An information processing device comprising: a damage extraction unit adapted to extract damage from an image of an inspection target structure; a damage information generation unit adapted to generate damage information including a set of one or more 2D vectors obtained by vectorizing the damage; a progress model acquisition unit adapted to acquire a progress model indicating a correspondence relationship between a damaged state of a model structure and a degree of damage that is an evaluation classification of a degree of damage progress, wherein a damaged state of a model structure is a geometrical description of a model structure damage; a damage analysis unit adapted to analyze at least the set of one or more 2D vectors in the damage information of the inspection target structure on the basis of the one or more damaged state indicated in the progress model and to determine the degree of damage of the inspection target structure corresponding to the damaged state of the inspection target structure; a database control unit adapted to store the degree of damage of the inspection target structure in a database; a damage progress speed acquisition unit adapted to acquire a damage progress speed of the inspection target structure by comparing a plurality of degrees of damage respectively acquired on the basis of a plurality of images with different inspection times of the inspection target structure, and wherein the database control unit is adapted to store the damage progress speed in the database in association with the damage information and the degree of damage, characterized in that the information processing device further comprises: a search unit adapted to search the database for similar damage information which is another damage information similar to the damage information of the inspection target structure, wherein, in a case where a degree of damage of the inspection target structure at a time earlier than the latest inspection time of the inspection target structure is not present in the database, the damage progress speed acquisition unit is adapted to estimate a damage progress speed of the inspection target structure using the damage progress speed stored in the database in association with the similar damage information. a damage extraction unit adapted to extract damage from an image of an inspection target structure; a damage information generation unit adapted to generate damage information including a set of one or more 2D vectors obtained by vectorizing the damage; a progress model acquisition unit adapted to acquire a progress model indicating a correspondence relationship between a damaged state of a model structure and a degree of damage that is an evaluation classification of a degree of damage progress, wherein a damaged state of a model structure is a geometrical description of a model structure damage; a damage analysis unit adapted to analyze at least the set of one or more 2D vectors in the damage information of the inspection target structure on the basis of the one or more damaged state indicated in the progress model and to determine the degree of damage of the inspection target structure corresponding to the damaged state of the inspection target structure; a database control unit adapted to store the degree of damage of the inspection target structure in a database; a damage progress speed acquisition unit adapted to acquire a damage progress speed of the inspection target structure by comparing a plurality of degrees of damage respectively acquired on the basis of a plurality of images with different inspection times of the inspection target structure, and wherein the database control unit is adapted to store the damage progress speed in the database in association with the damage information and the degree of damage, characterized in that the information processing device further comprises: a search unit adapted to search the database for similar damage information which is another damage information similar to the damage information of the inspection target structure, wherein, in a case where a degree of damage of the inspection target structure at a time earlier than the latest inspection time of the inspection target structure is not present in the database, the damage progress speed acquisition unit is adapted to estimate a damage progress speed of the inspection target structure using the damage progress speed stored in the database in association with the similar damage information. a search unit adapted to search the database for similar damage information which is another damage information similar to the damage information of the inspection target structure, wherein, in a case where a degree of damage of the inspection target structure at a time earlier than the latest inspection time of the inspection target structure is not present in the database, the damage progress speed acquisition unit is adapted to estimate a damage progress speed of the inspection target structure using the damage progress speed stored in the database in association with the similar damage information.