<p>At least one zone (2) is monitored by capturing a current image (4) of the at least one zone (2), analysing the at least one current image (4) in order to derive current image data representative of the current image (4), comparing the current image data with historical image data representative of at least one corresponding previous image (6), and generating an alarm condition dependent on the result of the comparison.</p>
申请公布号
WO2004019616(A1)
申请公布日期
2004.03.04
申请号
WO2003GB03635
申请日期
2003.08.20
申请人
SCYRON LIMITED;FLOWERS, NICHOLAS, JOHN;MANSFIELD, RICHARD, LOUIS