PolyU IR Collection: COMP Patents

Sequence online analytical processing system

Tue, 17 Apr 2012 00:00:00 GMT

Title: Sequence online analytical processing system

Authors: Lo, Eric; Kao, Benjamin Chi Ming; Ho, Wai-Shing; Chui, Chun-Kit; Lee, Sau-Dan

Abstract: A sequence online analytical processing (S-OLAP) system 50 for analysing an event database (41) storing events (12), the system (50) comprising: an S-OLAP engine (53) to compute an S-cuboid (49) for a query on the event database (41); a sequence query engine (54) to form part of the S-cuboid (49) by performing the steps of: selection, clustering, sequence formation and sequence grouping; a cuboid repository (52) to store computed S-cuboids (49) and to be searched by the S-OLAP engine (53) for an S-cuboid query to determine whether an S-cuboid has previously been computed; and a sequence cache (56) to cache constructed sequence groups.

Personal tracking device with low power consumption

Tue, 05 Jun 2012 00:00:00 GMT

Title: Personal tracking device with low power consumption

Authors: Chow, Martin H. L.; Chung, Ching-ching Jenny; Lai, Kam-yuk Claudia; Lee, Hor-yau Carrie; Ma, Kam Wah; Mak, Diana P. S.; Wai, Ping-kong Alexander; Mak, Arthur F. T.; You, Jane; Tong, Kai-yu Raymond; Zheng, Yong-Ping

Abstract: An portable tracking device integrating a mobile phone module (e.g. based on GSM or 3G networks), a GPS module, a radio Beacon and ultrasonic beacon. The tracking device is normally in a hibernated state when the entire device consumes little energy and require no periodically changing or recharging batteries to power the device. It consumes power from the primary battery only when a tracking process is actually taken place. With this portable tracking device on the person who is unable to affirmatively report his or her whereabout, the remote center and/or a search team can communicate the GPS module, radio beacon and ultrasonic beacon of the tracking device via the mobile phone module based on existing wireless communication technologies, such SMS, GPRS, ect, on GSM or 3 G networks, which also serves as a means of initial rough estimation of the tracking device's location.

Method and system for identifying a person using their finger-joint print

Tue, 26 Jun 2012 00:00:00 GMT

Title: Method and system for identifying a person using their finger-joint print

Authors: Zhang, Lei; Zhang, Lin; Zhu, Hailong; Zhang, David D.; Luo, Nan

Abstract: A method for identifying a person using their finger-joint print including the outer skin around the proximal interphalangeal joint of a finger, the method comprising: capturing (10) an image of the finger-joint print of the person; extracting (12) a region of interest (ROI) based on a local convexity property of the finger-joint print; extracting (13) features representing the orientation of the lines in a finger-joint print image from the ROI using an extended Gabor phase coding scheme and the extracted features are represented in competitive code maps; wherein angular distance between the competitive code maps is compared (14) with a reference set in a database to identify the person.

Method and apparatus for personal identification using palmprint and palm vein

Tue, 24 Jul 2012 00:00:00 GMT

Title: Method and apparatus for personal identification using palmprint and palm vein

Authors: Zhang, David D.; Lu, Guangming; Guo, Zhenhua; Luo, Nan

Abstract: A method of personal identification includes switching between visible and near infrared light, acquiring palmprint image and palm vein image from a person under the visible and the near infrared light, extracting sub-images from the palmprint image and the palm vein image based on a region of interest, extracting multiple features from the sub-images, and matching the extracted multiple features with stored information in a database to authenticate the person.