A METHOD FOR DETERMINING A CORRESPONDENCE BETWEEN A SOURCE IMAGE AND A REFERENCE IMAGE

• Main Authors: MANSI, Tommaso, MAILHE, Boris, LIAO, Rui, MIAO, Shun
• Format: Patent
• Language: English; French; German
• Published: 30.12.2020
• Subjects: CALCULATING; COMPUTING; COUNTING; HANDLING RECORD CARRIERS; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; PHYSICS; PRESENTATION OF DATA; RECOGNITION OF DATA; RECORD CARRIERS

A computer-implemented method of determining a correspondence between a source image and a reference image includes holding, in a memory: a generative model corresponding to a prior probability distribution of deformation fields, each deformation field corresponding to a respective co-ordinate transformation; and a conditional model for generating a style transfer probability distribution of reference images, given a source image and a deformation field. The method includes receiving first image data comprising the source image, receiving second image data comprising the reference image, determining an initial first deformation field, anditeratively performing an update process, until convergence, to update the first deformation field, to generate a converged deformation field representing the correspondence between the source image and the reference image. The update process includes: determining a change in one or more characteristics of the first deformation field to increase a posterior probability density associated with the first deformation field, given the source image and reference image; and changing the one or more characteristics in accordance with the determined change. The posterior probability density is based on a prior probability density associated with the first deformation field, the prior probability density determined using the generative model, and also a style transfer probability density associated with the reference image, given the source image and the first deformation field, the style transfer probability density determined using the conditional model.