Abstract:
The present invention relates to a method for providing information on an object by using viewing frustums. The method includes the steps of: (a) specifying at least two viewing frustums whose vertexes are visual points of respective user terminals; and (b) calculating a degree of interest in the object by referring to the object commonly included in both a first viewing frustum whose vertex is a visual point of a first user terminal and a second one whose vertex is a visual point of a second user terminal.
Abstract:
Managing images in an image database is described, comprising: when a query image is input, performing a match to determine whether an image similar to the query image exists within the database by comparing the images stored in the database with the query image; and if the image similar to the query image is a recognized image, providing at least one image in an image group to which the recognized image belongs and information thereon as a result, and if the image similar to the query image is an unrecognized image, providing at least one image in an image group to which the unrecognized image belongs as a result. When at least one image of the image group including the image similar to the query image is a recognized image, information on the corresponding recognized image is assigned to the images in the image group and provided as a result.