Opencv how to fill a polyline


Opencv how to fill a polyline



the python code given below draws a triangle, how can I fill inside? Or other easier way to draw a triangle in OpenCV?


pts = np.array([[100,350],[165,350],[165,240]], np.int32)
cv2.polylines(img,[pts],True,(0,255,255),2)




1 Answer
1



You have to use cv2.fillPoly().


cv2.fillPoly()



Change the second line to:


cv2.fillPoly(img, [pts], 255)



Illustration:


img = np.zeros([400, 400],dtype=np.uint8)
pts = np.array([[100,350],[165,350],[165,240]], np.int32)
cv2.fillPoly(img, [pts], 255)
cv2.imshow('Original', img)



Result:



enter image description here






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