United States Patent p9j
Abe
[54] APPARATUS FOR
EXTRACTING/COMBINING CHANGE
REGION IN IMAGE CORRESPONDING TO
MOVING OBJECT
[75] Inventor: Shozo Abe, Kawasaki, Japan
[73] Assignee: Kabushiki Kaisha Toshiba, Kawasaki, Japan
[21] Appl. No.: 544,588
[22] Filed: Jun. 27, 1990
[30] Foreign Application Priority Data
Jun. 30, 1989 [JP] Japan 1-169644
[51] Int. Cl.s H04N 7/18
[52] U.S. CI 558/108; 358/105
[58] Field of Search 358/105, 108, 136, 167,
358/36
[56] References Cited
U.S. PATENT DOCUMENTS
4,694.329 9/1987 Belmares-Sarabin et al 358/105
4,703.347 10/1987 Yasuda et al 358/105
4,737.847 4/1988 Araki et al •. 358/105
4,783,833 11/1988 Kawabata et al 358/105
4,807.034 2/1989 Takeuchi et al 358/105
4,908.704 3/1990 Fujioka et al 358/105
US0O5099324A
Patent Number: 5,099,324 [45] Date of Patent: Mar. 24, 1992
4,951.137 8/1990 Kisou et al 358/105
4,959,714 9/1990 Lo et al 358/105
FOREIGN PATENT DOCUMENTS
0169888 7/1988 Japan .
0051889 3/1987 Japan .
0245891 10/1987 Japan .
0260787 11/1986 Japan .
Primary Examiner—James J. Groody
Assistant Examiner—Michael H. Lee
Attorney, Agent, or Firm—Obion, Spivak, McClelland,
Maier & Neustadt
[57] ABSTRACT
An area to be monitored is picked up by a TV camera, and data of the picked-up image is converted into digital data in units of frames and stored in frame memories. The image data stored in the frame memories are read out, and a change region is extracted as an image of a moving object. The extracted moving object image has a plurality of dispersed regions including a shadow image. Only the dispersed regions corresponding to the moving object are extracted by setting a frame, and a noise image including the shadow image is removed.
20 Claims, 4 Drawing Sheets
