Method for generating an image (if) of an entire 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 a zone overlapping with said first image, said method comprising: - a step of 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; - a pairing step 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; - a step of computing an overall geometric transformation associated with said matching, said overall geometric transformation comprising the following substeps: selecting a reference image from among the first image and the second image; determining the geometric transformation to be applied to all the pixels of the image that is not the reference image, so that the first image is superimposed on the second image in the overlapping zone, while minimizing an overall residual error; - a step of determining a local geometric transformation (t12a-t12n) for each pair of points of the plurality of pairs of characteristic points, said local geometric transformation (t12a-t12n) being determined so as to minimize a local error; - a step of 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 (t12a-t12n), with the merged image being acquired by superimposing the reference image with the transform of the image other than the reference image by the overall geometric transformation and local geometric transformations (t12a-t12n), with the palm image (if) comprising the merged image. - a step of 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; - a pairing step 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; - a step of computing an overall geometric transformation associated with said matching, said overall geometric transformation comprising the following substeps: selecting a reference image from among the first image and the second image; determining the geometric transformation to be applied to all the pixels of the image that is not the reference image, so that the first image is superimposed on the second image in the overlapping zone, while minimizing an overall residual error; selecting a reference image from among the first image and the second image; determining the geometric transformation to be applied to all the pixels of the image that is not the reference image, so that the first image is superimposed on the second image in the overlapping zone, while minimizing an overall residual error; - a step of determining a local geometric transformation (t12a-t12n) for each pair of points of the plurality of pairs of characteristic points, said local geometric transformation (t12a-t12n) being determined so as to minimize a local error; - a step of 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 (t12a-t12n), with the merged image being acquired by superimposing the reference image with the transform of the image other than the reference image by the overall geometric transformation and local geometric transformations (t12a-t12n), with the palm image (if) comprising the merged image.