# 数学助理系统文档
# 一、数学助理简介
数学助理是一个手写数学计算题识别与自动求解系统。它是一个网页,能够接收用户上传的包含数学计算题的图片,然后返回计算过程和计算结果。
![](https://www.writebug.com/myres/static/uploads/2022/1/10/985d381daf25717f3283fc354a8fc238.writebug)
# 二、运行环境
该项目在 mac OS 10.13.3 下运行,如果经过正确配置,Windows 系统也应该可以运行。
该项目在 python3.6 环境下运行。同时推荐使用 IDE-pycharm 来运行本项目。
# 三、项目重要文件介绍
- 项目配置文件:config 是一个 python 的 package,里面定义了一些系统参数,包括系统能够识别的字符、卷积神经网络模型的文件、数据集路径、测试题目路径等。
- tools:init.py 包含了主要的常用的函数。cnn_model.py 定义了卷积神经网络。Image_input.py 用于读取字符训练数据集和测试数据集。Image_preprocess.py 实现了对图片的预处理,包括灰度化、二值化、切割、归一化等。Train_and_eval_model.py 是用来训练卷积神经网络和测试卷积神经网络的文件。
- scan 实现了系统词法分析部分,即是系统自动机的编程实现。
- parser 实现了对数学计算题的结构分析,包括二维计算式的分析和使用递归下降法对算术表达式进行分析。
- calculator 实现了对数学计算题的自动求解。
- solver 是对整个项目的包装,传入题目图片路径,将会对其进行识别和求解。
- evaluator 是使用 160 道题目测试系统的文件。
- 文件夹 testImgs 存放着 160 道测试题集,形式为图片,答案在 evaluator 里面有定义。
- 文件夹 dataset1 是字符数据集。
- My_cnn_model_config5 是使用 16000 步训练后得到的卷积神经网络文件,是 TensorFlow 自动生成并保存的。
- Welcome.py 是负责生成网页。Test.py 是用来测试系统的,main.py 和 solver 一样。
# 四、操作说明
要运行这个系统分为两种,一种是网页模式,一种是接口模式。
- 网页模式:
- 参考文章安装 flask 网页框架;
- 参考文章配置 python3.6 版本的虚拟环境;
- 打开系统目录的 venv 文件夹,解压 lib.zip 文件到本路径下。
- 配置好运行环境后,用 pycharm 打开项目,pycharm 会自动下载本项目所需要的 python 库,等待 pycharm 下载好后,就可以运行网页模式。本项目使用了 flask 网站框架。同时本项目还在虚拟环境下运行,关于配置 flask 和虚拟环境参考文章:、
首先使用命令行进入本项目路径,然后激活虚拟环境:
venv/bin/activate
然后使用指令
export FLASK_APP=welcome.py
flask run
如果要退出虚拟环境,输入命令:
deactivate
- 最后打开浏览器输入地址:127.0.0.1:5000 即可看到项目网页,输入图片,即可获得处理结果。下图是成功运行网页版的截图:
![](https://www.writebug.com/myres/static/uploads/2022/1/10/f5c0a0e19586a1e52d463d53ef9b228e.writebug)
- 接口模式
项目有一个 solver 的 python package。里面的 solve 方法封装了整个系统。其功能是输入一张图片路径,将输出计算题识别过程和计算结果。
使用方法:该函数接收两个参数,第一个参数是文件路径,第二个是处理模式。
处理模式默认为‘product’。其效果是返回一张系统生成包含计算过程和计算结果的图片名称,会在 static 目录下。
还有一种处理模式为‘test’,此模式下 solve 将返回两个字符串,一个是识别出的数学表达式的 latex 输出。还有一个字符串是对应计算题的答案。
其中 test.py 是对单张图片的测试。Evaluation 是对 160 张图片的测试。运行这两个文件则 console 会打印处理结果。
下图是成功运行的结果:
![](https://www.writebug.com/myres/static/uploads/2022/1/10/16440788d8cb30c6630abf2b90435af8.writebug)
注意事项:当你运行 evaluation 时,请将 config 模块的 MODEL_DIR 改成’../my_cnn_model_config5’。
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温馨提示
一个拍照做题程序。输入一张包含数学计算题的图片,输出识别出的数学计算式以及计算结果。 数学助理是一个手写数学计算题识别与自动求解系统。它是一个网页,能够接收用户上传的包含数学计算题的图片,然后返回计算过程和计算结果
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