Patent ID: 6281931
Filing Date: 2001-08-28
Classification: H04N

Abstract:
A geometric distortion correction system in an electronic imaging system for generating geometric distortion-corrected images comprising:(a) a geometric distortion measurement means for determining a geometric distortion mapping of said electronic imaging system;(b) an associative memory means for maintaining the information of a sample of geometric distortion mapping of said electronic imaging system;(c) a geometric remapping means coupled to said associative memory means for receiving the information of the stored sample of the geometric distortion mapping, and for generating an actual sensor registration location for each pixel location of an image detector array of said electronic imaging system; and(d) an intensity remapping means coupled to the image detector array of said electronic imaging system and said geometric remapping means, for receiving intensity arrays from the image detector array and said actual sensor registration location from said geometric remapping means for each pixel location, and for providing geometric distortion corrected intensity arrays to a memory buffer of the electronic imaging system,wherein said geometric distortion measurement means further comprising(a1) a light source connected to an electrical source for providing light signals;(a2) collimator means for receiving said light signals from said light source, and for providing distant images of said light signals;(a3) two-dimensional beam steering means for receiving said distant images of said light signals, and for providing distant images of said light signals with oblique angles; and(a4) geometric distortion measurement control means coupled to said electronic imaging system and said two-dimensional beam steering means for receiving sensor array response signal patterns from said electronic imaging system, and for providing steering command signal to said two-dimensional beam steering means, and for providing said associative memory means of said geometric distortion correction system the sample of geometric distortion mapping of said electronic imaging system.