fix poseval dependency (open-mmlab#953)

Author: ly015

mmpose/datasets/datasets/top_down/topdown_posetrack18_dataset.py

@@ -7,13 +7,18 @@
 import json_tricks as json
 import numpy as np
 from mmcv import Config
-from poseval import eval_helpers
-from poseval.evaluateAP import evaluateAP
 
 from ....core.post_processing import oks_nms, soft_oks_nms
 from ...builder import DATASETS
 from .topdown_coco_dataset import TopDownCocoDataset
 
+try:
+    from poseval import eval_helpers
+    from poseval.evaluateAP import evaluateAP
+    has_poseval = True
+except (ImportError, ModuleNotFoundError):
+    has_poseval = False
+
 
 @DATASETS.register_module()
 class TopDownPoseTrack18Dataset(TopDownCocoDataset):
@@ -259,6 +264,11 @@ def _write_posetrack18_keypoint_results(keypoint_results, gt_folder,
     def _do_python_keypoint_eval(self, gt_folder, pred_folder):
         """Keypoint evaluation using poseval."""
 
+        if not has_poseval:
+            raise ImportError('Please install poseval package for evaluation'
+                              'on PoseTrack dataset '
+                              '(see requirements/optional.txt)')
+
         argv = ['', gt_folder + '/', pred_folder + '/']
 
         print('Loading data')

requirements/optional.txt

@@ -1,6 +1,7 @@
 albumentations>=0.3.2 --no-binary imgaug,albumentations
 onnx
 onnxruntime
+poseval@git+https://github.com/svenkreiss/poseval.git
 pyrender
 smplx>=0.1.28
 trimesh

requirements/runtime.txt

@@ -6,7 +6,6 @@ munkres
 numpy
 opencv-python
 pillow
-poseval@git+https://github.com/svenkreiss/poseval.git
 scipy
 torchvision
 xtcocotools>=1.8

setup.cfg

@@ -19,6 +19,6 @@ line_length = 79
 multi_line_output = 0
 known_standard_library = pkg_resources,setuptools
 known_first_party = mmpose
-known_third_party = PIL,cv2,h5py,json_tricks,matplotlib,mmcv,munkres,numpy,poseval,pytest,pytorch_sphinx_theme,scipy,seaborn,spacepy,titlecase,torch,torchvision,xmltodict,xtcocotools
+known_third_party = PIL,cv2,h5py,json_tricks,matplotlib,mmcv,munkres,numpy,pytest,pytorch_sphinx_theme,scipy,seaborn,spacepy,titlecase,torch,torchvision,xmltodict,xtcocotools
 no_lines_before = STDLIB,LOCALFOLDER
 default_section = THIRDPARTY