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number-recognition's Introduction

NumberRecognition

概述

对包含单个数字的图片进行数字识别. 支持模型的训练和持久化以及使用模型对新的图片进行预测.

不是端到端的, 是先用一些传统图形学方法提取出特征, 再传给神经网络进行训练.

没有调用任何第三方库, 纯用Java撸的.

相关算法

数字图像处理相关算法

  • 灰度化
    • 加权平均值法
  • 放缩
    • 最邻近插值法
    • 双线性插值法
  • 平滑
    • 高斯模板
  • 二值化
    • 固定阈值
    • OSTU自适应阈值
  • 膨胀和腐蚀
    • 3*3窗口
  • 锐化
    • 拉普拉斯算子
  • 归一化

神经网络相关算法

  • bp算法
    • 正向传播
    • 反向传播
    • 参数更新
  • 激活函数
    • Sigmoid
    • ReLU
    • Leaky-ReLU
    • SoftMax
  • 代价函数
    • 分类交叉熵函数
  • 优化算法
    • Adam
  • 权重初始化
    • He 初始化(适用于ReLU)
  • 正则化
    • L1 正则化
    • L2 正则化
  • 学习速率递减
  • 性能度量
    • 错误率
  • 卷积神经网络
    • 待完成

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