Method of vehicle image comparison and system thereof

A computerized system of vehicle image comparison, the system comprising a processor and memory circuitry (PMC) operatively connected to an I/O interface, wherein:

• the I/O interface is configured to obtain an input image acquired by an imaging device capturing at least part of a vehicle;
• and
• the PMC is configured to:
• segment the input image into one or more input segments corresponding to one or more mechanical components comprised in the at least part of the vehicle using a segmentation model;
• retrieve a set of reference images, wherein each reference image within the set comprises at least one reference segment corresponding to at least one input segment of the one or more input segments, thereby obtaining a respective set of corresponding reference segments for each input segment of the at least one input segment;
• and
• generate at least one difference map corresponding to the at least one input segment, comprising, for each given input segment:
• comparing the given input segment with each corresponding reference segment within the respective set of reference segments thereof using a comparison model, giving rise to a set of difference map candidates each indicating probability of presence of difference of interest (DOI) between the given input segment and the corresponding reference segment, the DOI representative of physical change of the vehicle;
• and
• providing a difference map corresponding to the given input segment according to probability of each difference map candidate in the set of difference map candidates, the difference map indicating probability of presence of DOI in the given input segment.

A non-transitory computer readable medium comprising instructions that, when executed by a computer, cause the computer to perform a method of vehicle image comparison, the method comprising:

• obtaining an input image capturing at least part of a vehicle;
• segmenting the input image into one or more input segments corresponding to one or more mechanical components comprised in the at least part of the vehicle using a segmentation model;
• retrieving a set of reference images, wherein each reference image within the set comprises at least one reference segment corresponding to at least one input segment of the one or more input segments, thereby obtaining a respective set of corresponding reference segments for each input segment of the at least one input segment;
• and
• generating at least one difference map corresponding to the at least one input segment, comprising, for each given input segment:
• comparing the given input segment with each corresponding reference segment within the respective set of reference segments thereof using a comparison model, giving rise to a set of difference map candidates each indicating probability of presence of difference of interest (DOI) between the given input segment and the corresponding reference segment, the DOI representative of physical change of the vehicle;
• and
• providing a difference map corresponding to the given input segment according to probability of each difference map candidate in the set of difference map candidates, the difference map indicating probability of presence of DOI in the given input segment.