mirror of
https://github.com/opencv/opencv.git
synced 2024-11-28 05:06:29 +08:00
65 lines
1.8 KiB
Python
65 lines
1.8 KiB
Python
import numpy as np
|
|
import cv2
|
|
|
|
help_message = '''USAGE: floodfill.py [<image>]
|
|
|
|
Click on the image to set seed point
|
|
|
|
Keys:
|
|
f - toggle floating range
|
|
c - toggle 4/8 connectivity
|
|
ESC - exit
|
|
'''
|
|
|
|
if __name__ == '__main__':
|
|
import sys
|
|
try: fn = sys.argv[1]
|
|
except: fn = '../cpp/fruits.jpg'
|
|
print help_message
|
|
|
|
img = cv2.imread(fn, True)
|
|
h, w = img.shape[:2]
|
|
mask = np.zeros((h+2, w+2), np.uint8)
|
|
seed_pt = None
|
|
fixed_range = True
|
|
connectivity = 4
|
|
|
|
def update(dummy=None):
|
|
if seed_pt is None:
|
|
cv2.imshow('floodfill', img)
|
|
return
|
|
flooded = img.copy()
|
|
mask[:] = 0
|
|
lo = cv2.getTrackbarPos('lo', 'floodfill')
|
|
hi = cv2.getTrackbarPos('hi', 'floodfill')
|
|
flags = connectivity
|
|
if fixed_range:
|
|
flags |= cv2.FLOODFILL_FIXED_RANGE
|
|
cv2.floodFill(flooded, mask, seed_pt, (255, 255, 255), (lo,)*3, (hi,)*3, flags)
|
|
cv2.circle(flooded, seed_pt, 2, (0, 0, 255), -1)
|
|
cv2.imshow('floodfill', flooded)
|
|
|
|
def onmouse(event, x, y, flags, param):
|
|
global seed_pt
|
|
if flags & cv2.EVENT_FLAG_LBUTTON:
|
|
seed_pt = x, y
|
|
update()
|
|
|
|
update()
|
|
cv2.setMouseCallback('floodfill', onmouse)
|
|
cv2.createTrackbar('lo', 'floodfill', 20, 255, update)
|
|
cv2.createTrackbar('hi', 'floodfill', 20, 255, update)
|
|
|
|
while True:
|
|
ch = cv2.waitKey()
|
|
if ch == 27:
|
|
break
|
|
if ch == ord('f'):
|
|
fixed_range = not fixed_range
|
|
print 'using %s range' % ('floating', 'fixed')[fixed_range]
|
|
update()
|
|
if ch == ord('c'):
|
|
connectivity = 12-connectivity
|
|
print 'connectivity =', connectivity
|
|
update()
|