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annotate_faces.py
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annotate_faces.py
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#!/usr/bin/env python
"""
Facial landmark annotation tool
This program expects either a single image as an argument, or a directory
with many images, and a number n of images to be processed in that directory.
In this last case, names are sorted, and images at positions 0, floor(N/n),
floor(2N/n), ... floor((n - 1)N/n) are selected.
Output is to stdout and follows a csv format:
'image_fname,' +
'leye_x,leye_y,reye_x,reye_y,nose_x,nose_y, ' +
'lmouth_x,lmouth_y,rmouth_x,rmouth_y,' +
'rect_top_x,rect_top_y,rect_width,rect_height'
It is not necessary to annotate all points, and images can be skipped when
in multiple image mode.
Run without arguments for usage information.
"""
from __future__ import print_function
from __future__ import division
import os
import argparse
import warnings
import cv2
from matplotlib import pyplot as plt
from matplotlib.widgets import Button
import matplotlib.cbook
warnings.filterwarnings('ignore', category=matplotlib.cbook.mplDeprecation)
def enum(**enums):
return type('Enum', (), enums)
class InteractiveViewer(object):
def __init__(self, img_path):
self.img_path = img_path
self.key_pressed = False
self.key_event = None
self.rect_clicked = False
self.rect_coords = [(0, 0), (0, 0)]
self.leye_coords = None
self.reye_coords = None
self.nose_coords = None
self.lmouth_coords = None
self.rmouth_coords = None
self.image = cv2.imread(img_path)
self.image = cv2.cvtColor(self.image, cv2.COLOR_BGR2RGB)
self.clone = self.image.copy()
self.fig = None
self.im_ax = None
self.button_rect = None
self.button_leye = None
self.button_reye = None
self.button_nose = None
self.button_lmouth = None
self.button_rmouth = None
self.button_done = None
self.button_skip = None
self.is_finished = False
self.is_skipped = False
self.States = enum(GET_RECT=1,
GET_LEYE=2,
GET_REYE=3,
GET_NOSE=4,
GET_LMOUTH=5,
GET_RMOUTH=6)
self.curr_state = self.States.GET_RECT
def redraw_annotations(self):
self.image = self.clone.copy()
cv2.rectangle(self.image, self.rect_coords[0], self.rect_coords[1],
(0, 255, 0), 5)
if self.leye_coords is not None:
cv2.circle(self.image, self.leye_coords, 5, (255, 0, 0), -1)
if self.reye_coords is not None:
cv2.circle(self.image, self.reye_coords, 5, (255, 0, 0), -1)
if self.nose_coords is not None:
cv2.circle(self.image, self.nose_coords, 5, (255, 0, 0), -1)
if self.lmouth_coords is not None:
cv2.circle(self.image, self.lmouth_coords, 5, (255, 0, 0), -1)
if self.rmouth_coords is not None:
cv2.circle(self.image, self.rmouth_coords, 5, (255, 0, 0), -1)
self.im_ax.imshow(self.image)
def update_button_labels(self):
self.button_rect.label.set_text('Rectangle\n({},{})'.format(
self.rect_coords[0], self.rect_coords[1]))
self.button_leye.label.set_text(
'Left Eye\n{}'.format(self.leye_coords))
self.button_reye.label.set_text(
'Right Eye\n{}'.format(self.reye_coords))
self.button_nose.label.set_text(
'Nose\n{}'.format(self.nose_coords))
self.button_lmouth.label.set_text(
'Left Mouth\n{}'.format(self.lmouth_coords))
self.button_rmouth.label.set_text(
'Right Mouth \n{}'.format(self.rmouth_coords))
def on_click(self, event):
if event.inaxes != self.im_ax:
return
self.rect_clicked = False
if self.curr_state == self.States.GET_RECT:
self.rect_coords[0] = (int(event.xdata), int(event.ydata))
self.rect_clicked = True
elif self.curr_state == self.States.GET_LEYE:
self.leye_coords = (int(event.xdata), int(event.ydata))
