class BedMaker():
def __init__(self, args):
"""For deploying the bed-making policy, not for data collection.
We use all three variants (analytic, human, networks) here due to
similarities in code structure.
"""
self.args = args
DEBUG = True
# Set up the robot.
self.robot = robot = hsrb_interface.Robot()
if DEBUG:
print("finished: hsrb_interface.Robot()...")
self.rgbd_map = RGBD2Map()
self.omni_base = self.robot.get('omni_base')
if DEBUG:
print("finished: robot.get(omni_base)...")
self.whole_body = self.robot.get('whole_body')
if DEBUG:
print("finished: robot.get(whole_body)...")
self.cam = RGBD()
self.com = COM()
self.wl = Python_Labeler(cam=self.cam)
# Set up initial state, table, etc. Don't forget view mode!
self.view_mode = BED_CFG.VIEW_MODE
self.com.go_to_initial_state(self.whole_body)
if DEBUG:
print("finished: go_to_initial_state() ...")
self.tt = TableTop()
if DEBUG:
print("finished: TableTop()...")
# For now, a workaround. Ugly but it should do the job ...
#self.tt.find_table(robot)
self.tt.make_fake_ar()
self.tt.find_table_workaround(robot)
#self.ins = InitialSampler(self.cam)
self.side = 'BOTTOM'
self.grasp_count = 0
self.b_grasp_count = 0
self.t_grasp_count = 0
# AH, build the YOLO network beforehand.
g_cfg = BED_CFG.GRASP_CONFIG
s_cfg = BED_CFG.SUCC_CONFIG
self.yc = YOLO_CONV(options=s_cfg)
self.yc.load_network()
# Policy for grasp detection, using Deep Imitation Learning.
# Or, actually, sometimes we will use humans or an analytic version.
if DEBUG:
self._test_variables()
print("\nnow forming the GDetector with type {}".format(args.g_type))
if args.g_type == 'network':
self.g_detector = GDetector(g_cfg, BED_CFG, yc=self.yc)
elif args.g_type == 'analytic':
self.g_detector = Analytic_Grasp() # TODO not implemented!
elif args.g_type == 'human':
print("Using a human, don't need to have a `g_detector`. :-)")
if DEBUG:
self._test_variables()
print("\nnow making success net")
self.sn = Success_Net(self.whole_body,
self.tt,
self.cam,
self.omni_base,
fg_cfg=s_cfg,
bed_cfg=BED_CFG,
yc=self.yc)
# Bells and whistles.
self.br = TransformBroadcaster()
self.tl = TransformListener()
self.gp = GraspPlanner()
self.gripper = Bed_Gripper(self.gp, self.cam, self.com.Options,
robot.get('gripper'))
self.dp = DrawPrediction()
# When we start, do rospy.spin() to check the frames (phase 1). Then re-run.
# The current hack we have to get around crummy AR marker detection. :-(
if DEBUG:
self._test_variables()
print("Finished with init method")
time.sleep(4)
if args.phase == 1:
print("Now doing rospy.spin() because phase = 1.")
rospy.spin()
# For evaluating coverage.
self.img_start = None
self.img_final = None
self.img_start2 = None
self.img_final2 = None
# For grasp offsets.
self.apply_offset = False
def bed_make(self):
"""Runs the pipeline for deployment, testing out bed-making.
"""
# Get the starting image (from USB webcam). Try a second as well.
cap = cv2.VideoCapture(0)
frame = None
while frame is None:
ret, frame = cap.read()
cv2.waitKey(50)
self.image_start = frame
cv2.imwrite('image_start.png', self.image_start)
_, frame = cap.read()
self.image_start2 = frame
cv2.imwrite('image_start2.png', self.image_start2)
cap.release()
print(
"NOTE! Recorded `image_start` for coverage evaluation. Was it set up?"
