@ -36,24 +36,25 @@ from copy import deepcopy
import yaml
import time
class CollectHeadCalibrationDataNode :
def __init__ ( self , test_rig = False ) :
def __init__ ( self , test_rig = False ) :
self . rate = 10.0
self . joint_state = None
self . acceleration = None
self . acceleration = None
self . data_time = None
self . marker_time = None
self . test_rig = test_rig
self . data_lock = threading . Lock ( )
if test_rig :
self . number_of_testrig_samples = 40
self . number_of_testrig_samples = 40
def calibration_data_callback ( self , accel , marker_array , joint_state = None ) :
def calibration_data_callback ( self , marker_array , accel = None , joint_state = None ) :
# Prepare and assign data for calibration to member
# variables. The configuration of the robot's joints, the
# D435i acceleration, and the 3D fiducial estimates made via
@ -63,7 +64,8 @@ class CollectHeadCalibrationDataNode:
if not self . test_rig :
self . data_time = joint_state . header . stamp
self . joint_state = joint_state
self . acceleration = [ accel . linear_acceleration . x , accel . linear_acceleration . y , accel . linear_acceleration . z ]
self . acceleration = [ accel . linear_acceleration . x , accel . linear_acceleration . y ,
accel . linear_acceleration . z ]
self . wrist_inside_marker_pose = None
self . wrist_top_marker_pose = None
@ -78,7 +80,7 @@ class CollectHeadCalibrationDataNode:
self . marker_time = marker . header . stamp
elif marker . header . stamp < self . marker_time :
self . marker_time = marker . header . stamp
if marker . id == self . wrist_inside_marker_id :
self . wrist_inside_marker_pose = marker . pose
@ -104,16 +106,17 @@ class CollectHeadCalibrationDataNode:
self . trajectory_goal . trajectory . header . stamp = rospy . Time . now ( )
self . trajectory_client . send_goal ( self . trajectory_goal )
self . trajectory_client . wait_for_result ( )
def get_samples ( self , pan_angle_center , tilt_angle_center , wrist_extension_center , number_of_samples , first_move = False ) :
def get_samples ( self , pan_angle_center , tilt_angle_center , wrist_extension_center , number_of_samples ,
first_move = False ) :
# Collect N observations (samples) centered around the
# provided head and wrist extension pose. If first_move is
# true, it indicates that this is the first movement to a new
# region for calibration, which can induce more vibrations and
# thus benefit from more time to settle prior to collecting a
# sample.
head_motion_settle_time = 1.0 #5.0
head_motion_settle_time = 1.0 # 5.0
first_pan_tilt_extra_settle_time = 1.0
wait_before_each_sample_s = 0.2
@ -124,10 +127,10 @@ class CollectHeadCalibrationDataNode:
# Ensure that the head is clearly in one of the two head tilt
# backlash regimes and not in the indeterminate transition
# region.
tilt_backlash_safety_margin = 0.08
tilt_backlash_looking_down_max = tilt_backlash_transition - tilt_backlash_safety_margin # looking down
tilt_backlash_looking_up_min = tilt_backlash_transition + tilt_backlash_safety_margin # looking up
tilt_backlash_safety_margin = 0.08
tilt_backlash_looking_down_max = tilt_backlash_transition - tilt_backlash_safety_margin # looking down
tilt_backlash_looking_up_min = tilt_backlash_transition + tilt_backlash_safety_margin # looking up
tilt_angle = tilt_angle_center
if ( tilt_angle_center > tilt_backlash_looking_down_max ) and ( tilt_angle_center < tilt_backlash_looking_up_min ) :
# Commanded tilt_angle_center is in an uncertain backlash range
@ -138,29 +141,29 @@ class CollectHeadCalibrationDataNode:
tilt_angle = tilt_backlash_looking_up_min
else :
tilt_angle = tilt_backlash_looking_down_max
if tilt_angle > tilt_backlash_transition :
if tilt_angle > tilt_backlash_transition :
joint_head_tilt_looking_up = True
else :
joint_head_tilt_looking_up = False
# represent all head pan and wrist extension backlash states
backlash_combinations = ( ( False , False ) , ( False , True ) , ( True , True ) , ( True , False ) )
