擅长:python、mysql、java
<pre><code>def draw_grid(img, line_color=(0, 255, 0), thickness=1, type_=_cv2.LINE_AA, pxstep=50):
'''(ndarray, 3-tuple, int, int) -> void
draw gridlines on img
line_color:
BGR representation of colour
thickness:
line thickness
type:
8, 4 or cv2.LINE_AA
pxstep:
grid line frequency in pixels
'''
x = pxstep
y = pxstep
while x < img.shape[1]:
_cv2.line(img, (x, 0), (x, img.shape[0]), color=line_color, lineType=type_, thickness=thickness)
x += pxstep
while y < img.shape[0]:
_cv2.line(img, (0, y), (img.shape[1], y), color=line_color, lineType=type_, thickness=thickness)
y += pxstep
</code></pre>