G - Physics – 01 – C
Patent
G - Physics
01
C
G01C 11/02 (2006.01) G09B 9/30 (2006.01) G09B 29/00 (2006.01) H04N 13/00 (2006.01) G06T 15/10 (2006.01)
Patent
CA 2058877
AUTOMATED VIDEO IMAGERY DATABASE GENERATION USING PHOTOGRAMMETRY ABSTRACT A method for converting forward looking video or motion picture imagery into a downlooking database suitable for use in an image generation system to generate real- time perspective images for simulation purposes. A digital video camera photographs a sequence of forward looking frames along a course including several known groundcontrol points. Digital data from the digital video camera is read into a computer. The initial position and the position of ground control points is read into the computer. A Kalman filter technique provides continuous estimates of exact camera location in x, y, z coordinates, and in roll, pitch and yaw orientation. A correlation filter determines corresponding pixels in adjacent frames. Range from the camera to the pixel surfaces is calculated to determine the x, y and z position thereof. A modified mathematical ster- eophotogrammetry technique is used. Radiometric data and elevation data is extracted from the lower portion of the frame for each pixel. After the radiometric and elevation data have been established for each pixel in each frame, the imagery is warped onto the elevation data to generate a top down view. The database is then ready for use in an image generation system.
Hughes Simulation Systems Inc.
Plunk Gerald W.
Sim & Mcburney
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