def car_dir(tmpdir_factory, base_config, imu_fields) -> str:
""" Creating car dir with sub dirs and extracting tub """
car_dir = tmpdir_factory.mktemp('mycar')
os.mkdir(os.path.join(car_dir, 'models'))
# extract tub.tar.gz into car_dir/tub
this_dir = os.path.dirname(os.path.abspath(__file__))
with tarfile.open(os.path.join(this_dir, 'tub', 'tub.tar.gz')) as file:
file.extractall(car_dir)
# now create a second tub with additonal imu data
tub_dir = os.path.join(car_dir, 'tub')
tub = Tub(base_path=tub_dir)
full_dir = os.path.join(car_dir, 'tub_full')
tub_full = Tub(base_path=full_dir,
inputs=tub.manifest.inputs + imu_fields +
['behavior/one_hot_state_array', 'localizer/location'],
types=tub.manifest.types + ['float'] * 6 + ['list', 'int'])
count = 0
for record in tub:
t = TubRecord(base_config, tub.base_path, record)
img = t.image()
record['cam/image_array'] = img
for field in imu_fields:
record[field] = np.random.rand()
# add behavioural input
bhv = [1., 0.] if count < len(tub) // 2 else [0., 1.]
record["behavior/one_hot_state_array"] = bhv
record['localizer/location'] = 3 * count // len(tub)
tub_full.write_record(record)
count += 1
return car_dir
class TestTub(unittest.TestCase):
def setUp(self):
self._path = tempfile.mkdtemp()
inputs = ['input']
types = ['int']
self.tub = Tub(self._path, inputs, types)
def test_basic_tub_operations(self):
entries = list(self.tub)
self.assertEqual(len(entries), 0)
write_count = 10
delete_indexes = [0, 8]
records = [{'input': i} for i in range(write_count)]
for record in records:
self.tub.write_record(record)
for index in delete_indexes:
self.tub.delete_records(index)
count = 0
for record in self.tub:
print('Record %s' % (record))
count += 1
self.assertEqual(count, (write_count - len(delete_indexes)))
self.assertEqual(len(self.tub), (write_count - len(delete_indexes)))
def tearDown(self):
shutil.rmtree(self._path)
def run(self, args, parser):
'''
Load the images from a tub and create a movie from them.
Movie
'''
if args.tub is None:
print("ERR>> --tub argument missing.")
parser.print_help()
return
conf = os.path.expanduser(args.config)
if not os.path.exists(conf):
print("No config file at location: %s. Add --config to specify\
location or run from dir containing config.py." % conf)
return
self.cfg = dk.load_config(conf)
if args.type is None and args.model is not None:
args.type = self.cfg.DEFAULT_MODEL_TYPE
print("Model type not provided. Using default model type from config file")
if args.salient:
if args.model is None:
print("ERR>> salient visualization requires a model. Pass with the --model arg.")
parser.print_help()
if args.type not in ['linear', 'categorical']:
print("Model type {} is not supported. Only linear or categorical is supported for salient visualization".format(args.type))
parser.print_help()
return
self.tub = Tub(args.tub)
start = args.start
self.end_index = args.end if args.end != -1 else len(self.tub)
num_frames = self.end_index - start
# Move to the correct offset
self.current = 0
self.iterator = self.tub.__iter__()
while self.current < start:
self.iterator.next()
self.current += 1
self.scale = args.scale
self.keras_part = None
self.do_salient = False
self.user = args.draw_user_input
if args.model is not None:
self.keras_part = get_model_by_type(args.type, cfg=self.cfg)
self.keras_part.load(args.model)
if args.salient:
self.do_salient = self.init_salient(self.keras_part.model)
print('making movie', args.out, 'from', num_frames, 'images')
clip = mpy.VideoClip(self.make_frame, duration=((num_frames - 1) / self.cfg.DRIVE_LOOP_HZ))
clip.write_videofile(args.out, fps=self.cfg.DRIVE_LOOP_HZ)
def convert_to_tub_v2(paths, output_path):
"""
Convert from old tubs to new one
:param paths: legacy tub paths
:param output_path: new tub output path
:return: None
"""
empty_record = {'__empty__': True}
if type(paths) is str:
paths = [paths]
legacy_tubs = [LegacyTub(path) for path in paths]
print(f'Total number of tubs: {len(legacy_tubs)}')
for legacy_tub in legacy_tubs:
# add input and type for empty records recording
inputs = legacy_tub.inputs + ['__empty__']
types = legacy_tub.types + ['boolean']
output_tub = Tub(output_path, inputs, types,
list(legacy_tub.meta.items()))
record_paths = legacy_tub.gather_records()
bar = IncrementalBar('Converting', max=len(record_paths))
previous_index = None
for record_path in record_paths:
try:
contents = Path(record_path).read_text()
record = json.loads(contents)
image_path = record['cam/image_array']
ms = record['milliseconds']
current_index = int(image_path.split('_')[0])
image_path = os.path.join(legacy_tub.path, image_path)
image_data = Image.open(image_path)
record['cam/image_array'] = image_data
# first record or they are continuous, just append
if not previous_index or current_index == previous_index + 1:
output_tub.write_record(record, ms)
previous_index = current_index
# otherwise fill the gap with empty records
else:
