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Hello,
I am having trouble understanding the visualisation code.
Could anyone please explain what exactly is going on here in simple terms?
https://github.com/hustvl/VAD/blob/main/tools/analysis_tools/visualization.py#L800C1-L834C1
plan_traj = np.concatenate(( plan_traj[:, [0]], plan_traj[:, [1]], -1.0*np.ones((plan_traj.shape[0], 1)), np.ones((plan_traj.shape[0], 1)), ), axis=1) # add the start point in lcf plan_traj = np.concatenate((np.zeros((1, plan_traj.shape[1])), plan_traj), axis=0) # plan_traj[0, :2] = 2*plan_traj[1, :2] - plan_traj[2, :2] plan_traj[0, 0] = 0.3 plan_traj[0, 2] = -1.0 plan_traj[0, 3] = 1.0 l2e_r = lidar_cs_record['rotation'] l2e_t = lidar_cs_record['translation'] e2g_r = lidar_pose_record['rotation'] e2g_t = lidar_pose_record['translation'] l2e_r_mat = Quaternion(l2e_r).rotation_matrix e2g_r_mat = Quaternion(e2g_r).rotation_matrix s2l_r, s2l_t = obtain_sensor2top(nusc, sample_data_token, l2e_t, l2e_r_mat, e2g_t, e2g_r_mat, cam) # obtain lidar to image transformation matrix lidar2cam_r = np.linalg.inv(s2l_r) lidar2cam_t = s2l_t @ lidar2cam_r.T lidar2cam_rt = np.eye(4) lidar2cam_rt[:3, :3] = lidar2cam_r.T lidar2cam_rt[3, :3] = -lidar2cam_t viewpad = np.eye(4) viewpad[:camera_intrinsic.shape[0], :camera_intrinsic.shape[1]] = camera_intrinsic lidar2img_rt = (viewpad @ lidar2cam_rt.T) plan_traj = lidar2img_rt @ plan_traj.T plan_traj = plan_traj[0:2, ...] / np.maximum( plan_traj[2:3, ...], np.ones_like(plan_traj[2:3, ...]) * 1e-5) plan_traj = plan_traj.T plan_traj = np.stack((plan_traj[:-1], plan_traj[1:]), axis=1)
The text was updated successfully, but these errors were encountered:
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Hello,
I am having trouble understanding the visualisation code.
Could anyone please explain what exactly is going on here in simple terms?
https://github.com/hustvl/VAD/blob/main/tools/analysis_tools/visualization.py#L800C1-L834C1
The text was updated successfully, but these errors were encountered: