# KeyPoint模型系列
## 简介
- PaddleDetection KeyPoint部分紧跟业内最新最优算法方案,包含Top-Down、BottomUp两套方案,以满足用户的不同需求。
#### Model Zoo
| 模型 | 输入尺寸 | 通道数 | AP(coco val) | 模型下载 | 配置文件 |
| :---------------- | -------- | ------ | :----------: | :----------------------------------------------------------: | ----------------------------------------------------------- |
| HigherHRNet | 512 | 32 | 67.1 | [higherhrnet_hrnet_w32_512.pdparams](https://paddledet.bj.bcebos.com/models/keypoint/higherhrnet_hrnet_w32_512.pdparams) | [config](./higherhrnet/higherhrnet_hrnet_w32_512.yml) |
| HigherHRNet | 640 | 32 | 68.3 | [higherhrnet_hrnet_w32_640.pdparams](https://paddledet.bj.bcebos.com/models/keypoint/higherhrnet_hrnet_w32_640.pdparams) | [config](./higherhrnet/higherhrnet_hrnet_w32_640.yml) |
| HigherHRNet+SWAHR | 512 | 32 | 68.9 | [higherhrnet_hrnet_w32_512_swahr.pdparams](https://paddledet.bj.bcebos.com/models/keypoint/higherhrnet_hrnet_w32_512_swahr.pdparams) | [config](./higherhrnet/higherhrnet_hrnet_w32_512_swahr.yml) |
| HRNet | 256x192 | 32 | 76.9 | [hrnet_w32_256x192.pdparams](https://paddledet.bj.bcebos.com/models/keypoint/hrnet_w32_256x192.pdparams) | [config](./hrnet/hrnet_w32_256x192.yml) |
| HRNet | 384x288 | 32 | 77.8 | [hrnet_w32_384x288.pdparams](https://paddledet.bj.bcebos.com/models/keypoint/hrnet_w32_384x288.pdparams) | [config](./hrnet/hrnet_w32_384x288.yml) |
## 快速开始
### 1、环境安装
请参考PaddleDetection [安装文档](https://github.com/PaddlePaddle/PaddleDetection/blob/release/2.1/docs/tutorials/INSTALL_cn.md)正确安装PaddlePaddle和PaddleDetection即可
### 2、数据准备
目前KeyPoint模型基于coco数据集开发,其他数据集尚未验证
请参考PaddleDetection[数据准备部分](https://github.com/PaddlePaddle/PaddleDetection/blob/f0a30f3ba6095ebfdc8fffb6d02766406afc438a/docs/tutorials/PrepareDataSet.md)部署准备COCO数据集即可
### 3、训练与测试
**单卡训练:**
```shell
CUDA_VISIBLE_DEVICES=0 python3 tools/train.py -c configs/keypoint/higherhrnet/higherhrnet_hrnet_w32_512.yml
```
**多卡训练:**
```shell
CUDA_VISIBLE_DEVICES=0,1,2,3 python3 -m paddle.distributed.launch tools/train.py -c configs/keypoint/higherhrnet/higherhrnet_hrnet_w32_512.yml
```
**模型评估:**
```shell
CUDA_VISIBLE_DEVICES=0 python3 tools/eval.py -c configs/keypoint/higherhrnet/higherhrnet_hrnet_w32_512.yml
```
**模型预测:**
注意:top-down模型只支持单人截图预测,如需使用多人图,请使用[联合部署推理]方式。或者使用bottom-up模型。
```shell
CUDA_VISIBLE_DEVICES=0 python3 tools/infer.py -c configs/keypoint/higherhrnet/higherhrnet_hrnet_w32_512.yml -o weights=./output/higherhrnet_hrnet_w32_512/model_final.pdparams --infer_dir=../images/ --draw_threshold=0.5 --save_txt=True
```
**部署预测:**
```shell
#导出模型
python tools/export_model.py -c configs/keypoint/higherhrnet/higherhrnet_hrnet_w32_512.yml -o weights=output/higherhrnet_hrnet_w32_512/model_final.pdparams
#部署推理
#keypoint top-down/bottom-up 单独推理,该模式下top-down模型只支持单人截图预测。
python deploy/python/keypoint_infer.py --model_dir=output_inference/higherhrnet_hrnet_w32_512/ --image_file=./demo/000000014439_640x640.jpg --use_gpu=True --threshold=0.5
python deploy/python/keypoint_infer.py --model_dir=output_inference/hrnet_w32_384x288/ --image_file=./demo/hrnet_demo.jpg --use_gpu=True --threshold=0.5
#keypoint top-down模型 + detector 检测联合部署推理(联合推理只支持top-down方式)
python deploy/python/keypoint_det_unite_infer.py --det_model_dir=output_inference/ppyolo_r50vd_dcn_2x_coco/ --keypoint_model_dir=output_inference/hrnet_w32_384x288/ --video_file=../video/xxx.mp4 --use_gpu=True
```