# Skipping over previous record here because it has
# already been written.
previous_index += 1
# Adding empty record nodes, and marking them deleted
# until the next valid record.
delete_list = []
while previous_index < current_index:
idx = output_tub.manifest.current_index
output_tub.write_record(empty_record, ms)
delete_list.append(idx)
previous_index += 1
output_tub.delete_records(delete_list)
bar.next()
except Exception as exception:
print(f'Ignoring record path {record_path}\n', exception)
traceback.print_exc()
# writing session id into manifest metadata
output_tub.close()
def clips_of_tub(self, tub_path):
tub = Tub(tub_path)
clips = []
for record in tub:
index = record['_index']
images_relative_path = os.path.join(Tub.images(),
record['cam/image_array'])
record['cam/image_array'] = images_relative_path
clips.append(record)
return [clips]
def benchmark():
# Change to a non SSD storage path
path = Path('/media/rahulrav/Cruzer/benchmark')
# Recreate paths
if os.path.exists(path.absolute().as_posix()):
shutil.rmtree(path)
inputs = ['input']
types = ['int']
tub = Tub(path.as_posix(), inputs, types, max_catalog_len=1000)
write_count = 1000
for i in range(write_count):
record = {'input': i}
tub.write_record(record)
deletions = np.random.randint(0, write_count, 100)
for index in deletions:
index = int(index)
tub.delete_record(index)
for record in tub:
print('Record %s' % record)
tub.close()
def __init__(self, path):
DriveFormat.__init__(self)
if not os.path.exists(path):
raise IOError(
"Tubv2Format directory does not exist: {}".format(path))
if not os.path.isdir(path):
raise IOError(
"Tubv2Format path is not a directory: {}".format(path))
self.path = path
self.tub = Tub(path, read_only=False)
self.meta = self.tub.manifest.metadata # Bug. tub.metadata doesn't get updated with info from disc
self.deleted_indexes = self.tub.manifest.deleted_indexes
print(f"Deleted: {self.deleted_indexes}")
self.edit_list = set()
self.shape = None
def __init__(self, tub_paths, test_size=0.2, shuffle=True):
self.tub_paths = tub_paths
self.test_size = test_size
self.shuffle = shuffle
self.tubs = [
Tub(tub_path, read_only=True) for tub_path in self.tub_paths
]
self.records = list()
def dataframe_from_tubs(tubs):
dfs = []
for tub in tubs:
df = pd.DataFrame(tub)
name = Path(tub.base_path).name
pref = os.path.join(tub.base_path, Tub.images()) + "/"
df["cam/image_array"] = pref + df["cam/image_array"]
dfs.append(df)
#print( f"Tub {name}: {df['user/throttle'].min()} - {df['user/throttle'].max()}" )
return pd.concat(dfs)
def __init__(self,
config: Config,
tub_paths: List[str],
shuffle: bool = True) -> None:
self.config = config
self.tub_paths = tub_paths
self.shuffle = shuffle
self.tubs: List[Tub] = [
Tub(tub_path, read_only=True) for tub_path in self.tub_paths
]
self.records: List[TubRecord] = list()
def post(self, tub_id):
tub_path = os.path.join(self.data_path, tub_id)
tub = Tub(tub_path)
old_clips = self.clips_of_tub(tub_path)
new_clips = tornado.escape.json_decode(self.request.body)
import itertools
old_frames = list(itertools.chain(*old_clips))
old_indexes = set()
for frame in old_frames:
old_indexes.add(frame['_index'])
new_frames = list(itertools.chain(*new_clips['clips']))
new_indexes = set()
for frame in new_frames:
new_indexes.add(frame['_index'])
frames_to_delete = [
index for index in old_indexes if index not in new_indexes
]
tub.delete_records(frames_to_delete)
def __init__(self,
config: Config,
tub_paths: List[str],
shuffle: bool = True) -> None:
self.config = config
self.tub_paths = tub_paths
self.shuffle = shuffle
self.tubs: List[Tub] = [
Tub(tub_path, read_only=True) for tub_path in self.tub_paths
]
self.records: List[TubRecord] = list()
self.train_filter = getattr(config, 'TRAIN_FILTER', None)
def update_tub(self, reload=False):
if not self.base_path or not self.app.config_loader.config:
return
if not os.path.exists(os.path.join(self.base_path, 'manifest.json')):
self.app.update_status(
f'Path {self.base_path} is not a valid tub.')
return
try:
self.tub = Tub(self.base_path)
except Exception as e:
self.app.update_status(f'Failed loading tub: {str(e)}')
return
# Use filter, this defines the function
def select(underlying):
if self.app.tub_manipulator.filter_expression is None:
return True
else:
record = TubRecord(self.app.config_loader.config,
self.tub.base_path, underlying)
res = eval(self.app.tub_manipulator.filter_expression)
return res
self.records = [
TubRecord(self.app.config_loader.config, self.tub.base_path,
record) for record in self.tub if select(record)
]
self.len = len(self.records)
self.state.i = 0
self.label.config(text=self.base_path)
if self.len > 0:
self.state.record = self.records[self.state.i]
# update app components, manipulator, slider and plot
self.app.tub_manipulator.set_lr(is_l=True)
self.app.tub_manipulator.set_lr(is_l=False)
# clear bars for new tub only but not for reloading existing tub
if not reload:
self.app.data_panel.clear()
self.app.slider.slider.configure(to=self.len - 1)
# update graph
self.app.data_plot.update_dataframe_from_tub()
msg = f'Loaded tub {self.base_path} with {self.len} records'
else:
msg = f'No records in tub {self.base_path}'
if self.app.tub_manipulator.record_filter:
msg += f' using filter {self.app.tub_manipulator.record_filter}'
self.app.update_status(msg)
def update_tub(self, event=None):
if not self.file_path:
return False
# If config not yet loaded return
cfg = tub_screen().ids.config_manager.config
if not cfg:
return False
# At least check if there is a manifest file in the tub path
if not os.path.exists(os.path.join(self.file_path, 'manifest.json')):
tub_screen().status(f'Path {self.file_path} is not a valid tub.')
return False
try:
self.tub = Tub(self.file_path)
except Exception as e:
tub_screen().status(f'Failed loading tub: {str(e)}')
return False
# Check if filter is set in tub screen
expression = tub_screen().ids.tub_filter.filter_expression
# Use filter, this defines the function
def select(underlying):
if not expression:
return True
else:
try:
record = TubRecord(cfg, self.tub.base_path, underlying)
res = eval(expression)
return res
except KeyError as err:
Logger.error(f'Filter: {err}')
return True
self.records = [TubRecord(cfg, self.tub.base_path, record)
for record in self.tub if select(record)]
self.len = len(self.records)
if self.len > 0:
tub_screen().index = 0
tub_screen().ids.data_plot.update_dataframe_from_tub()
msg = f'Loaded tub {self.file_path} with {self.len} records'
else:
msg = f'No records in tub {self.file_path}'
if expression:
msg += f' using filter {tub_screen().ids.tub_filter.record_filter}'
tub_screen().status(msg)
return True
def tubs_from_directory(tub_dir, verbose=False):
""" Load all tubs in the given directory """
tubs = []
count = 0
root_path = Path(tub_dir)
for item in root_path.iterdir():
if item.is_dir():
try:
t = Tub(str(item), read_only=True)
count += len(t)
except FileNotFoundError as ex:
continue
except ValueError as ex:
# In case the catalog file is empty
continue
tubs.append(t)
if verbose:
print(f"Loaded {count} records.")
return tubs
def tubs_from_filelist(file_list, verbose=False):
""" Load all tubs listed in all files in file_list """
tub_dirs = preprocessFileList(file_list)
tubs = []
count = 0
root_path = Path("data")
for item in tub_dirs:
if Path(item).is_dir():
try:
t = Tub(str(item), read_only=True)
except FileNotFoundError as ex:
continue
except ValueError as ex:
# In case the catalog file is empty
continue
tubs.append(t)
count += len(t)
if verbose:
print(f"Loaded {count} records.")
return tubs
def __init__(self, config: Any, tub_paths: List[str], transform=None):
"""Create a PyTorch Lightning Data Module to contain all data loading logic
Args:
config (object): the configuration information
tub_paths (List[str]): a list of paths to the tubs to use (minimum size of 1).
Each tub path corresponds to another training run.
transform (function, optional): a transform to apply to the data
"""
super().__init__()
self.config = config
self.tub_paths = tub_paths
# Handle the transforms
if transform:
self.transform = transform
else:
self.transform = get_default_transform()
self.tubs: List[Tub] = [
Tub(tub_path, read_only=True) for tub_path in self.tub_paths
]
self.records: List[TubRecord] = []
def plot_predictions(self, cfg, tub_paths, model_path, limit, model_type):
'''
Plot model predictions for angle and throttle against data from tubs.
