Abstract: [Problem] To generate a highly realistic composite image. [Solution] This image-capturing system is provided with a camera (10) for capturing an image of a subject, a tracker (20) for detecting the position and orientation of the camera, a space image storage unit (30) in which an image of a three-dimensional virtual space is stored, and an image-forming unit (40) for generating a composite image in which an image of the subject captured using the camera and an image of the three-dimensional virtual space are combined. The image-forming unit (40) projects the three-dimensional virtual space specified by a world coordinate system (X, Y, Z) onto screen coordinates (U, V), in which the camera coordinate system (U, V, N) of the camera is taken as a reference, and combines the images of the three-dimensional virtual space and the subject on a screen specified by the screen coordinates (U, V).

Abstract: [Problem] The present invention is intended to provide a digital signage system which can measure depth of interest of customers and can perform sales promotion to the customers. [Method of settlement] The digital signage system of the present invention can measure depth of interest of customers, by which a database 22 memorizes an amount of time during which the customers have taken out a clothes hanger from a hanger tack and a time update section 24 updates this and accumulates them. Willingness of the customers to buy can be increased by analyzing clothing information which the customers have picked up and by displaying an image with respect to the clothing article on a monitor in the vicinity of the customers.