Bus passenger flow automatic counting method based on two-way parallactic space-time diagram and system thereof

Abstract

The invention discloses a bus passenger flow automatic counting method based on two-way parallactic space-time diagram and a system thereof which comprises a left camera, a right camera, a microprocessor, an infrared LED lamp and the like. The method comprises the steps of: paralleling the left camera and the right camera which are synchronous so as to obtain 4 row gray space-time diagrams generated on an in-counting line and an out-counting line; forming 2 moving target row parallactic space-time diagrams on the in-counting line and the out-counting line formed by the row gray space-time diagrams; extracting and marking moving targets in the row parallactic space-time diagrams; segmenting and merging the moving targets; matching optimally the moving targets so as to obtain judgment of passenger flow moving direction and finish automatic counting. The method and the system thereof are applied to buses with complex environment for passenger flow counting, and have compact system structure and high robustness. The adoption of two-way counting lines and stereoscopic vision technology improves the anti-interference performance and real-time performance of the system, thus being applied in counting scenes with rapid light variation and removing the interference caused by shadows to counting result.

Description

technical field [0001] The invention relates to bus passenger flow statistics, in particular to an automatic bus passenger flow counting method and system based on a two-line parallax time-space diagram. This method uses stereo vision technology to detect, match and count moving objects, and is especially suitable for passenger flow counting in complex scenes such as buses. Background technique [0002] With the rapid growth of population and the frequent travel of people, my country's transportation system is facing enormous pressure, and a series of problems such as traffic congestion, waste of resources, and environmental pollution have emerged. The realization of Intelligent Transportation System (ITS) is the key to solve a series of traffic problems. In the whole transportation system, the urban public transportation system is an important part. Urban public transportation has the advantages of large transportation volume, intensive operation, saving energy and road s...

AI Technical Summary

Problems solved by technology

The former method uses the grayscale and chromaticity information of the target to segment the moving target, but it is extremely sensitive to the change of light in the counting scene, and the shadow and interference objects have a great influence on the extraction of the moving target, so it is difficult to count accurately; The latter method utilizes the three-dimensional depth information of the moving target. This method can better solve the problems of illumination changes and shadows in the former method, but the existing method has a large amount of calculation, and it is difficult to track the global moving target. Real-time and accuracy are greatly limited

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