所以我想做的是使用霍夫变换在图像上找到线条,然后将线条绘制到图像中。
但我收到一条错误消息:
Traceback (most recent call last):
File "houghLines.py", line 31, in <module>
main() File "houghLines.py", line 13, in main
a = hough(image)
File "houghLines.py", line 29, in hough
(0,0,255))
TypeError: only length-1 arrays can be converted to Python scalars
这是我的代码:
import cv2
import os
import math
def main():
directory = os.path.dirname(__file__)
picLoc = os.path.join(directory, "../video-image/1m50s.png")
image = cv2.imread(picLoc)
print "sending image to houghLines.py"
a = hough(image)
cv2.imshow("", a)
cv2.waitKey(0)
cv2.destroyAllChildren()
def hough(image):
canny = cv2.Canny(image, 50, 200)
color_image = cv2.cvtColor(canny, cv2.COLOR_GRAY2BGR)
houghLines = cv2.HoughLinesP(canny, 1, math.pi/180, 50)
for x in range(len(houghLines)):
print x
pt1 = (houghLines[x][0], houghLines[x][1])
pt2 = (houghLines[x][2], houghLines[x][3])
cv2.line(color_image, pt1, pt2, (0,0,255), 3)
return color_image
main()