import json, cv2, base64 from google.protobuf import json_format def dict_to_json_msg(data): return json.dumps(data) def json_msg_to_dict(json_msg): return json.loads(json_msg) def proto_msg_to_json_msg(proto_data): return json_format.MessageToJson(proto_data) def proto_msg_to_dict(proto_data): return json_msg_to_dict(proto_msg_to_json_msg(proto_data)) def img_to_array(img_path): img = cv2.imread(img_path) return img def img_array_to_base64(image_array): base64_str = base64.b64encode(image_array).decode('utf-8') return base64_str def base64_to_img_array(base64_str): imgString = base64.b64decode(base64_str) nparr = np.fromstring(imgString, np.uint8) image = cv2.imdecode(nparr, cv2.IMREAD_COLOR) return image