def METHOD_NAME(self, img_id):
    img_info = self.coco.loadImgs(img_id)[0]
    img_path = os.path.join(self.dataset_dir, self.image_dir,
                            img_info['file_name'])
    img = cv2.imread(img_path)
    img = cv2.cvtColor(img, cv2.COLOR_BGR2RGB)
    return img