Abstract: An information displaying apparatus is capable of providing an easy-to-see display of information that the user wants to know out of information related to objects seen in a captured real-world image. The information displaying apparatus comprises an image input unit for inputting a captured real-world image. A distance acquiring unit acquires the distance between an object seen in the input captured real-world image and a view point of the captured real-world image. An object superimposing unit outputs an image in which information related to the object is superimposed on the captured real-world image. An information output control unit controls the information output by the object superimposing unit. The information output control unit decides, in accordance with the acquired distance, how to present the information outputted by the object superimposing unit.

Abstract: An image processing device for displaying a planar map which can be easily viewed by a user without increasing the amount of processing. A planar map generating device (103) is provided with: an image acquisition section (301) for acquiring images wherein objects are imaged and the three-dimensional coordinates of the objects can be calculated; a coordinate acquisition section (302) for extracting the upper surface of a first object existing on a reference surface from the images to acquire the coordinates of the feature point of the extracted upper surface; and a first planar map generating section (303) for generating a first planar map by adjusting the size and position of the upper surface so that the values of the coordinates equivalent to the direction perpendicular to the reference surface become the same as those of the reference surface by using the acquired coordinates.

Abstract: A radio positioning system includes a plurality of base stations and a radio terminal. Each of the base stations includes a reference signal generating portion which generates a reference signal for positioning, a transmission portion which transmits the reference signal, a reception portion which receives a signal from its outside, a positioning portion which calculates a position relative to the radio terminal or base station as a signal sender based on the received signal, and a reference signal return portion which receives a reference signal transmitted from another base station and returns the reference signal to the another base station. The radio terminal includes a terminal reception portion which receives the reference signal, and a terminal transmission portion which returns the received reference signal.

Abstract: An image processing device for displaying a planar map which can be easily viewed by a user without increasing the amount of processing. A planar map generating device (103) is provided with: an image acquisition section (301) for acquiring images wherein objects are imaged and the three-dimensional coordinates of the objects can be calculated; a coordinate acquisition section (302) for extracting the upper surface of a first object existing on a reference surface from the images to acquire the coordinates of the feature point of the extracted upper surface; and a first planar map generating section (303) for generating a first planar map by adjusting the size and position of the upper surface so that the values of the coordinates equivalent to the direction perpendicular to the reference surface become the same as those of the reference surface by using the acquired coordinates.

Abstract: An information displaying apparatus capable of providing an easy-to-see display of information that the user wants to know out of information related to objects seen in a captured real-world image. The information displaying apparatus (100) comprises: an image input unit (300) for inputting a captured real-world image; a distance acquiring unit (650) for acquiring the distance between an object seen in the input captured real-world image and a view point of the captured real-world image; an object superimposing unit (710) for outputting an image in which information related to the object is superimposed on the captured real-world image; and an information output control unit (690) for controlling the information outputted by the object superimposing unit (710). The information output control unit (690) decides, in accordance with the acquired distance, how to present the information outputted by the object superimposing unit (710).

Abstract: A motion locus creation system which is capable of displaying the trajectory of movement of an object to be tracked in an understandable way even if using no 3D model information. A camera unit forms a detection flag indicating whether or not the object to be tracked has been able to be detected from a captured image. A motion locus-type selection section determines the display type of a motion locus according to the detection flag. A motion locus creation section produces a motion locus according to coordinate data acquired by a tag reader section and a motion locus-type instruction signal selected by the motion locus-type selection section.

Abstract: A radio positioning system includes a plurality of base stations and a radio terminal. Each of the base stations includes a reference signal generating portion which generates a reference signal for positioning, a transmission portion which transmits the reference signal, a reception portion which receives a signal from its outside, a positioning portion which calculates a position relative to the radio terminal or base station as a signal sender based on the received signal, and a reference signal return portion which receives a reference signal transmitted from another base station and returns the reference signal to the another base station. The radio terminal includes a terminal reception portion which receives the reference signal, and a terminal transmission portion which returns the received reference signal.

Abstract: There is provided a content use management method capable of preventing unauthorized distribution of a content and improving user-friendliness. In this method, the same group key is stored in a secure device (400) and a playback terminal (500). Moreover, a license issuing application is received from a license distribution server (200) and stored in the secure device (400). After this, a license encrypted by the group key is sent to the playback terminal (500) and the license encrypted by the group key is stored in the playback terminal (500). Upon playback of the encrypted content, the playback terminal (500) decrypts the license by using the group key and acquires the content decryption key, thereby decrypting the encrypted content. Even when the encrypted license flows into the network, it cannot be decrypted by a playback terminal not having the same group key and the copyright is protected.