Accession Number : ADA326106
Title : Conjugate Gradient Schemes for Motion Estimation in Image Sequences,
Corporate Author : FYSISCH EN ELEKTRONISCH LAB TNO THE HAGUE (NETHERLANDS)
Personal Author(s) : Berkhoff, A. P.
PDF Url : ADA326106
Report Date : FEB 1997
Pagination or Media Count : 29
Abstract : This report describes methods for the estimation of local motion in a sequence of images. The methods are based on a global minimization of a relevant error criterion using a conjugate gradient technique. The expansion of the displacement field is carried out with the use of basis functions according to a Fourier transform or a cosine sine transform in space and time. These representations automatically result in a continuous displacement field where subpixel displacements can be detected. The error criterion can be based on a displacement vector for each pixel, but also on linearized versions in vectorial and scalar form, depending on the desired trade off between computation time and accuracy.
Descriptors : *IMAGE PROCESSING, *COMPUTER GRAPHICS, SIGNAL PROCESSING, FOURIER TRANSFORMATION, NETHERLANDS, OPTICAL IMAGES, IMAGE INTENSIFICATION, LEAST SQUARES METHOD, VECTOR ANALYSIS, PATTERN RECOGNITION, SCALAR FUNCTIONS, PIXELS.
Subject Categories : Cybernetics
Distribution Statement : APPROVED FOR PUBLIC RELEASE