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python: 'cv2.' -> 'cv.' via 'import cv2 as cv'

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This commit is contained in:
Alexander Alekhin
2017-12-11 12:55:03 +03:00
parent 9665dde678
commit 5560db73bf
162 changed files with 2083 additions and 2084 deletions
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samples/python/squares.py
+15 -15
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@@ -14,7 +14,7 @@ if PY3:
xrange = range
import numpy as np
import cv2
import cv2 as cv
def angle_cos(p0, p1, p2):
@@ -22,20 +22,20 @@ def angle_cos(p0, p1, p2):
return abs( np.dot(d1, d2) / np.sqrt( np.dot(d1, d1)*np.dot(d2, d2) ) )
def find_squares(img):
img = cv2.GaussianBlur(img, (5, 5), 0)
img = cv.GaussianBlur(img, (5, 5), 0)
squares = []
for gray in cv2.split(img):
for gray in cv.split(img):
for thrs in xrange(0, 255, 26):
if thrs == 0:
bin = cv2.Canny(gray, 0, 50, apertureSize=5)
bin = cv2.dilate(bin, None)
bin = cv.Canny(gray, 0, 50, apertureSize=5)
bin = cv.dilate(bin, None)
else:
_retval, bin = cv2.threshold(gray, thrs, 255, cv2.THRESH_BINARY)
bin, contours, _hierarchy = cv2.findContours(bin, cv2.RETR_LIST, cv2.CHAIN_APPROX_SIMPLE)
_retval, bin = cv.threshold(gray, thrs, 255, cv.THRESH_BINARY)
bin, contours, _hierarchy = cv.findContours(bin, cv.RETR_LIST, cv.CHAIN_APPROX_SIMPLE)
for cnt in contours:
cnt_len = cv2.arcLength(cnt, True)
cnt = cv2.approxPolyDP(cnt, 0.02*cnt_len, True)
if len(cnt) == 4 and cv2.contourArea(cnt) > 1000 and cv2.isContourConvex(cnt):
cnt_len = cv.arcLength(cnt, True)
cnt = cv.approxPolyDP(cnt, 0.02*cnt_len, True)
if len(cnt) == 4 and cv.contourArea(cnt) > 1000 and cv.isContourConvex(cnt):
cnt = cnt.reshape(-1, 2)
max_cos = np.max([angle_cos( cnt[i], cnt[(i+1) % 4], cnt[(i+2) % 4] ) for i in xrange(4)])
if max_cos < 0.1:
@@ -45,11 +45,11 @@ def find_squares(img):
if __name__ == '__main__':
from glob import glob
for fn in glob('../data/pic*.png'):
img = cv2.imread(fn)
img = cv.imread(fn)
squares = find_squares(img)
cv2.drawContours( img, squares, -1, (0, 255, 0), 3 )
cv2.imshow('squares', img)
ch = cv2.waitKey()
cv.drawContours( img, squares, -1, (0, 255, 0), 3 )
cv.imshow('squares', img)
ch = cv.waitKey()
if ch == 27:
break
cv2.destroyAllWindows()
cv.destroyAllWindows()