t tracked_boxes_right = [];
    let tracked_boxes_none = [];
    let boxes = { input_left: boxes_left, input_right: boxes_right, input_none: boxes_none, tracked_left: tracked_boxes_left, tracked_right: tracked_boxes_right, tracked_none: tracked_boxes_none };
    let indexFingerBoxes = { input_left: null, input_right: null, tracked_left: null, tracked_right: null };
    const defaultBoxColor = {r: 0.5, g: 0.5, b: 0.5};
    const leftBoxColor = {r: 1, g: 0, b: 1};
    const rightBoxColor = {r: 0, g: 1, b: 1};