Binocular vision and laterally mounted video camera-based passenger flow counting method

Abstract

The invention relates to a binocular vision and laterally mounted video camera-based passenger flow counting method. The method comprises the following steps of: (1) acquiring left and right synchronous video image sequences by using left and right parallel and synchronous video cameras; pre-setting two mutually parallel rows of counting lines which are vertical to the walking direction in a video image picture; and pre-setting a parallax error on the two rows of the counting lines as a background parallax error; (2) calculating the parallax errors point by point on the dual-row counting lines; then respectively unfolding the two rows of parallax errors on a time axis to form double rows of parallax error time space diagrams; (3) extracting a foreground target based on the differential value between the parallax error of one counting line and the background parallax error so as to generate a dynamic parallax error time space diagram; (4) performing planar mapping on the foreground target to obtain the mapped image of the corresponding planar position, the grey of the mapped image corresponding to the height of the foreground target; (5) performing the region division, marking, matching and counting on the foreground target in the mapped image; and (6) repeating the steps (1) to (5) until the real-time passenger flow counting is finished. The method is suitable for the counting occasions, such as outdoor sidewalks, indoor gates with over-high roof and corridors, where the video cameras can only be mounted laterally; and the method has very high real-time performance and robustness.

Description

Technical field [0001] The invention relates to a passenger flow information collection, in particular to a passenger flow counting method based on binocular vision and side-mounted cameras. Background technique [0002] As the population grows and people travel frequently, there is a surging flow of people in all types of transportation systems, shopping malls, exhibition halls, airport terminals and other places. The collection of statistical data on these flows has gradually become more and more important. For example, for the transportation system, the number of passenger flows is the main basis for the public transportation management department to rationally arrange bus routes, optimize the dispatch of bus vehicles, and improve operational efficiency; for shopping malls, the number of passenger flows is related to the amount of economic benefits and service quality. Good or bad. Therefore, the research of automatic passenger flow data collection method has great practical ...

AI Technical Summary

Problems solved by technology

However, for occasions such as outdoor sidewalks, since the sidewalk has no roof, the camera can only be fixed on the side buildings or poles, which will greatly aggravate the occlusion and congestion between passenger flows and the impact of light and shadow, and the counting method must be effective. to deal with these difficult problems

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