import numpy as np
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import cv2
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import os
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import urllib
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import tarfile
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import shutil
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import traceback
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import time
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import sys
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from rknn.api import RKNN
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PB_FILE = './inception_v3_quant_frozen.pb'
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RKNN_MODEL_PATH = './inception_v3_quant_frozen.rknn'
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INPUTS = ['input']
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OUTPUTS = ['InceptionV3/Logits/SpatialSqueeze']
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IMG_PATH = './goldfish_299x299.jpg'
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INPUT_SIZE = 299
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def show_outputs(outputs):
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output = outputs[0][0]
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output_sorted = sorted(output, reverse=True)
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top5_str = 'inception_v3\n-----TOP 5-----\n'
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for i in range(5):
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value = output_sorted[i]
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index = np.where(output == value)
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for j in range(len(index)):
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if (i + j) >= 5:
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break
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if value > 0:
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topi = '{}: {}\n'.format(index[j], value)
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else:
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topi = '-1: 0.0\n'
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top5_str += topi
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print(top5_str)
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def readable_speed(speed):
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speed_bytes = float(speed)
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speed_kbytes = speed_bytes / 1024
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if speed_kbytes > 1024:
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speed_mbytes = speed_kbytes / 1024
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if speed_mbytes > 1024:
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speed_gbytes = speed_mbytes / 1024
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return "{:.2f} GB/s".format(speed_gbytes)
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else:
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return "{:.2f} MB/s".format(speed_mbytes)
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else:
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return "{:.2f} KB/s".format(speed_kbytes)
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def show_progress(blocknum, blocksize, totalsize):
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speed = (blocknum * blocksize) / (time.time() - start_time)
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speed_str = " Speed: {}".format(readable_speed(speed))
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recv_size = blocknum * blocksize
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f = sys.stdout
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progress = (recv_size / totalsize)
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progress_str = "{:.2f}%".format(progress * 100)
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n = round(progress * 50)
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s = ('#' * n).ljust(50, '-')
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f.write(progress_str.ljust(8, ' ') + '[' + s + ']' + speed_str)
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f.flush()
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f.write('\r\n')
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if __name__ == '__main__':
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# Create RKNN object
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rknn = RKNN(verbose=True)
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# If inception_v3_quant_frozen.pb does not exist, download it.
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# Download address:
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# https://storage.googleapis.com/download.tensorflow.org/models/tflite_11_05_08/inception_v3_quant.tgz
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if not os.path.exists(PB_FILE):
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print('--> Download {}'.format(PB_FILE))
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url = 'https://storage.googleapis.com/download.tensorflow.org/models/tflite_11_05_08/inception_v3_quant.tgz'
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download_file = 'inception_v3_quant.tgz'
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try:
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start_time = time.time()
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urllib.request.urlretrieve(url, download_file, show_progress)
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except:
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print('Download {} failed.'.format(download_file))
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print(traceback.format_exc())
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exit(-1)
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try:
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tar = tarfile.open(download_file)
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target_dir = os.path.splitext(download_file)[0]
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if os.path.isdir(target_dir):
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pass
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else:
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os.mkdir(target_dir)
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tar.extractall(target_dir)
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tar.close()
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except:
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print('Extract {} failed.'.format(download_file))
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exit(-1)
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pb_file = os.path.join(target_dir, PB_FILE)
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if os.path.exists(pb_file):
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shutil.copyfile(pb_file, './inception_v3_quant_frozen.pb')
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shutil.rmtree(target_dir)
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os.remove(download_file)
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print('done')
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# Pre-process config
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print('--> Config model')
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rknn.config(mean_values=[104, 117, 123], std_values=[128, 128, 128])
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print('done')
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# Load model
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print('--> Loading model')
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ret = rknn.load_tensorflow(tf_pb=PB_FILE,
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inputs=INPUTS,
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outputs=OUTPUTS,
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input_size_list=[[1, INPUT_SIZE, INPUT_SIZE, 3]])
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if ret != 0:
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print('Load model failed!')
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exit(ret)
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print('done')
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# Build model
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print('--> Building model')
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ret = rknn.build(do_quantization=False)
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if ret != 0:
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print('Build model failed!')
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exit(ret)
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print('done')
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# Export rknn model
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print('--> Export rknn model')
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ret = rknn.export_rknn(RKNN_MODEL_PATH)
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if ret != 0:
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print('Export rknn model failed!')
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exit(ret)
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print('done')
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# Set inputs
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img = cv2.imread(IMG_PATH)
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img = cv2.cvtColor(img, cv2.COLOR_BGR2RGB)
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# Init runtime environment
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print('--> Init runtime environment')
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ret = rknn.init_runtime()
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if ret != 0:
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print('Init runtime environment failed!')
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exit(ret)
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print('done')
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# Inference
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print('--> Running model')
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outputs = rknn.inference(inputs=[img])
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np.save('./tensorflow_inception_v3_qat_0.npy', outputs[0])
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x = outputs[0]
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output = np.exp(x)/np.sum(np.exp(x))
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outputs = [output]
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show_outputs(outputs)
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print('done')
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rknn.release()
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