class PatternExecutor(Patternable):
"""
a pattern is only good for one execution.
self.pattern needs to be reset after stop or finish using load_pattern(name_or_pickle)
"""
controller = Any
laser_manager = Any
show_patterning = Bool(False)
_alive = Bool(False)
def __init__(self, *args, **kw):
super(PatternExecutor, self).__init__(*args, **kw)
self._next_point = None
self.pattern = None
self._xy_thread = None
self._power_thread = None
self._z_thread = None
def start(self, show=False):
self._alive = True
if show:
self.show_pattern()
if self.pattern:
self.pattern.clear_graph()
def finish(self):
self._alive = False
self.close_pattern()
self.pattern = None
def set_stage_values(self, sm):
if self.pattern:
self.pattern.set_stage_values(sm)
def set_current_position(self, x, y, z):
if self.isPatterning():
graph = self.pattern.graph
graph.set_data([x], series=1, axis=0)
graph.set_data([y], series=1, axis=1)
graph.add_datum((x, y), series=2)
graph.redraw()
def load_pattern(self, name_or_pickle):
"""
look for name_or_pickle in local pattern dir
if not found try interpreting name_or_pickle is a pickled name_or_pickle
"""
if name_or_pickle is None:
path = self.open_file_dialog()
if path is None:
return
else:
path = self.is_local_pattern(name_or_pickle)
if path:
wfile = open(path, 'rb')
else:
# convert name_or_pickle into a file like obj
wfile = StringIO(name_or_pickle)
# self._load_pattern sets self.pattern
pattern = self._load_pattern(wfile, path)
self.on_trait_change(self.stop, 'canceled')
return pattern
def is_local_pattern(self, name):
def test_name(ni):
path = os.path.join(paths.pattern_dir, ni)
if os.path.isfile(path):
return path
for ni in (name, name + '.lp'):
p = test_name(ni)
if p:
return p
def stop(self):
self._alive = False
if self.controller:
self.info('User requested stop')
self.controller.stop()
if self.pattern is not None:
if self.controller:
self.controller.linear_move(self.pattern.cx, self.pattern.cy, source='pattern stop')
# self.pattern.close_ui()
self.info('Pattern {} stopped'.format(self.pattern_name))
# prevent future stops (AbortJogs from massspec) from executing
self.pattern = None
def isPatterning(self):
return self._alive
def close_pattern(self):
pass
def show_pattern(self):
self.pattern.window_x = 50
self.pattern.window_y = 50
open_view(self.pattern, view='graph_view')
def execute(self, block=False, duration=None, thread_safe=True):
"""
if block is true wait for patterning to finish
before returning
"""
if not self.pattern:
return
self.start(show=self.show_patterning)
evt = None
# if current_thread().name != 'MainThread':
if thread_safe:
evt = Event()
invoke_in_main_thread(self._pre_execute, evt)
while not evt.is_set():
time.sleep(0.05)
else:
self._pre_execute(evt)
self.debug('execute xy pattern')
xyp = self.pattern.xy_pattern_enabled
if duration:
self.pattern.external_duration = float(duration)
if xyp:
self._xy_thread = Thread(target=self._execute_xy_pattern)
self._xy_thread.start()
pp = self.pattern.power_pattern
if pp:
self.debug('execute power pattern')
self._power_thread = Thread(target=self._execute_power_pattern)
self._power_thread.start()
zp = self.pattern.z_pattern
if zp:
self.debug('execute z pattern')
self._z_thread = Thread(target=self._execute_z_pattern)
self._z_thread.start()
if block:
if self._xy_thread:
self._xy_thread.join()
if self._z_thread:
self._z_thread.join()
if self._power_thread:
self._power_thread.join()
self.finish()
def _pre_execute(self, evt):
self.debug('pre execute')
pattern = self.pattern
kind = pattern.kind
if kind in ('SeekPattern', 'DragonFlyPeakPattern'):
self._info = open_view(pattern, view='execution_graph_view')
if evt is not None:
evt.set()
self.debug('pre execute finished')
def _execute_power_pattern(self):
pat = self.pattern
self.info('starting power pattern {}'.format(pat.name))
def func(v):
self.laser_manager.set_laser_power(v)
self._execute_(func, pat.power_values(), pat.power_sample, 'power pattern setpoint={value}')
def _execute_z_pattern(self):
pat = self.pattern
self.info('starting power pattern {}'.format(pat.name))
def func(v):
self.controller.set_z(v)
self._execute_(func, pat.z_values(), pat.z_sample, 'z pattern z={value}')
def _execute_(self, func, vs, period, msg):
for v in vs:
st = time.time()
self.debug(msg.format(value=v))
func(v)
et = st - time.time()
p = period - et
time.sleep(p)
def _execute_xy_pattern(self):
pat = self.pattern
self.info('starting pattern {}'.format(pat.name))
st = time.time()
self.controller.update_position()
time.sleep(1)
pat.cx, pat.cy = self.controller.x, self.controller.y
try:
for ni in range(pat.niterations):
if not self.isPatterning():
break
self.info('doing pattern iteration {}'.format(ni))
self._execute_iteration()
self.controller.linear_move(pat.cx, pat.cy, block=True, source='execute_xy_pattern')
if pat.disable_at_end:
self.laser_manager.disable_device()
self.finish()
self.info('finished pattern: transit time={:0.1f}s'.format(time.time() - st))
except (TargetPositionError, PositionError) as e:
self.finish()
self.controller.stop()
self.laser_manager.emergency_shutoff(str(e))
def _execute_iteration(self):
controller = self.controller
pattern = self.pattern
if controller is not None:
kind = pattern.kind
if kind == 'ArcPattern':
self._execute_arc(controller, pattern)
elif kind == 'CircularContourPattern':
self._execute_contour(controller, pattern)
elif kind in ('SeekPattern', 'DragonFlyPeakPattern'):
self._execute_seek(controller, pattern)
else:
self._execute_points(controller, pattern, multipoint=False)
def _execute_points(self, controller, pattern, multipoint=False):
pts = pattern.points_factory()
if multipoint:
controller.multiple_point_move(pts, velocity=pattern.velocity)
else:
for x, y in pts:
if not self.isPatterning():
break
controller.linear_move(x, y, block=True,
velocity=pattern.velocity)
def _execute_contour(self, controller, pattern):
for ni in range(pattern.nsteps):
if not self.isPatterning():
break
r = pattern.radius * (1 + ni * pattern.percent_change)
self.info('doing circular contour {} {}'.format(ni + 1, r))
controller.single_axis_move('x', pattern.cx + r,
block=True)
controller.arc_move(pattern.cx, pattern.cy, 360,
block=True)
time.sleep(0.1)
def _execute_arc(self, controller, pattern):
controller.single_axis_move('x', pattern.radius, block=True)
controller.arc_move(pattern.cx, pattern.cy, pattern.degrees, block=True)
def _execute_seek(self, controller, pattern):
duration = pattern.duration
total_duration = pattern.total_duration
lm = self.laser_manager
sm = lm.stage_manager
ld = sm.lumen_detector
ld.mask_kind = pattern.mask_kind
ld.custom_mask = pattern.custom_mask_radius
osdp = sm.canvas.show_desired_position
sm.canvas.show_desired_position = False
st = time.time()
self.debug('Pre seek delay {}'.format(pattern.pre_seek_delay))
time.sleep(pattern.pre_seek_delay)
self.debug('starting seek')
self.debug('total duration {}'.format(total_duration))
self.debug('dwell duration {}'.format(duration))
if pattern.kind == 'DragonFlyPeakPattern':
try:
self._dragonfly_peak(st, pattern, lm, controller)
except BaseException as e:
self.critical('Dragonfly exception. {}'.format(e))
else:
self._hill_climber(st, controller, pattern)
sm.canvas.show_desired_position = osdp
from pyface.gui import GUI
GUI.invoke_later(self._info.dispose)
def _dragonfly_peak(self, st, pattern, lm, controller):
# imgplot, imgplot2, imgplot3 = pattern.setup_execution_graph()
# imgplot, imgplot2 = pattern.setup_execution_graph()
imgplot, imgplot2 = pattern.setup_execution_graph(nplots=2)
cx, cy = pattern.cx, pattern.cy
sm = lm.stage_manager
linear_move = controller.linear_move
in_motion = controller.in_motion
find_lum_peak = sm.find_lum_peak
set_data = imgplot.data.set_data
set_data2 = imgplot2.data.set_data
duration = pattern.duration
sat_threshold = pattern.saturation_threshold
total_duration = pattern.total_duration
min_distance = pattern.min_distance
aggressiveness = pattern.aggressiveness
update_period = pattern.update_period / 1000.
