车牌识别图像处理算法的研究与实现(2)

第2章 基于有向分形参数的车牌定位·································································8

2.1 基于有向分形参数的车牌定位算法原理·····································································8

2.1.1 分形及分形维数简介··························································································8

2.1.2 基于离散分数布朗增量随机场的分形维数计算方法·······································9

2.1.3 车牌纹理特征研究····························································································11

2.2 基于有向分形参数的车牌定位实验研究···································································13

2.2.1 定位算法描述···································································································13

2.2.2 定位算法具体步骤····························································································16

2.3 定位算法鲁棒性分析··································································································17

2.3.1 模板尺寸与拍摄距离匹配度的分析································································17

2.3.2 模板尺寸和相对像素距离对含噪图像处理能力的分析·································19

2.3.3 有向分形参数的优化设计················································································22

2.4 本章小结···························