add deeplabv3 example

python/examples/deeplabv3/deeplabv3_client.py

+# Copyright (c) 2020 PaddlePaddle Authors. All Rights Reserved.
+#
+# 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 paddle_serving_client import Client
+from paddle_serving_app.reader import Sequential, File2Image, Resize, Transpose, BGR2RGB, SegPostprocess
+import sys
+import cv2
+
+client = Client()
+client.load_client_config("seg_client/serving_client_conf.prototxt")
+client.connect(["127.0.0.1:9494"])
+
+preprocess = Sequential(
+    [File2Image(), Resize(
+        (512, 512), interpolation=cv2.INTER_LINEAR)])
+
+postprocess = SegPostprocess(2)
+
+filename = "N0060.jpg"
+im = preprocess(filename)
+fetch_map = client.predict(feed={"image": im}, fetch=["output"])
+fetch_map["filename"] = filename
+postprocess(fetch_map)