License plate localization based on Kapur optimal multilevel threshold

Nur Aliyatul Husna Bt Yahya, S. Abdullah, Abbas Salimi Zaini, Mohd Zamri Murah, A. Abdullah, Shariffpudin Basiron
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Abstract

A license plate localization system is useful for many applications. Due to ambient of lighting in three distinct situation which are morning, afternoon and night causing difficulty to search optimum threshold value in each situation. This research uses global thresholding approach by using Kapur entropy multilevel threshold based on Patch-Levy Bees Algorithm (PLBA). As a result, the system properly localize and identify number plate in the image by using proposed segmentation image. From the experiment, proposed method are achieve accuracy rates to 67.68%, 90.71%, 24.34% respectively for morning, afternoon and night dataset.
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基于Kapur最优多级阈值的车牌定位
车牌定位系统在许多应用中都很有用。由于在三种不同情况下的照明环境,即早上,下午和晚上,导致难以在每种情况下搜索最佳阈值。本研究采用基于Patch-Levy Bees算法(PLBA)的Kapur熵多层阈值的全局阈值方法。结果表明,该系统利用所提出的分割图像对图像中的车牌进行了正确的定位和识别。实验结果表明,该方法在早晨、下午和夜间数据集上的准确率分别达到67.68%、90.71%和24.34%。
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