“““Keras?implementation?of?SSD.“““

import?keras.backend?as?K
from?keras.layers?import?Activation
from?keras.layers?import?AtrousConvolution2D
from?keras.layers?import?Convolution2D
from?keras.layers?import?Dense
from?keras.layers?import?Flatten
from?keras.layers?import?GlobalAveragePooling2D
from?keras.layers?import?Input
from?keras.layers?import?MaxPooling2D
from?keras.layers?import?merge
from?keras.layers?import?Reshape
from?keras.layers?import?ZeroPadding2D
from?keras.models?import?Model

from?ssd_layers?import?Normalize
from?ssd_layers?import?PriorBox


def?SSD300（input_shape?num_classes=21）:
????“““SSD300?architecture.

????#?Arguments
????????input_shape:?Shape?of?the?input?image
????????????expected?to?be?either?（300?300?3）?or?（3?300?300）（not?tested）.
????????num_classes:?Number?of?classes?including?background.

????#?References
????????https://arxiv.org/abs/1512.02325
????“““
????net?=?{}
????#?Block?1
????input_tensor?=?input_tensor?=?Input（shape=input_shape）
????img_size?=?（input_shape[1]?input_shape[0]）
????net[‘input‘]?=?input_tensor
????net[‘conv1_1‘]?=?Convolution2D（64?3?3
???????????????????????????????????activation=‘relu‘
???????????????????????????????????border_mode=‘same‘
???????????????????????????????????name=‘conv1_1‘）（net[‘input‘]）
????net[‘conv1_2‘]?=?Convolution2D（64?3?3
???????????????????????????????????activation=‘relu‘
???????????????????????????????????border_mode=‘same‘
???????????????????????????????????name=‘conv1_2‘）（net[‘conv1_1‘]）
????net[‘pool1‘]?=?MaxPooling2D（（2?2）?strides=（2?2）?border_mode=‘same‘
????????????????????????????????name=‘pool1‘）（net[‘conv1_2‘]）
????#?Block?2
????net[‘conv2_1‘]?=?Convolution2D（128?3?3
???????????????????????????????????activation=‘relu‘
???????????????????????????????????border_mode=‘same‘
???????????????????????????????????name=‘conv2_1‘）（net[‘pool1‘]）
????net[‘conv2_2‘]?=?Convolution2D（128?3?3
???????????????????????????????????activation=‘relu‘
???????????????????????????????????border_mode=‘same‘
???????????????????????????????????name=‘conv2_2‘）（net[‘conv2_1‘]）
????net[‘pool2‘]?=?MaxPooling2D（（2?2）?strides=（2?2）?border_mode=‘same‘
????????????????????????????????name=‘pool2‘）（net[‘conv2_2‘]）
????#?Block?3
????net[‘conv3_1‘]?=?Convolution2D（256?3?3
???????????????????????????????????activation=‘relu‘
???????????????????????????????????border_mode=‘same‘
???????????????????????????????????name=‘conv3_1‘）（net[‘pool2‘]）
????net[‘conv3_2‘]?=?Convolution2D（256?3?3
???????????????????????????????????activation=‘relu‘
???????????????????????????????????border_mode=‘same‘
???????????????????????????????????name=‘conv3_2‘）（net[‘conv3_1‘]）
????net[‘conv3_3‘]?=?Convolution2D（256?3?3
???????????????????????????????????activation=‘relu‘
???????????????????????????????????border_mode=‘same‘
???????????????????????????????????name=‘conv3_3‘）（net[‘conv3_2‘]）
????net[‘pool3‘]?=?MaxPooling2D（（2?2）?strides=（2?2）?border_mode=‘same‘
????

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2017-03-07?07:04??ssd_keras-master\
?????文件????????1070??2017-03-07?07:04??ssd_keras-master\.gitignore
?????文件????????1069??2017-03-07?07:04??ssd_keras-master\LICENSE
?????目錄???????????0??2017-03-07?07:04??ssd_keras-master\PASCAL_VOC\
?????文件????????3279??2017-03-07?07:04??ssd_keras-master\PASCAL_VOC\get_data_from_xml.py
?????文件?????????910??2017-03-07?07:04??ssd_keras-master\README.md
?????文件?????2511277??2017-03-07?07:04??ssd_keras-master\SSD.ipynb
?????文件??????419988??2017-03-07?07:04??ssd_keras-master\SSD_training.ipynb
?????文件?????1113254??2017-03-07?07:04??ssd_keras-master\gt_pascal.pkl
?????目錄???????????0??2017-03-07?07:04??ssd_keras-master\pics\
?????文件???????57184??2017-03-07?07:04??ssd_keras-master\pics\boys.jpg
?????文件???????45826??2017-03-07?07:04??ssd_keras-master\pics\car_cat.jpg
?????文件???????87894??2017-03-07?07:04??ssd_keras-master\pics\car_cat2.jpg
?????文件??????140391??2017-03-07?07:04??ssd_keras-master\pics\cat.jpg
?????文件???????47638??2017-03-07?07:04??ssd_keras-master\pics\fish-bike.jpg
?????文件??????344513??2017-03-07?07:04??ssd_keras-master\prior_boxes_ssd300.pkl
?????文件???????14599??2017-03-07?07:04??ssd_keras-master\ssd.py
?????文件????????6719??2017-03-07?07:04??ssd_keras-master\ssd_layers.py
?????文件????????5751??2017-03-07?07:04??ssd_keras-master\ssd_training.py
?????文件???????10555??2017-03-07?07:04??ssd_keras-master\ssd_utils.py
?????目錄???????????0??2017-03-07?07:04??ssd_keras-master\testing_utils\
?????文件????????7677??2017-03-07?07:04??ssd_keras-master\testing_utils\videotest.py
?????文件?????????826??2017-03-07?07:04??ssd_keras-master\testing_utils\videotest_example.py