1
Yuh Lin Chang, Wenjun Zeng: Method and apparatus for extracting indexing information from digital video data. Matsushita Electric Industrial, Harness Dickey & Pierce, October 27, 1998: US05828809 (106 worldwide citation)

A method and apparatus to automatically index the locations of specified events on a video tape. The events, for example, include touchdowns, fumbles and other football-related events. An index to the locations where these events occur are created by using both speech detection and video analysis al ...


2
Yuh Lin Chang, Yun Ting Lin: Apparatus and method for tracking deformable objects. Matsushita Electric Industrial, Harness Dickey & Pierce, December 7, 1999: US05999651 (36 worldwide citation)

A computer-implemented method and apparatus for tracking an image object within successive first and second image frames. The first frame has a first contour model which defines the image object within the first frame. The first contour model has a global motion parameter which defines global motion ...


3
Paul McAlpine, Olivier Lechnenne, Venkatesh Tumati Krishnan, Patrick Miauton, Remy Zimmermann, Yuh Lin Chang: Mechanical pan, tilt and zoom in a webcam. Logitech Europe, Kilpatrick Townsend & Stockton, March 29, 2011: US07917935 (3 worldwide citation)

A system and method for mechanically panning, tilting, and/or zooming a webcam to track a user's face. In one embodiment, such movement is controlled by kernel software in a host to which the webcam sends video data. In this way, a driver in the host kernel handles the face tracking, transparent to ...


4
Paul McAlpine, Olivier Lechnenne, Venkatesh Tumati Krishnan, Patrick Miauton, Remy Zimmermann, Yuh Lin Chang: Mechanical pan, tilt and zoom in a webcam. Logitech Europe, Townsend And Townsend And Crew, April 6, 2006: US20060075448-A1

A system and method for mechanically panning, tilting, and/or zooming a webcam to track a user's face. In one embodiment, such movement is controlled by kernel software in a host to which the webcam sends video data. In this way, a driver in the host kernel handles the face tracking, transparent to ...


5
Paul McAlpine, Olivier Lechnenne, Venkatesh Tumati Krishnan, Patrick Miauton, Remy Zimmermann, Yuh Lin Chang: Mechanical pan, tilt and zoom in a webcam. Logitech Europe, July 28, 2011: US20110181738-A1

A system and method for mechanically panning, tilting, and/or zooming a webcam to track a user's face. In one embodiment, such movement is controlled by kernel software in a host to which the webcam sends video data. In this way, a driver in the host kernel handles the face tracking, transparent to ...