The present invention relates to a dual-
laser-
ranging-based passenger flow direction recognition method and
system. The method is as follows: obtaining a first
pedestrian characteristic passing through a detecting surface of a
laser detection device; obtaining a second
pedestrian characteristic passing through the detecting surface of the
laser detection device; successively matching
entry time and / or departure time, heights, widths and positions in the first
pedestrian characteristic and the second pedestrian characteristic, if the
entry time and / or departure time, the heights, the widths and the positions all are matched, determining that the first pedestrian characteristic and the second pedestrian characteristic is a same pedestrian; comparing the
entry time and / or departure time in the first pedestrian characteristic and the second pedestrian characteristic with one or more
time parameter in time for a highest point to pass through the detecting surface, and according to comparison results, recognizing the direction of travel of the pedestrian in a detection channel; and according to the direction of travel of each pedestrian, obtaining the passenger flow direction in the detection channel. The method uses two
laser scanning devices
ranging without tracing of pedestrians, improves the speed of statistics, and is applied to large passenger flow detection sites.