'''
import matplotlib.pyplot as plt
import pandas as pd
model_path = os.path.expanduser(model_path)
model = dk.utils.get_model_by_type(model_type, cfg)
# This just gets us the text for the plot title:
if model_type is None:
model_type = cfg.DEFAULT_MODEL_TYPE
model.load(model_path)
user_angles = []
user_throttles = []
pilot_angles = []
pilot_throttles = []
from donkeycar.parts.tub_v2 import Tub
from pathlib import Path
base_path = Path(os.path.expanduser(tub_paths)).absolute().as_posix()
tub = Tub(base_path)
records = list(tub)
records = records[:limit]
bar = IncrementalBar('Inferencing', max=len(records))
for record in records:
img_filename = os.path.join(base_path, Tub.images(),
record['cam/image_array'])
img = load_image(img_filename, cfg)
user_angle = float(record["user/angle"])
user_throttle = float(record["user/throttle"])
pilot_angle, pilot_throttle = model.run(img)
user_angles.append(user_angle)
user_throttles.append(user_throttle)
pilot_angles.append(pilot_angle)
pilot_throttles.append(pilot_throttle)
bar.next()
angles_df = pd.DataFrame({
'user_angle': user_angles,
'pilot_angle': pilot_angles
})
throttles_df = pd.DataFrame({
'user_throttle': user_throttles,
'pilot_throttle': pilot_throttles
})
fig = plt.figure()
title = "Model Predictions\nTubs: " + tub_paths + "\nModel: " + model_path + "\nType: " + model_type
fig.suptitle(title)
ax1 = fig.add_subplot(211)
ax2 = fig.add_subplot(212)
angles_df.plot(ax=ax1)
throttles_df.plot(ax=ax2)
ax1.legend(loc=4)
ax2.legend(loc=4)
plt.savefig(model_path + '_pred.png')
plt.show()
def setUp(self):
self._path = tempfile.mkdtemp()
inputs = ['input']
types = ['int']
self.tub = Tub(self._path, inputs, types)
def setUpClass(cls) -> None:
cls._path = tempfile.mkdtemp()
inputs = ['input']
types = ['int']
cls.tub = Tub(cls._path, inputs, types)
class Tubv2Format(DriveFormat):
""" A class to represent a DonkeyCar Tub v2 on disc.
Current assumptions:
Tub records are 1 indexed and sequential with no gaps.
We only care about editing steering and throttle.
Steering and throttle should be clipped to -1/1.
"""
def __init__(self, path):
DriveFormat.__init__(self)
if not os.path.exists(path):
raise IOError(
"Tubv2Format directory does not exist: {}".format(path))
if not os.path.isdir(path):
raise IOError(
"Tubv2Format path is not a directory: {}".format(path))
self.path = path
self.tub = Tub(path, read_only=False)
self.meta = self.tub.manifest.metadata # Bug. tub.metadata doesn't get updated with info from disc
self.deleted_indexes = self.tub.manifest.deleted_indexes
print(f"Deleted: {self.deleted_indexes}")
self.edit_list = set()
self.shape = None
def _load(self, path, image_norm=True, progress=None):
records = {}
indexes = []
images = [
] # Store images separately so we can easily write changed records back to the tub
total = len(self.tub)
for idx, rec in enumerate(self.tub):
img_path = os.path.join(self.path, self.tub.images(),
rec['cam/image_array'])
try:
img = Image.open(img_path)
img_arr = np.asarray(img)
if self.shape is None:
self.shape = img_arr.shape
except Exception as ex:
print(f"Failed to load image: {img_path}")
print(f" Exception: {ex}")
records[idx] = rec
indexes.append(idx)
images.append(img_arr)
progress(idx, total)
self.records = records
self.indexes = indexes
self.images = images
def load(self, progress=None):
self._load(self.path, progress=progress)
self.setClean()
def update_line(self, line_num, new_rec):
contents = json.dumps(new_rec, allow_nan=False, sort_keys=True)
if contents[-1] == NEWLINE:
line = contents
else:
line = f'{contents}{NEWLINE}'
self.tub.manifest.current_catalog.seekable.update_line(
line_num + 1, line)
def save(self):
if self.isClean():
return
self.tub.manifest.deleted_indexes = self.deleted_indexes
for ix in self.edit_list:
rec = self.records[ix]
self.update_line(ix, rec)
self.tub.manifest._update_catalog_metadata(update=True)
self.edit_list.clear()
self.setClean()
def count(self):
return len(self.records)
def imageForIndex(self, index):
idx = self.indexes[index]
img = self.images[idx]
if self.isIndexDeleted(index):
# This grayed out image ends up looking ugly, can't figure out why
tmp = img.mean(axis=-1, dtype=img.dtype, keepdims=False)
tmp = np.repeat(tmp[:, :, np.newaxis], 3, axis=2)
return tmp
return img
def get_angle_throttle(self, json_data):
angle = float(json_data['user/angle'])
throttle = float(json_data["user/throttle"])
# If non-valid user entries and we have pilot data (e.g. AI), use that instead.
if (0.0 == angle) and (0.0 == throttle):
if "pilot/angle" in json_data:
pa = json_data['pilot/angle']
if pa is not None:
angle = float(pa)
if "pilot/throttle" in json_data:
pt = json_data['pilot/throttle']
if pt is not None:
throttle = float(pt)
return angle, throttle
def actionForIndex(self, index):
idx = self.indexes[index]
rec = self.records[idx]
angle, throttle = self.get_angle_throttle(rec)
return [angle, throttle]
def setActionForIndex(self, new_action, index):
idx = self.indexes[index]
rec = self.records[idx]
angle, throttle = self.get_angle_throttle(rec)
old_action = [angle, throttle]
if not np.array_equal(old_action, new_action):
if (rec["user/angle"] != new_action[0]) or (rec["user/throttle"] !=
new_action[1]):
# Save the original values if not already done
if "orig/angle" not in rec:
rec["orig/angle"] = rec["user/angle"]
if "orig/throttle" not in rec:
rec["orig/throttle"] = rec["user/throttle"]
rec["user/angle"] = new_action[0]
rec["user/throttle"] = new_action[1]
self.edit_list.add(idx)
self.setDirty()
def actionForKey(self, keybind, oldAction=None):
oldAction = copy.copy(oldAction)
if keybind == 'w':
oldAction[1] += 0.1
elif keybind == 'x':
oldAction[1] -= 0.1
elif keybind == 'a':
oldAction[0] -= 0.1
elif keybind == 'd':
oldAction[0] += 0.1
elif keybind == 's':
oldAction[0] = 0.0
oldAction[1] = 0.0
else:
return None
return np.clip(oldAction, -1.0, 1.0)
def deleteIndex(self, index):
if index >= 0 and index < self.count():
index += 1
if index in self.deleted_indexes:
self.deleted_indexes.remove(index)
else:
self.deleted_indexes.add(index)
self.setDirty()
def isIndexDeleted(self, index):
if index >= 0 and index < self.count():
index += 1
return index in self.deleted_indexes
return False
def metaString(self):
#{"inputs": ["cam/image_array", "user/angle", "user/throttle", "user/mode"], "start": 1550950724.8622544, "types": ["image_array", "float", "float", "str"]}
ret = ""
for k, v in self.meta.items():
ret += "{}: {}\n".format(k, v)
return ret
def actionStats(self):
stats = defaultdict(int)
if self.count() > 0:
actions = []
for i in range(self.count()):
act = self.actionForIndex(i)
actions.append(act)
stats["Min"] = np.min(actions)
stats["Max"] = np.max(actions)
stats["Mean"] = np.mean(actions)
stats["StdDev"] = np.std(actions)
return stats
def supportsAuxData(self):
return False
def getAuxMeta(self):
return None
def addAuxData(self, meta):
return None
def auxDataAtIndex(self, auxName, index):
return None
def setAuxDataAtIndex(self, auxName, auxData, index):
return False
@classmethod
def canOpenFile(cls, path):
if not os.path.exists(path):
return False
if not os.path.isdir(path):
return False
meta_file = os.path.join(path, "manifest.json")
if not os.path.exists(meta_file):
return False
return True
@staticmethod
def defaultInputTypes():
return [{
"name": "Images",
"type": "numpy image",
"shape": (120, 160, 3)
}]
def inputTypes(self):
res = Tubv2Format.defaultInputTypes()
if self.shape is not None:
res[0]["shape"] = self.shape
return res
@staticmethod
def defaultOutputTypes():
return [{
"name": "Actions",
"type": "continuous",
"range": (-1.0, 1.0)
}]
def outputTypes(self):
res = []
for act in ["user/angle", "user/throttle"]:
display_name = act.split("/")[1]
res.append({
"name": display_name,
"type": "continuous",
"range": (-1.0, 1.0)
})
return res
class MakeMovie(object):
def run(self, args, parser):
'''
Load the images from a tub and create a movie from them.