pan_backlash_change_rad = 0.07 # ~8 degrees
wrist_backlash_change_m = 0.01 # 1 cm
pan_backlash_change_rad = 0.07 # ~8 degrees
wrist_backlash_change_m = 0.01 # 1 cm
samples = [ ]
# collect samples for all head pan and wrist extension
# backlash states
for joint_head_pan_looked_left , wrist_extension_retracted in backlash_combinations :
for joint_head_pan_looked_left , wrist_extension_retracted in backlash_combinations :
if joint_head_pan_looked_left :
pan_angle = pan_angle_center + pan_backlash_change_rad
else :
pan_angle = pan_angle_center - pan_backlash_change_rad
if wrist_extension_retracted :
if wrist_extension_retracted :
wrist_extension = wrist_extension_center - wrist_backlash_change_m
else :
wrist_extension = wrist_extension_center + wrist_backlash_change_m
@ -171,7 +174,6 @@ class CollectHeadCalibrationDataNode:
' wrist_extension ' : wrist_extension }
self . move_to_pose ( head_arm_pose )
# wait for the joints and sensors to settle
rospy . sleep ( head_motion_settle_time )
settled_time = rospy . Time . now ( )
@ -186,19 +188,19 @@ class CollectHeadCalibrationDataNode:
rospy . sleep ( wait_before_each_sample_s )
observation = { ' joints ' : { ' joint_head_pan ' : None ,
' joint_head_tilt ' : None ,
' wrist_extension ' : None ,
' joint_lift ' : None } ,
' wrist_extension ' : None ,
' joint_lift ' : None } ,
' backlash_state ' : {
' joint_head_pan_looked_left ' : None ,
' joint_head_tilt_looking_up ' : None ,
' wrist_extension_retracted ' : None
} ,
' camera_measurements ' : { ' d435i_acceleration ' : None ,
' wrist_inside_marker_pose ' : None ,
' wrist_top_marker_pose ' : None ,
' base_left_marker_pose ' : None ,
' base_right_marker_pose ' : None ,
' shoulder_marker_pose ' : None }
} ,
' camera_measurements ' : { ' d435i_acceleration ' : None ,
' wrist_inside_marker_pose ' : None ,
' wrist_top_marker_pose ' : None ,
' base_left_marker_pose ' : None ,
' base_right_marker_pose ' : None ,
' shoulder_marker_pose ' : None }
}
# wait for a sample taken after the robot has
@ -224,16 +226,17 @@ class CollectHeadCalibrationDataNode:
# settled
data_ready = True
if not data_ready :
#rospy.sleep(0.2) #0.1
# rospy.sleep(0.2) #0.1
rospy . sleep ( 1.0 )
timeout = ( rospy . Time . now ( ) - start_wait ) > timeout_duration
if timeout :
rospy . logerr ( ' collect_head_calibration_data get_samples: timeout while waiting for sample. ' )
raise Exception ( ' Timed out waiting for joint_states/accelerations/markers messages after 10 seconds ' )
raise Exception (
' Timed out waiting for joint_states/accelerations/markers messages after 10 seconds ' )
with self . data_lock :
#set backlash joint state
# set backlash joint state
backlash_state = observation [ ' backlash_state ' ]
backlash_state [ ' joint_head_pan_looked_left ' ] = joint_head_pan_looked_left
backlash_state [ ' joint_head_tilt_looking_up ' ] = joint_head_tilt_looking_up
@ -242,7 +245,7 @@ class CollectHeadCalibrationDataNode:
# record the settled joint values
joints = observation [ ' joints ' ]
for joint_name in joints :
print ( ' Joint name %s ' % joint_name )
print ( ' Joint name %s ' % joint_name )
joint_index = self . joint_state . name . index ( joint_name )
joint_value = self . joint_state . position [ joint_index ]
joints [ joint_name ] = joint_value
@ -253,19 +256,24 @@ class CollectHeadCalibrationDataNode:
# record the settled aruco measurements
if self . wrist_inside_marker_pose is not None :
camera_measurements [ ' wrist_inside_marker_pose ' ] = ros_numpy . numpify ( self . wrist_inside_marker_pose ) . tolist ( )
camera_measurements [ ' wrist_inside_marker_pose ' ] = ros_numpy . numpify (
self . wrist_inside_marker_pose ) . tolist ( )
if self . wrist_top_marker_pose is not None :
camera_measurements [ ' wrist_top_marker_pose ' ] = ros_numpy . numpify ( self . wrist_top_marker_pose ) . tolist ( )
camera_measurements [ ' wrist_top_marker_pose ' ] = ros_numpy . numpify (
self . wrist_top_marker_pose ) . tolist ( )
