Image processing apparatus, image processing method, and image processing program

An image processing method performed by an image processing apparatus comprising

• a processor, and
• a memory in which a plurality of images obtained by capturing images of a building and a three-dimensional model of the building are stored in association with each other,
• the image processing method causing the processor to perform a process including:
• a development step of developing the three-dimensional model into a two-dimensional image;
• an extraction step of extracting at least one of type of defect, number of defects, size of a defect, degree of a defect, and change of a defect over times as defect information of the building on the basis of the plurality of images;
• a mapping step of performing mapping of the defect information to the two-dimensional image;
• and
• an output step of outputting the two-dimensional image to which the mapping is performed,
• wherein the three-dimensional model is a three-dimensional surface model or a three-dimensional solid model,
• the processor is configured to perform the development by connecting or separating designated surfaces among surfaces constituting the three-dimensional surface model or the three-dimensional solid model along designated edges for a designated range of the three-dimensional surface model or the three-dimensional solid model, for a designated range of the three-dimensional surface model or the three-dimensional solid model, and
• the processor is configured to extract the defect information using a learning machine configured by machine learning, and
• the processor is configured to associate the three-dimensional model with an actual scale by performing a comparison with a member having known dimensions or analyzing an image of the building which shows a scaler having a known dimension installed on the building.