Machine learning model for analysis of 2D images depicting a 3D object

摘要

There is provided a method for unsupervised training of a machine learning model, comprising: receiving 3D images depicting a respective object, for each respective 3D image: dividing the 3D image into 3D patches, computing a first 2D image corresponding to a first orientation of the respective object, computing a second 2D image corresponding to a second orientation, automatically labelling pairs of 2D patches from the first and second 2D images with a patch measure indicative of likelihood of a certain 3D patch of the 3D image corresponding to a certain pair of 2D patches, training the ML model using a training dataset including the labelled patch pairs, for receiving patches extracted from first and second 2D images captured by an imaging sensor at the first and second orientations, and outputting an indication of likelihood of a visual finding in a 3D region of the object corresponding to the 2D patches.