if self . base_left_marker_pose is not None :
camera_measurements [ ' base_left_marker_pose ' ] = ros_numpy . numpify ( self . base_left_marker_pose ) . tolist ( )
camera_measurements [ ' base_left_marker_pose ' ] = ros_numpy . numpify (
self . base_left_marker_pose ) . tolist ( )
if self . base_right_marker_pose is not None :
camera_measurements [ ' base_right_marker_pose ' ] = ros_numpy . numpify ( self . base_right_marker_pose ) . tolist ( )
camera_measurements [ ' base_right_marker_pose ' ] = ros_numpy . numpify (
self . base_right_marker_pose ) . tolist ( )
if self . shoulder_marker_pose is not None :
camera_measurements [ ' shoulder_marker_pose ' ] = ros_numpy . numpify ( self . shoulder_marker_pose ) . tolist ( )
camera_measurements [ ' shoulder_marker_pose ' ] = ros_numpy . numpify (
self . shoulder_marker_pose ) . tolist ( )
samples . append ( observation )
return samples
@ -275,27 +283,27 @@ class CollectHeadCalibrationDataNode:
# testrig rigid setup. This function allows to
# collect samples in the same data dictionary format
# used for calibration without any robot motion.
samples = [ ]
wait_before_each_sample_s = 0.1
for sample_number in range ( number_of_samples ) :
rospy . sleep ( wait_before_each_sample_s )
observation = { ' joints ' : { ' joint_head_pan ' : None ,
' joint_head_tilt ' : None ,
' wrist_extension ' : None ,
' joint_lift ' : None } ,
' backlash_state ' : {
' joint_head_pan_looked_left ' : None ,
' joint_head_tilt_looking_up ' : None ,
' wrist_extension_retracted ' : None
} ,
' camera_measurements ' : { ' d435i_acceleration ' : None ,
' wrist_inside_marker_pose ' : None ,
' wrist_top_marker_pose ' : None ,
' base_left_marker_pose ' : None ,
' base_right_marker_pose ' : None ,
' shoulder_marker_pose ' : None }
}
' joint_head_tilt ' : None ,
' wrist_extension ' : None ,
' joint_lift ' : None } ,
' backlash_state ' : {
' joint_head_pan_looked_left ' : None ,
' joint_head_tilt_looking_up ' : None ,
' wrist_extension_retracted ' : None
} ,
' camera_measurements ' : { ' d435i_acceleration ' : None ,
' wrist_inside_marker_pose ' : None ,
' wrist_top_marker_pose ' : None ,
' base_left_marker_pose ' : None ,
' base_right_marker_pose ' : None ,
' shoulder_marker_pose ' : None }
}
with self . data_lock :
@ -305,23 +313,27 @@ class CollectHeadCalibrationDataNode:
# record the settled aruco measurements
if self . wrist_inside_marker_pose is not None :
camera_measurements [ ' wrist_inside_marker_pose ' ] = ros_numpy . numpify ( self . wrist_inside_marker_pose ) . tolist ( )
camera_measurements [ ' wrist_inside_marker_pose ' ] = ros_numpy . numpify (
self . wrist_inside_marker_pose ) . tolist ( )
if self . wrist_top_marker_pose is not None :
camera_measurements [ ' wrist_top_marker_pose ' ] = ros_numpy . numpify ( self . wrist_top_marker_pose ) . tolist ( )
camera_measurements [ ' wrist_top_marker_pose ' ] = ros_numpy . numpify (
self . wrist_top_marker_pose ) . tolist ( )
if self . base_left_marker_pose is not None :
camera_measurements [ ' base_left_marker_pose ' ] = ros_numpy . numpify ( self . base_left_marker_pose ) . tolist ( )
camera_measurements [ ' base_left_marker_pose ' ] = ros_numpy . numpify (
self . base_left_marker_pose ) . tolist ( )
if self . base_right_marker_pose is not None :
camera_measurements [ ' base_right_marker_pose ' ] = ros_numpy . numpify ( self . base_right_marker_pose ) . tolist ( )
camera_measurements [ ' base_right_marker_pose ' ] = ros_numpy . numpify (
self . base_right_marker_pose ) . tolist ( )
if self . shoulder_marker_pose is not None :
camera_measurements [ ' shoulder_marker_pose ' ] = ros_numpy . numpify ( self . shoulder_marker_pose ) . tolist ( )
samples . append ( observation )
return samples
def calibrate_pan_and_tilt ( self , collect_check_data = False ) :
# Collects observations of fiducial markers on the robot's
# body while moving the head pan, head tilt, arm lift, and arm
@ -335,9 +347,9 @@ class CollectHeadCalibrationDataNode:
# calibration. When collect_check_data is False, more samples
# are collected with the intention of fully calibrating the
# robot.
calibration_data = [ ]
number_of_samples_per_head_pose = 1 #3
number_of_samples_per_head_pose = 1 # 3
wrist_motion_settle_time = 1.0
########################################
@ -353,17 +365,17 @@ class CollectHeadCalibrationDataNode:
# looking down data
min_tilt_angle_rad = - 1.4
max_tilt_angle_rad = - 0.5
max_tilt_angle_rad = - 0.5
min_pan_angle_rad = - 3.8
max_pan_angle_rad = 1.3
if collect_check_data :
number_of_tilt_steps = 1
number_of_pan_steps = 3
else :
number_of_tilt_steps = 3 #4
number_of_pan_steps = 5 #7
number_of_tilt_steps = 1
number_of_pan_steps = 3
else :
number_of_tilt_steps = 3 # 4
number_of_pan_steps = 5 # 7
pan_angles_rad = np . linspace ( min_pan_angle_rad , max_pan_angle_rad , number_of_pan_steps )
tilt_angles_rad = np . linspace ( min_tilt_angle_rad , max_tilt_angle_rad , number_of_tilt_steps )
@ -377,14 +389,17 @@ class CollectHeadCalibrationDataNode:
self . move_to_pose ( lift_pose )
# wait for the joints and sensors to settle
rospy . loginfo ( ' Wait {0} seconds for the robot to settle after motion of the arm. ' . format ( wrist_motion_settle_time ) )
rospy . loginfo (
' Wait {0} seconds for the robot to settle after motion of the arm. ' . format ( wrist_motion_settle_time ) )
rospy . sleep ( wrist_motion_settle_time )
rospy . loginfo ( ' Starting to collect global head looking down data (expect to collect {0} samples). ' . format ( number_of_tilt_steps * number_of_pan_steps ) )
rospy . loginfo ( ' Starting to collect global head looking down data (expect to collect {0} samples). ' . format (
number_of_tilt_steps * number_of_pan_steps ) )
first_pan_tilt = True
for pan_angle in pan_angles_rad :
for tilt_angle in tilt_angles_rad :
observation = self . get_samples ( pan_angle , tilt_angle , wrist_extension , number_of_samples_per_head_pose , first_move = first_pan_tilt )
observation = self . get_samples ( pan_angle , tilt_angle , wrist_extension , number_of_samples_per_head_pose ,
first_move = first_pan_tilt )
first_pan_tilt = False
calibration_data . extend ( observation )
n = len ( calibration_data )
@ -401,7 +416,7 @@ class CollectHeadCalibrationDataNode:
rospy . loginfo ( ' COLLECT GLOBAL HEAD LOOKING UP DATA ' )
rospy . loginfo ( ' ************************************* ' )
rospy . loginfo ( ' ' )
if not collect_check_data :
tilt_angles_rad = [ - 0.3 , 0.38 ]
pan_angles_rad = [ - 3.8 , - 1.66 , 1.33 ]
@ -415,20 +430,23 @@ class CollectHeadCalibrationDataNode:
self . move_to_pose ( wrist_pose )
# wait for the joints and sensors to settle
rospy . loginfo ( ' Wait {0} seconds for the robot to settle after motion of the arm. ' . format ( wrist_motion_settle_time ) )
rospy . loginfo (
' Wait {0} seconds for the robot to settle after motion of the arm. ' . format ( wrist_motion_settle_time ) )
rospy . sleep ( wrist_motion_settle_time )
rospy . loginfo ( ' Starting to collect global head looking up data (expect to collect {0} samples). ' . format ( len ( pan_angles_rad ) * len ( tilt_angles_rad ) ) )
rospy . loginfo ( ' Starting to collect global head looking up data (expect to collect {0} samples). ' . format (
len ( pan_angles_rad ) * len ( tilt_angles_rad ) ) )