)
def get_pose(data_all):
# See `find_pick_region_labeler` in `p_pi/bed_making/gripper.py`.
# It's because from the web labeler, we get a bunch of objects.
# So we have to compute the pose (x,y) from it.
res = data_all['objects'][0]
x_min = float(res['box'][0])
y_min = float(res['box'][1])
x_max = float(res['box'][2])
y_max = float(res['box'][3])
x = (x_max - x_min) / 2.0 + x_min
y = (y_max - y_min) / 2.0 + y_min
return (x, y)
args = self.args
use_d = BED_CFG.GRASP_CONFIG.USE_DEPTH
self.get_new_grasp = True
self.new_grasp = True
self.rollout_stats = [] # What we actually save for analysis later
# Add to self.rollout_stats at the end for more timing info
self.g_time_stats = [] # for _execution_ of a grasp
self.move_time_stats = [] # for moving to the other side
while True:
c_img = self.cam.read_color_data()
d_img = self.cam.read_depth_data()
if (not c_img.all() == None and not d_img.all() == None):
if self.new_grasp:
self.position_head()
else:
self.new_grasp = True
time.sleep(3)
c_img = self.cam.read_color_data()
d_img = self.cam.read_depth_data()
d_img_raw = np.copy(d_img) # Needed for determining grasp pose
# --------------------------------------------------------------
# Process depth images! Helps network, human, and (presumably) analytic.
# Obviously human can see the c_img as well ... hard to compare fairly.
# --------------------------------------------------------------
if use_d:
if np.isnan(np.sum(d_img)):
cv2.patchNaNs(d_img, 0.0)
d_img = depth_to_net_dim(d_img, robot='HSR')
policy_input = np.copy(d_img)
else:
policy_input = np.copy(c_img)
# --------------------------------------------------------------
# Run grasp detector to get data=(x,y) point for target, record stats.
# Note that the web labeler returns a dictionary like this:
# {'objects': [{'box': (155, 187, 165, 194), 'class': 0}], 'num_labels': 1}
# but we really want just the 2D grasping point. So use `get_pose()`.
# Also, for the analytic one, we'll pick the highest point ourselves.
# --------------------------------------------------------------
sgraspt = time.time()
if args.g_type == 'network':
data = self.g_detector.predict(policy_input)
elif args.g_type == 'analytic':
data_all = self.wl.label_image(policy_input)
data = get_pose(data_all)
elif args.g_type == 'human':
data_all = self.wl.label_image(policy_input)
data = get_pose(data_all)
egraspt = time.time()
g_predict_t = egraspt - sgraspt
print("Grasp predict time: {:.2f}".format(g_predict_t))
self.record_stats(c_img, d_img_raw, data, self.side,
g_predict_t, 'grasp')
# For safety, we can check image and abort as needed before execution.
if use_d:
img = self.dp.draw_prediction(d_img, data)
else:
img = self.dp.draw_prediction(c_img, data)
caption = 'G Predicted: {} (ESC to abort, other key to proceed)'.format(
data)
call_wait_key(cv2.imshow(caption, img))
# --------------------------------------------------------------
# Broadcast grasp pose, execute the grasp, check for success.
# We'll use the `find_pick_region_net` since the `data` is the
# (x,y) pose, and not `find_pick_region_labeler`.
# --------------------------------------------------------------
self.gripper.find_pick_region_net(
pose=data,
c_img=c_img,
d_img=d_img_raw,
count=self.grasp_count,
side=self.side,
apply_offset=self.apply_offset)
pick_found, bed_pick = self.check_card_found()
if self.side == "BOTTOM":
self.whole_body.move_to_go()
self.tt.move_to_pose(self.omni_base, 'lower_start')
tic = time.time()
self.gripper.execute_grasp(bed_pick, self.whole_body,
'head_down')
toc = time.time()
else:
self.whole_body.move_to_go()
self.tt.move_to_pose(self.omni_base, 'top_mid')
tic = time.time()
self.gripper.execute_grasp(bed_pick, self.whole_body,
'head_up')
toc = time.time()
self.g_time_stats.append(toc - tic)
self.check_success_state(policy_input)
def check_success_state(self, old_grasp_image):
"""
Checks whether a single grasp in a bed-making trajectory succeeded.
