in lib/dataset/JointsDataset.py [0:0]
def __getitem__(self, idx):
db_rec = copy.deepcopy(self.db[idx])
image_file = db_rec['image']
filename = db_rec['filename'] if 'filename' in db_rec else ''
imgnum = db_rec['imgnum'] if 'imgnum' in db_rec else ''
if self.data_format == 'zip':
from utils import zipreader
data_numpy = zipreader.imread(
image_file, cv2.IMREAD_COLOR | cv2.IMREAD_IGNORE_ORIENTATION)
else:
data_numpy = cv2.imread(
image_file, cv2.IMREAD_COLOR | cv2.IMREAD_IGNORE_ORIENTATION)
if data_numpy is None:
logger.error('=> fail to read {}'.format(image_file))
raise ValueError('Fail to read {}'.format(image_file))
joints = db_rec['joints_3d']
joints_vis = db_rec['joints_3d_vis']
c = db_rec['center']
s = db_rec['scale']
score = db_rec['score'] if 'score' in db_rec else 1
r = 0
if self.is_train:
sf = self.scale_factor
rf = self.rotation_factor
s = s * np.clip(np.random.randn()*sf + 1, 1 - sf, 1 + sf)
r = np.clip(np.random.randn()*rf, -rf*2, rf*2) \
if random.random() <= 0.6 else 0
if self.flip and random.random() <= 0.5:
data_numpy = data_numpy[:, ::-1, :]
joints, joints_vis = fliplr_joints(
joints, joints_vis, data_numpy.shape[1], self.flip_pairs)
c[0] = data_numpy.shape[1] - c[0] - 1
trans = get_affine_transform(c, s, r, self.image_size)
input = cv2.warpAffine(
data_numpy,
trans,
(int(self.image_size[0]), int(self.image_size[1])),
flags=cv2.INTER_LINEAR)
if self.transform:
input = self.transform(input)
for i in range(self.num_joints):
if joints_vis[i, 0] > 0.0:
joints[i, 0:2] = affine_transform(joints[i, 0:2], trans)
target, target_weight = self.generate_target(joints, joints_vis)
target = torch.from_numpy(target)
target_weight = torch.from_numpy(target_weight)
meta = {
'image': image_file,
'filename': filename,
'imgnum': imgnum,
'joints': joints,
'joints_vis': joints_vis,
'center': c,
'scale': s,
'rotation': r,
'score': score
}
return input, target, target_weight, meta