first_pan_tilt = True
for pan_angle in pan_angles_rad :
for tilt_angle in tilt_angles_rad :
observation = self . get_samples ( pan_angle , tilt_angle , wrist_extension , number_of_samples_per_head_pose , first_move = first_pan_tilt )
observation = self . get_samples ( pan_angle , tilt_angle , wrist_extension ,
number_of_samples_per_head_pose , first_move = first_pan_tilt )
first_pan_tilt = False
calibration_data . extend ( observation )
n = len ( calibration_data )
if ( n % 10 ) == 0 :
rospy . loginfo ( ' {0} samples collected so far. ' . format ( n ) )
#######################################
##
## COLLECT HIGH SHOULDER DATA
@ -439,7 +457,7 @@ class CollectHeadCalibrationDataNode:
rospy . loginfo ( ' COLLECT HIGH SHOULDER DATA ' )
rospy . loginfo ( ' ************************************* ' )
rospy . loginfo ( ' ' )
##############################################################
### poses that see the shoulder marker
#
@ -463,7 +481,7 @@ class CollectHeadCalibrationDataNode:
##############################################################
wrist_extension = 0.29
# low shoulder height
pan_angle_rad = - 3.7
tilt_angle_rad_1 = - 1.4
@ -473,16 +491,19 @@ class CollectHeadCalibrationDataNode:
pose = { ' joint_lift ' : lift_m }
rospy . loginfo ( ' Move to first shoulder capture height. ' )
self . move_to_pose ( pose )
rospy . loginfo ( ' Wait {0} seconds for the robot to settle after motion of the arm. ' . format ( wrist_motion_settle_time ) )
rospy . loginfo (
' Wait {0} seconds for the robot to settle after motion of the arm. ' . format ( wrist_motion_settle_time ) )
rospy . sleep ( wrist_motion_settle_time )
first_pan_tilt = True
observation = self . get_samples ( pan_angle_rad , tilt_angle_rad_1 , wrist_extension , number_of_samples_per_head_pose , first_move = first_pan_tilt )
observation = self . get_samples ( pan_angle_rad , tilt_angle_rad_1 , wrist_extension ,
number_of_samples_per_head_pose , first_move = first_pan_tilt )
calibration_data . extend ( observation )
if not collect_check_data :
first_pan_tilt = False
observation = self . get_samples ( pan_angle_rad , tilt_angle_rad_2 , wrist_extension , number_of_samples_per_head_pose , first_move = first_pan_tilt )
observation = self . get_samples ( pan_angle_rad , tilt_angle_rad_2 , wrist_extension ,
number_of_samples_per_head_pose , first_move = first_pan_tilt )
calibration_data . extend ( observation )
# high shoulder height
@ -494,19 +515,21 @@ class CollectHeadCalibrationDataNode:
pose = { ' joint_lift ' : lift_m }
rospy . loginfo ( ' Move to second shoulder capture height. ' )
self . move_to_pose ( pose )
rospy . loginfo ( ' Wait {0} seconds for the robot to settle after motion of the arm. ' . format ( wrist_motion_settle_time ) )
rospy . loginfo (
' Wait {0} seconds for the robot to settle after motion of the arm. ' . format ( wrist_motion_settle_time ) )
rospy . sleep ( wrist_motion_settle_time )
first_pan_tilt = True
observation = self . get_samples ( pan_angle_rad , tilt_angle_rad_1 , wrist_extension , number_of_samples_per_head_pose , first_move = first_pan_tilt )
observation = self . get_samples ( pan_angle_rad , tilt_angle_rad_1 , wrist_extension ,
number_of_samples_per_head_pose , first_move = first_pan_tilt )
calibration_data . extend ( observation )