self.button_leye.label.set_text(
'Left Eye\n{}'.format(self.leye_coords))
self.redraw_annotations()
elif self.curr_state == self.States.GET_REYE:
self.reye_coords = (int(event.xdata), int(event.ydata))
self.reye_coords = (int(event.xdata), int(event.ydata))
self.button_reye.label.set_text(
'Right Eye\n{}'.format(self.reye_coords))
self.redraw_annotations()
elif self.curr_state == self.States.GET_NOSE:
self.nose_coords = (int(event.xdata), int(event.ydata))
self.nose_coords = (int(event.xdata), int(event.ydata))
self.button_nose.label.set_text(
'Nose\n{}'.format(self.nose_coords))
self.redraw_annotations()
elif self.curr_state == self.States.GET_LMOUTH:
self.lmouth_coords = (int(event.xdata), int(event.ydata))
self.lmouth_coords = (int(event.xdata), int(event.ydata))
self.button_lmouth.label.set_text(
'Left Mouth\n{}'.format(self.lmouth_coords))
self.redraw_annotations()
elif self.curr_state == self.States.GET_RMOUTH:
self.rmouth_coords = (int(event.xdata), int(event.ydata))
self.rmouth_coords = (int(event.xdata), int(event.ydata))
self.button_rmouth.label.set_text(
'Right Mouth\n{}'.format(self.rmouth_coords))
self.redraw_annotations()
def on_release(self, event):
if event.inaxes != self.im_ax:
return
self.rect_clicked = False
if self.curr_state == self.States.GET_RECT:
self.rect_coords[1] = (int(event.xdata), int(event.ydata))
cv2.rectangle(self.image, self.rect_coords[0], self.rect_coords[1],
(0, 255, 0), 5)
self.button_rect.label.set_text('Rectangle\n({},{})'.format(
self.rect_coords[0], self.rect_coords[1]))
self.im_ax.imshow(self.image)
def on_key_press(self, event):
self.key_event = event
self.key_pressed = True
def on_mouse_move(self, event):
if not self.rect_clicked or event.inaxes != self.im_ax:
return
self.rect_coords[1] = (int(event.xdata), int(event.ydata))
self.redraw_annotations()
def connect(self):
self.fig.canvas.mpl_connect('button_press_event', self.on_click)
self.fig.canvas.mpl_connect('button_release_event', self.on_release)
self.fig.canvas.mpl_connect('key_press_event', self.on_key_press)
self.fig.canvas.mpl_connect('motion_notify_event', self.on_mouse_move)
def button_event(self, event):
self.key_pressed = False
if event.inaxes == self.button_rect.ax:
self.rect_coords = [(0, 0), (0, 0)]
self.curr_state = self.States.GET_RECT
elif event.inaxes == self.button_leye.ax:
self.leye_coords = None
self.curr_state = self.States.GET_LEYE
elif event.inaxes == self.button_reye.ax:
self.reye_coords = None
self.curr_state = self.States.GET_REYE
elif event.inaxes == self.button_nose.ax:
self.nose_coords = None
self.curr_state = self.States.GET_NOSE
elif event.inaxes == self.button_lmouth.ax:
self.lmouth_coords = None
self.curr_state = self.States.GET_LMOUTH
elif event.inaxes == self.button_rmouth.ax:
self.rmouth_coords = None
self.curr_state = self.States.GET_RMOUTH
elif event.inaxes == self.button_done.ax:
self.is_finished = True
elif event.inaxes == self.button_skip.ax:
self.is_skipped = True
self.redraw_annotations()
self.update_button_labels()
def init_subplots(self):
self.fig = plt.figure(os.path.basename(self.img_path))
self.im_ax = self.fig.add_subplot(1, 2, 1)
self.im_ax.set_title('Input')
self.im_ax.imshow(self.image, interpolation='nearest')
self.button_rect = Button(plt.axes([0.5, 0.8, 0.45, 0.09]),
'Rectangle ()')
self.button_rect.on_clicked(self.button_event)
self.button_leye = Button(plt.axes([0.5, 0.7, 0.45, 0.09]),
'Left eye ()')
self.button_leye.on_clicked(self.button_event)
self.button_reye = Button(plt.axes([0.5, 0.6, 0.45, 0.09]),
'Right eye ()')
self.button_reye.on_clicked(self.button_event)
