class Model(object):
"""
Base Tensorflow Inference Model Class
"""
def __init__(self,config):
self.config = config
self.detection_graph = tf.Graph()
self.category_index = None
self.masks = None
#self._tf_config = tf.compat.v1.ConfigProto(allow_soft_placement=True)
self._tf_config = tf.ConfigProto(allow_soft_placement=True)
self._tf_config.gpu_options.allow_growth=True
#self._tf_config.gpu_options.force_gpu_compatible=True
#self._tf_config.gpu_options.per_process_gpu_memory_fraction = 0.01
self._run_options = tf.RunOptions(trace_level=tf.RunOptions.NO_TRACE)
self._run_metadata = False
self._wait_thread = False
self._is_imageD = False
self._is_videoD = False
self._is_rosD = False
print ('> Model: {}'.format(self.config.MODEL_PATH))
def download_model(self):
"""
downlaods model from model_zoo
"""
if self.config.MODEL_TYPE == 'dl':
download_base = 'http://download.tensorflow.org/models/'
elif self.config.MODEL_TYPE == 'od':
download_base = 'http://download.tensorflow.org/models/object_detection/'
model_file = self.config.MODEL_NAME + '.tar.gz'
if not os.path.isfile(self.config.MODEL_PATH) and self.config.DOWNLOAD_MODEL:
print('> Model not found. Downloading it now.')
opener = urllib.request.URLopener()
opener.retrieve(download_base + model_file, model_file)
tar_file = tarfile.open(model_file)
for file in tar_file.getmembers():
file_name = os.path.basename(file.name)
if 'frozen_inference_graph.pb' in file_name:
tar_file.extract(file, os.getcwd() + '/models/')
os.remove(os.getcwd() + '/' + model_file)
else:
print('> Model found. Proceed.')
def node_name(self,n):
if n.startswith("^"):
return n[1:]
else:
return n.split(":")[0]
def load_frozen_graph(self):
"""
loads graph from frozen model file
"""
print('> Loading frozen model into memory')
if (self.config.MODEL_TYPE == 'od' and self.config.SPLIT_MODEL):
# load a frozen Model and split it into GPU and CPU graphs
# Hardcoded split points for ssd_mobilenet
tf.reset_default_graph()
if self.config.SSD_SHAPE == 600:
shape = 7326
else:
shape = 1917
self.score = tf.placeholder(tf.float32, shape=(None, shape, self.config.NUM_CLASSES), name=self.config.SPLIT_NODES[0])
self.expand = tf.placeholder(tf.float32, shape=(None, shape, 1, 4), name=self.config.SPLIT_NODES[1])
#self.tofloat = tf.placeholder(tf.float32, shape=(None), name=self.config.SPLIT_NODES[2])
for node in tf.get_default_graph().as_graph_def().node:
if node.name == self.config.SPLIT_NODES[0]:
score_def = node
if node.name == self.config.SPLIT_NODES[1]:
expand_def = node
#if node.name == self.config.SPLIT_NODES[2]:
# tofloat_def = node
with self.detection_graph.as_default():
graph_def = tf.GraphDef()
with tf.gfile.GFile(self.config.MODEL_PATH, 'rb') as fid:
serialized_graph = fid.read()
graph_def.ParseFromString(serialized_graph)
edges = {}
name_to_node_map = {}
node_seq = {}
seq = 0
for node in graph_def.node:
n = self.node_name(node.name)
name_to_node_map[n] = node
edges[n] = [self.node_name(x) for x in node.input]
node_seq[n] = seq
seq += 1
for d in self.config.SPLIT_NODES:
assert d in name_to_node_map, "%s is not in graph" % d
nodes_to_keep = set()
next_to_visit = self.config.SPLIT_NODES[:]
while next_to_visit:
n = next_to_visit[0]
del next_to_visit[0]
if n in nodes_to_keep: continue
nodes_to_keep.add(n)
next_to_visit += edges[n]
nodes_to_keep_list = sorted(list(nodes_to_keep), key=lambda n: node_seq[n])
nodes_to_remove = set()
for n in node_seq:
if n in nodes_to_keep_list: continue
nodes_to_remove.add(n)
nodes_to_remove_list = sorted(list(nodes_to_remove), key=lambda n: node_seq[n])
keep = graph_pb2.GraphDef()
for n in nodes_to_keep_list:
keep.node.extend([copy.deepcopy(name_to_node_map[n])])
remove = graph_pb2.GraphDef()
remove.node.extend([score_def])
remove.node.extend([expand_def])
for n in nodes_to_remove_list:
remove.node.extend([copy.deepcopy(name_to_node_map[n])])
with tf.device('/gpu:0'):
tf.import_graph_def(keep, name='')
with tf.device('/cpu:0'):
