Title:
移動体追尾方法及びその装置
Document Type and Number:
Japanese Patent JP3603737
Kind Code:
B2
Abstract:
A moving object is detected by subtraction between successive frames produced by a video camera and a position and a size of the moving object are determined. Preceding and succeeding frames produced by the video camera are stored into respective memories and the panning, tilting and zooming functions of the video camera are controlled according to the determined position and size of the moving object. A motion compensation is performed on the preceding frame to compensate for a motion of background image caused by a tracking movement of the camera so that coordinates of the motion-compensated frame are transformed to coordinates of the succeeding frame. An image difference between the motion-compensated frame and the succeeding frame is extracted as a moving object and a position and a size of the extracted image are determined, with which the video camera is adaptively controlled.
Inventors:
Toshio Kamei
Application Number:
JP2000095375A
Publication Date:
December 22, 2004
Filing Date:
March 30, 2000
Export Citation:
Assignee:
NEC
International Classes:
H04N5/232; G06K9/00; G06T7/20; H04N5/225; H04N7/18; (IPC1-7): H04N5/232; H04N5/225; H04N7/18
Domestic Patent References:
| JP10079881A | ||||
| JP10091795A |
Attorney, Agent or Firm:
Kihei Watanabe