Abstract: The present invention discloses a navigation device and the alerting method thereof.

Abstract: The present invention is directed to a method for integrating road names recorded in a source data, particularly comprising steps of merging all interconnected segments having this road name into a user road group and merging these user road groups if they belongs to the same physical road entity. The present invention also relates to a method for integrating points of interest recorded in a source data, particularly comprising steps of, beginning from node with highest priority in the tree to the other nodes one at a time, finding nodes with same point of interest to redirect all child links of lower priority node to higher priority node among the same point of interest nodes and delete link between the same point of interest nodes; creating geometry relationship based on above new arrangement.

Abstract: The present invention discloses a navigation device and the alerting method thereof.

Abstract: A method of using road signs to augment Global Positioning System (GPS) coordinate data for calculating a current position of a personal navigation device includes obtaining recent GPS coordinate data with the personal navigation device, obtaining an image from a camera of the personal navigation device, the image showing areas surrounding a road on which the personal navigation device is traveling, recognizing a sign in the image by performing image processing on the image, and using a known position of the sign to augment the recent GPS coordinate data in order to more precisely determine an actual location of the personal navigation device.

Abstract: The present invention is directed to a method for integrating road names recorded in a source data, particularly comprising steps of merging all interconnected segments having this road name into a user road group and merging these user road groups if they belongs to the same physical road entity. The present invention also relates to a method for integrating points of interest recorded in a source data, particularly comprising steps of, beginning from node with highest priority in the tree to the other nodes one at a time, finding nodes with same point of interest to redirect all child links of lower priority node to higher priority node among the same point of interest nodes and delete link between the same point of interest nodes; creating geometry relationship based on above new arrangement.

Abstract: A method of using road signs to augment Global Positioning System (GPS) coordinate data for calculating a current position of a personal navigation device includes obtaining recent GPS coordinate data with the personal navigation device, obtaining an image from a camera of the personal navigation device, the image showing areas surrounding a road on which the personal navigation device is traveling, recognizing a sign in the image by performing image processing on the image, and using a known position of the sign to augment the recent GPS coordinate data in order to more precisely determine an actual location of the personal navigation device.

Abstract: A method of automatically adding tags to photos based on content of the photos and geographical information about where the photo was taken includes taking a photo with a camera of a personal navigation device, generating a geographical tag for the photo with the personal navigation device and attaching the geographical tag to the photo to generate a geotagged photo, transferring the geotagged photo to an optical character recognition (OCR) server, performing OCR on the geotagged photo with the OCR server and generating image description tags from text recognized in the geotagged photo, attaching selected tags to the geotagged photo, the selected tags being selected from the generated image description tags, and uploading the geotagged photo along with the attached selected tags to a photo sharing server, photos on the server being searchable by geographical tags or selected tags associated with the photos.