self.button_nose = Button(plt.axes([0.5, 0.5, 0.45, 0.09]),
'Nose ()')
self.button_nose.on_clicked(self.button_event)
self.button_lmouth = Button(plt.axes([0.5, 0.4, 0.45, 0.09]),
'Left mouth ()')
self.button_lmouth.on_clicked(self.button_event)
self.button_rmouth = Button(plt.axes([0.5, 0.3, 0.45, 0.09]),
'Right mouth ()')
self.button_rmouth.on_clicked(self.button_event)
self.button_done = Button(plt.axes([0.5, 0.15, 0.45, 0.05]),
'Done')
self.button_done.on_clicked(self.button_event)
self.button_skip = Button(plt.axes([0.5, 0.09, 0.45, 0.05]),
'Skip')
self.button_skip.on_clicked(self.button_event)
self.update_button_labels()
def fill_default_coords(self):
if self.leye_coords is None:
self.leye_coords = (-1, -1)
if self.reye_coords is None:
self.reye_coords = (-1, -1)
if self.nose_coords is None:
self.nose_coords = (-1, -1)
if self.lmouth_coords is None:
self.lmouth_coords = (-1, -1)
if self.rmouth_coords is None:
self.rmouth_coords = (-1, -1)
def save_annotations(self):
self.fill_default_coords()
f_winner.write('{0}\t{1}\t{2}\t{3}\t{4}\t{5}\t{6}\t{7}\t{8}\t{9}\t{10}\n'.format(
self.img_path,
self.leye_coords[0], self.leye_coords[1],
self.reye_coords[0], self.reye_coords[1],
self.nose_coords[0], self.nose_coords[1],
self.lmouth_coords[0], self.lmouth_coords[1],
self.rmouth_coords[0], self.rmouth_coords[1]))
print('{0},{1},{2},{3},{4},{5},{6},{7},{8}'
',{9},{10},{11},{12},{13},{14}'.format(
os.path.basename(self.img_path),
self.leye_coords[0], self.leye_coords[1],
self.reye_coords[0], self.reye_coords[1],
self.nose_coords[0], self.nose_coords[1],
self.lmouth_coords[0], self.lmouth_coords[1],
self.rmouth_coords[0], self.rmouth_coords[1],
self.rect_coords[0][0], self.rect_coords[0][1],
self.rect_coords[1][0] -
self.rect_coords[0][0] + 1,
self.rect_coords[1][1] -
self.rect_coords[0][1] + 1))
def run(self):
self.init_subplots()
self.connect()
while True:
# Wait for output, and 'update' figure
plt.pause(0.03)
# Exit
if (self.is_finished
or (self.key_pressed and self.key_event.key == 'q')
or self.is_skipped):
break
plt.close()
if self.is_finished:
self.save_annotations()
return 0 # finished normally
elif self.is_skipped:
return 0
else:
return 1 # aborted (pressed 'q')
def parse_arguments():
parser = argparse.ArgumentParser(
description='Annotate one or more face images. Output to stdout.')
base_group = parser.add_mutually_exclusive_group()
base_group.add_argument('-d', '--dirimgs', type=str,
help='dir with images')
base_group.add_argument('-i', '--img', type=str,
help='single image')
parser.add_argument('-n', '--nimgs', type=int,
help='number of images for -d mode', default=1)
args = parser.parse_args()
if args.dirimgs is None and args.img is None:
parser.print_help()
return args
def main(args):
if args.dirimgs is not None:
flist = sorted(os.listdir(args.dirimgs))
print('image_fname,leye_x,leye_y,reye_x,reye_y,nose_x,nose_y,'
'lmouth_x,lmouth_y,rmouth_x,rmouth_y,'
'rect_top_x,rect_top_y,rect_width,rect_height')
for curr_file in flist:#[::len(flist) // args.nimgs][:args.nimgs]:
img_path = os.path.join(args.dirimgs, curr_file)
viewer = InteractiveViewer(img_path)
if viewer.run() == 1:
#print('break at 366')
break
else:
#print('continue at 369')
continue
elif args.img is not None:
print('image_fname,leye_x,leye_y,reye_x,reye_y,nose_x,nose_y,'
'lmouth_x,lmouth_y,rmouth_x,rmouth_y,'
'rect_top_x,rect_top_y,rect_width,rect_height')
img_path = args.img
viewer = InteractiveViewer(img_path)
viewer.run()
if __name__ == '__main__':
f_winner = open('landmark_output.txt', 'a')
main(parse_arguments())
f_winner.close()