ncnn/python/examples/yolov2.py

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#
# Copyright (C) 2020 THL A29 Limited, a Tencent company. All rights reserved.
#
# Licensed under the BSD 3-Clause License (the "License"); you may not use this file except
# in compliance with the License. You may obtain a copy of the License at
#
# https://opensource.org/licenses/BSD-3-Clause
#
# 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
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import sys
import cv2
import numpy as np
import ncnn
from ncnn.model_zoo import get_model
from ncnn.utils import draw_detection_objects

if __name__ == "__main__":
    if len(sys.argv) != 2:
        print("Usage: %s [imagepath]\n" % (sys.argv[0]))
        sys.exit(0)

    imagepath = sys.argv[1]

    m = cv2.imread(imagepath)
    if m is None:
        print("cv2.imread %s failed\n" % (imagepath))
        sys.exit(0)

    net = get_model("mobilenet_yolov2", num_threads=4, use_gpu=True)

    objects = net(m)

    draw_detection_objects(m, net.class_names, objects)