Movie
'''
global cfg
if args.tub is None:
print("ERR>> --tub argument missing.")
parser.print_help()
return
conf = os.path.expanduser(args.config)
if not os.path.exists(conf):
print("No config file at location: %s. Add --config to specify\
location or run from dir containing config.py." % conf)
return
cfg = dk.load_config(conf)
if args.type is None and args.model is not None:
args.type = cfg.DEFAULT_MODEL_TYPE
print(
"Model type not provided. Using default model type from config file"
)
if args.salient:
if args.model is None:
print(
"ERR>> salient visualization requires a model. Pass with the --model arg."
)
parser.print_help()
#if args.type not in ['linear', 'categorical']:
# print("Model type {} is not supported. Only linear or categorical is supported for salient visualization".format(args.type))
# parser.print_help()
# return
self.tub = Tub(args.tub)
start = args.start
self.end_index = args.end if args.end != -1 else len(self.tub)
num_frames = self.end_index - start
# Move to the correct offset
self.current = 0
self.iterator = self.tub.__iter__()
while self.current < start:
self.iterator.next()
self.current += 1
self.scale = args.scale
self.keras_part = None
self.do_salient = False
self.user = args.draw_user_input
self.pilot_angle = 0.0
self.pilot_throttle = 0.0
self.pilot_score = 1.0 # used for color intensity
self.user_angle = 0.0
self.user_throttle = 0.0
self.control_score = 0.25 # used for control size
self.flag_test_pilot_angle = 1
self.flag_test_pilot_throttle = 1
self.flag_test_user_angle = 1
self.flag_test_user_throttle = 1
self.throttle_circle_pilot_angle = 0
self.throttle_circle_user_angle = 0
self.is_test = False
self.last_pilot_throttle = 0.0 # used for color transparency
self.last_user_throttle = 0.0 # used for color transparency
self.pilot_throttle_trans = 1.0 # used for color transparency
self.user_throttle_trans = 1.0 # used for color transparency
self.pilot_throttle_trans_rate = 0.25 # used for color transparency
self.user_throttle_trans_rate = 0.25 # used for color transparency
if args.model is not None:
self.keras_part = get_model_by_type(args.type, cfg=cfg)
self.keras_part.load(args.model)
if args.salient:
self.do_salient = self.init_salient(
self.keras_part.interpreter.model)
print('making movie', args.out, 'from', num_frames, 'images')
clip = mpy.VideoClip(self.make_frame,
duration=((num_frames - 1) / cfg.DRIVE_LOOP_HZ))
clip.write_videofile(args.out, fps=cfg.DRIVE_LOOP_HZ)
@staticmethod
def draw_line_into_image(angle, throttle, is_pred, img, color):
"""
is_pred:
True: from draw_model_prediction()
False: from draw_user_input()
"""
height, width, _ = img.shape
mid_h = height // 2
length = height // 4
a1 = angle * 45.0
l1 = throttle * length
mid_w = width // 2 + (-1 if is_pred else +1)
p1 = tuple((mid_w - 2, mid_h - 1))
p11 = tuple((int(p1[0] + l1 * math.cos((a1 + 270.0) * DEG_TO_RAD)),
int(p1[1] + l1 * math.sin((a1 + 270.0) * DEG_TO_RAD))))
cv2.line(img, p1, p11, color, 2)
def get_user_input(self, record, img):
"""
Get the user input from record
"""
if self.is_test:
self.user_angle_a = float(record["user/angle"])
self.user_throttle_a = float(record["user/throttle"])
else:
self.user_angle = float(record["user/angle"])
self.user_throttle = float(record["user/throttle"])
def get_model_prediction(self, img, salient_image):
"""
Get the pilot input from model prediction
"""
if self.keras_part is None:
return
#expected = tuple(self.keras_part.get_input_shape()[1:])
expected = self.keras_part.interpreter.model.inputs[0].shape[1:]
actual = img.shape
# if model expects grey-scale but got rgb, covert
if expected[2] == 1 and actual[2] == 3:
# normalize image before grey conversion
grey_img = rgb2gray(img)
actual = grey_img.shape
img = grey_img.reshape(grey_img.shape + (1, ))
if expected != actual:
print(f"expected input dim {expected} didn't match actual dim "
f"{actual}")
return
if self.is_test:
self.pilot_angle_a, self.pilot_throttle_a = self.keras_part.run(
img)
else:
self.pilot_angle, self.pilot_throttle = self.keras_part.run(img)
def draw_steering_distribution(self, img, salient_image):
"""
query the model for it's prediction, draw the distribution of
steering choices
"""
from donkeycar.parts.keras import KerasCategorical
if self.keras_part is None or type(
self.keras_part) is not KerasCategorical:
return
pred_img = normalize_image(img)
pred_img = pred_img.reshape((1, ) + pred_img.shape)
angle_binned, _ = self.keras_part.interpreter.predict(pred_img)
x = 4
dx = 4
y = cfg.IMAGE_H - 4
iArgMax = np.argmax(angle_binned)
for i in range(15):
p1 = (x, y)
p2 = (x, y - int(angle_binned[0][i] * 100.0))
if i == iArgMax:
cv2.line(salient_image, p1, p2, (255, 0, 0), 2)
else:
cv2.line(salient_image, p1, p2, (200, 200, 200), 2)
x += dx
def init_salient(self, model):
# Utility to search for layer index by name.
# Alternatively we can specify this as -1 since it corresponds to the last layer.
model.summary()
self.output_names = []
for i, layer in enumerate(model.layers):
if "dropout" not in layer.name.lower(
) and "out" in layer.name.lower():
self.output_names += [layer.name]
if len(self.output_names) == 0:
print(
"Failed to find the model layer named with 'out'. Skipping salient."