move_threshold = pattern.move_threshold
blur = pattern.blur
px, py = cx, cy
point_gen = None
cnt = 0
peak = None
while time.time() - st < total_duration:
if not self._alive:
break
sats = []
pts = []
ist = time.time()
npt = None
self.debug('starting iteration={}, in_motion={}'.format(cnt, in_motion()))
while time.time() - ist < duration or in_motion():
args = find_lum_peak(min_distance, blur)
if args is None:
continue
pt, peakcol, peakrow, peak_img, sat, src = args
sats.append(sat)
if peak is None:
peak = peak_img
else:
peak = ((peak.astype('int16') - 2) + peak_img).clip(0, 255)
img = gray2rgb(peak).astype(uint8)
src = gray2rgb(src).astype(uint8)
if pt:
pts.append(pt)
c = circle(peakrow, peakcol, min_distance / 2)
img[c] = (255, 0, 0)
src[c] = (255, 0, 0)
# set_data('imagedata', src)
set_data2('imagedata', src)
set_data('imagedata', img)
sleep(update_period)
self.debug('iteration {} finished, npts={}'.format(cnt, len(pts)))
pattern.position_str = '---'
if pts:
w = array(sats)
avg_sat_score = w.mean()
self.debug('Average Saturation: {} threshold={}'.format(avg_sat_score, sat_threshold))
pattern.average_saturation = avg_sat_score
if avg_sat_score < sat_threshold:
pts = array(pts)
x, y, w = pts.T
ws = w.sum()
nx = (x * w).sum() / ws
ny = (y * w).sum() / ws
self.debug('New point {},{}'.format(nx, ny))
npt = nx, ny, 1
else:
continue
# if npt is None:
# if not point_gen:
# point_gen = pattern.point_generator()
# # wait = False
# npt = next(point_gen)
# self.debug('generating new point={}'.format(npt))
#
# else:
# point_gen = None
# wait = True
if npt is None:
block = total_duration - (time.time() - st) < duration
linear_move(cx, cy, source='recenter_dragonfly{}'.format(cnt), block=block, velocity=pattern.velocity,
use_calibration=False)
pattern.position_str = 'Return to Center'
px, py = cx, cy
continue
try:
scalar = npt[2]
except IndexError:
scalar = 1
ascalar = scalar * aggressiveness
dx = npt[0] / sm.pxpermm * ascalar
dy = npt[1] / sm.pxpermm * ascalar
if abs(dx) < move_threshold or abs(dy) < move_threshold:
self.debug('Deviation too small dx={},dy={}'.format(dx, dy, move_threshold))
pattern.position_str = 'Deviation too small'
continue
px += dx
py -= dy
self.debug('i: {}. point={},{}. '
'Intensitiy Scalar={}, Modified Scalar={}'.format(cnt, px, py, scalar, ascalar))
if not pattern.validate(px, py):
self.debug('invalid position. {},{}'.format(px, py))
px, py = pattern.reduce_vector_magnitude(px, py, 0.85)
self.debug('reduced vector magnitude. new pos={},{}'.format(px, py))
pattern.position_str = '{:0.5f},{:0.5f}'.format(px, py)
# if there is less than 1 duration left then block is true
block = total_duration - (time.time() - st) < duration
self.debug('blocking ={}'.format(block))
linear_move(px, py, source='dragonfly{}'.format(cnt), block=block, velocity=pattern.velocity,
use_calibration=False)
# if wait:
# et = time.time() - ist
# d = duration - et
# if d > 0:
# time.sleep(d)
cnt += 1
# time.sleep(1)
self.debug('dragonfly complete')
controller.block()
def _hill_climber(self, st, controller, pattern):
g = pattern.execution_graph
imgplot, cp = pattern.setup_execution_graph()
cx, cy = pattern.cx, pattern.cy
sm = self.laser_manager.stage_manager
linear_move = controller.linear_move
get_scores = sm.get_scores
moving = sm.moving
update_axes = sm.update_axes
set_data = imgplot.data.set_data
sat_threshold = pattern.saturation_threshold
total_duration = pattern.total_duration
duration = pattern.duration
pattern.perimeter_radius *= sm.pxpermm
avg_sat_score = -1
# current_x, current_y =None, None
for i, pt in enumerate(pattern.point_generator()):
update_plot = True
x, y = pt.x, pt.y
ax, ay = cx + x, cy + y
if not self._alive:
break
if time.time() - st > total_duration:
break
# use_update_point = False
if avg_sat_score < sat_threshold:
# use_update_point = False
# current_x, current_y = x, y
linear_move(ax, ay, block=False, velocity=pattern.velocity,
use_calibration=False,
update=False,
immediate=True)
else:
self.debug('Saturation target reached. not moving')
update_plot = False
density_scores = []
ts = []
saturation_scores = []
positions = []
def measure_scores(update=False):
if update:
update_axes()
positions.append((controller.x, controller.y))
score_density, score_saturation, img = get_scores()
density_scores.append(score_density)
saturation_scores.append(score_saturation)
set_data('imagedata', img)
ts.append(time.time() - st)
time.sleep(0.1)
while moving(force_query=True):
measure_scores(update=True)
mt = time.time()
while time.time() - mt < duration:
measure_scores()
if density_scores:
n = len(density_scores)
density_scores = array(density_scores)
saturation_scores = array(saturation_scores)
weights = [1 / (max(0.0001, ((xi - ax) ** 2 + (yi - ay) ** 2)) ** 0.5) for xi, yi in positions]
avg_score = average(density_scores, weights=weights)
avg_sat_score = average(saturation_scores, weights=weights)
score = avg_score
