mirror of https://github.com/opencv/opencv.git
Open Source Computer Vision Library
https://opencv.org/
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
71 lines
1.8 KiB
71 lines
1.8 KiB
#/usr/bin/env python |
|
|
|
''' |
|
Floodfill sample. |
|
|
|
Usage: |
|
floodfill.py [<image>] |
|
|
|
Click on the image to set seed point |
|
|
|
Keys: |
|
f - toggle floating range |
|
c - toggle 4/8 connectivity |
|
ESC - exit |
|
''' |
|
|
|
import numpy as np |
|
import cv2 |
|
|
|
if __name__ == '__main__': |
|
import sys |
|
try: fn = sys.argv[1] |
|
except: fn = '../cpp/fruits.jpg' |
|
print __doc__ |
|
|
|
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 = 0xFF & 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() |
|
cv2.destroyAllWindows()
|
|
|