AOLP Dataset

The application-oriented license plate (AOLP) benchmark database has 2049 images of Taiwan license plates. This database is categorized into three subsets: access control (AC) with 681 samples, traffic law enforcement (LE) with 757 samples, and road patrol (RP) with 611 samples. AC refers to the cases that a vehicle passes a fixed passage with a lower speed or full stop. This is the easiest situation. The images are captured under different illuminations and different weather conditions. LE refers to the cases that a vehicle violates traffic laws and is captured by roadside camera. The background are really cluttered, with road sign and multiple plates in one image. RP refers to the cases that the camera is held on a patrolling vehicle, and the images are taken with arbitrary viewpoints and distances.

应用导向的牌照（AOLP）基准数据库包含2049张台湾牌照图片。该数据库分为三个子集：通行控制（AC）包含681个样本，交通执法（LE）包含757个样本，以及公路巡逻（RP）包含611个样本。AC指的是车辆以较低速度或完全停止通过固定通道的情况，此为最简单情形。图片在不同照明和不同天气条件下拍摄。LE指的是车辆违反交通法规并被路边摄像头捕捉的情况，背景复杂，一张图片中可能包含多个路标和牌照。RP指的是摄像头安装在巡逻车辆上，图像以任意视角和距离拍摄。