where targets are not avail- 
able Often photographic sensor sytems are flown over areas where 
artificial ground targets (such as tri-bar or annulus types) are 
not available. MTF analysis provides the desired quantitative measure 
of system performance. 
The Edge Gradient Analysis (EGA) method for MTF evaluations 
of aerial photographs appears to be suited for routine analysis 
of aerial imagery. 
Lens MTF measurements on each camera were made independently 
by Rosenbruch, West Germany, and Martin, U. S. Air Force. Both 
cameras were measured at selected field angles and in both radial 
and tangential directions. Their results were reported at the 
Ottawa Seminar of Commission I Image Deformation Working Group in 
October 1975 and correlated well. Their data, therefore, presents 
the expected MIF's against which to compare the aerial system MTF. 
The resulting systems MIF's contain the cascading effects of 
(1) Micro-D MIF; (2) the film MTF; and (3) the frequency response 
of the smoothing filter. In order to compare the results to the 
laboratory measured lens MTF, these three effects were removed. 
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