The invention relates to a method for detecting a use state of a safety belt (10). An outer side of the safety belt (10) at least partially has a reflective region (11). The method comprises the steps of acquiring an image of the safety belt (10) by means of an image sensor (20); using a processor (20) to sort the brightness of pixels in the image from high to low, and selecting the Nth brightness as a segmentation threshold to segment a highlight region (50) from the image, wherein the N is the number of reflective pixels of the pre-calibrated reflective region (11); and using the processor (20) to judge whether the safety belt (10) is in a working state or not according to the segmented highlight region (50). The invention also relates to a safety belt assembly and a vehicle. According to the invention, the safety belt can be accurately and efficiently recognized from the image, the use state of the safety belt can be judged, and particularly, interference of patterns and colors of the clothes surface of a passenger and environment brightness changes can be reduced.
本发明提出了一种用于检测安全带(10)的使用状态的方法,其中,所述安全带(10)的外侧面至少部分地具有反光区域(11),所述方法包括:利用图像传感器(20)获取安全带(10)的图像;利用处理器(20)对图像中的像素的亮度从高到低进行排序,并选取第N个亮度作为分割阈值以从图像中分割出高亮区域(50),其中,N为预先标定的反光区域(11)的反光像素数;以及处理器(20)根据分割出的高亮区域(50)判断安全带(10)是否处于工作状态。本发明还涉及一种安全带组件和一种车辆。借助于本发明,能够准确且高效地从图像中识别出安全带并判断安全带的使用状态,特别是能够减少乘车人员的衣服表面的图案和颜色以及环境亮度变化的干扰。
Method for detecting use state of safety belt, safety belt assembly and vehicle
用于检测安全带的使用状态的方法、安全带组件及车辆
2021-05-04
Patent
Electronic Resource
Chinese
IPC: | B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR |
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