)
return False
print("####################")
print("Visualizing activations on layer:", *self.output_names)
print("####################")
# Create Saliency object.
# If `clone` is True(default), the `model` will be cloned,
# so the `model` instance will be NOT modified, but it takes a machine resources.
self.saliency = Saliency(model,
model_modifier=self.model_modifier,
clone=False)
# Create GradCAM++ object, Just only repalce class name to "GradcamPlusPlus"
self.gradcampp = GradcamPlusPlus(model,
model_modifier=self.model_modifier,
clone=False)
return True
def draw_gradcam_pp(self, img):
x = preprocess_input(img, mode='tf')
# Generate heatmap with GradCAM++
salient_map = self.gradcampp(
self.loss,
x,
penultimate_layer=-1, # model.layers number
)
return self.draw_mask(img, salient_map)
def draw_salient(self, img):
# https://github.com/keras-team/keras-applications/blob/master/keras_applications/imagenet_utils.py
x = preprocess_input(img, mode='tf')
# Generate saliency map with smoothing that reduce noise by adding noise
salient_map = self.saliency(self.loss, x)
return self.draw_mask(img, salient_map)
def draw_mask(self, img, salient_map):
if salient_map[0].size != cfg.IMAGE_W * cfg.IMAGE_H:
print("salient size failed.")
return
salient_map = salient_map[0]
salient_map = salient_map * 255
salient_mask = cv2.cvtColor(salient_map, cv2.COLOR_GRAY2RGB)
salient = cv2.applyColorMap(salient_map.astype('uint8'),
cv2.COLORMAP_JET)
salient = cv2.applyColorMap(salient, cv2.COLOR_BGR2RGB)
salient = cv2.bitwise_and(salient, salient_mask.astype('uint8'))
blend = cv2.addWeighted(img, 1.0, salient, 1.0, 0.0)
return blend
def make_frame(self, t):
'''
Callback to return an image from from our tub records.
This is called from the VideoClip as it references a time.
We don't use t to reference the frame, but instead increment
a frame counter. This assumes sequential access.
'''
if self.current >= self.end_index:
return None
rec = self.iterator.next()
img_path = os.path.join(self.tub.images_base_path,
rec['cam/image_array'])
camera_image = img_to_arr(Image.open(img_path))
salient_image = None
if self.do_salient:
salient_image = self.draw_salient(camera_image)
#salient_image = self.draw_gradcam_pp(camera_image)
salient_image = salient_image.astype('uint8')
if salient_image is None:
salient_image = camera_image
# resize
if self.scale != 1:
h, w, d = salient_image.shape
dsize = (w * self.scale, h * self.scale)
salient_image = cv2.resize(salient_image,
dsize=dsize,
interpolation=cv2.INTER_CUBIC)
# draw control
if self.keras_part is not None:
self.get_model_prediction(camera_image, salient_image)
self.draw_steering_distribution(camera_image, salient_image)
if self.user: self.get_user_input(rec, salient_image)
salient_image = self.draw_control_into_image(salient_image)
"""
# left upper text
display_str = []
display_str.append(f"pilot_angle: {self.pilot_angle:.2f}")
display_str.append(f"pilot_throttle: {self.pilot_throttle:.2f}")
self.draw_text(salient_image, display_str)
"""
self.current += 1
# returns a 8-bit RGB array
return salient_image
def model_modifier(self, m):
m.layers[-1].activation = tf.keras.activations.linear
def loss(self, output):
return (output[0])
def draw_control_into_image(self, img):
"""
test
self.pilot_score = np.random.default_rng().uniform(low=0.2, high=1.0)
self.pilot_throttle = np.random.default_rng().uniform(low=-1.0, high=1.0)
self.pilot_angle = np.random.default_rng().uniform(low=-1.0, high=1.0)
"""
if self.is_test:
if self.pilot_angle >= 1.0:
self.flag_test_pilot_angle = -0.1
elif self.pilot_angle <= -1.0:
self.flag_test_pilot_angle = +0.1
self.pilot_angle += self.flag_test_pilot_angle
if self.pilot_throttle >= 1.0:
self.flag_test_pilot_throttle = -0.01
elif self.pilot_throttle <= -1.0:
self.flag_test_pilot_throttle = +0.01
self.pilot_throttle += self.flag_test_pilot_throttle
if self.user_angle >= 1.0:
self.flag_test_user_angle = -0.05
elif self.user_angle <= -1.0:
self.flag_test_user_angle = +0.05
self.user_angle += self.flag_test_user_angle
if self.user_throttle >= 1.0:
self.flag_test_user_throttle = -0.02
elif self.user_throttle <= -1.0:
self.flag_test_user_throttle = +0.02
self.user_throttle += self.flag_test_user_throttle
#self.control_score = abs(self.pilot_throttle/4*3) + 0.25
height, width, _ = img.shape
y = height // 2
x = width // 2
# prepare ellipse mask
r_base = 6.0
r_mask = int(height // r_base)
white = np.ones_like(img) * 255
ellipse = np.zeros_like(img)
r_pilot = int(height // r_base + (height // 3.1) * self.control_score)
r_user = int(height // r_base + (height // 6.2) * self.control_score)
pilot_trans, user_trans = self.trans_make()
# draw pilot control
green = (0, int(255 * pilot_trans), 0) # green for reverse
blue = (0, 0, int(255 * pilot_trans)) # blue for reverse
self.draw_ellipse(self.pilot_angle, self.pilot_throttle, x, y, r_pilot,
ellipse, green, blue)
pilot_circle_mask = cv2.circle(
white, (int(x), int(y)),
int(r_user + (height // 10) * self.control_score), (0, 0, 0),
-1).astype('uint8')
# pilot mask
ellipse = cv2.bitwise_and(ellipse, pilot_circle_mask)
# draw user control
green = (0, int(255 * user_trans), 0) # green for reverse
blue = (0, 0, int(255 * user_trans)) # blue for reverse
orange = (255, 69, 0) # orange for reverse
self.draw_ellipse(self.user_angle, self.user_throttle, x, y, r_user,
ellipse, green, blue)
white = np.ones_like(img) * 255
user_circle_mask = cv2.circle(
white, (int(x), int(y)),