Depends on which side of the bed the HSR is at. Invokes the learned
success network policy and transitions the HSR if successful.
When we record the data, c_img and d_img should be what success net saw.
UPDATE: now we can pass in the previous `d_img` from the grasping to
compare the difference. Well, technically the `policy_input` so it can
handle either case.
"""
use_d = BED_CFG.SUCC_CONFIG.USE_DEPTH
if self.side == "BOTTOM":
result = self.sn.check_bottom_success(use_d, old_grasp_image)
self.b_grasp_count += 1
else:
result = self.sn.check_top_success(use_d, old_grasp_image)
self.t_grasp_count += 1
self.grasp_count += 1
assert self.grasp_count == self.b_grasp_count + self.t_grasp_count
success = result['success']
data = result['data']
c_img = result['c_img']
d_img = result['d_img']
d_img_raw = result['d_img_raw']
s_predict_t = result['s_predict_t']
img_diff = result['diff_l2']
img_ssim = result['diff_ssim']
self.record_stats(c_img, d_img_raw, data, self.side, s_predict_t,
'success')
# We really need a better metric, such as 'structural similarity'.
# Edit: well, it's probably marginally better, I think.
# I use an L2 threshold of 98k, and an SSIM threshold of 0.88.
if BED_CFG.GRASP_CONFIG.USE_DEPTH != BED_CFG.SUCC_CONFIG.USE_DEPTH:
print("grasp vs success for using depth differ")
print("for now we'll ignore the offset issue.")
else:
print("L2 and SSIM btwn grasp & next image: {:.1f} and {:.3f}".
format(img_diff, img_ssim))
if img_ssim >= 0.875 or img_diff < 85000:
print("APPLYING OFFSET! (self.apply_offset = True)")
self.apply_offset = True
else:
print("no offset applied (self.apply_offset = False)")
self.apply_offset = False
# Have user confirm that this makes sense.
caption = "Success net saw this and thought: {}. Press any key".format(
success)
if use_d:
call_wait_key(cv2.imshow(caption, d_img))
else:
call_wait_key(cv2.imshow(caption, c_img))
# Limit amount of grasp attempts per side, pretend 'success' anyway.
lim = BED_CFG.GRASP_ATTEMPTS_PER_SIDE
if (self.side == 'BOTTOM' and self.b_grasp_count >= lim) or \
(self.side == 'TOP' and self.t_grasp_count >= lim):
print("We've hit {} for this side so set success=True".format(lim))
success = True
# Handle transitioning to different side
if success:
if self.side == "BOTTOM":
self.transition_to_top()
self.side = 'TOP'
else:
self.transition_to_start()
print(
"We're moving to another side so revert self.apply_offset = False."
)
self.apply_offset = False
else:
self.new_grasp = False
def transition_to_top(self):
"""Transition to top (not bottom)."""
transition_time = self.move_to_top_side()
self.move_time_stats.append(transition_time)
def transition_to_start(self):
"""Transition to start=bottom, SAVE ROLLOUT STATS, exit program.
The `rollout_stats` is a list with a bunch of stats recorded via the
class method `record_stats`. We save with a top-down webcam and save
before moving back, since the HSR could disconnect.
"""
# Record the final image for evaluation later (from USB webcam).
cap = cv2.VideoCapture(0)
frame = None
while frame is None:
ret, frame = cap.read()
self.image_final = frame
cv2.imwrite('image_final.png', self.image_final)
_, frame = cap.read()
self.image_final2 = frame
cv2.imwrite('image_final2.png', self.image_final2)
cap.release()
print("NOTE! Recorded `image_final` for coverage evaluation.")
