Contour.py
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import sys
import cv2
import numpy as np
def FindContours(img):
imgray = cv2.cvtColor(img,cv2.COLOR_BGR2GRAY)
#cv2.imshow("Gray", imgray)
ret,thresh = cv2.threshold(imgray,127,255,0)
#cv2.imshow("threshold", thresh)
_,contours,hierarchy = cv2.findContours(thresh, 1, 2)
return contours
def FindCenterofMass(contours):
liste = []
area = []
centerMass = []
for i in range (0,len(contours)):
cnt = contours[i]
#print cnt
M = cv2.moments(cnt)
area.append(cv2.contourArea(cnt))
tmp = cv2.contourArea(cnt)
if (M['m00'] != 0) and (tmp > 1000):
cx = int(M['m10']/M['m00'])
cy = int(M['m01']/M['m00'])
centerMass.append((cx,cy))
else:
liste.append(i)
return liste, area, centerMass
def CleanContours(img):
contours = FindContours(img)
liste, _, _ = FindCenterofMass(contours)
for j in range (0,len(liste)):
a = liste[j]
if (a < len(contours)):
contours.pop(a)
return contours
def DrawBoundingBox(img):
contours = FindContours(img)
for cnt in contours:
x,y,w,h = cv2.boundingRect(cnt)
img = cv2.rectangle(img,(x,y),(x+w,y+h),(0,255,0),2)
cv2.imshow('Bounding Box', img)
return img
def DrawEnclosingCircle(img):
contours = FindContours(img)
for cnt in contours:
(x,y),radius = cv2.minEnclosingCircle(cnt)
center = (int(x),int(y))
radius = int(radius)
img = cv2.circle(img,center,radius,(0,255,0),2)
cv2.imshow('Enclosing Circle', img)
return img
def DrawContours(img, contours, titre):
img = cv2.drawContours(img, contours, -1, (0,255,0), 3)
cv2.imshow(titre, img)
return img
def DrawCenterofMass(img):
contours = FindContours(img)
_, _, centerMass = FindCenterofMass(contours)
for x, y in centerMass:
img=cv2.circle(img, (x,y), 10, (124,255,255), 1)
cv2.imshow('Center of Mass', img)
return img
def DrawArea(img):
contours = CleanContours(img)
img = cv2.drawContours(img, contours, -1, (255, 0, 0), cv2.FILLED)
cv2.imshow('Area', img)
return img
def ContourChoiceProcessing(img, choice):
if choice == '1':
contours = FindContours(img)
img = DrawContours(img, contours, 'Contours')
return img
elif choice == '2':
contours = CleanContours(img)
img = DrawContours(img, contours, 'Clean Contours')
return img
elif choice == '3':
img = DrawCenterofMass(img)
return img
elif choice == '4':
img = DrawArea(img)
return img
elif choice == '5':
img = ContourChoiceProcessing(img, '2')
img = DrawCenterofMass(img)
return img
elif choice == '6':
img = DrawArea(img)
img = DrawCenterofMass(img)
return img
elif choice == '7':
img = DrawBoundingBox(img)
return img
elif choice == '8':
img = DrawEnclosingCircle(img)
return img
else:
return
def ContourChoice():
image = None
img = None
print('\t\tContours Features Menu\n')
while (image is None):
if sys.version_info >= (3, 0):
image = str(input('\tImage to use ? By default couleur.png \n'))
else:
image = str(raw_input('\tImage to use ? By default couleur.png \n'))
if not image:
image = 'couleur.png'
image = cv2.imread(str(image))
print ('\t1. Contours\n\t2. Clean Contours\n\t3. Center of Mass\n\t4. Area\n\t5. Contours + Center of Mass\n\t6. Area + Center of Mass\n\t7. Bounding Box\n\t8. Enclosing Circle\n')
if sys.version_info >= (3, 0):
choix = input('\n\tMultiple choices possible\n')
else :
choix = raw_input('\n\tMultiple choices possible\n')
for i in range (0, len(choix)):
img = image.copy()
img = ContourChoiceProcessing(img, choix[i])
if img is not None:
cv2.waitKey(0)
cv2.destroyAllWindows()
return