Adjustment of sensor geometry model parameters using digital ima

Details Adjustment of sensor geometry model parameters using digital ima Adjustment of sensor geometry model parameters using digital ima

1997-06-03

1999-11-30

Boudreau, Leo H.

Image analysis

Image transformation or preprocessing

Changing the image coordinates

382109, 382291, 382294, 382295, 356 302, 356 306, 356 308, 35613903, 35613904, 35613908, G06K 932, G01C 300

Patent

active

059956810

ABSTRACT:
A digital image processing system reduces errors in the parameters of a sensor geometry model, through which points in a captured digital image are geolocated to the surface of the earth by means of a `real time` co-registration mechanism that refines the geometry model associated with the working image in a matter of seconds. Using a co-registration mechanism such as that described in the U.S. Pat. No. 5,550,937, the system co-registers the reduced accuracy working digital image with a reference image, geographical spatial locations of respective pixels of which have been previously determined with a high degree of accuracy. The imagery co-registration operator adjusts the respective geometry models associated with its input images, in accordance with differences in cross-correlations of the respectively different spatial resolution versions of the two images, so as to bring the respective images into effective co-registration on image registration surface. Mutual registration on the image registration surface of the working and reference images reduces the parameter errors in the original working image's sensor geometry model to the same error resolution of the reference image's geometry model.

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patent: 5550937 (1996-08-01), Bell et al.
patent: 5640468 (1997-06-01), Hsu
patent: 5652717 (1997-07-01), Miller et al.

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