if not collect_check_data :
first_pan_tilt = False
observation = self . get_samples ( pan_angle_rad , tilt_angle_rad_2 , wrist_extension , number_of_samples_per_head_pose , first_move = first_pan_tilt )
observation = self . get_samples ( pan_angle_rad , tilt_angle_rad_2 , wrist_extension ,
number_of_samples_per_head_pose , first_move = first_pan_tilt )
calibration_data . extend ( observation )
#######################################
##
## COLLECT ARM FOCUSED DATA
@ -542,16 +565,17 @@ class CollectHeadCalibrationDataNode:
wrist_focused_min_tilt = - 1.2
wrist_focused_max_tilt = - 0.5
if collect_check_data :
num_wrist_focused_pan_steps = 1 #3
num_wrist_focused_tilt_steps = 1 #3
num_wrist_focused_pan_steps = 1 # 3
num_wrist_focused_tilt_steps = 1 # 3
else :
num_wrist_focused_pan_steps = 2 #3
num_wrist_focused_tilt_steps = 2 #3
wrist_focused_pan_angles_rad = np . linspace ( wrist_focused_min_pan , wrist_focused_max_pan , num_wrist_focused_pan_steps )
wrist_focused_tilt_angles_rad = np . linspace ( wrist_focused_min_tilt , wrist_focused_max_tilt , num_wrist_focused_tilt_steps )
num_wrist_focused_pan_steps = 2 # 3
num_wrist_focused_tilt_steps = 2 # 3
wrist_focused_pan_angles_rad = np . linspace ( wrist_focused_min_pan , wrist_focused_max_pan ,
num_wrist_focused_pan_steps )
wrist_focused_tilt_angles_rad = np . linspace ( wrist_focused_min_tilt , wrist_focused_max_tilt ,
num_wrist_focused_tilt_steps )
if collect_check_data :
wrist_extensions = [ 0.2 ]
@ -560,8 +584,8 @@ class CollectHeadCalibrationDataNode:
# heights.
#
# 0.46 m = (0.8 m + 0.12 m) / 2.0
wrist_heights = [ 0.46 , 0.8 ] #[0.2, 0.5, 0.8]
wrist_poses = [ { ' wrist_extension ' : e , ' joint_lift ' : h } for h in wrist_heights for e in wrist_extensions ]
wrist_heights = [ 0.46 , 0.8 ] # [0.2, 0.5, 0.8]
wrist_poses = [ { ' wrist_extension ' : e , ' joint_lift ' : h } for h in wrist_heights for e in wrist_extensions ]
num_wrist_poses = len ( wrist_poses )
else :
@ -571,12 +595,13 @@ class CollectHeadCalibrationDataNode:
# heights.
#
# 0.46 m = (0.8 m + 0.12 m) / 2.0
wrist_heights = [ 0.46 , 0.8 ] #[0.2, 0.5, 0.8]
wrist_poses = [ { ' wrist_extension ' : e , ' joint_lift ' : h } for h in wrist_heights for e in wrist_extensions ]
wrist_heights = [ 0.46 , 0.8 ] # [0.2, 0.5, 0.8]
wrist_poses = [ { ' wrist_extension ' : e , ' joint_lift ' : h } for h in wrist_heights for e in wrist_extensions ]
num_wrist_poses = len ( wrist_poses )
rospy . loginfo ( ' Starting to collect arm focused samples (expect to collect {0} samples). ' . format ( num_wrist_poses * num_wrist_focused_pan_steps * num_wrist_focused_tilt_steps ) )
rospy . loginfo ( ' Starting to collect arm focused samples (expect to collect {0} samples). ' . format (
num_wrist_poses * num_wrist_focused_pan_steps * num_wrist_focused_tilt_steps ) )
for wrist_pose in wrist_poses :
@ -584,19 +609,21 @@ class CollectHeadCalibrationDataNode:
self . move_to_pose ( wrist_pose )
# wait for the joints and sensors to settle
rospy . loginfo ( ' Wait {0} seconds for the robot to settle after motion of the arm. ' . format ( wrist_motion_settle_time ) )
rospy . loginfo (
' Wait {0} seconds for the robot to settle after motion of the arm. ' . format ( wrist_motion_settle_time ) )
rospy . sleep ( wrist_motion_settle_time )
first_pan_tilt = True
