in lib/dataset/JointsDataset.py [0:0]
def select_data(self, db):
db_selected = []
for rec in db:
num_vis = 0
joints_x = 0.0
joints_y = 0.0
for joint, joint_vis in zip(
rec['joints_3d'], rec['joints_3d_vis']):
if joint_vis[0] <= 0:
continue
num_vis += 1
joints_x += joint[0]
joints_y += joint[1]
if num_vis == 0:
continue
joints_x, joints_y = joints_x / num_vis, joints_y / num_vis
area = rec['scale'][0] * rec['scale'][1] * (self.pixel_std**2)
joints_center = np.array([joints_x, joints_y])
bbox_center = np.array(rec['center'])
diff_norm2 = np.linalg.norm((joints_center-bbox_center), 2)
ks = np.exp(-1.0*(diff_norm2**2) / ((0.2)**2*2.0*area))
metric = (0.2 / 16) * num_vis + 0.45 - 0.2 / 16
if ks > metric:
db_selected.append(rec)
logger.info('=> num db: {}'.format(len(db)))
logger.info('=> num selected db: {}'.format(len(db_selected)))
return db_selected