m, b = polyfit(ts, density_scores, 1)
if m > 0:
score *= (1 + m)
pattern.set_point(score, pt)
self.debug('i:{} XY:({:0.5f},{:0.5f})'.format(i, x, y))
self.debug('Density. AVG:{:0.3f} N:{} Slope:{:0.3f}'.format(avg_score, n, m))
self.debug('Modified Density Score: {:0.3f}'.format(score))
self.debug('Saturation. AVG:{:0.3f}'.format(avg_sat_score))
if update_plot:
cp.add_point((x, y))
g.add_datum((x, y), plotid=0)
t = time.time() - st
g.add_datum((t, avg_score), plotid=1)
# g.add_bulk_data(ts, density_scores, plotid=1, series=1)
g.add_datum((t, score),
ypadding='0.1',
ymin_anchor=-0.1,
update_y_limits=True, plotid=1)
update_axes()
class AutoFocusManager(Manager):
"""
currently uses passive focus techniques
see
http://en.wikipedia.org/wiki/Autofocus
"""
video = Any
laser_manager = Any
stage_controller = Any
canvas = Any
parameters = Instance(FocusParameters)
configure_button = Button('configure')
autofocus_button = Event
autofocus_label = Property(depends_on='autofocusing')
autofocusing = Bool
# threading event for cancel signal
_evt_autofocusing = None
image = Instance(Image, ())
graph = None
def dump_parameters(self):
p = os.path.join(paths.hidden_dir, 'autofocus_configure')
self.info('dumping parameters to {}'.format(p))
with open(p, 'wb') as f:
pickle.dump(self.parameters, f)
def load_parameter(self):
p = os.path.join(paths.hidden_dir, 'autofocus_configure')
if os.path.isfile(p):
with open(p, 'rb') as f:
try:
params = pickle.load(f)
self.info('loading parameters from {}'.format(p))
if not isinstance(params, FocusParameters):
self.info('out of date parameters file. using default')
params = FocusParameters()
return params
except Exception as e:
print('autofocus load parameter', e)
return FocusParameters()
else:
return FocusParameters()
def passive_focus(self, block=False, **kw):
self._evt_autofocusing = TEvent()
self._evt_autofocusing.clear()
# manager = self.laser_manager
oper = self.parameters.operator
self.info('passive focus. operator = {}'.format(oper))
g = self.graph
if not g:
g = Graph(plotcontainer_dict=dict(padding=10),
window_x=0.70,
window_y=20,
window_width=325,
window_height=325,
window_title='Autofocus'
)
self.graph = g
g.clear()
g.new_plot(padding=[40, 10, 10, 40],
xtitle='Z (mm)',
ytitle='Focus Measure ({})'.format(oper)
)
g.new_series()
g.new_series()
invoke_in_main_thread(self._open_graph)
target = self._passive_focus
self._passive_focus_thread = Thread(name='autofocus', target=target,
args=(self._evt_autofocusing,
),
kwargs=kw
)
self._passive_focus_thread.start()
if block:
# while 1:
# if not self._passive_focus_thread.isRunning():
# break
# time.sleep(0.25)
self._passive_focus_thread.join()
def _open_graph(self):
ui = self.graph.edit_traits()
self.add_window(ui)
def stop_focus(self):
if self.stage_controller:
self.stage_controller.stop()
self.info('autofocusing stopped by user')
def _passive_focus(self, stop_signal, set_zoom=True):
'''
sweep z looking for max focus measure
FMgrad= roberts or sobel (sobel removes noise)
FMvar = intensity variance
'''
self.autofocusing = True
manager = self.laser_manager
fstart = self.parameters.fstart
fend = self.parameters.fend
step_scalar = self.parameters.step_scalar
zoom = self.parameters.zoom
operator = self.parameters.operator
steps = step_scalar * (max(fend, fstart) - min(fend, fstart)) + 1
prev_zoom = None
if set_zoom and \
manager is not None and \
zoom:
motor = manager.get_motor('zoom')
if motor:
prev_zoom = motor.data_position
self.info('setting zoom: {}'.format(zoom))
manager.set_motor('zoom', zoom, block=True)
time.sleep(1.5)
args = self._do_focusing(fstart, fend, steps, operator)
if manager is not None:
if prev_zoom is not None:
self.info('returning to previous zoom: {}'.format(prev_zoom))
manager.set_motor('zoom', prev_zoom, block=True)
if args:
mi, fmi, ma, fma = args
self.info('''passive focus results:Operator={}
ImageGradmin={} (z={})
ImageGradmax={}, (z={})'''.format(operator, mi, fmi, ma, fma))
focus_pos = fma
self.graph.add_vertical_rule(focus_pos)
self.graph.redraw()
# self.graph.add_vertical_rule(fma)
self.info('calculated focus z= {}'.format(focus_pos))
# if set_z:
controller = self.stage_controller
if controller is not None:
if not stop_signal.isSet():
controller.single_axis_move('z', focus_pos, block=True)
controller._z_position = focus_pos
controller.z_progress = focus_pos
self.autofocusing = False
def _cancel_sweep(self, vo):
if self._evt_autofocusing.isSet():
# return to original velocity
self.autofocusing = False
self._reset_velocity(vo)
return True
def _reset_velocity(self, vo):
if self.stage_controller:
pdict = dict(velocity=vo, key='z')
self.stage_controller.set_single_axis_motion_parameters(pdict=pdict)
def _do_focusing(self, start, end, steps, operator):
screen_roi = self._get_roi()
self._add_focus_area_rect(*screen_roi)
src = self._load_source()
src = asarray(src)
h, w, _d = src.shape
cx = w / 2.
cy = h / 2.
