Image matching device and image matching method

An image matching method, comprising:

• obtaining, by a 3D scanner, a first dorsal surface scan image by three-dimensionally scanning a dorsal surface of a patient supported on a surgery table in a first posture;
• obtaining position and posture information of a reference marker provided on a body of the patient and position and posture information of a scanner marker provided on the 3D scanner;
• generating a virtual first vertebrae measurement image for estimation of a position of a vertebrae of the patient based on a human body correlation model on a correlation between the dorsal surface and the vertebrae of the patient and the first dorsal surface scan image;
• and
• matching a coordinate system of the virtual first vertebrae measurement image with a coordinate system of the patient based on the position and posture information of the reference marker and the position and posture information of the scanner marker.

A non-transitory computer-readable recording medium storing a program to be executed on a computer, the program including executable commands for, when executed by a processor, causing the processor to perform:

• obtaining a first dorsal surface scan image by causing a 3D scanner to three-dimensionally scan a dorsal surface of a patient supported on a surgery table in a first posture;
• obtaining position and posture information of a reference marker provided on a body of the patient and position and posture information of a scanner marker provided on the 3D scanner;
• generating a virtual first vertebrae measurement image for estimation of a position of a vertebrae of the patient based on a human body correlation model on a correlation between the dorsal surface and the vertebrae of the patient and the first dorsal surface scan image;
• and
• matching a coordinate system of the virtual first vertebrae measurement image with a coordinate system of the patient based on the position and posture information of the reference marker and the position and posture information of the scanner marker.