Automatic registration of images in digital terrain...

Communications: directive radio wave systems and devices (e.g. – With particular circuit – With recording

Reexamination Certificate

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Details

C342S02500R, C342S02500R, C342S190000, C342S195000, C342S063000, C342S064000, C342S357490, C342S357490, C382S209000, C382S224000, C382S228000, C382S278000

Reexamination Certificate

active

06853332

ABSTRACT:
A method of registering reconnaissance image data with map data is disclosed, comprising recording image data at a plurality of positions, together with the role, pitch and height above mean sea level data from an airborne navigation system and imaging system, and recording altitude of a reconnaissance craft from an altimeter; obtaining a difference between said recorded altitude data, and an altitude calculated from said navigation system data and a map data; selecting a difference data having a lowest standard deviation, and at a position of said selected difference data generating a three dimensional surface data using a bi-quadratic equation; generating a bi-quadratic surface of each of a plurality of positions for which data is recorded; generating a difference data between said bi-quadratic surface data, and height data obtained from said map, and minimising an error between bi-quadratic surface data and said height data by translating said position data relative to said map data, until minimum error is achieved; registering said image data with said map data after applying a said translation of said image data.

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