cw = self.parameters.crop_width
ch = self.parameters.crop_height
roi = cx, cy, cw, ch
'''
start the z in motion and take pictures as you go
query stage_controller to get current z
'''
self.info('focus sweep start={} end={}'.format(start, end))
# move to start position
controller = self.stage_controller
if controller:
vo = controller.axes['z'].velocity
if self._cancel_sweep(vo):
return
self.graph.set_x_limits(min(start, end), max(start, end), pad=2)
# sweep 1 and velocity 1
self._do_sweep(start, end, velocity=self.parameters.velocity_scalar1)
fms, focussteps = self._collect_focus_measures(operator, roi)
if not (fms and focussteps):
return
# reached end of sweep
# calculate a nominal focal point
args = self._calculate_nominal_focal_point(fms, focussteps)
if not args:
return
nfocal = args[3]
nwin = self.parameters.negative_window
pwin = self.parameters.positive_window
if self._cancel_sweep(vo):
return
nstart, nend = max(0, nfocal - nwin), nfocal + pwin
# mi = min(min(nstart, nend), min(start, end))
# ma = max(max(nstart, nend), max(start, end))
# self.graph.set_x_limits(mi, ma, pad=2)
time.sleep(1)
# do a slow tight sweep around the nominal focal point
self._do_sweep(nstart, nend, velocity=self.parameters.velocity_scalar2)
fms, focussteps = self._collect_focus_measures(operator, roi, series=1)
self._reset_velocity(vo)
else:
focussteps = linspace(0, 10, 11)
fms = -(focussteps - 5) ** 2 + 10 + random.random(11)
self.info('frames analyzed {}'.format(len(fms)))
# self.canvas.markupcontainer.pop('croprect')
return self._calculate_nominal_focal_point(fms, focussteps)
def _do_sweep(self, start, end, velocity=None):
controller = self.stage_controller
controller.single_axis_move('z', start, block=True)
# time.sleep(0.1)
# explicitly check for motion
# controller.block(axis='z')
if velocity:
vo = controller.axes['z'].velocity
controller.set_single_axis_motion_parameters(pdict=dict(velocity=vo * velocity,
key='z'))
self.info('starting sweep from {}'.format(controller.z_progress))
# pause before moving to end
time.sleep(0.25)
controller.single_axis_move('z', end, update=100, immediate=True)
def _collect_focus_measures(self, operator, roi, series=0):
controller = self.stage_controller
focussteps = []
fms = []
if controller.timer:
p = controller.timer.get_interval()
self.debug('controller timer period {}'.format(p))
pz = controller.z_progress
while 1:
src = self._load_source()
x = controller.z_progress
if x != pz:
y = self._calculate_focus_measure(src, operator, roi)
self.graph.add_datum((x, y), series=series)
focussteps.append(x)
fms.append(y)
pz = x
if not (controller.timer.isActive() and \
not self._evt_autofocusing.isSet()):
break
time.sleep(p)
self.debug('sweep finished')
return fms, focussteps
def _calculate_nominal_focal_point(self, fms, focussteps):
if fms:
sfms = smooth(fms)
if sfms is not None:
self.graph.new_series(focussteps, sfms)
self.graph.redraw()
fmi = focussteps[argmin(sfms)]
fma = focussteps[argmax(sfms)]
mi = min(sfms)
ma = max(sfms)
return mi, fmi, ma, fma
def _calculate_focus_measure(self, src, operator, roi):
'''
see
IMPLEMENTATION OF A PASSIVE AUTOMATIC FOCUSING ALGORITHM
FOR DIGITAL STILL CAMERA
DOI 10.1109/30.468047
and
http://cybertron.cg.tu-berlin.de/pdci10/frankencam/#autofocus
'''
# need to resize to 640,480. this is the space the roi is in
# s = resize(grayspace(pychron), 640, 480)
src = grayspace(src)
v = crop(src, *roi)
di = dict(var=lambda x:variance(x),
laplace=lambda x: get_focus_measure(x, 'laplace'),
sobel=lambda x: ndsum(generic_gradient_magnitude(x, sobel, mode='nearest'))
)
func = di[operator]
return func(v)
def image_view(self):
v = View(Item('image', show_label=False, editor=ImageEditor(),
width=640,
height=480,
style='custom'))
return v
def traits_view(self):
v = View(
HGroup(self._button_factory('autofocus_button', 'autofocus_label'),
Item('configure_button', show_label=False),
show_border=True,
label='Autofocus'
)
)
return v
def configure_view(self):
v = View(Item('parameters', style='custom', show_label=False),
handler=ConfigureHandler,
buttons=['OK', 'Cancel'],
kind='livemodal',
title='Configure Autofocus',
x=0.80,
y=0.05
)
return v
def _load_source(self):
src = self.video.get_frame()
return src
# if pychron:
# return Image.new_frame(pychron)
# self.image.load(pychron)
# return self.image.source_frame
def _get_roi(self):
w = self.parameters.crop_width
h = self.parameters.crop_height
cx, cy = self.canvas.get_center_rect_position(w, h)
# cw, ch = self.canvas.outer_bounds
# print w, h, cw, ch
# cx = cw / 2. - w / 2.
# cy = ch / 2. - h / 2.
# cx = (cw - w) / 2.
# cy = (ch - h) / 2.
# cx = (640 * self.canvas.scaling - w) / 2
# cy = (480 * self.canvas.scaling - h) / 2
roi = cx, cy, w, h
return roi
def _add_focus_area_rect(self, cx, cy, w, h):
# pl = self.canvas.padding_left
# pb = self.canvas.padding_bottom
self.canvas.remove_item('croprect')
self.canvas.add_markup_rect(cx, cy, w, h, identifier='croprect')
def _autofocus_button_fired(self):
if not self.autofocusing:
self.autofocusing = True
self.passive_focus()
else:
self.autofocusing = False
self._evt_autofocusing.set()
self.stop_focus()
def _configure_button_fired(self):
self._crop_rect_update()
self.edit_traits(view='configure_view', kind='livemodal')
self.canvas.remove_item('croprect')
# try:
# self.canvas.markupcontainer.pop('croprect')
# except KeyError:
# pass
@on_trait_change('parameters:[_crop_width,_crop_height]')
def _crop_rect_update(self):
roi = self._get_roi()
self._add_focus_area_rect(*roi)
def _get_autofocus_label(self):
return 'Autofocus' if not self.autofocusing else 'Stop'
def _parameters_default(self):
return self.load_parameter()
def _autofocusing_changed(self, new):
if not new:
self.canvas.remove_item('croprect')
class PatternExecutor(Patternable):
"""
a pattern is only good for one execution.
