Proceedings Article | 11 January 2007
Proc. SPIE. 6279, 27th International Congress on High-Speed Photography and Photonics
KEYWORDS: Digital signal processing, Lithium, Radon, Detection and tracking algorithms, Data modeling, Cameras, Image processing, Analytical research, Geography, Ranging
It investigated in an image sequence procession algorithm for finding the distance from a moving target in space to the
mobile camera. Through 4-pairs points matching in adjacent image frame, the radial distance variation between adjacent
sampling times was calculated, with the target's azimuth, pitching, characteristic linearity and the space coordinate of the
camera jointed, a 4-order non-linearity equation was set up, distance from target to the camera at former time, i.e., the
only meaningful solution to the equation was solved, then obtained the distance from target to the camera at this time.
The ranging principle was explained, the ranging equation was deduced, the ranging error was analyzed, and the relative
measurement data and experiment results were given. It was suggested by our research that this algorithm could estimate
the distance from a moving target in space to the camera with only two image needed, an experiment was conducted to
illustrate the effectiveness and the validity of the algorithm. This scheme is valid to any rigid target in three-dimension
movement which could be superficially imaging and had a distance variation between adjacent sampling time meanwhile,
the algorithm can be realized with DSP and VLSI chips at 25 frame per second.
