US 12,456,327 B2
Method for generating a palm image based on partial images of a palm
Guy Mabyalaht, Courbevoie (FR); and Laurent Kazdaghli, Courbevoie (FR)
Assigned to IDEMIA IDENTITY & SECURITY FRANCE, Courbevoie (FR)
Filed by IDEMIA IDENTITY & SECURITY FRANCE, Courbevoie (FR)
Filed on Apr. 28, 2023, as Appl. No. 18/308,973.
Claims priority of application No. 22 04184 (FR), filed on May 3, 2022.
Prior Publication US 2023/0360428 A1, Nov. 9, 2023
Int. Cl. G06V 40/12 (2022.01)
CPC G06V 40/1335 (2022.01) 11 Claims
OG exemplary drawing
 
1. A method for generating an image of a palm of an individual using a computer, based on a first partial image of a palm of the individual and on a second partial image of a palm of said individual comprising an overlapping zone overlapping with said first image, said method comprising:
detecting first characteristic points of the palm in the first image and second characteristic points of the palm in the second image, for a predetermined type of characteristic points;
generating a plurality of pairs of characteristic points by matching a plurality of first characteristic points with a plurality of second characteristic points in the overlapping zone;
computing an overall geometric transformation associated with said matching;
determining a local geometric transformation for each pair of points of the plurality of pairs of characteristic points; and
merging the first image and the second image into a merged image, as a function of the overall geometric transformation and of the local geometric transformations, with the palm image comprising the merged image.