Thumbnail generator, thumbnail generation method, and thumbnail generation program

摘要

A thumbnail generating apparatus includes a moving image extracting portion, a reduction and enlargement ratio calculating portion and a reducing and enlarging unit. The moving image extracting portion extracts a moving image corresponding to a period shorter than a reproduction time of moving image based on the number and area of face detection regions obtained from face detection information generated by detecting a face of person included in the moving image. The reduction and enlargement ratio calculating portion integrates the face detection regions at intervals of certain time based on the face detection information of the moving image extracted by the moving image extracting portion, and calculates a reduction and enlargement ratio of the moving image based on the integration result such that a face of person included in the moving image extracted by the moving image extracting portion is largely displayed. The reducing and enlarging unit reduces or enlarges the moving image extracted by the moving image extracting portion based on the reduction and enlargement ratio calculated by the reduction and enlargement ratio calculating portion to generate a moving image thumbnail