On 2016-09-17 01:20, meInvent bbird wrote:
i succeed to use code to draw green line, but green line not draw the
large area, expect second uploaded picture, the blue line connect
the bottom of red line graph
[snip]
Here's the code with the commented code and print statements removed and
the indentation fixed:
im = img.copy()
for cnt in contours:
hull = cv2.convexHull(cnt, returnPoints=True)
previousx = 0
previousy = 0
for c in hull:
if previousx != 0 and previousy != 0 and c[0][0] != 0 and
c[0][1] != 0 and abs(previousy - c[0][1]) > 10 and abs(c[0][0] -
previousx) > 1:
cv2.line(im, (previousx, previousy), (c[0][0], c[0][1]),
(0, 255, 0), 2)
previousx = c[0][0]
previousy = c[0][1]
https://drive.google.com/file/d/0Bxs_ao6uuBDUWVBFZzVIVGotRlk/view?usp=sharing
expected is
https://drive.google.com/file/d/0Bxs_ao6uuBDUNGZFS2F3WnJERzA/view?usp=sharing
I think the problem might be that you're setting previousx to c[0][0]
and previousy to c[0][1] even if you don't draw the line (because of the
indentation), so you get a series of unconnected lines.
I'm not sure whether you should be setting previousx and previousy to 0
each time around the outer loop. I can't test it, but if the previous
fix doesn't work, it's one more thing to try.
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