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backbone.py
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backbone.py
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#! /usr/bin/env python
# coding=utf-8
#================================================================
# Copyright (C) 2019 * Ltd. All rights reserved.
#
# Editor : VIM
# File name : backbone.py
# Author : YunYang1994
# Created date: 2019-07-11 23:37:51
# Description :
#
#================================================================
import tensorflow as tf
import core.common as common
def darknet53(input_data):
input_data = common.convolutional(input_data, (3, 3, 3, 32))
input_data = common.convolutional(input_data, (3, 3, 32, 64), downsample=True)
for i in range(1):
input_data = common.residual_block(input_data, 64, 32, 64)
input_data = common.convolutional(input_data, (3, 3, 64, 128), downsample=True)
for i in range(2):
input_data = common.residual_block(input_data, 128, 64, 128)
input_data = common.convolutional(input_data, (3, 3, 128, 256), downsample=True)
for i in range(8):
input_data = common.residual_block(input_data, 256, 128, 256)
route_1 = input_data
input_data = common.convolutional(input_data, (3, 3, 256, 512), downsample=True)
for i in range(8):
input_data = common.residual_block(input_data, 512, 256, 512)
route_2 = input_data
input_data = common.convolutional(input_data, (3, 3, 512, 1024), downsample=True)
for i in range(4):
input_data = common.residual_block(input_data, 1024, 512, 1024)
return route_1, route_2, input_data