def METHOD_NAME(self,
            image_file,
            visualize_out='./visualized_result.jpg',
            threshold=0.0):
    input_dict = self.preprocess(image_file)
    results = self.predictor.run(input_dict)
    boxes = self.postprocess(results, threshold)
    if visualize_out is not None:
        self.visualize(image_file, boxes, visualize_out)
    return boxes