self.pattern needs to be reset after stop or finish using load_pattern(name_or_pickle)
"""
controller = Any
laser_manager = Any
show_patterning = Bool(False)
_alive = Bool(False)
def __init__(self, *args, **kw):
super(PatternExecutor, self).__init__(*args, **kw)
self._next_point = None
self.pattern = None
self._xy_thread = None
self._power_thread = None
self._z_thread = None
def start(self, show=False):
self._alive = True
if show:
self.show_pattern()
if self.pattern:
self.pattern.clear_graph()
def finish(self):
self._alive = False
self.close_pattern()
self.pattern = None
def set_stage_values(self, sm):
if self.pattern:
self.pattern.set_stage_values(sm)
def set_current_position(self, x, y, z):
if self.isPatterning():
graph = self.pattern.graph
graph.set_data([x], series=1, axis=0)
graph.set_data([y], series=1, axis=1)
graph.add_datum((x, y), series=2)
graph.redraw()
def load_pattern(self, name_or_pickle):
"""
look for name_or_pickle in local pattern dir
if not found try interpreting name_or_pickle is a pickled name_or_pickle
"""
if name_or_pickle is None:
path = self.open_file_dialog()
if path is None:
return
else:
path = self.is_local_pattern(name_or_pickle)
if path:
wfile = open(path, 'rb')
else:
# convert name_or_pickle into a file like obj
wfile = StringIO(name_or_pickle)
# self._load_pattern sets self.pattern
pattern = self._load_pattern(wfile, path)
self.on_trait_change(self.stop, 'canceled')
return pattern
def is_local_pattern(self, name):
def test_name(ni):
path = os.path.join(paths.pattern_dir, ni)
if os.path.isfile(path):
return path
for ni in (name, name + '.lp'):
p = test_name(ni)
if p:
return p
def stop(self):
self._alive = False
if self.controller:
self.info('User requested stop')
self.controller.stop()
if self.pattern is not None:
if self.controller:
self.controller.linear_move(self.pattern.cx,
self.pattern.cy,
source='pattern stop')
# self.pattern.close_ui()
self.info('Pattern {} stopped'.format(self.pattern_name))
# prevent future stops (AbortJogs from massspec) from executing
self.pattern = None
def isPatterning(self):
return self._alive
def close_pattern(self):
pass
def show_pattern(self):
self.pattern.window_x = 50
self.pattern.window_y = 50
open_view(self.pattern, view='graph_view')
def execute(self, block=False, duration=None, thread_safe=True):
"""
if block is true wait for patterning to finish
before returning
"""
if not self.pattern:
return
self.start(show=self.show_patterning)
evt = None
# if current_thread().name != 'MainThread':
if thread_safe:
evt = Event()
invoke_in_main_thread(self._pre_execute, evt)
while not evt.is_set():
time.sleep(0.05)
else:
self._pre_execute(evt)
self.debug('execute xy pattern')
xyp = self.pattern.xy_pattern_enabled
if duration:
self.pattern.external_duration = float(duration)
if xyp:
self._xy_thread = Thread(target=self._execute_xy_pattern)
self._xy_thread.start()
pp = self.pattern.power_pattern
if pp:
self.debug('execute power pattern')
self._power_thread = Thread(target=self._execute_power_pattern)
self._power_thread.start()
zp = self.pattern.z_pattern
if zp:
self.debug('execute z pattern')
self._z_thread = Thread(target=self._execute_z_pattern)
self._z_thread.start()
if block:
if self._xy_thread:
self._xy_thread.join()
if self._z_thread:
self._z_thread.join()
if self._power_thread:
self._power_thread.join()
self.finish()
def _pre_execute(self, evt):
self.debug('pre execute')
pattern = self.pattern
kind = pattern.kind
if kind in ('SeekPattern', 'DragonFlyPeakPattern'):
self._info = open_view(pattern, view='execution_graph_view')
if evt is not None:
evt.set()
self.debug('pre execute finished')
def _execute_power_pattern(self):
pat = self.pattern
self.info('starting power pattern {}'.format(pat.name))
def func(v):
self.laser_manager.set_laser_power(v)
self._execute_(func, pat.power_values(), pat.power_sample,
'power pattern setpoint={value}')
def _execute_z_pattern(self):
pat = self.pattern
self.info('starting power pattern {}'.format(pat.name))
def func(v):
self.controller.set_z(v)
self._execute_(func, pat.z_values(), pat.z_sample,
'z pattern z={value}')
def _execute_(self, func, vs, period, msg):
for v in vs:
st = time.time()
self.debug(msg.format(value=v))
func(v)
et = st - time.time()
p = period - et
time.sleep(p)
def _execute_xy_pattern(self):
pat = self.pattern
self.info('starting pattern {}'.format(pat.name))
st = time.time()
self.controller.update_position()
time.sleep(1)
pat.cx, pat.cy = self.controller.x, self.controller.y
try:
for ni in range(pat.niterations):
if not self.isPatterning():
break
self.info('doing pattern iteration {}'.format(ni))
self._execute_iteration(ni)
self.controller.linear_move(pat.cx,
pat.cy,
block=True,
source='execute_xy_pattern')
if pat.disable_at_end:
self.laser_manager.disable_device()
self.finish()
self.info(
'finished pattern: transit time={:0.1f}s'.format(time.time() -
st))
except (TargetPositionError, PositionError) as e:
self.finish()
self.controller.stop()
self.laser_manager.emergency_shutoff(str(e))
def _execute_iteration(self, iteration):
controller = self.controller
pattern = self.pattern
if controller is not None:
kind = pattern.kind
if kind == 'ArcPattern':
self._execute_arc(controller, pattern)
elif kind == 'CircularContourPattern':
self._execute_contour(controller, pattern)
elif kind in ('SeekPattern', 'DragonFlyPeakPattern'):
self._execute_seek(controller, pattern)
else:
self._execute_points(controller,
pattern,
iteration,
multipoint=False)
def _execute_points(self,
controller,
pattern,
iteration,
multipoint=False):
pts = pattern.points_factory()
if multipoint:
controller.multiple_point_move(pts, velocity=pattern.velocity)
else:
for i, (x, y) in enumerate(pts):
self.debug('Pattern Point. {},{}'.format(iteration, i))
if not self.isPatterning():
break
# skip first point after first iteration
if iteration and not i:
self.debug('skipping first point')
continue
self.debug('Pattern Point. {},{}: {},{}'.format(
iteration, i, x, y))
controller.linear_move(x,
y,
block=True,
velocity=pattern.velocity)
def _execute_contour(self, controller, pattern):
for ni in range(pattern.nsteps):
if not self.isPatterning():
break
r = pattern.radius * (1 + ni * pattern.percent_change)
self.info('doing circular contour {} {}'.format(ni + 1, r))
controller.single_axis_move('x', pattern.cx + r, block=True)
controller.arc_move(pattern.cx, pattern.cy, 360, block=True)
time.sleep(0.1)
def _execute_arc(self, controller, pattern):
controller.single_axis_move('x', pattern.radius, block=True)
controller.arc_move(pattern.cx,
pattern.cy,
pattern.degrees,
block=True)
def _execute_seek(self, controller, pattern):
duration = pattern.duration
total_duration = pattern.total_duration
lm = self.laser_manager
sm = lm.stage_manager
ld = sm.lumen_detector
ld.mask_kind = pattern.mask_kind
ld.custom_mask = pattern.custom_mask_radius
osdp = sm.canvas.show_desired_position
sm.canvas.show_desired_position = False
st = time.time()
self.debug('Pre seek delay {}'.format(pattern.pre_seek_delay))
time.sleep(pattern.pre_seek_delay)
self.debug('starting seek')
self.debug('total duration {}'.format(total_duration))
self.debug('dwell duration {}'.format(duration))
if pattern.kind == 'DragonFlyPeakPattern':
try:
self._dragonfly_peak(st, pattern, lm, controller)
except BaseException as e:
self.critical('Dragonfly exception. {}'.format(e))
self.debug_exception()
else:
self._hill_climber(st, controller, pattern)
sm.canvas.show_desired_position = osdp
from pyface.gui import GUI
GUI.invoke_later(self._info.dispose)
def _dragonfly_peak(self, st, pattern, lm, controller):
# imgplot, imgplot2, imgplot3 = pattern.setup_execution_graph()
# imgplot, imgplot2 = pattern.setup_execution_graph()
imgplot, imgplot2 = pattern.setup_execution_graph(nplots=2)
cx, cy = pattern.cx, pattern.cy
sm = lm.stage_manager
linear_move = controller.linear_move
in_motion = controller.in_motion
find_lum_peak = sm.find_lum_peak
pxpermm = sm.pxpermm
set_data = imgplot.data.set_data
set_data2 = imgplot2.data.set_data
# set_data3 = imgplot3.data.set_data
duration = pattern.duration
sat_threshold = pattern.saturation_threshold
total_duration = pattern.total_duration
min_distance = pattern.min_distance
aggressiveness = pattern.aggressiveness
update_period = pattern.update_period / 1000.