tf.import_graph_def(remove, name='')
else:
# default model loading procedure
with self.detection_graph.as_default():
graph_def = tf.GraphDef()
with tf.gfile.GFile(self.config.MODEL_PATH, 'rb') as fid:
serialized_graph = fid.read()
graph_def.ParseFromString(serialized_graph)
tf.import_graph_def(graph_def, name='')
def load_category_index(self):
"""
creates categorie_index from label_map
"""
print('> Loading label map')
label_map = tf_utils.load_labelmap(self.config.LABEL_PATH)
categories = tf_utils.convert_label_map_to_categories(label_map, max_num_classes=self.config.NUM_CLASSES, use_display_name=True)
self.category_index = tf_utils.create_category_index(categories)
def get_tensor_dict(self, outputs):
"""
returns tensordict for given tensornames list
"""
ops = self.detection_graph.get_operations()
all_tensor_names = {output.name for op in ops for output in op.outputs}
self.tensor_dict = {}
for key in outputs:
tensor_name = key + ':0'
if tensor_name in all_tensor_names:
self.tensor_dict[key] = self.detection_graph.get_tensor_by_name(tensor_name)
return self.tensor_dict
def prepare_model(self):
"""
first step prepare model
needs to be called by subclass in re-write process
Necessary: subclass needs to init
self._input_stream
"""
if self.config.MODEL_TYPE is 'od':
self.download_model()
self.load_frozen_graph()
self.load_category_index()
elif self.config.MODEL_TYPE is 'dl':
self.download_model()
self.load_frozen_graph()
self.fps = FPS(self.config.FPS_INTERVAL).start()
self._visualizer = Visualizer(self.config).start()
return self
def isActive(self):
"""
checks if stream and visualizer are active
"""
return self._input_stream.isActive() and self._visualizer.isActive()
def stop(self):
"""
stops all Model sub classes
"""
self._input_stream.stop()
self._visualizer.stop()
self.fps.stop()
if self.config.SPLIT_MODEL and self.config.MODEL_TYPE is 'od':
self._gpu_worker.stop()
self._cpu_worker.stop()
def detect(self):
"""
needs to be written by subclass
"""
self.detection = None
def run(self):
"""
runs detection loop on video or image
listens on isActive()
"""
print("> starting detection")
self.start()
while self.isActive():
# detection
self.detect()
# Visualization
if not self._wait_thread:
self.visualize_detection()
self.fps.update()
self.stop()
def start(self):
"""
starts fps and visualizer class
"""
self.fps.start()
self._visualizer = Visualizer(self.config).start()
def visualize_detection(self):
self.detection = self._visualizer.visualize_detection(self.frame,self.boxes,
self.classes,self.scores,
self.masks,self.fps.fps_local(),
self.category_index,self._is_imageD)
def prepare_ros(self,node):
"""
prepares ros Node and ROSInputstream
only in ros branch usable due to ROS realted package stuff
"""
assert node in ['detection_node','deeplab_node'], "only 'detection_node' and 'deeplab_node' supported"
import rospy
from ros import ROSStream, DetectionPublisher, SegmentationPublisher
self._is_rosD = True
rospy.init_node(node)
self._input_stream = ROSStream(self.config.ROS_INPUT)
if node is 'detection_node':
self._ros_publisher = DetectionPublisher()
if node is 'deeplab_node':
self._ros_publisher = SegmentationPublisher()
# check for frame
while True:
self.frame = self._input_stream.read()
time.sleep(1)
print("...waiting for ROS image")
if self.frame is not None:
self.stream_height,self.stream_width = self.frame.shape[0:2]
break
def prepare_timeliner(self):
"""
prepares timeliner and sets tf Run options
"""
self._run_options = tf.RunOptions(trace_level=tf.RunOptions.FULL_TRACE)
self._run_metadata = tf.RunMetadata()
self.timeliner = TimeLiner()
def prepare_tracker(self):
"""
prepares KCF tracker
"""
sys.path.append(os.getcwd()+'/rod/kcf')
import KCF
self._tracker = KCF.kcftracker(False, True, False, False)
self._tracker_counter = 0
self._track = False
def run_tracker(self):
"""
runs KCF tracker on videoStream frame
!does not work on images, obviously!
