update doc
This commit is contained in:
tink2123
parent
8667b1de06
commit
620b87ceb9
|
|
@ -31,7 +31,7 @@
|
|||
| character_dict_path | 设置字典路径 | ./ppocr/utils/ic15_dict.txt | \ |
|
||||
| loss_type | 设置 loss 类型 | ctc | 支持两种loss： ctc / attention |
|
||||
| distort | 设置是否使用数据增强 | false | 设置为true时，将在训练时随机进行扰动，支持的扰动操作可阅读[img_tools.py](https://github.com/PaddlePaddle/PaddleOCR/blob/develop/ppocr/data/rec/img_tools.py) |
|
||||
| use_space_char | 设置是否识别空格 | false | 仅在"ch"模式下支持空格 |
|
||||
| use_space_char | 设置是否识别空格 | false | 仅在 character_type=ch 时支持空格 |
|
||||
| reader_yml | 设置reader配置文件 | ./configs/rec/rec_icdar15_reader.yml | \ |
|
||||
| pretrain_weights | 加载预训练模型路径 | ./pretrain_models/CRNN/best_accuracy | \ |
|
||||
| checkpoints | 加载模型参数路径 | None | 用于中断后加载参数继续训练 |
|
||||
|
|
|
|||
|
|
@ -96,6 +96,9 @@ word_dict.txt 每行有一个单字，将字符与数字索引映射在一起，
|
|||
|
||||
如需自定义dic文件，请在 `configs/rec/rec_icdar15_train.yml` 中添加 `character_dict_path` 字段, 并将 `character_type` 设置为 `ch`。
|
||||
|
||||
*如果希望支持识别"空格"类别, 请将yml文件中的 `use_space_char` 字段设置为 `true`。`use_space_char` 仅在 `character_type=ch` 时生效*
|
||||
|
||||
|
||||
### 启动训练
|
||||
|
||||
PaddleOCR提供了训练脚本、评估脚本和预测脚本，本节将以 CRNN 识别模型为例：
|
||||
|
|
@ -124,6 +127,18 @@ export CUDA_VISIBLE_DEVICES=0,1,2,3
|
|||
python3 tools/train.py -c configs/rec/rec_icdar15_train.yml
|
||||
```
|
||||
|
||||
- 数据增强
|
||||
|
||||
PaddleOCR提供了多种数据增强方式，如果您希望在训练时加入扰动，请在配置文件中设置 `distort: true`。
|
||||
|
||||
默认的扰动方式有：颜色空间转换(cvtColor)、模糊(blur)、抖动(jitter)、噪声(Gasuss noise)、随机切割(random crop)、透视(perspective)、颜色反转(reverse)。
|
||||
|
||||
训练过程中每种扰动方式以50%的概率被选择，具体代码实现请参考：[img_tools.py](https://github.com/PaddlePaddle/PaddleOCR/blob/develop/ppocr/data/rec/img_tools.py)
|
||||
|
||||
*由于OpenCV的兼容性问题，扰动操作暂时只支持GPU*
|
||||
|
||||
- 训练
|
||||
|
||||
PaddleOCR支持训练和评估交替进行, 可以在 `configs/rec/rec_icdar15_train.yml` 中修改 `eval_batch_step` 设置评估频率，默认每500个iter评估一次。评估过程中默认将最佳acc模型，保存为 `output/rec_CRNN/best_accuracy` 。
|
||||
|
||||
如果验证集很大，测试将会比较耗时，建议减少评估次数，或训练完再进行评估。
|
||||
|
|
|
|||
|
|
@ -31,7 +31,7 @@ Take `rec_chinese_lite_train.yml` as an example
|
|||
| character_dict_path | Set dictionary path | ./ppocr/utils/ic15_dict.txt | \ |
|
||||
| loss_type | Set loss type | ctc | Supports two types of loss: ctc / attention |
|
||||
| distort | Set use distort | false | Support distort type ,read [img_tools.py](https://github.com/PaddlePaddle/PaddleOCR/blob/develop/ppocr/data/rec/img_tools.py) |
|
||||
| use_space_char | Wether to recognize space | false | Only support in "ch" mode |
|
||||
| use_space_char | Wether to recognize space | false | Only support in character_type=ch mode |
|
||||
| reader_yml | Set the reader configuration file | ./configs/rec/rec_icdar15_reader.yml | \ |
|
||||
| pretrain_weights | Load pre-trained model path | ./pretrain_models/CRNN/best_accuracy | \ |
|
||||
| checkpoints | Load saved model path | None | Used to load saved parameters to continue training after interruption |
|
||||
|
|
|
|||
Loading…
Reference in New Issue