move_threshold = pattern.move_threshold
blur = pattern.blur
px, py = cx, cy
ncx, ncy = cx, cy
point_gen = None
cnt = 0
# peak = None
oimg = sm.get_preprocessed_src()
pos_img = zeros_like(oimg, dtype='int16')
per_img = zeros_like(oimg, dtype='int16')
img_h, img_w = pos_img.shape
perimeter_circle = circle(img_h / 2, img_w / 2,
pattern.perimeter_radius * pxpermm)
color = 2**15 - 1
per_img[perimeter_circle] = 50
set_data('imagedata', gray2rgb(per_img.astype(uint8)))
while time.time() - st < total_duration:
if not self._alive:
break
sats = []
pts = []
ist = time.time()
npt = None
self.debug('starting iteration={}, in_motion={}'.format(
cnt, in_motion()))
while time.time() - ist < duration or in_motion():
args = find_lum_peak(min_distance, blur)
if args is None:
sleep(update_period / 5)
continue
sleep(update_period)
pt, peakcol, peakrow, peak_img, sat, src = args
sats.append(sat)
# if peak is None:
# peak = peak_img
# else:
# peak = ((peak.astype('int16') - 2) + peak_img).clip(0, 255)
# img = gray2rgb(peak).astype(uint8)
src = gray2rgb(src).astype(uint8)
if pt:
pts.append(pt)
c = circle(peakrow, peakcol, 2)
# img[c] = (255, 0, 0)
src[c] = (255, 0, 0)
# set_data('imagedata', src)
set_data2('imagedata', src)
# set_data('imagedata', img)
self.debug('iteration {} finished, npts={}'.format(cnt, len(pts)))
pattern.position_str = NULL_STR
if pts:
w = array(sats)
avg_sat_score = w.mean()
self.debug('Average Saturation: {} threshold={}'.format(
avg_sat_score, sat_threshold))
pattern.average_saturation = avg_sat_score
if avg_sat_score < sat_threshold:
# pts = array(pts)
x, y, w = array(pts).T
ws = w.sum()
nx = (x * w).sum() / ws
ny = (y * w).sum() / ws
self.debug('New point {},{}'.format(nx, ny))
npt = nx, ny, 1
else:
continue
if npt is None:
if not point_gen:
point_gen = pattern.point_generator()
# wait = False
x, y = next(point_gen)
px, py = ncx + x, ncy + y
self.debug('generating new point={},{} ---- {},{}'.format(
x, y, px, py))
else:
point_gen = None
# wait = True
if npt is None:
block = total_duration - (time.time() - st) < duration
linear_move(cx,
cy,
source='recenter_dragonfly{}'.format(cnt),
block=block,
velocity=pattern.velocity,
use_calibration=False)
pattern.position_str = 'Return to Center'
px, py = cx, cy
continue
try:
scalar = npt[2]
except IndexError:
scalar = 1
ascalar = scalar * aggressiveness
dx = npt[0] / pxpermm * ascalar
dy = npt[1] / pxpermm * ascalar
if abs(dx) < move_threshold or abs(dy) < move_threshold:
self.debug('Deviation too small dx={},dy={}'.format(
dx, dy, move_threshold))
pattern.position_str = 'Deviation too small'
continue
px += dx
py -= dy
self.debug('i: {}. point={},{}. '
'Intensitiy Scalar={}, Modified Scalar={}'.format(
cnt, px, py, scalar, ascalar))
ncx, ncy = px, py
if not pattern.validate(px, py):
self.debug('invalid position. {},{}'.format(px, py))
curx = px - dx
cury = py + dy
vx = curx - cx
vy = cury - cy
px = vx * aggressiveness + cx
py = vy * aggressiveness + cy
self.debug('reduced vector magnitude. new pos={},{}'.format(
px, py))
# for safety validate this new position
# if above calculation is correct the new position should always be valid
if not pattern.validate(px, py):
self.debug(
'vector calculations incorrect. moving to center position'
)
px, py = cx, cy
ncx, ncy = px, py
pattern.position_str = '{:0.5f},{:0.5f}'.format(px, py)
# if there is less than 1 duration left then block is true
block = total_duration - (time.time() - st) < duration
self.debug('blocking ={}'.format(block))
linear_move(px,
py,
source='dragonfly{}'.format(cnt),
block=block,
velocity=pattern.velocity,
use_calibration=False)
ay, ax = py - cy, px - cx
# self.debug('position mm ax={},ay={}'.format(ax, ay))
ay, ax = int(-ay * pxpermm) + img_h / 2, int(
ax * pxpermm) + img_w / 2
# self.debug('position pixel ax={},ay={}'.format(ax, ay))
pos_img -= 5
pos_img = pos_img.clip(0, color)
c = circle(ay, ax, 2)
pos_img[c] = color - 60
nimg = ((pos_img + per_img).astype(uint8))
set_data('imagedata', gray2rgb(nimg))
cnt += 1
self.debug('dragonfly complete')
controller.block()
def _hill_climber(self, st, controller, pattern):
g = pattern.execution_graph
imgplot, cp = pattern.setup_execution_graph()
cx, cy = pattern.cx, pattern.cy
sm = self.laser_manager.stage_manager
linear_move = controller.linear_move
get_scores = sm.get_scores
moving = sm.moving
update_axes = sm.update_axes
set_data = imgplot.data.set_data
sat_threshold = pattern.saturation_threshold
total_duration = pattern.total_duration
duration = pattern.duration
pattern.perimeter_radius *= sm.pxpermm
avg_sat_score = -1
# current_x, current_y =None, None
for i, pt in enumerate(pattern.point_generator()):
update_plot = True
x, y = pt.x, pt.y
ax, ay = cx + x, cy + y
if not self._alive:
break
if time.time() - st > total_duration:
break
# use_update_point = False
if avg_sat_score < sat_threshold:
# use_update_point = False
# current_x, current_y = x, y
linear_move(ax,
ay,
block=False,
velocity=pattern.velocity,
use_calibration=False,
update=False,
immediate=True)
else:
self.debug('Saturation target reached. not moving')
update_plot = False
density_scores = []
ts = []
saturation_scores = []
positions = []
def measure_scores(update=False):
if update:
update_axes()
positions.append((controller.x, controller.y))
score_density, score_saturation, img = get_scores()
density_scores.append(score_density)
saturation_scores.append(score_saturation)
set_data('imagedata', img)
