Distance measurement device, radiography system, operation method of distance measurement device, and operation program

An operation method of a distance measurement device provided with a ToF type distance measurement camera that measures a distance to a measurement object and a distance to a reference object of which the distance is known, and a detection sensor that detects a position of the distance measurement camera with respect to the reference object,

• wherein a processor executes processing including:
• obtaining a known distance from the distance measurement camera to the reference object by using a detection value detected by the detection sensor,
• calculating a correction coefficient on the basis of a first measurement value that is a measurement value of a distance from the distance measurement camera to the reference object obtained by the distance measurement camera and the known distance, and
• correcting a second measurement value that is a measurement value of a distance from the distance measurement camera to the measurement object obtained by the distance measurement camera or a calculation value calculated using the second measurement value.

A non-transitory computer-readable storage medium storing an operation program for operating a distance measurement device including a ToF type distance measurement camera that measures a distance to a measurement object and a distance to a reference object of which the distance is known, and including a detection sensor that detects a position of the distance measurement camera with respect to the reference object, the operation program causing a processor to execute processing including:

• obtaining a known distance from the distance measurement camera to the reference object by using a detection value detected by the detection sensor,
• calculating a correction coefficient on the basis of a first measurement value that is a measurement value of a distance from the distance measurement camera to the reference object obtained by the distance measurement camera and the known distance;
• and
• correcting a second measurement value that is a measurement value of a distance from the distance measurement camera to the measurement object obtained by the distance measurement camera or a calculation value calculated using the second measurement value.