基于原text_render 根据自己的需求做了一些修改；
增加了对于色彩的支持(包含文字色彩与背景色彩图)；
增加了通过字符截图来替代字体ttf生成样本的支持(虽然部分票据的点阵字体可以通过淘宝购买，但在出租车票等地域特色显著的票种依然很难收集到相似效果的字体)
Support both latin and non-latin text.
- Ubuntu 16.04
- python 3.5+
Install dependencies:
pip3 install -r requirements.txt
Python3 main.py
带参数的：
python3 main.py --num_img 1000000 --strict --num_processes 8 --config_file ./configs/autowork.yaml --bg_dir ./data/autoworkbg --output_dir /home/jovyan/data-modified/ocr_render/output --tag base_10_copy
编辑 configs/default.yaml 来实现文字弯曲，模糊等效果，详见原text_render;
新增表格线颜色控制，字体颜色控制，添加冗余文字
| Effect name | Image |
|---|---|
| Origin(Font size 25) |  |
| Perspective Transform |  |
| Random Crop |  |
| Curve |  |
| Light border |  |
| Dark border |  |
| Random char space big |  |
| Random char space small |  |
| Middle line |  |
| Table line |  |
| Under line |  |
| Emboss |  |
| Reverse color |  |
| Blur |  |
| font_color |  |
| line_color |  |
| extra_words |  |
颜色配置说明: 程序会随机拾取下方所配置颜色种类(按照fraction中的概率，所有颜色fraction相加需要等于1)，选中颜色种类后，rgb由l_boundary与h_boundary中取一个随机数确定； font_color 同理
line_color:
black:
fraction: 0.3
l_boundary: 0,0,0
h_boundary: 64,64,64
gray:
fraction: 0.7
l_boundary: 77,77,77
h_boundary: 230,230,230
冗余文字说明: 如开启选项，程序会按照设定的总概率随机选取一段独立的文字(颜色，字体及字号大小均采用正文的设置)，生成的文字长度在1到最长文本长度之间随机。 top 与 bottom 中的 fraction 决定了冗余文字生成在上方或下方的概率； *注:由于冗余文字尽量生成在上方与下方，所以可能生成在图片之外，所以最终出现的概率会小于设定值；
extra_words:
enable: true
fraction: 0.05
top:
fraction: 0.5
bottom:
fraction: 0.5
For no-latin language(e.g Chinese), it's very common that some fonts only support limited chars. In this case, you will get bad results like these:
Select fonts that support all chars in --chars_file is annoying.
Run main.py with --strict option, renderer will retry get text from
corpus during generate processing until all chars are supported by a font.
You can use check_font.py script to check how many chars your font not support in --chars_file:
python3 tools/check_font.py
checking font ./data/fonts/eng/Hack-Regular.ttf
chars not supported(4971):
['第', '朱', '广', '沪', '联', '自', '治', '县', '驼', '身', '进', '行', '纳', '税', '防', '火', '墙', '掏', '心', '内', '容', '万', '警','钟', '上', '了', '解'...]
0 fonts support all chars(5071) in ./data/chars/chn.txt:
[]If you want to use GPU to make generate image faster, first compile opencv with CUDA. Compiling OpenCV with CUDA support
Then build Cython part, and add --gpu option when run main.py
cd libs/gpu
python3 setup.py build_ext --inplace
Run python3 main.py --debug will save images with extract information.
You can see how perspectiveTransform works and all bounding/rotated boxes.
- 增加同一张图中不同字体、大小与颜色的设置；
- 增加文字侵蚀，打印不完整的效果；