for pan_angle in wrist_focused_pan_angles_rad :
for tilt_angle in wrist_focused_tilt_angles_rad :
observation = self . get_samples ( pan_angle , tilt_angle , wrist_pose [ ' wrist_extension ' ] , number_of_samples_per_head_pose , first_move = first_pan_tilt )
observation = self . get_samples ( pan_angle , tilt_angle , wrist_pose [ ' wrist_extension ' ] ,
number_of_samples_per_head_pose , first_move = first_pan_tilt )
first_pan_tilt = False
calibration_data . extend ( observation )
n = len ( calibration_data )
if ( n % 10 ) == 0 :
rospy . loginfo ( ' {0} samples collected so far. ' . format ( n ) )
#######################################
##
## FINISHED COLLECTING DATA - SAVE IT
@ -608,9 +635,10 @@ class CollectHeadCalibrationDataNode:
rospy . loginfo ( ' ************************************* ' )
rospy . loginfo ( ' ' )
rospy . loginfo ( ' Collected {0} samples in total. ' . format ( len ( calibration_data ) ) )
t = time . localtime ( )
capture_date = str ( t . tm_year ) + str ( t . tm_mon ) . zfill ( 2 ) + str ( t . tm_mday ) . zfill ( 2 ) + str ( t . tm_hour ) . zfill ( 2 ) + str ( t . tm_min ) . zfill ( 2 )
capture_date = str ( t . tm_year ) + str ( t . tm_mon ) . zfill ( 2 ) + str ( t . tm_mday ) . zfill ( 2 ) + str ( t . tm_hour ) . zfill (
2 ) + str ( t . tm_min ) . zfill ( 2 )
if collect_check_data :
filename = self . calibration_directory + ' check_head_calibration_data_ ' + capture_date + ' .yaml '
else :
@ -624,7 +652,7 @@ class CollectHeadCalibrationDataNode:
rospy . loginfo ( ' ' )
#######################################
def testrig_data_collect ( self , number_of_samples ) :
calibration_data = [ ]
@ -642,14 +670,14 @@ class CollectHeadCalibrationDataNode:
rospy . loginfo ( ' Target Number of Frames :{0} ' . format ( number_of_samples ) )
rospy . loginfo ( ' ' )
while len ( calibration_data ) < number_of_samples :
while len ( calibration_data ) < number_of_samples :
observation = self . get_samples_testrig ( 1 )
first_pan_tilt = False
calibration_data . extend ( observation )
n = len ( calibration_data )
if ( n % 10 ) == 0 :
rospy . loginfo ( ' {0} samples collected so far. ' . format ( n ) )
#######################################
##
## FINISHED COLLECTING DATA - SAVE IT
@ -661,9 +689,10 @@ class CollectHeadCalibrationDataNode:
rospy . loginfo ( ' ************************************* ' )
rospy . loginfo ( ' ' )
rospy . loginfo ( ' Collected {0} samples in total. ' . format ( len ( calibration_data ) ) )
t = time . localtime ( )
capture_date = str ( t . tm_year ) + str ( t . tm_mon ) . zfill ( 2 ) + str ( t . tm_mday ) . zfill ( 2 ) + str ( t . tm_hour ) . zfill ( 2 ) + str ( t . tm_min ) . zfill ( 2 )
capture_date = str ( t . tm_year ) + str ( t . tm_mon ) . zfill ( 2 ) + str ( t . tm_mday ) . zfill ( 2 ) + str ( t . tm_hour ) . zfill (
2 ) + str ( t . tm_min ) . zfill ( 2 )
filename = self . testrig_data_path + ' testrig_collected_data_ ' + capture_date + ' .yaml '
rospy . loginfo ( ' Saving calibration_data to a YAML file named {0} ' . format ( filename ) )
@ -705,7 +734,7 @@ class CollectHeadCalibrationDataNode:
else :
rospy . init_node ( ' collect_testrig_data ' )
self . node_name = rospy . get_name ( )
self . node_name = rospy . get_name ( )
rospy . loginfo ( " {0} started " . format ( self . node_name ) )