int(r_mask + (height // 10) * self.control_score), (0, 0, 0),
-1).astype('uint8')
# user mask
ellipse = cv2.bitwise_and(ellipse, user_circle_mask)
# draw circle
color1 = (0, 0, 215)
color2 = (0, 25, 78)
color3 = (0, 255, 215)
cv2.circle(ellipse, (int(x), int(y)), int(r_pilot), color1, 1)
cv2.circle(ellipse, (int(x), int(y)), int(r_user), color2, 1)
cv2.circle(ellipse, (int(x), int(y)), int(r_mask), color3, 1)
# draw dot circle
ellipse = self.draw_dot_circle2(ellipse, x, y,
r_pilot + 1 + self.scale // 4,
1 + self.scale // 4, (0, 255, 218), -1,
4 * self.scale, self.pilot_throttle,
True)
ellipse = self.draw_dot_circle2(ellipse, x, y,
r_user + 1 + self.scale // 4,
1 + self.scale // 4, (0, 255, 218), -1,
4 * self.scale, self.user_throttle,
False)
# draw speed meter
#self.draw_analog_meter(ellipse, self.pilot_speed)
self.draw_analog_direction_meter(ellipse, self.pilot_angle,
self.pilot_throttle)
ellipse = self.draw_digital_meter(ellipse,
r_mask - (2 + self.scale // 4),
self.pilot_throttle, 18 * self.scale,
pilot_trans)
ellipse = self.draw_digital_meter(
ellipse, r_mask - (2 + self.scale // 4) * 2 -
(width // 10) * self.control_score, self.user_throttle,
12 * self.scale, user_trans)
#self.draw_analog_meter(ellipse, -0.75)
#print(f"r_pilot: {r_pilot}")
# draw stripe circle
if self.pilot_throttle >= 0:
flag_pilot_throttle = 1
add_pilot_deg = 180
else:
flag_pilot_throttle = -1
add_pilot_deg = 0
if self.user_throttle >= 0:
flag_user_throttle = 1
add_user_deg = 180
else:
flag_user_throttle = -1
#add_user_deg = 0
add_user_deg = 180
"""
p1 = (x,y-flag_pilot_throttle*r_pilot)
p2 = (x,y+flag_pilot_throttle*y//10)
red = (255,0,0)
pts = self.points_rotation([p1,p2], center=(x,y), degrees=flag_pilot_throttle*self.pilot_angle*90)
cv2.line(ellipse, pts[0], pts[1], red, 2)
cv2.line(ellipse, p1, p2, red, 2)
"""
red = (255, 0, 0)
#self.draw_arc_center_line(ellipse, x,y,r_pilot+1+(height//40),r_user+(height//20)*self.control_score, red, 2, degrees=flag_pilot_throttle*self.pilot_angle*90+add_pilot_deg)
self.draw_arc_center_line(
ellipse,
x,
y,
r_user + 1 + (height // 40),
r_mask + (height // 20) * self.control_score,
red,
2,
degrees=flag_user_throttle * self.user_angle * 90 + add_user_deg)
# left upper text
"""
display_str = []
display_str.append(f"x: {x}")
display_str.append(f"y: {y}")
display_str.append(f"r_pilot: {r_pilot}")
display_str.append(f"angle: {self.pilot_angle:.2f}")
display_str.append(f"throttle: {self.pilot_throttle:.2f}")
self.draw_text(ellipse, display_str)
"""
# blur
if self.scale <= 3:
ellipse = cv2.GaussianBlur(ellipse, (3, 3), 0)
else:
ellipse = cv2.GaussianBlur(ellipse, (5, 5), 0)
self.last_pilot_throttle = self.pilot_throttle
self.last_user_throttle = self.user_throttle
return cv2.addWeighted(img, 1.0, ellipse, 1.0, 0.0)
def trans_make(self):
if self.pilot_throttle != self.last_pilot_throttle:
if self.pilot_throttle_trans >= 0.8:
self.pilot_throttle_trans_rate = -0.25
elif self.pilot_throttle_trans <= 0.3:
self.pilot_throttle_trans_rate = +0.25
self.pilot_throttle_trans += self.pilot_throttle_trans_rate
else:
self.pilot_throttle_trans = 1.0
if self.user_throttle != self.last_user_throttle:
if self.user_throttle_trans >= 0.8:
self.user_throttle_trans_rate = -0.25
elif self.user_throttle_trans <= 0.3:
self.user_throttle_trans_rate = +0.25
self.user_throttle_trans += self.user_throttle_trans_rate
else:
self.user_throttle_trans = 1.0
return self.pilot_throttle_trans, self.user_throttle_trans
def draw_analog_meter(self, img, value):
height, width, _ = img.shape
y = height // 2
x = width // 2
r_base = 6.0
r_pilot = int(height // r_base + (height // 3.1) * self.control_score)
red = (255, 0, 0)
p1 = (x, y - r_pilot)
p2 = (x, y + y // 10)
pts = self.points_rotation([p1, p2],
center=(x, y),
degrees=value * 180 - 90)
cv2.line(img, tuple(pts[0]), tuple(pts[1]), red, 2)
def draw_analog_direction_meter(self, img, angle, throttle):
height, width, _ = img.shape
y = height // 2
x = width // 2
r_base = 6.0
r_pilot = int(height // r_base + (height // 3.1) * self.control_score)
red = (255, 0, 0)
p1 = (x, y - r_pilot)
p2 = (x, y + y // 10)
if throttle >= 0:
flag_throttle = 1
add_deg = 0
else:
flag_throttle = -1
#add_deg = 180
add_deg = 0
pts = self.points_rotation([p1, p2],
center=(x, y),
degrees=flag_throttle * angle * 90 +
add_deg)
cv2.line(img, tuple(pts[0]), tuple(pts[1]), red, 2)
def draw_arc_center_line(self, img, x, y, r1, r2, color, thickness,
degrees):
base_point1 = np.array([0, r1])
base_point2 = np.array([0, r2])
rot = self.rot(degrees)
p1 = np.dot(
rot,
base_point1) # NEVER DO .astype('uint8'). x,y is more than 255.
p2 = np.dot(rot, base_point2)
cv2.line(img, (int(p1[0] + x), int(p1[1] + y)),
(int(p2[0] + x), int(p2[1] + y)), color, thickness)
def color_make(self, value):
"""
Rainbow color maker.
value: -1.0 to 1.0
abs(value) 0.0: blue
abs(value) 0.5: green
abs(value) 1.0: red
"""
value = abs(value)
if value > 1:
value = 1
c = int(255 * value)
c1 = int(255 * (value * 2 - 0.5))
c05 = int(255 * value * 2)
if c > 255:
c = 255
elif c < 0:
c = 0
if c1 > 255:
c1 = 255
elif c1 < 0:
c1 = 0
if c05 > 255:
c05 = 255
elif c05 < 0:
c05 = 0
if 0 <= value and value < 0.5:
color = (0, c05, 255 - c05) # blue -> green
elif 0.5 <= value and value <= 1.0:
color = (c1, c05 - c1, 0) # green -> red
elif 1.0 < value:
color = (255, 0, 0) # red
return color
def draw_digital_meter(self, img, r_mask, value, num, trans):
"""
Rainbow digital throttle meter.