ts.append(time.time() - st)
time.sleep(0.1)
while moving(force_query=True):
measure_scores(update=True)
mt = time.time()
while time.time() - mt < duration:
measure_scores()
if density_scores:
n = len(density_scores)
density_scores = array(density_scores)
saturation_scores = array(saturation_scores)
weights = [
1 / (max(0.0001, ((xi - ax)**2 + (yi - ay)**2))**0.5)
for xi, yi in positions
]
avg_score = average(density_scores, weights=weights)
avg_sat_score = average(saturation_scores, weights=weights)
score = avg_score
m, b = polyfit(ts, density_scores, 1)
if m > 0:
score *= (1 + m)
pattern.set_point(score, pt)
self.debug('i:{} XY:({:0.5f},{:0.5f})'.format(i, x, y))
self.debug('Density. AVG:{:0.3f} N:{} Slope:{:0.3f}'.format(
avg_score, n, m))
self.debug('Modified Density Score: {:0.3f}'.format(score))
self.debug('Saturation. AVG:{:0.3f}'.format(avg_sat_score))
if update_plot:
cp.add_point((x, y))
g.add_datum((x, y), plotid=0)
t = time.time() - st
g.add_datum((t, avg_score), plotid=1)
# g.add_bulk_data(ts, density_scores, plotid=1, series=1)
g.add_datum((t, score),
ypadding='0.1',
ymin_anchor=-0.1,
update_y_limits=True,
plotid=1)
update_axes()
class AutoFocusManager(Manager):
"""
currently uses passive focus techniques
see
http://en.wikipedia.org/wiki/Autofocus
"""
video = Any
laser_manager = Any
stage_controller = Any
canvas = Any
parameters = Instance(FocusParameters)
configure_button = Button('configure')
autofocus_button = Event
autofocus_label = Property(depends_on='autofocusing')
autofocusing = Bool
# threading event for cancel signal
_evt_autofocusing = None
image = Instance(Image, ())
graph = None
def dump_parameters(self):
p = os.path.join(paths.hidden_dir, 'autofocus_configure')
self.info('dumping parameters to {}'.format(p))
with open(p, 'wb') as f:
pickle.dump(self.parameters, f)
def load_parameter(self):
p = os.path.join(paths.hidden_dir, 'autofocus_configure')
if os.path.isfile(p):
with open(p, 'rb') as f:
try:
params = pickle.load(f)
self.info('loading parameters from {}'.format(p))
if not isinstance(params, FocusParameters):
self.info('out of date parameters file. using default')
params = FocusParameters()
return params
except Exception as e:
print('autofocus load parameter', e)
return FocusParameters()
else:
return FocusParameters()
def passive_focus(self, block=False, **kw):
self._evt_autofocusing = TEvent()
self._evt_autofocusing.clear()
# manager = self.laser_manager
oper = self.parameters.operator
self.info('passive focus. operator = {}'.format(oper))
g = self.graph
if not g:
g = Graph(plotcontainer_dict=dict(padding=10),
window_x=0.70,
window_y=20,
window_width=325,
window_height=325,
window_title='Autofocus')
self.graph = g
g.clear()
g.new_plot(padding=[40, 10, 10, 40],
xtitle='Z (mm)',
ytitle='Focus Measure ({})'.format(oper))
g.new_series()
g.new_series()
invoke_in_main_thread(self._open_graph)
target = self._passive_focus
self._passive_focus_thread = Thread(name='autofocus',
target=target,
args=(self._evt_autofocusing, ),
kwargs=kw)
self._passive_focus_thread.start()
if block:
# while 1:
# if not self._passive_focus_thread.isRunning():
# break
# time.sleep(0.25)
self._passive_focus_thread.join()
def _open_graph(self):
ui = self.graph.edit_traits()
self.add_window(ui)
def stop_focus(self):
if self.stage_controller:
self.stage_controller.stop()
self.info('autofocusing stopped by user')
def _passive_focus(self, stop_signal, set_zoom=True):
'''
sweep z looking for max focus measure
FMgrad= roberts or sobel (sobel removes noise)
FMvar = intensity variance
'''
self.autofocusing = True
manager = self.laser_manager
fstart = self.parameters.fstart
fend = self.parameters.fend
step_scalar = self.parameters.step_scalar
zoom = self.parameters.zoom
operator = self.parameters.operator
steps = step_scalar * (max(fend, fstart) - min(fend, fstart)) + 1
prev_zoom = None
if set_zoom and \
manager is not None and \
zoom:
motor = manager.get_motor('zoom')
if motor:
prev_zoom = motor.data_position
self.info('setting zoom: {}'.format(zoom))
manager.set_motor('zoom', zoom, block=True)
time.sleep(1.5)
args = self._do_focusing(fstart, fend, steps, operator)
if manager is not None:
if prev_zoom is not None:
self.info('returning to previous zoom: {}'.format(prev_zoom))
manager.set_motor('zoom', prev_zoom, block=True)
if args:
mi, fmi, ma, fma = args
self.info('''passive focus results:Operator={}
ImageGradmin={} (z={})
ImageGradmax={}, (z={})'''.format(operator, mi, fmi, ma, fma))
focus_pos = fma
self.graph.add_vertical_rule(focus_pos)
self.graph.redraw()
# self.graph.add_vertical_rule(fma)
self.info('calculated focus z= {}'.format(focus_pos))
# if set_z:
controller = self.stage_controller
if controller is not None:
if not stop_signal.isSet():
controller.single_axis_move('z', focus_pos, block=True)
controller._z_position = focus_pos
controller.z_progress = focus_pos
self.autofocusing = False
def _cancel_sweep(self, vo):
if self._evt_autofocusing.isSet():
# return to original velocity
self.autofocusing = False
self._reset_velocity(vo)
return True
def _reset_velocity(self, vo):
if self.stage_controller:
pdict = dict(velocity=vo, key='z')
self.stage_controller.set_single_axis_motion_parameters(
pdict=pdict)
def _do_focusing(self, start, end, steps, operator):
screen_roi = self._get_roi()
self._add_focus_area_rect(*screen_roi)
src = self._load_source()
src = asarray(src)
h, w, _d = src.shape
cx = w / 2.