# Obtain the ArUco marker ID numbers.
@ -726,13 +755,15 @@ class CollectHeadCalibrationDataNode:
if not self . test_rig :
filename = rospy . get_param ( ' ~controller_calibration_file ' )
rospy . loginfo ( ' Loading factory default tilt backlash transition angle from the YAML file named {0} ' . format ( filename ) )
rospy . loginfo (
' Loading factory default tilt backlash transition angle from the YAML file named {0} ' . format ( filename ) )
fid = open ( filename , ' r ' )
controller_parameters = yaml . load ( fid )
fid . close ( )
self . tilt_angle_backlash_transition_rad = controller_parameters [ ' tilt_angle_backlash_transition ' ]
deg_per_rad = 180.0 / math . pi
rospy . loginfo ( ' self.tilt_angle_backlash_transition_rad in degrees = {0} ' . format ( self . tilt_angle_backlash_transition_rad * deg_per_rad ) )
deg_per_rad = 180.0 / math . pi
rospy . loginfo ( ' self.tilt_angle_backlash_transition_rad in degrees = {0} ' . format (
self . tilt_angle_backlash_transition_rad * deg_per_rad ) )
self . calibration_directory = rospy . get_param ( ' ~calibration_directory ' )
rospy . loginfo ( ' Using the following directory for calibration files: {0} ' . format ( self . calibration_directory ) )
@ -742,16 +773,18 @@ class CollectHeadCalibrationDataNode:
accel_subscriber = message_filters . Subscriber ( ' /camera/accel/sample_corrected ' , Imu )
aruco_subscriber = message_filters . Subscriber ( ' /aruco/marker_array ' , MarkerArray )
slop_time = 0.1
self . synchronizer = message_filters . ApproximateTimeSynchronizer ( [ accel_subscriber , aruco_subscriber , joint_state_subscriber ] , 10 , slop_time , allow_headerless = True )
self . synchronizer = message_filters . ApproximateTimeSynchronizer (
[ aruco_subscriber , accel_subscriber , joint_state_subscriber ] , 10 , slop_time , allow_headerless = True )
self . synchronizer . registerCallback ( self . calibration_data_callback )
self . trajectory_client = actionlib . SimpleActionClient ( ' /stretch_controller/follow_joint_trajectory ' , FollowJointTrajectoryAction )
self . trajectory_client = actionlib . SimpleActionClient ( ' /stretch_controller/follow_joint_trajectory ' ,
FollowJointTrajectoryAction )
self . trajectory_goal = FollowJointTrajectoryGoal ( )
self . trajectory_goal . goal_time_tolerance = rospy . Time ( 1.0 )
self . point = JointTrajectoryPoint ( )
self . point . time_from_start = rospy . Duration ( 0.0 )
server_reached = self . trajectory_client . wait_for_server ( timeout = rospy . Duration ( 60.0 ) )
if not server_reached :
rospy . signal_shutdown ( ' Unable to connect to arm action server. Timeout exceeded. ' )
@ -769,14 +802,11 @@ class CollectHeadCalibrationDataNode:
accel_subscriber = message_filters . Subscriber ( ' /camera/accel/sample_corrected ' , Imu )
aruco_subscriber = message_filters . Subscriber ( ' /aruco/marker_array ' , MarkerArray )
slop_time = 0.1
self . synchronizer = message_filters . ApproximateTimeSynchronizer ( [ accel_subscriber , aruco_subscriber ] , 10 , slop_time , allow_headerless = True )
self . synchronizer = message_filters . ApproximateTimeSynchronizer ( [ aruco_subscriber ] , 10 , slop_time ,
allow_headerless = True )
self . synchronizer . registerCallback ( self . calibration_data_callback )
rate = rospy . Rate ( self . rate )
self . testrig_data_path = rospy . get_param ( ' ~testrig_data_directory ' )
self . number_of_testrig_samples = rospy . get_param ( ' ~samples ' )
self . testrig_data_collect ( number_of_samples = self . number_of_testrig_samples )