"""
self.frame = self._input_stream.read()
if self._first_track:
self._trackers = []
self._tracker_boxes = self.boxes
num_tracked = 0
for box in self.boxes[~np.all(self.boxes == 0, axis=1)]:
self._tracker.init(conv_detect2track(box,self._input_stream.real_width,
self._input_stream.real_height),self.tracker_frame)
self._trackers.append(self._tracker)
num_tracked += 1
if num_tracked <= self.config.NUM_TRACKERS:
break
self._first_track = False
for idx,self._tracker in enumerate(self._trackers):
tracker_box = self._tracker.update(self.frame)
self._tracker_boxes[idx,:] = conv_track2detect(tracker_box,
self._input_stream.real_width,
self._input_stream.real_height)
self._tracker_counter += 1
self.boxes = self._tracker_boxes
# Deactivate Tracker
if self._tracker_counter >= self.config.TRACKER_FRAMES:
self._track = False
self._tracker_counter = 0
def activate_tracker(self):
"""
activates KCF tracker
deactivates mask detection
"""
#self.masks = None
self.tracker_frame = self.frame
self._track = True
self._first_track = True
class Model(object):
"""
Base Tensorflow Inference Model Class
"""
def __init__(self, config):
self.config = config
self.detection_graph = tf.Graph()
self.category_index = None
self.masks = None
self._tf_config = tf.ConfigProto(allow_soft_placement=True)
self._tf_config.gpu_options.allow_growth = True
self._run_options = tf.RunOptions(trace_level=tf.RunOptions.NO_TRACE)
self._run_metadata = False
self._wait_thread = False
print('> Model: {}'.format(self.config.MODEL_PATH))
def download_model(self):
"""
downlaods model from model_zoo
"""
if self.config.MODEL_TYPE == 'dl':
download_base = 'http://download.tensorflow.org/models/'
elif self.config.MODEL_TYPE == 'od':
download_base = 'http://download.tensorflow.org/models/object_detection/'
model_file = self.config.MODEL_NAME + '.tar.gz'
if not os.path.isfile(
self.config.MODEL_PATH) and self.config.DOWNLOAD_MODEL:
print('> Model not found. Downloading it now.')
opener = urllib.request.URLopener()
opener.retrieve(download_base + model_file, model_file)
tar_file = tarfile.open(model_file)
for file in tar_file.getmembers():
file_name = os.path.basename(file.name)
if 'frozen_inference_graph.pb' in file_name:
tar_file.extract(file, os.getcwd() + '/models/')
os.remove(os.getcwd() + '/' + model_file)
else:
print('> Model found. Proceed.')
def _node_name(self, n):
if n.startswith("^"):
return n[1:]
else:
return n.split(":")[0]
def load_frozenmodel(self):
"""
loads graph from frozen model file
"""
print('> Loading frozen model into memory')
if (self.config.MODEL_TYPE == 'od' and self.config.SPLIT_MODEL):
# load a frozen Model and split it into GPU and CPU graphs
# Hardcoded split points for ssd_mobilenet
input_graph = tf.Graph()
with tf.Session(graph=input_graph, config=self._tf_config):
if self.config.SSD_SHAPE == 600:
shape = 7326
else:
shape = 1917
self.score = tf.placeholder(tf.float32,
shape=(None, shape,
self.config.NUM_CLASSES),
name=self.config.SPLIT_NODES[0])
self.expand = tf.placeholder(tf.float32,
shape=(None, shape, 1, 4),
name=self.config.SPLIT_NODES[1])
for node in input_graph.as_graph_def().node:
if node.name == self.config.SPLIT_NODES[0]:
score_def = node
if node.name == self.config.SPLIT_NODES[1]:
expand_def = node
with self.detection_graph.as_default():
od_graph_def = tf.GraphDef()
with tf.gfile.GFile(self.config.MODEL_PATH, 'rb') as fid:
serialized_graph = fid.read()
od_graph_def.ParseFromString(serialized_graph)
edges = {}
name_to_node_map = {}
node_seq = {}
seq = 0
for node in od_graph_def.node:
n = self._node_name(node.name)
name_to_node_map[n] = node
