how to find two blob center point difference

Answer 1

[Tesfaye Girma]

i think you can use this code

convert image to grayscale image

gray_image = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)

convert the grayscale image to binary image

ret,thresh = cv2.threshold(gray_image,127,255,0)

calculate moments of binary image

M = cv2.moments(thresh)

calculate x,y coordinate of center

cX = int(M["m10"] / M["m00"])

cY = int(M["m01"] / M["m00"])

put text and highlight the center

cv2.circle(img, (cX, cY), 5, (255, 255, 255), -1)

cv2.putText(img, "centroid", (cX - 25, cY - 25),cv2.FONT_HERSHEY_SIMPLEX, 0.5, (255, 255, 255), 2)

display the image

cv2.imshow("Image", img)

cv2.waitKey(0)