cy = h / 2.
cw = self.parameters.crop_width
ch = self.parameters.crop_height
roi = cx, cy, cw, ch
'''
start the z in motion and take pictures as you go
query stage_controller to get current z
'''
self.info('focus sweep start={} end={}'.format(start, end))
# move to start position
controller = self.stage_controller
if controller:
vo = controller.axes['z'].velocity
if self._cancel_sweep(vo):
return
self.graph.set_x_limits(min(start, end), max(start, end), pad=2)
# sweep 1 and velocity 1
self._do_sweep(start,
end,
velocity=self.parameters.velocity_scalar1)
fms, focussteps = self._collect_focus_measures(operator, roi)
if not (fms and focussteps):
return
# reached end of sweep
# calculate a nominal focal point
args = self._calculate_nominal_focal_point(fms, focussteps)
if not args:
return
nfocal = args[3]
nwin = self.parameters.negative_window
pwin = self.parameters.positive_window
if self._cancel_sweep(vo):
return
nstart, nend = max(0, nfocal - nwin), nfocal + pwin
# mi = min(min(nstart, nend), min(start, end))
# ma = max(max(nstart, nend), max(start, end))
# self.graph.set_x_limits(mi, ma, pad=2)
time.sleep(1)
# do a slow tight sweep around the nominal focal point
self._do_sweep(nstart,
nend,
velocity=self.parameters.velocity_scalar2)
fms, focussteps = self._collect_focus_measures(operator,
roi,
series=1)
self._reset_velocity(vo)
else:
focussteps = linspace(0, 10, 11)
fms = -(focussteps - 5)**2 + 10 + random.random(11)
self.info('frames analyzed {}'.format(len(fms)))
# self.canvas.markupcontainer.pop('croprect')
return self._calculate_nominal_focal_point(fms, focussteps)
def _do_sweep(self, start, end, velocity=None):
controller = self.stage_controller
controller.single_axis_move('z', start, block=True)
# time.sleep(0.1)
# explicitly check for motion
# controller.block(axis='z')
if velocity:
vo = controller.axes['z'].velocity
controller.set_single_axis_motion_parameters(
pdict=dict(velocity=vo * velocity, key='z'))
self.info('starting sweep from {}'.format(controller.z_progress))
# pause before moving to end
time.sleep(0.25)
controller.single_axis_move('z', end, update=100, immediate=True)
def _collect_focus_measures(self, operator, roi, series=0):
controller = self.stage_controller
focussteps = []
fms = []
if controller.timer:
p = controller.timer.get_interval()
self.debug('controller timer period {}'.format(p))
pz = controller.z_progress
while 1:
src = self._load_source()
x = controller.z_progress
if x != pz:
y = self._calculate_focus_measure(src, operator, roi)
self.graph.add_datum((x, y), series=series)
focussteps.append(x)
fms.append(y)
pz = x
if not (controller.timer.isActive() and \
not self._evt_autofocusing.isSet()):
break
time.sleep(p)
self.debug('sweep finished')
return fms, focussteps
def _calculate_nominal_focal_point(self, fms, focussteps):
if fms:
sfms = smooth(fms)
if sfms is not None:
self.graph.new_series(focussteps, sfms)
self.graph.redraw()
fmi = focussteps[argmin(sfms)]
fma = focussteps[argmax(sfms)]
mi = min(sfms)
ma = max(sfms)
return mi, fmi, ma, fma
def _calculate_focus_measure(self, src, operator, roi):
'''
see
IMPLEMENTATION OF A PASSIVE AUTOMATIC FOCUSING ALGORITHM
FOR DIGITAL STILL CAMERA
DOI 10.1109/30.468047
and
http://cybertron.cg.tu-berlin.de/pdci10/frankencam/#autofocus
'''
# need to resize to 640,480. this is the space the roi is in
# s = resize(grayspace(pychron), 640, 480)
src = grayspace(src)
v = crop(src, *roi)
di = dict(var=lambda x: variance(x),
laplace=lambda x: get_focus_measure(x, 'laplace'),
sobel=lambda x: ndsum(
generic_gradient_magnitude(x, sobel, mode='nearest')))
func = di[operator]
return func(v)
def image_view(self):
v = View(
Item('image',
show_label=False,
editor=ImageEditor(),
width=640,
height=480,
style='custom'))
return v
def traits_view(self):
v = View(
HGroup(self._button_factory('autofocus_button', 'autofocus_label'),
Item('configure_button', show_label=False),
show_border=True,
label='Autofocus'))
return v
def configure_view(self):
v = View(Item('parameters', style='custom', show_label=False),
handler=ConfigureHandler,
buttons=['OK', 'Cancel'],
kind='livemodal',
title='Configure Autofocus',
x=0.80,
y=0.05)
return v
def _load_source(self):
src = self.video.get_frame()
return src
# if pychron:
# return Image.new_frame(pychron)
# self.image.load(pychron)
# return self.image.source_frame
def _get_roi(self):
w = self.parameters.crop_width
h = self.parameters.crop_height
cx, cy = self.canvas.get_center_rect_position(w, h)
# cw, ch = self.canvas.outer_bounds
# print w, h, cw, ch
# cx = cw / 2. - w / 2.
# cy = ch / 2. - h / 2.
# cx = (cw - w) / 2.
# cy = (ch - h) / 2.
# cx = (640 * self.canvas.scaling - w) / 2
# cy = (480 * self.canvas.scaling - h) / 2
roi = cx, cy, w, h
return roi
def _add_focus_area_rect(self, cx, cy, w, h):
# pl = self.canvas.padding_left
# pb = self.canvas.padding_bottom
self.canvas.remove_item('croprect')
self.canvas.add_markup_rect(cx, cy, w, h, identifier='croprect')
def _autofocus_button_fired(self):
if not self.autofocusing:
self.autofocusing = True
self.passive_focus()
else:
self.autofocusing = False
self._evt_autofocusing.set()
self.stop_focus()
def _configure_button_fired(self):
self._crop_rect_update()
self.edit_traits(view='configure_view', kind='livemodal')
self.canvas.remove_item('croprect')
# try:
# self.canvas.markupcontainer.pop('croprect')
# except KeyError:
# pass
@on_trait_change('parameters:[_crop_width,_crop_height]')
def _crop_rect_update(self):
roi = self._get_roi()
self._add_focus_area_rect(*roi)
def _get_autofocus_label(self):
return 'Autofocus' if not self.autofocusing else 'Stop'
def _parameters_default(self):
return self.load_parameter()
def _autofocusing_changed(self, new):
if not new:
self.canvas.remove_item('croprect')