Support serving vehicle attribute recognition pipeline (#2452)

Author: zhangyubo0722

paddlex/inference/pipelines/serving/_pipeline_apps/__init__.py

@@ -16,7 +16,10 @@
 
 from fastapi import FastAPI
 
-from ...attribute_recognition import PedestrianAttributeRecPipeline
+from ...attribute_recognition import (
+    PedestrianAttributeRecPipeline,
+    VehicleAttributeRecPipeline,
+)
 from ...base import BasePipeline
 from ...formula_recognition import FormulaRecognitionPipeline
 from ...layout_parsing import LayoutParsingPipeline
@@ -52,6 +55,9 @@
 from .pedestrian_attribute_recognition import (
     create_pipeline_app as create_pedestrian_attribute_recognition_app,
 )
+from .vehicle_attribute_recognition import (
+    create_pipeline_app as create_vehicle_attribute_recognition_app,
+)
 from .ppchatocrv3 import create_pipeline_app as create_ppchatocrv3_app
 from .seal_recognition import create_pipeline_app as create_seal_recognition_app
 from .semantic_segmentation import (
@@ -168,6 +174,12 @@ def create_pipeline_app(
                 "Expected `pipeline` to be an instance of `PedestrianAttributeRecPipeline`."
             )
         return create_pedestrian_attribute_recognition_app(pipeline, app_config)
+    elif pipeline_name == "vehicle_attribute_recognition":
+        if not isinstance(pipeline, VehicleAttributeRecPipeline):
+            raise TypeError(
+                "Expected `pipeline` to be an instance of `VehicleAttributeRecPipeline`."
+            )
+        return create_vehicle_attribute_recognition_app(pipeline, app_config)
     else:
         if BasePipeline.get(pipeline_name):
             raise ValueError(

paddlex/inference/pipelines/serving/_pipeline_apps/vehicle_attribute_recognition.py

@@ -0,0 +1,100 @@
+# copyright (c) 2024 PaddlePaddle Authors. All Rights Reserve.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from typing import List
+
+from fastapi import FastAPI, HTTPException
+from pydantic import BaseModel, Field
+from typing_extensions import Annotated, TypeAlias
+
+from .....utils import logging
+from ...attribute_recognition import VehicleAttributeRecPipeline
+from .. import utils as serving_utils
+from ..app import AppConfig, create_app
+from ..models import Response, ResultResponse
+
+
+class InferRequest(BaseModel):
+    image: str
+
+
+BoundingBox: TypeAlias = Annotated[List[float], Field(min_length=4, max_length=4)]
+
+
+class Attribute(BaseModel):
+    label: str
+    score: float
+
+
+class Vehicle(BaseModel):
+    bbox: BoundingBox
+    attributes: List[Attribute]
+    score: float
+
+
+class InferResult(BaseModel):
+    vehicles: List[Vehicle]
+    image: str
+
+
+def create_pipeline_app(
+    pipeline: VehicleAttributeRecPipeline, app_config: AppConfig
+) -> FastAPI:
+    app, ctx = create_app(
+        pipeline=pipeline, app_config=app_config, app_aiohttp_session=True
+    )
+
+    @app.post(
+        "/vehicle-attribute-recognition",
+        operation_id="infer",
+        responses={422: {"model": Response}},
+    )
+    async def _infer(request: InferRequest) -> ResultResponse[InferResult]:
+        pipeline = ctx.pipeline
+        aiohttp_session = ctx.aiohttp_session
+
+        try:
+            file_bytes = await serving_utils.get_raw_bytes(
+                request.image, aiohttp_session
+            )
+            image = serving_utils.image_bytes_to_array(file_bytes)
+
+            result = (await pipeline.infer(image))[0]
+
+            vehicles: List[Vehicle] = []
+            for obj in result["boxes"]:
+                vehicles.append(
+                    Vehicle(
+                        bbox=obj["coordinate"],
+                        attributes=[
+                            Attribute(label=l, score=s)
+                            for l, s in zip(obj["labels"], obj["cls_scores"])
+                        ],
+                        score=obj["det_score"],
+                    )
+                )
+            output_image_base64 = serving_utils.image_to_base64(result.img)
+
+            return ResultResponse(
+                logId=serving_utils.generate_log_id(),
+                errorCode=0,
+                errorMsg="Success",
+                result=InferResult(vehicles=vehicles, image=output_image_base64),
+            )
+
+        except Exception as e:
+            logging.exception(e)
+            raise HTTPException(status_code=500, detail="Internal server error")
+
+    return app