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Image Stitching to Increase FOVWhile it is possible to convert from a rectilinear image to any other image format, for FOVs greater than 120° it is best to stitch two source images together to produce the final image. This is a relatively simple process for still images, even with Terragen. For animations, however, there are a few other practical issues to consider.
For an example I will go through the process for a 180° wide cylnidrical projection animation. Setting multiple camera anglesEach camera angle requires its own script, using identical X,Y,Z values for the camera position. None of the script creating utilities currently support this so an alternative solution is required. I chose to import the script created by Terranim/Campath into Filemaker Pro so that I could also incorporate it into my command line rendering solution for morphed TGWs. Rather than calculate a new tarpos for each camera angle it would be simpler to convert the entire script command to camstate. i.e. CamX,CamY,CamZ,CamH,CamP,CamB,Exp,Zoom. With CamP and CamB = 0 it's quite easy to calculate multiple camera angles, but things get very complicated once you stray from this situation. |
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This page, its contents and style, are the responsibility of the author and do not represent the views, policies or opinions of The University of Melbourne. All photographs © Ben Kreunen 2000 Ben Kreunen <bernardk@unimelb.edu.au> |