# Append some last-minute stuff to `self.rollout_stats` for saving.
final_stuff = {
'image_start': self.image_start,
'image_final': self.image_final,
'image_start2': self.image_start2,
'image_final2': self.image_final2,
'grasp_times': self.g_time_stats,
'move_times': self.move_time_stats,
'args': self.args, # ADDING THIS! Now we can 'retrace' our steps.
}
self.rollout_stats.append(final_stuff)
# SAVE, move to start, then exit.
self.com.save_stat(self.rollout_stats, target_path=self.args.save_path)
self.move_to_start()
sys.exit()
def record_stats(self, c_img, d_img, data, side, time, typ):
"""Adds a dictionary to the `rollout_stats` list.
We can tell it's a 'net' thing due to 'net_pose' and 'net_succ' keys.
EDIT: argh wish I hadn't done that since this script also handles the
human and analytic cases. Oh well, too late for that now.
"""
assert side in ['BOTTOM', 'TOP']
grasp_point = {}
grasp_point['c_img'] = c_img
grasp_point['d_img'] = d_img
if typ == "grasp":
grasp_point['net_pose'] = data
grasp_point['g_net_time'] = time
elif typ == "success":
grasp_point['net_succ'] = data
grasp_point['s_net_time'] = time
else:
raise ValueError(typ)
grasp_point['side'] = side
grasp_point['type'] = typ
self.rollout_stats.append(grasp_point)
def position_head(self):
"""Position head for a grasp.
Use lower_start_tmp so HSR looks 'sideways'; thus, hand is not in the way.
"""
self.whole_body.move_to_go()
if self.side == "BOTTOM":
self.tt.move_to_pose(self.omni_base, 'lower_start_tmp')
self.whole_body.move_to_joint_positions(
{'arm_flex_joint': -np.pi / 16.0})
self.whole_body.move_to_joint_positions(
{'head_pan_joint': np.pi / 2.0})
self.whole_body.move_to_joint_positions({'arm_lift_joint': 0.120})
self.whole_body.move_to_joint_positions(
{'head_tilt_joint': -np.pi / 4.0})
def move_to_top_side(self):
"""Assumes we're at the bottom and want to go to the top."""
self.whole_body.move_to_go()
tic = time.time()
self.tt.move_to_pose(self.omni_base, 'right_down_1')
self.tt.move_to_pose(self.omni_base, 'right_mid_1')
self.tt.move_to_pose(self.omni_base, 'right_up_1')
self.tt.move_to_pose(self.omni_base, 'top_mid_tmp')
toc = time.time()
return toc - tic
def move_to_start(self):
"""Assumes we're at the top and we go back to the start.
Go to lower_start_tmp to be at the same view as we started with, so that
we take a c_img and compare coverage.
"""
self.whole_body.move_to_go()
tic = time.time()
self.tt.move_to_pose(self.omni_base, 'right_up_2')
self.tt.move_to_pose(self.omni_base, 'right_mid_2')
self.tt.move_to_pose(self.omni_base, 'right_down_2')
self.tt.move_to_pose(self.omni_base, 'lower_start_tmp')
toc = time.time()
return toc - tic
def check_card_found(self):
"""Looks up the pose for where the HSR's hand should go to."""
transforms = self.tl.getFrameStrings()
cards = []
try:
for transform in transforms:
current_grasp = 'bed_' + str(self.grasp_count)
if current_grasp in transform:
print('found {}'.format(current_grasp))
f_p = self.tl.lookupTransform('map', transform,
rospy.Time(0))
cards.append(transform)
except:
rospy.logerr('bed pick not found yet')
return True, cards
def _test_grasp(self):
"""Simple tests for grasping. Don't forget to process depth images.
Do this independently of any rollout ...
