Extract top part of opencv contour
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I am able to find the contour of region of interest but I can't find a way to separate the top from the bottom part of the contour. I tried filtering the y points based on the cy moment but no luck with that
img = cv2.imread(image_path)
img = cv2.cvtColor(img, cv2.COLOR_RGB2GRAY)
blur = cv2.GaussianBlur(img, (1, 1), 1000)
flag, thresh = cv2.threshold(blur, 120, 255, cv2.THRESH_BINARY)
im2, contours, hierarchy = cv2.findContours(thresh, cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_SIMPLE)
contours = sorted(contours, key=cv2.contourArea, reverse=True)[:1]
perimeters = [cv2.arcLength(contours[i],True) for i in range(len(contours))]
listindex=[i for i in range(1) if perimeters[i]>perimeters[0]/2]
num_of_layers = len(listindex)
imgcont = img.copy()
[cv2.drawContours(imgcont, [contours[i]], 0, (0,255,0), 5) for i in listindex]
M = cv2.moments(contours[0])
cx = int(M['m10']/M['m00'])
cy = int(M['m01']/M['m00'])
plt.plot(cx,cy)
plt.imshow(imgcont, cmap='gray')
python opencv contour
asked Nov 10 at 20:02
laza
500722
add a comment |
up vote
0
down vote
favorite
I am able to find the contour of region of interest but I can't find a way to separate the top from the bottom part of the contour. I tried filtering the y points based on the cy moment but no luck with that
img = cv2.imread(image_path)
img = cv2.cvtColor(img, cv2.COLOR_RGB2GRAY)
blur = cv2.GaussianBlur(img, (1, 1), 1000)
flag, thresh = cv2.threshold(blur, 120, 255, cv2.THRESH_BINARY)
im2, contours, hierarchy = cv2.findContours(thresh, cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_SIMPLE)
contours = sorted(contours, key=cv2.contourArea, reverse=True)[:1]
perimeters = [cv2.arcLength(contours[i],True) for i in range(len(contours))]
listindex=[i for i in range(1) if perimeters[i]>perimeters[0]/2]
num_of_layers = len(listindex)
imgcont = img.copy()
[cv2.drawContours(imgcont, [contours[i]], 0, (0,255,0), 5) for i in listindex]
M = cv2.moments(contours[0])
cx = int(M['m10']/M['m00'])
cy = int(M['m01']/M['m00'])
plt.plot(cx,cy)
plt.imshow(imgcont, cmap='gray')
python opencv contour
asked Nov 10 at 20:02
laza
500722
add a comment |
up vote
0
down vote
favorite
up vote
0
down vote
favorite
I am able to find the contour of region of interest but I can't find a way to separate the top from the bottom part of the contour. I tried filtering the y points based on the cy moment but no luck with that
img = cv2.imread(image_path)
img = cv2.cvtColor(img, cv2.COLOR_RGB2GRAY)
blur = cv2.GaussianBlur(img, (1, 1), 1000)
flag, thresh = cv2.threshold(blur, 120, 255, cv2.THRESH_BINARY)
im2, contours, hierarchy = cv2.findContours(thresh, cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_SIMPLE)
contours = sorted(contours, key=cv2.contourArea, reverse=True)[:1]
perimeters = [cv2.arcLength(contours[i],True) for i in range(len(contours))]
listindex=[i for i in range(1) if perimeters[i]>perimeters[0]/2]
num_of_layers = len(listindex)
imgcont = img.copy()
[cv2.drawContours(imgcont, [contours[i]], 0, (0,255,0), 5) for i in listindex]
M = cv2.moments(contours[0])
cx = int(M['m10']/M['m00'])
cy = int(M['m01']/M['m00'])
plt.plot(cx,cy)
plt.imshow(imgcont, cmap='gray')
python opencv contour
asked Nov 10 at 20:02
laza
500722
I am able to find the contour of region of interest but I can't find a way to separate the top from the bottom part of the contour. I tried filtering the y points based on the cy moment but no luck with that
img = cv2.imread(image_path)
img = cv2.cvtColor(img, cv2.COLOR_RGB2GRAY)
blur = cv2.GaussianBlur(img, (1, 1), 1000)
flag, thresh = cv2.threshold(blur, 120, 255, cv2.THRESH_BINARY)
im2, contours, hierarchy = cv2.findContours(thresh, cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_SIMPLE)
contours = sorted(contours, key=cv2.contourArea, reverse=True)[:1]
perimeters = [cv2.arcLength(contours[i],True) for i in range(len(contours))]
listindex=[i for i in range(1) if perimeters[i]>perimeters[0]/2]
num_of_layers = len(listindex)
imgcont = img.copy()
[cv2.drawContours(imgcont, [contours[i]], 0, (0,255,0), 5) for i in listindex]
M = cv2.moments(contours[0])
cx = int(M['m10']/M['m00'])
cy = int(M['m01']/M['m00'])
plt.plot(cx,cy)
plt.imshow(imgcont, cmap='gray')
python opencv contour
python opencv contour
asked Nov 10 at 20:02
laza
500722
asked Nov 10 at 20:02
laza
500722
asked Nov 10 at 20:02
laza
500722
asked Nov 10 at 20:02
laza
500722
asked Nov 10 at 20:02
laza
500722
500722
add a comment |
add a comment |
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