Image processing apparatus and image processing method for setting measuring point to calculate three-dimensional coordinates of subject image with high reliability

摘要

An image processing apparatus includes at least one circuit. The at least one circuit acquires a plurality of images, including at least a first image and a second image obtained by photographing a subject from different viewpoints, acquires an instruction from a user, sets on the first image a measurement point for which three-dimensional coordinates of the subject are required, based on the instruction, calculates a correspondence point which is on the second image and which corresponds to the measurement point, by matching, calculates a reliability of the matching between the measurement point and the correspondence point as a measurement point reliability, and sets on the first image an alternative measurement point enabling a reliability higher than that of the measurement point reliability, instead of the measurement point, if the measurement point reliability is less than a predetermined threshold value.