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 -