"""
print("\nNow in `test_grasp` to check grasping net...")
self.position_head()
time.sleep(3)
c_img = self.cam.read_color_data()
d_img = self.cam.read_depth_data()
if np.isnan(np.sum(d_img)):
cv2.patchNaNs(d_img, 0.0)
d_img = depth_to_net_dim(d_img, robot='HSR')
pred = self.g_detector.predict(np.copy(d_img))
img = self.dp.draw_prediction(d_img, pred)
print("prediction: {}".format(pred))
caption = 'G Predicted: {} (ESC to abort, other key to proceed)'.format(
pred)
cv2.imshow(caption, img)
key = cv2.waitKey(0)
if key in ESC_KEYS:
print("Pressed ESC key. Terminating program...")
sys.exit()
def _test_success(self):
"""Simple tests for success net. Don't forget to process depth images.
Should be done after a grasp test since I don't re-position... Note: we
have access to `self.sn` but that isn't the actual net which has a
`predict`, but it's a wrapper (explained above), but we can access the
true network via `self.sn.sdect` and from there call `predict`.
"""
print("\nNow in `test_success` to check success net...")
time.sleep(3)
c_img = self.cam.read_color_data()
d_img = self.cam.read_depth_data()
if np.isnan(np.sum(d_img)):
cv2.patchNaNs(d_img, 0.0)
d_img = depth_to_net_dim(d_img, robot='HSR')
result = self.sn.sdect.predict(np.copy(d_img))
result = np.squeeze(result)
print("s-net pred: {} (if [0]<[1] failure, else success...)".format(
result))
caption = 'S Predicted: {} (ESC to abort, other key to proceed)'.format(
result)
cv2.imshow(caption, d_img)
key = cv2.waitKey(0)
if key in ESC_KEYS:
print("Pressed ESC key. Terminating program...")
sys.exit()
def _test_variables(self):
"""Test to see if TF variables were loaded correctly.
"""
vars = tf.trainable_variables()
print("\ntf.trainable_variables:")
for vv in vars:
print(" {}".format(vv))
print("done\n")
class BedMaker():
def __init__(self):
'''
Initialization class for a Policy
Parameters
----------
yumi : An instianted yumi robot
com : The common class for the robot
cam : An open bincam class
debug : bool
A bool to indicate whether or not to display a training set point for
debuging.
'''
self.robot = hsrb_interface.Robot()
self.rgbd_map = RGBD2Map()
self.omni_base = self.robot.get('omni_base')
self.whole_body = self.robot.get('whole_body')
self.side = 'BOTTOM'
self.cam = RGBD()
self.com = COM()
if cfg.USE_WEB_INTERFACE:
self.wl = Web_Labeler()
else:
self.wl = Python_Labeler(self.cam)
self.com.go_to_initial_state(self.whole_body)
self.tt = TableTop()
self.tt.find_table(self.robot)
self.ins = InitialSampler(self.cam)
self.grasp_count = 0
self.br = tf.TransformBroadcaster()
self.tl = TransformListener()
self.gp = GraspPlanner()
self.gripper = Bed_Gripper(self.gp, self.cam, self.com.Options,
self.robot.get('gripper'))
self.g_detector = Analytic_Grasp()
self.sn = Success_Net(self.whole_body, self.tt, self.cam,
self.omni_base)
c_img = self.cam.read_color_data()
#self.test_current_point()
time.sleep(4)
#thread.start_new_thread(self.ql.run,())
print "after thread"
def find_mean_depth(self, d_img):
'''
Evaluates the current policy and then executes the motion
specified in the the common class
'''
indx = np.nonzero(d_img)
mean = np.mean(d_img[indx])
return
def bed_make(self):
self.rollout_stats = []
self.get_new_grasp = True
if cfg.INS_SAMPLE:
u_c, d_c = self.ins.sample_initial_state()
self.rollout_stats.append([u_c, d_c])
self.new_grasp = True
while True:
