We could simulate as well the effect of distortion over a point 
pattern. That will make us feel familiar to the resulting scheme 
of distortion with regard to the sign and magnitude of the 
parameters that come into play. 
.—4- ^ 
Fig. 12. Distorted grid and Ms-Excel ® Plot. 
With the same purpose of making further analysis easy, the user 
is allowed to copy any of the numerical results as single data o 
as tables as well, so that it can be, for instance, pasted in a 
worksheet. 
One of the goals of LDS is to allow us to test any set of 
parameters over an image to resample it and save as a new one 
showing the desired distortion, this feature will be useful to get 
ortho-scopic images (distortion free images) if the lens 
parameterisation is already known. 
Fig. 14. She again, (corrected picture) 
One more possible application of LDS could be the creation of 
pure distorted images from a virtual scene drafted within a 
CAD program, these images processed by LDS can emulate a 
perfectly distorted photograph, and thus serve as test-dummies 
for other photogrammetric software development (such as 
stereo digitizers) saved from errors derived from badly 
calibrated cameras. 
References. 
Bonneval, Henri. 1972. “Enregistrement photographique des 
gerbes perspectives”. Eyrolles Paris-France. 
Edward M. Mikhail, James S. Bethel, J. Chris McGlone, 2001. 
Introduction to Modem Photogrammetry. John Wiley and 
Sons, Inc. USA 
Ghosh, Sanjib K., 1979. “Analytical Photogrammetry”. 
Pergamon Press, USA. 
Hallert, Bertil. 1960. “Photogrammetry : basic principles and 
general survey”. Mac Graw-Hill, N Y-US A 
Moffit, F. H. & Mikhail, E. M., 1980. “Photogrammetry 
Harper & Row, NY-USA. 
Helmut Dersch. 2003. T. University Furtwangen “Panorama 
Tools”. Website http://www.fh-furtwangen.de/%7Edersch/