TY - GEN
T1 - Registration of joint geometric and radiometric image deformations
AU - Kovalsky, Shahar Z.
AU - Hagege, Rami
AU - Francos, Joseph M.
PY - 2007/12/1
Y1 - 2007/12/1
N2 - We consider the problem of object registration where the observation and template differ both geometrically and radiometrically. The type of radiometric deformations we consider falls into the general framework of color constancy, and the geometric deformations are affine. Since the registration procedure employs the intensity information in both the template and observation, a solution to the color constancy problemhave to be established jointly with a solution to the problem of estimating the geometric transformation. We show that the original high-dimensional nonconvex search problem, that needs to be solved in order to register the observation to the template, can be replaced by an equivalent problem, expressed in terms of a sequence of two linear systems of equations. A solution to this sequence provides an exact solution to the registration problem.
AB - We consider the problem of object registration where the observation and template differ both geometrically and radiometrically. The type of radiometric deformations we consider falls into the general framework of color constancy, and the geometric deformations are affine. Since the registration procedure employs the intensity information in both the template and observation, a solution to the color constancy problemhave to be established jointly with a solution to the problem of estimating the geometric transformation. We show that the original high-dimensional nonconvex search problem, that needs to be solved in order to register the observation to the template, can be replaced by an equivalent problem, expressed in terms of a sequence of two linear systems of equations. A solution to this sequence provides an exact solution to the registration problem.
KW - Computer vision
KW - Image registration
KW - Multidimensional signal processing
KW - Nonlinear parameter estimation
UR - http://www.scopus.com/inward/record.url?scp=56149096569&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:56149096569
SN - 9780889866751
T3 - Proceedings of the 9th IASTED International Conference on Signal and Image Processing, SIP 2007
SP - 496
EP - 499
BT - Proceedings of the 9th IASTED International Conference on Signal and Image Processing, SIP 2007
T2 - 9th IASTED International Conference on Signal and Image Processing, SIP 2007
Y2 - 20 August 2007 through 22 August 2007
ER -