def add_inference_args(parser):
    """Add parser arguments for inference options."""
    parser.add_argument('--inference-type', metavar='<inference-type>', type=str, required=False, choices=['cvlib', 'fastmot'], default='cvlib', help='Input type for inference ["cvlib", "fastmot"].')
    parser.add_argument('--names', metavar='<names>', type=str, required=False, default='./utils/cfg/coco.names', help='Path to *.names.')
    parser.add_argument('--object-category', metavar='<object-category>', type=str, required=False, default='scissors', help='COCO object category to select [scissors].')
    parser.add_argument('--confidence-threshold', metavar='<confidence-threshold>', type=float, required=False, default=0.25, help='Confidence threshold.') # 0.5
    parser.add_argument('--nms-threshold', metavar='<nms-threshold>', type=float, required=False, default=0.3, help='NMS threshold.')
    parser.add_argument('--model', metavar='<model>', type=str, required=False, default='yolov4', help='Path of input image.')
    parser.add_argument('--no-filter-object-category', action='store_true', help='Disable biggest single-object category selection.')
    parser.add_argument('--disable-gpu', action='store_true', help='Disable GPU usage for inference.')
    return parser