Trajectory Construction
Mask Trajectory
We use Grounded-SAM2 to segment out mask trajectory from an input video.
Please refer to plan_mask.py for more details.
python trajectory_construction/plan_mask.py --text "elephant.rhino." --video_dir "trajectory_construction/Grounded_SAM2/demo/mammoth_rhino" --output_video_path "assets/mask_trajectory/mammoth_rhino.mp4"
Box Trajectory
We use Grounded-SAM2 to segment out the first frame's mask from an input image.
Then we construct box trajectory by changing the box's (x, y, w, h) frame by frame.
Please refer to plan_box.py for more details.
python trajectory_construction/plan_box.py --text "head." --video_dir "trajectory_construction/Grounded_SAM2/demo/tiger" --output_video_path "assets/box_trajectory/tiger.mp4"
Sparse Box Trajectory
We first construct box trajectory using the methods illustrated above, then only box trajectories in the specified index frames are retained.
See plan_sparse_box.py for more details.
python trajectory_construction/plan_sparse_box.py --text "man." --video_dir "trajectory_construction/Grounded_SAM2/demo/man_head" --output_video_path "assets/sparse_box_trajectory/man_head.mp4" --sparse_box_index 1 48