A LECTURE CAMERA SYSTEM FOR PROVIDING IMAGES OF WRITINGS ON THE BOARD

摘要

PURPOSE: A lecture filming system capable of providing the image of writing on a board is provided to display writing on a board which an instructor just finishes after the instructor comes back to a lectern by filming and providing the changed part of filmed board images. CONSTITUTION: A tracking and detecting unit (10) tracks and detects an instructor location. If a platform sensor (70) detects an object in an idle state, a control unit (20) directs a first camera (31) to obtain a second image by filming a whole board and to film a changed part of the board based on comparison between the second image and a first image filmed previously. The control unit directs a second camera (32) to film the instructor location detected by the tracking and detecting unit. [Reference numerals] (10) Tracking and sensing unit; (20) Control unit