edges[n] = [self._node_name(x) for x in node.input]
node_seq[n] = seq
seq += 1
for d in self.config.SPLIT_NODES:
assert d in name_to_node_map, "%s is not in graph" % d
nodes_to_keep = set()
next_to_visit = self.config.SPLIT_NODES[:]
while next_to_visit:
n = next_to_visit[0]
del next_to_visit[0]
if n in nodes_to_keep: continue
nodes_to_keep.add(n)
next_to_visit += edges[n]
nodes_to_keep_list = sorted(list(nodes_to_keep),
key=lambda n: node_seq[n])
nodes_to_remove = set()
for n in node_seq:
if n in nodes_to_keep_list: continue
nodes_to_remove.add(n)
nodes_to_remove_list = sorted(list(nodes_to_remove),
key=lambda n: node_seq[n])
keep = graph_pb2.GraphDef()
for n in nodes_to_keep_list:
keep.node.extend([copy.deepcopy(name_to_node_map[n])])
remove = graph_pb2.GraphDef()
remove.node.extend([score_def])
remove.node.extend([expand_def])
for n in nodes_to_remove_list:
remove.node.extend(
[copy.deepcopy(name_to_node_map[n])])
with tf.device('/gpu:0'):
tf.import_graph_def(keep, name='')
with tf.device('/cpu:0'):
tf.import_graph_def(remove, name='')
else:
# default model loading procedure
with self.detection_graph.as_default():
od_graph_def = tf.GraphDef()
with tf.gfile.GFile(self.config.MODEL_PATH, 'rb') as fid:
serialized_graph = fid.read()
od_graph_def.ParseFromString(serialized_graph)
tf.import_graph_def(od_graph_def, name='')
def load_labelmap(self):
"""
creates categorie_index from label_map
"""
print('> Loading label map')
label_map = tf_utils.load_labelmap(self.config.LABEL_PATH)
categories = tf_utils.convert_label_map_to_categories(
label_map,
max_num_classes=self.config.NUM_CLASSES,
use_display_name=True)
self.category_index = tf_utils.create_category_index(categories)
def get_tensordict(self, outputs):
"""
returns tensordict for given tensornames list
"""
ops = self.detection_graph.get_operations()
all_tensor_names = {output.name for op in ops for output in op.outputs}
self.tensor_dict = {}
for key in outputs:
tensor_name = key + ':0'
if tensor_name in all_tensor_names:
self.tensor_dict[
key] = self.detection_graph.get_tensor_by_name(tensor_name)
return self.tensor_dict
def prepare_model(self):
"""
first step prepare model
needs to be called by subclass in re-write process
Necessary: subclass needs to init
self._input_stream
"""
if self.config.MODEL_TYPE is 'od':
self.download_model()
self.load_frozenmodel()
self.load_labelmap()
elif self.config.MODEL_TYPE is 'dl':
self.download_model()
self.load_frozenmodel()
self.fps = FPS(self.config.FPS_INTERVAL).start()
self._visualizer = Visualizer(self.config).start()
return self
def isActive(self):
"""
checks if stream and visualizer are active
"""
return self._input_stream.isActive() and self._visualizer.isActive()
def stop(self):
"""
stops all sub classes
"""
self._input_stream.stop()
self._visualizer.stop()
self.fps.stop()
if self.config.SPLIT_MODEL and self.config.MODEL_TYPE is 'od':
self._gpu_worker.stop()
self._cpu_worker.stop()
def detect(self):
"""
needs to be written by subclass
"""
self.detection = None
def run(self):
"""
runs detection loop on video or image
listens on isActive()
"""
print("> starting detection")
self.start()
while self.isActive():
# detection
self.detect()
# Visualization
if not self._wait_thread:
self.visualize_detection()
self.fps.update()
self.stop()
def start(self):
"""
starts fps and visualizer class
"""
self.fps.start()
self._visualizer = Visualizer(self.config).start()
def visualize_detection(self):
self.detection = self._visualizer.visualize_detection(
self.frame, self.boxes, self.classes, self.scores, self.masks,
self.fps.fps_local(), self.category_index)
