RoadMapCollector

Environment:

• Windows 10
• Python==3.7.0
• Pillow==8.0.1
• selenium==3.141.0
• Google Chrome 87.0.4280.66
• MATLAB R2019b

Pipeline:

0. Apply API console key in BaiduMap. Select target city and maplevel
   1. cityname = 'beijing'
   2. maplevel = 12 # not greater than 19, the higher, the finer(Please refer to BaiduMapAPI).
1. python main.py cityname maplevel
   1. Coordinate boundary of cityname. -> bound/cityname.json
   2. Pixel boundary of cityname. -> dpi/cityname.json
   3. Roadmap patches of cityname. -> patch/cityname-maplevel.
   4. Complete road map picture. -> picture/cityname-maplevel.png.
2. imageProcess.m
   1. processing road network picture. Pixel position of road network. -> pixel/beijing-12.txt
3. python corner.py cityname maplevel(Optional)
   1. Simplified the pixel-level edge by corner detection. -> pixel/beijing-12-simplified.txt
4. python pixel2coor.py cityname maplevel
   1. Utilizing baiduAPI to transform pixel-level position to longitude and latitude. -> coor/beijing-12-simplified.txt
5. python coorTransform.py cityname maplevel(Optional)
   1. Transform coordinates from bd09 to gcj02. -> coor/beijing-12-simplified-gcj.txt

Examples:

A patch of Beijing's roadmap.

Original road map (blue) and simplified road map (red).

Author:

• Erzhuo Shao and Jie Feng
• Erzhuo Shao: Wechat : shaoerzhuo, E-mail : sez20@mails.tsinghua.edu.cn
• Jie Feng : E-mail : fengj12ee@hotmail.com