Patent ID: 7516421
Filing Date: 2009-04-07
Classification: G06K,G06Q,G06T,G09B

Abstract:
1. An information presentation system, comprising: a plurality of known markers distributed in a specific district which is an object of the system; an image pickup device configured to photograph an image; a display device configured to display the image photographed by the image pickup device; a marker detection section configured to detect the known markers existing in the image photographed by the image pickup device; a position/orientation relation calculation section configured to indentify the known marker detected by the marker detection section to calculate position and orientation relations between the identified known marker and the image pickup device; an associated information obtaining section configured to obtain predetermined information associated with the known marker identified by the position/orientation relation calculation section; and an information processing section configured to process the predetermined information obtained by the associated information obtaining section based on the position and orientation relations calculated by the position/orientation relation calculation section, wherein the display device superimposes and displays the information processed by the information processing section on the image photographed by the image pickup device, wherein at least the image pickup device and display device are disposed in a portable information terminal, and the other sections are disposed in a server which performs radio communication with the portable information terminal, wherein the server is constituted such that the server handles a plurality of portable information terminals, and the associated information obtaining section functions as a density confirmation section with respect to each portable information terminal, which stores the order of a plurality of identified known markers and which calculates and stores a user's action route of the portable terminal from the stored order of the markers and an arranged position relation of the markers in the specific district and which confirms a density of all the users of the plurality of portable terminals in each division in the specific district at each time, wherein the associated information obtaining section includes a leading section configured to transmit information for arbitrarily promoting leading to a specific facility or division in the specific district to a user's portable information terminal positioned in a division having high density or an arbitrary portable information terminal, based on the confirmed density at a current time or in response to a manager's request of the server, and the portable information terminal displays the information in the display device, when the information promoting the leading is received.