International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part BS. Istanbul 2004
of rotating angle and translation value ( AZ ) in direction Z.
As alternative, the error value was obtained indirectly from the
mean shifting errors in the direction X and Y. on the other hand,
the rotating angle and AZ are approximately zero because the
object undergoes an approximate rectilineal moving in plane
XY. This phenomenon is verified approximately by the
experimental results of . (0. K . Concluded from each
step of the experiment, there are following aspects that take
responsibilit of the error source between calculated values and
true values in the process of estimating the entire movement
parameters:
(D The measuring precise of object space coordinates and
corresponding image coordinates. The coefficient L, obtained
from calculation has errors if the error exists in either object
coordinates or corresponding image point coordinates because
DLT reflects the translation relationship between object
coordinate and corresponding image point coordinates.
(2)The accuracy of stereo and sequence (moving ) matching is
the crisis of the experiment. The error matching is inevitable in
the process of matching. The strict correspondence of random
feature points in object before and after is required in three-
dimensional movement parameter that is based on point feature.
In the present study, photogrammetry is combined effectively
with computer vision. As a result, the methods and procedures
is obtained to determine the parameters of object movement
from the binocular stereo sequence images pair of moving
object. Therefore, the solution of correspondence of three-
dimensional feature point of moving object is obtained
effectively. The future direction is to predict and estimate the
moving object based on the current existing achievements in
order to achieve the goal tracking determination.
REFERENCES
l.Z.Zhang, R.Derche, O.Faugeras and Q.T.Luong,A robust
technique for matching two uncalibrated images through the
recovery of the unknown epipolar geometry[J].Artificial
Intelligence 1995,78(1-2): 87-119.
2.Aggarwal J K,Nandhakummar N.On the computation of
motion from sequences of images: a review. In Proc.IEEE,
1988,76(8): 917-935.
3.Xu Wenli, Liu Wenhuang Estimation motion parameters from
position vectors of feature points. ACTA Automatica Sinica
Vol.18.No.4, July, 1992:440-447
Project supported by the National Science Foundation of China
(No.40171080)
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