From b92bee11394d09e1af1e6fd9f1db745edabfd444 Mon Sep 17 00:00:00 2001
From: rainfly <xiechc@gmail.com>
Date: Sun, 3 Dec 2017 10:36:27 +0800
Subject: [PATCH] =?UTF-8?q?Create=20=E8=8A=B1=E5=9E=8B=E5=A1=AB=E8=89=B2?=
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---
 ...2\261\345\236\213\345\241\253\350\211\262" | 90 +++++++++++++++++++
 1 file changed, 90 insertions(+)
 create mode 100644 "\350\212\261\345\236\213\345\241\253\350\211\262"

diff --git "a/\350\212\261\345\236\213\345\241\253\350\211\262" "b/\350\212\261\345\236\213\345\241\253\350\211\262"
new file mode 100644
index 00000000..832d0a54
--- /dev/null
+++ "b/\350\212\261\345\236\213\345\241\253\350\211\262"
@@ -0,0 +1,90 @@
+#!/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
+'''
+
+# Python 2/3 compatibility
+from __future__ import print_function
+
+import numpy as np
+import cv2
+import time
+
+if __name__ == '__main__':
+    import sys
+    try:
+        fn = sys.argv[1]
+    except:
+        fn = 'flower.jpg'
+    print(__doc__)
+
+    img = cv2.imread(fn, True)
+    if img is None:
+        print('Failed to load image file:', fn)
+        sys.exit(1)
+
+    h, w = img.shape[:2]
+    mask = np.zeros((h+2, w+2), np.uint8)
+    seed_pt = None
+    fixed_range = True
+    connectivity = 8
+
+    
+    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, 0, 0), (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', 40, 255, update)
+    gray = cv2.cvtColor(img,cv2.COLOR_BGR2GRAY)  
+    g=cv2.GaussianBlur(gray,(3,3),0);  
+    canny = cv2.Canny(g,30,100); 
+    contours, hierarchy = cv2.findContours(canny,cv2.RETR_EXTERNAL,cv2.CHAIN_APPROX_NONE)  
+    cv2.drawContours(img,contours,-1,(0,0,0),1)  
+    #cv2.imshow('floodfill', img)
+
+    while True:
+        ch = cv2.waitKey()
+        if ch == 27:
+            break
+        if ch == ord('s'):
+            temp = img.copy()
+            cv2.drawContours(temp,contours,-1,(0,0,255),3)  
+            cv2.imshow('flofill', temp)
+        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()