Results 1 
2 of
2
Linear Pushbroom Cameras
 IEEE Transactions on Pattern Analysis and Machine Intelligence
, 1994
"... Modelling th# push broom sensors commonly used in satellite imagery is quite di#cult and computationally intensive due to th# complicated motion ofth# orbiting satellite with respect to th# rotating earth# In addition, th# math#46 tical model is quite complex, involving orbital dynamics, andh#(0k is ..."
Abstract

Cited by 140 (6 self)
 Add to MetaCart
Modelling th# push broom sensors commonly used in satellite imagery is quite di#cult and computationally intensive due to th# complicated motion ofth# orbiting satellite with respect to th# rotating earth# In addition, th# math#46 tical model is quite complex, involving orbital dynamics, andh#(0k is di#cult to analyze. Inth#A paper, a simplified model of apush broom sensor(th# linear push broom model) is introduced. Ith as th e advantage of computational simplicity wh#A9 atth# same time giving very accurate results compared with th# full orbitingpush broom model. Meth# ds are given for solving th# major standardph# togrammetric problems for th e linear push broom sensor. Simple noniterative solutions are given for th# following problems : computation of th# model parameters from groundcontrol points; determination of relative model parameters from image correspondences between two images; scene reconstruction given image correspondences and groundcontrol points. In addition, th# linearpush broom model leads toth#0 retical insigh ts th# t will be approximately valid for th# full model as well.Th# epipolar geometry of linear push broom cameras in investigated and sh own to be totally di#erent from th at of a perspective camera. Neverth eless, a matrix analogous to th e essential matrix of perspective cameras issh own to exist for linear push broom sensors. Fromth#0 it is sh# wn th# t a scene is determined up to an a#ne transformation from two viewswith linearpush broom cameras. Keywords :push broom sensor, satellite image, essential matrixph# togrammetry, camera model The research describ ed in this paper hasb een supportedb y DARPA Contract #MDA97291 C0053 1 Real Push broom sensors are commonly used in satellite cameras, notably th# SPOT satellite forth# generatio...
Camera Estimation for Orbiting Pushbrooms
 in Proc. Second Asian Conference on Computer Vision
, 1995
"... Several spaceborne cameras use pushbroom scanning to acquire imagery.Traditionally,modeling and analyzing these sensors has been computationally intensive due to the motion of the orbiting satellite with respect to the rotating earth, and the nonlinearity of the mathematical model involving orbit ..."
Abstract

Cited by 4 (3 self)
 Add to MetaCart
Several spaceborne cameras use pushbroom scanning to acquire imagery.Traditionally,modeling and analyzing these sensors has been computationally intensive due to the motion of the orbiting satellite with respect to the rotating earth, and the nonlinearity of the mathematical model involving orbital dynamics. A new technique for mapping a 3D point to its corresponding image pointthatleadstofastconvergence is described. Besides computational efficiency, experimental results also confirm the accuracy of the model in mapping 3D points to their corresponding 2D points.