img: image to draw
r_mask: circumferential radius
value: -1.0 to 1.0
num: number of boxes
trans: when the value is changed, boxes transparency is changed with this value
"""
if num > 36:
num = 36
height, width, _ = img.shape
y = height // 2
x = width // 2
h = (height // 20) * self.control_score
w = (width // 10) * self.control_score
base_points = np.array([[r_mask, h / 2], [r_mask, -h / 2],
[-w + r_mask, -h / 2], [-w + r_mask, h / 2]])
dot_angle = 360.0 / num
center = np.atleast_2d((x, y))
start_angle = 145
mask_img = np.zeros_like(img)
meter_img = np.zeros_like(img)
self.draw_digital_mask(value, x, y, r_mask, mask_img)
for i in range(0, num):
deg = i * dot_angle + start_angle
box = self.points_rotation(base_points, center=(0, 0), degrees=deg)
box = ((box.T + center.T).T)
if i == 0:
color = (0, 0, 255 * trans)
else:
if value >= 0:
color = self.color_make(i * dot_angle / 270)
else:
color = self.color_make((360 - i * dot_angle) / 270)
color = (color[0] * trans, color[1] * trans, color[2] * trans)
cv2.fillPoly(meter_img, np.array([box], dtype=np.int32), color)
meter_img = cv2.bitwise_and(meter_img.astype('uint8'),
mask_img.astype('uint8'))
img = cv2.bitwise_or(img, meter_img.astype('uint8'))
return img
def draw_dot_circle(self, img, x, y, r, cr, color, thickness, num):
"""
Draw outer dot circle.
"""
if num > 36:
num = 36
base_point = np.array([r, 0])
dot_angle = 360.0 / num
for i in range(0, num):
deg = i * dot_angle
rot = self.rot(deg)
rotated = np.dot(rot, base_point)
img = cv2.circle(img, (int(rotated[0] + x), int(rotated[1] + y)),
cr, color, thickness).astype('uint8')
return img
def draw_dot_circle2(self, img, x, y, r, cr, color, thickness, num,
throttle, is_pilot):
"""
Draw outer dot circle.
This circle rotates according to the throttle.
"""
if num > 36:
num = 36
dot_angle = 360.0 / num
rot_spd = throttle * dot_angle
if rot_spd > dot_angle / 2.0: # rotation speed limit
rot_spd = dot_angle / 2.0
elif rot_spd < -dot_angle / 2.0:
rot_spd = -dot_angle / 2.0
if is_pilot:
self.throttle_circle_pilot_angle += rot_spd
start_angle = self.throttle_circle_pilot_angle
else:
self.throttle_circle_user_angle += rot_spd
start_angle = self.throttle_circle_user_angle
rot = self.rot(start_angle)
base_point = np.dot(rot, np.array([r, 0]))
throttle = abs(throttle)
for i in range(0, num):
deg = i * dot_angle
rot = self.rot(deg)
rotated = np.dot(rot, base_point)
color = self.color_make(throttle)
img = cv2.circle(img, (int(rotated[0] + x), int(rotated[1] + y)),
cr, color, thickness).astype('uint8')
#print(f'i: {i}, deg: {deg}, (x,y): ({int(rotated[0]+x),int(rotated[1]+y)})')
return img
def rot(self, degrees):
rad = np.deg2rad(degrees)
return np.array([[np.cos(rad), -np.sin(rad)],
[np.sin(rad), np.cos(rad)]])
def points_rotation_test(self, pts, center=(0, 0), degrees=0):
"""
the same as points_rotation()
"""
res = None
for pt in pts:
base_point = np.array([pt[0] - center[0], pt[1] - center[1]])
rot = self.rot(degrees)
p = np.dot(rot, base_point)
p = (int(p[0] + center[0]), int(p[1] + center[1]))
if res is None:
res = p
else:
res = np.vstack((res, p))
return res
def points_rotation(self, pts, center=(0, 0), degrees=0):
"""
https://stackoverflow.com/questions/34372480/rotate-point-about-another-point-in-degrees-python
This function rotates the polygon coordinates.
pts: 2D polygon coordinates
center: Center coordinates of rotation
degrees: angle
"""
R = self.rot(degrees)
o = np.atleast_2d(center)
pts = np.atleast_2d(pts)
return np.squeeze((R @ (pts.T - o.T) + o.T).T).astype(
'int32'
) # 'int16' or more. x,y is larger than 255. cv2.fillPoly required int32
def draw_ellipse(self, angle, throttle, x, y, r, img, color,
reverse_color):
"""
Draw the outer arc.
"""
angle_deg = int(throttle * 270)
if throttle < 0:
center_deg = +90 + abs(angle_deg / 2)
color = reverse_color
else:
center_deg = -90 - abs(angle_deg / 2)
if throttle < 0:
angle = angle * -1.0
rotate_deg = int(angle * 90) + center_deg
cv2.ellipse(img, (int(x), int(y)), (int(r), int(r)), rotate_deg, 0,
angle_deg, color, -1)
def draw_digital_mask(self, throttle, x, y, r, img):
"""
throttle: -1.0 to 1.0
x: x coordinate in the center of the image
y: y coordinate in the center of the image
r: radius of arc
img: mask image
"""
angle_deg = int(throttle * 270) # ellipse angle
rotate_deg = 145 # ellipse start position
color = (255, 255, 255)
cv2.ellipse(img, (int(x), int(y)), (int(r), int(r)), rotate_deg, 0,
angle_deg, color, -1)
def draw_text(self, img, display_str=[]):
""" STATISTICS FONT """
fontScale = img.shape[0] / 1000.0
if fontScale < 0.4:
fontScale = 0.4
fontThickness = 1 + int(fontScale)
fontFace = cv2.FONT_HERSHEY_SIMPLEX
max_text_width = 0
max_text_height = 0
""" DRAW BLACK BOX AND TEXT """
[(text_width, text_height),
baseLine] = cv2.getTextSize(text=display_str[0],
fontFace=fontFace,
fontScale=fontScale,
thickness=fontThickness)
x_left = int(baseLine)
y_top = int(baseLine)
for i in range(len(display_str)):
[(text_width, text_height),
baseLine] = cv2.getTextSize(text=display_str[i],
fontFace=fontFace,
fontScale=fontScale,
thickness=fontThickness)
if max_text_width < text_width:
max_text_width = text_width
if max_text_height < text_height:
max_text_height = text_height
""" DRAW BLACK BOX """
cv2.rectangle(
img, (x_left - 2, int(y_top)),
(int(x_left + max_text_width + 2),
int(y_top + len(display_str) * max_text_height * 1.2 + baseLine)),
color=(0, 0, 0),
thickness=-1)
""" DRAW FPS, TEXT """
for i in range(len(display_str)):
cv2.putText(img,
display_str[i],
org=(x_left, y_top + int(max_text_height * 1.2 +
(max_text_height * 1.2 * i))),
fontFace=fontFace,
fontScale=fontScale,
thickness=fontThickness,
color=(77, 255, 9))
class MakeMovie(object):
def __init__(self):
self.deg_to_rad = math.pi / 180.0
def run(self, args, parser):
'''
Load the images from a tub and create a movie from them.
Movie
'''
if args.tub is None:
print("ERR>> --tub argument missing.")
parser.print_help()
return
conf = os.path.expanduser(args.config)
if not os.path.exists(conf):
print("No config file at location: %s. Add --config to specify\
location or run from dir containing config.py." % conf)
return
self.cfg = dk.load_config(conf)
if args.type is None and args.model is not None:
args.type = self.cfg.DEFAULT_MODEL_TYPE
print(
"Model type not provided. Using default model type from config file"
)
if args.salient:
if args.model is None:
print(
"ERR>> salient visualization requires a model. Pass with the --model arg."