c_img = self.cam.read_color_data()
d_img = self.cam.read_depth_data()
if (not c_img == None and not d_img == None):
if self.new_grasp:
self.position_head()
else:
self.new_grasp = True
time.sleep(3)
c_img = self.cam.read_color_data()
d_img = self.cam.read_depth_data()
#CHANGE HERE
grasp_factor = 3
img_small = cv2.resize(np.copy(c_img), (640 / 3, 480 / 3))
sgraspt = time.time()
data = self.g_detector.get_grasp(img_small, grasp_factor)
egraspt = time.time()
print("Grasp predict time: " + str(egraspt - sgraspt))
data = 3 * data
IPython.embed()
self.record_stats(c_img, d_img, data, self.side, 'grasp')
self.gripper.find_pick_region_net(data, c_img, d_img,
self.grasp_count)
pick_found, bed_pick = self.check_card_found()
if self.side == "BOTTOM":
self.gripper.execute_grasp(bed_pick, self.whole_body,
'head_down')
else:
self.gripper.execute_grasp(bed_pick, self.whole_body,
'head_up')
self.check_success_state(c_img, d_img)
def check_success_state(self, c_img, d_img):
if self.side == "BOTTOM":
success, data, c_img = self.sn.check_bottom_success(self.wl)
else:
success, data, c_img = self.sn.check_top_success(self.wl)
self.record_stats(c_img, d_img, data, self.side, 'success')
print "WAS SUCCESFUL: "
print success
if (success):
if self.side == "BOTTOM":
self.transition_to_top()
else:
self.transition_to_start()
self.update_side()
else:
self.new_grasp = False
self.grasp_count += 1
if self.grasp_count > cfg.GRASP_OUT:
self.transition_to_start()
def update_side(self):
if self.side == "BOTTOM":
self.side = "TOP"
def transition_to_top(self):
if cfg.DEBUG_MODE:
self.com.save_stat(self.rollout_stats)
self.tt.move_to_pose(self.omni_base, 'lower_mid')
sys.exit()
else:
self.move_to_top_side()
def transition_to_start(self):
self.com.save_stat(self.rollout_stats)
self.move_to_start()
sys.exit()
def record_stats(self, c_img, d_img, data, side, typ):
grasp_point = {}
grasp_point['c_img'] = c_img
grasp_point['d_img'] = d_img
if typ == "grasp":
grasp_point['net_pose'] = data
else:
grasp_point['net_trans'] = data
grasp_point['side'] = side
grasp_point['type'] = typ
self.rollout_stats.append(grasp_point)
def position_head(self):
if self.side == "TOP":
self.whole_body.move_to_joint_positions({'head_tilt_joint': -0.8})
elif self.side == "BOTTOM":
self.tt.move_to_pose(self.omni_base, 'lower_start')
self.whole_body.move_to_joint_positions({'head_tilt_joint': -0.8})
def move_to_top_side(self):
self.tt.move_to_pose(self.omni_base, 'right_down')
self.tt.move_to_pose(self.omni_base, 'right_up')
self.tt.move_to_pose(self.omni_base, 'top_mid')
def move_to_start(self):
if self.side == "BOTTOM":
self.tt.move_to_pose(self.omni_base, 'lower_mid')
else:
self.tt.move_to_pose(self.omni_base, 'right_up')
self.tt.move_to_pose(self.omni_base, 'right_down')
self.tt.move_to_pose(self.omni_base, 'lower_mid')
def check_bottom_success(self):
self.tt.move_to_pose(self.omni_base, 'lower_mid')
self.whole_body.move_to_joint_positions({'head_tilt_joint': -0.8})
def check_card_found(self):
time.sleep(1)
# try:
transforms = self.tl.getFrameStrings()
cards = []
try:
for transform in transforms:
print transform
current_grasp = 'bed_' + str(self.grasp_count)
if current_grasp in transform:
print 'got here'
f_p = self.tl.lookupTransform('map', transform,
rospy.Time(0))
cards.append(transform)
except:
rospy.logerr('bed pick not found yet')
return True, cards