Abstract: The invention concerns image data processing, through noise reduction comprising the following steps: associating a learning zone (ZA) with a reference point (Pref) of the image (IM); for each variable point (PC, PC?) of the learning zone, evaluating a distance (d,d?,) between: values of points in a first window (f1) of the image, centered on the reference point, and values of points in a second window (f2, f2,), of similar format as the format of the first window and centered on the variable point; repeating said distance calculation for all the points of the learning zone as successive variable points and estimating an average value to assign to the reference point, said average being weighted on the basis of the distances evaluated for each variable point.
Type:
Grant
Filed:
June 22, 2012
Date of Patent:
April 23, 2013
Assignees:
France/Ecole Normale Seperieure de Cachan, France and Universitat de les Illes Balears, Centre National de la Recherche Scientifique-CNRS
Inventors:
Jean-Michel Morel, Bartomeu Coll, Antonio Buades
Abstract: The invention concerns image data processing, through noise reduction comprising the following steps: associating a learning zone (ZA) with a reference point (Pref) of the image (IM); for each variable point (PC, PC?) of the learning zone, evaluating a distance (d,d?,) between: values of points in a first window (f1) of the image, centered on the reference point, and values of points in a second window (f2, f2,), of similar format as the format of the first window and centered on the variable point; repeating said distance calculation for all the points of the learning zone as successive variable points and estimating an average value to assign to the reference point, said average being weighted on the basis of the distances evaluated for each variable point.
Type:
Application
Filed:
June 22, 2012
Publication date:
October 25, 2012
Applicants:
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE-CNRS, FRANCE AND UNIVERSITAT DE LES ILLES BALEARS, FRANCE/ECOLE NORMALE SUPERIEURE DE CACHAN
Inventors:
Jean-Michel MOREL, Bartomeu COLL, Antonio BUADES
Abstract: The invention concerns image data processing, through noise reduction comprising the following steps: associating a learning zone (ZA) with a reference point (Pref) of the image (IM); for each variable point (PC, PC?,) of the learning zone, evaluating a distance (d, d?,) between: values of points in a first window (f1) of the image, centered on the reference point, and values of points in a second window (f2, f?2,), of similar format as the format of the first window and centered on the variable point; repeating said distance calculation for all the points of the learning zone as successive variable points and estimating an average value to assign to the reference point, said average being weighted on the basis of the distances evaluated for each variable point.
Type:
Grant
Filed:
April 13, 2005
Date of Patent:
August 28, 2012
Assignees:
France/Ecole Normale Superieure de Cachan, France and Universitat de les Illes Balears, Centre National de la Recherche Scientifique-CNRS
Inventors:
Jean-Michel Morel, Bartomeu Coll, Antonio Buades