Midpoint on my line is wrong

NirvanaDon
1 ●2 ●3

berak
32993 ●7 ●81 ●312

Hey guys, i'm trying to get the midpoint of my line using this code but it seems wrong. Can anyone advice me please?

M = cv2.moments(ske)

centroid_x = int(M['m10']/M['m00'])

centroid_y = int(M['m01']/M['m00'])

cv2.circle(ske,(centroid_x,centroid_y), 5, (127,0,0), -1)

image description

Comments

why do you think, this is the wrong result ?

berak ( 2018-01-02 02:36:53 -0600 )edit

hey, i tried reducing the circle to radius 1 but it shows that my midpoint is above the white pixel line

NirvanaDon ( 2018-01-02 06:54:50 -0600 )edit

the center of mass of a line (that's what you calculate) is not nessecarily on the line (think of an U or an O)

(mass center != midpoint)

berak ( 2018-01-02 07:13:23 -0600 )edit

Is there another way i can find midpoint of the line? please advice

NirvanaDon ( 2018-01-02 07:49:39 -0600 )edit

Comments

i tried to use trackgoodfeature like the guy did. but there are many corners in my white pixel image because of the gap

NirvanaDon ( 2018-01-03 00:34:20 -0600 )edit