Design of License Plate Recognition System in Haze Weather
In recent years,with the acceleration of urbanization and population growth,haze weather has been common in major cities in China due to industrial and traffic emissions,energy consumption and other reasons.Haze weather also has a negative impact on the development of transportation,tourism and other fields.In the field of smart transportation,haze weather will make it difficult for vehicles to pass through intersections,speed limit roads and other sections,and traffic control will be more strictly implemented,affecting the traffic capacity and traffic flow of roads.To address the negative impact of haze on transportation,governments and enterprises in various regions are actively exploring license plate recognition systems to cope with hazy weather conditions.The overall design scheme of this license plate recognition system is roughly divided into five steps,image defogging processing,image prepro-cessing,license plate positioning,character segmentation,and character recognition.The license plate recognition system is designed with STM32H7 series high-performance chips as the core,equipped with OV5640 for image ac-quisition and 1.4-inch color IPS LCD hard screen for preliminary display,and finally real-time transmission of i-dentification information to the PC platform display.
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