)
parser.print_help()
if args.type not in ['linear', 'categorical']:
print(
"Model type {} is not supported. Only linear or categorical is supported for salient visualization"
.format(args.type))
parser.print_help()
return
self.tub = Tub(args.tub)
start = args.start
self.end_index = args.end if args.end != -1 else len(self.tub)
num_frames = self.end_index - start
# Move to the correct offset
self.current = 0
self.iterator = self.tub.__iter__()
while self.current < start:
self.iterator.next()
self.current += 1
self.scale = args.scale
self.keras_part = None
self.do_salient = False
self.user = args.draw_user_input
if args.model is not None:
self.keras_part = get_model_by_type(args.type, cfg=self.cfg)
self.keras_part.load(args.model)
if args.salient:
self.do_salient = self.init_salient(self.keras_part.model)
print('making movie', args.out, 'from', num_frames, 'images')
clip = mpy.VideoClip(self.make_frame,
duration=((num_frames - 1) /
self.cfg.DRIVE_LOOP_HZ))
clip.write_videofile(args.out, fps=self.cfg.DRIVE_LOOP_HZ)
def draw_user_input(self, record, img):
'''
Draw the user input as a green line on the image
'''
import cv2
user_angle = float(record["user/angle"])
user_throttle = float(record["user/throttle"])
height, width, _ = img.shape
length = height
a1 = user_angle * 45.0
l1 = user_throttle * length
mid = width // 2 - 1
p1 = tuple((mid - 2, height - 1))
p11 = tuple(
(int(p1[0] + l1 * math.cos((a1 + 270.0) * self.deg_to_rad)),
int(p1[1] + l1 * math.sin((a1 + 270.0) * self.deg_to_rad))))
# user is green, pilot is blue
cv2.line(img, p1, p11, (0, 255, 0), 2)
def draw_model_prediction(self, img):
"""
query the model for it's prediction, draw the predictions
as a blue line on the image
"""
if self.keras_part is None:
return
import cv2
expected = tuple(self.keras_part.get_input_shape()[1:])
actual = img.shape
# if model expects grey-scale but got rgb, covert
if expected[2] == 1 and actual[2] == 3:
# normalize image before grey conversion
grey_img = rgb2gray(img)
actual = grey_img.shape
img = grey_img.reshape(grey_img.shape + (1, ))
if expected != actual:
print("expected input dim", expected, "didn't match actual dim",
actual)
return
pilot_angle, pilot_throttle = self.keras_part.run(img)
height, width, _ = img.shape
length = height
a2 = pilot_angle * 45.0
l2 = pilot_throttle * length
mid = width // 2 - 1
p2 = tuple((mid + 2, height - 1))
p22 = tuple(
(int(p2[0] + l2 * math.cos((a2 + 270.0) * self.deg_to_rad)),
int(p2[1] + l2 * math.sin((a2 + 270.0) * self.deg_to_rad))))
# user is green, pilot is blue
cv2.line(img, p2, p22, (0, 0, 255), 2)
def draw_steering_distribution(self, img):
'''
query the model for it's prediction, draw the distribution of steering choices
'''
from donkeycar.parts.keras import KerasCategorical
if self.keras_part is None or type(
self.keras_part) is not KerasCategorical:
return
import cv2
pred_img = normalize_image(img)
pred_img = pred_img.reshape((1, ) + pred_img.shape)
angle_binned, _ = self.keras_part.model.predict(pred_img)
x = 4
dx = 4
y = 120 - 4
iArgMax = np.argmax(angle_binned)
for i in range(15):
p1 = (x, y)
p2 = (x, y - int(angle_binned[0][i] * 100.0))
if i == iArgMax:
cv2.line(img, p1, p2, (255, 0, 0), 2)
else:
cv2.line(img, p1, p2, (200, 200, 200), 2)
x += dx
def init_salient(self, model):
# Utility to search for layer index by name.
# Alternatively we can specify this as -1 since it corresponds to the last layer.
first_output_name = None
for i, layer in enumerate(model.layers):
if first_output_name is None and "dropout" not in layer.name.lower(
) and "out" in layer.name.lower():
first_output_name = layer.name
layer_idx = i
if first_output_name is None:
print(
"Failed to find the model layer named with 'out'. Skipping salient."
)
return False
print("####################")
print("Visualizing activations on layer:", first_output_name)
print("####################")
# ensure we have linear activation
model.layers[layer_idx].activation = activations.linear
# build salient model and optimizer
sal_model = utils.apply_modifications(model)
modifier_fn = get('guided')
sal_model_mod = modifier_fn(sal_model)
losses = [(ActivationMaximization(sal_model_mod.layers[layer_idx],
None), -1)]
self.opt = Optimizer(sal_model_mod.input, losses, norm_grads=False)
return True
def compute_visualisation_mask(self, img):
grad_modifier = 'absolute'
grads = self.opt.minimize(seed_input=img,
max_iter=1,
grad_modifier=grad_modifier,
verbose=False)[1]
channel_idx = 1 if K.image_data_format() == 'channels_first' else -1
grads = np.max(grads, axis=channel_idx)
res = utils.normalize(grads)[0]
return res
def draw_salient(self, img):
import cv2
alpha = 0.004
beta = 1.0 - alpha
expected = self.keras_part.model.inputs[0].shape[1:]
actual = img.shape
# check input depth and convert to grey to match expected model input
if expected[2] == 1 and actual[2] == 3:
grey_img = rgb2gray(img)
img = grey_img.reshape(grey_img.shape + (1, ))
norm_img = normalize_image(img)
salient_mask = self.compute_visualisation_mask(norm_img)
z = np.zeros_like(salient_mask)
salient_mask_stacked = np.dstack((z, z))
salient_mask_stacked = np.dstack((salient_mask_stacked, salient_mask))
blend = cv2.addWeighted(img.astype('float32'), alpha,
salient_mask_stacked, beta, 0.0)
return blend
def make_frame(self, t):
'''
Callback to return an image from from our tub records.
This is called from the VideoClip as it references a time.
We don't use t to reference the frame, but instead increment
a frame counter. This assumes sequential access.
'''
if self.current >= self.end_index:
return None
rec = self.iterator.next()
img_path = os.path.join(self.tub.images_base_path,
rec['cam/image_array'])
image = img_to_arr(Image.open(img_path))
if self.do_salient:
image = self.draw_salient(image)
image = image * 255
image = image.astype('uint8')
if self.user: self.draw_user_input(rec, image)
if self.keras_part is not None:
self.draw_model_prediction(image)
self.draw_steering_distribution(image)
if self.scale != 1:
import cv2
h, w, d = image.shape
dsize = (w * self.scale, h * self.scale)
image = cv2.resize(image,
dsize=dsize,
interpolation=cv2.INTER_CUBIC)
self.current += 1
# returns a 8-bit RGB array
return image