Hi , I am still beginner in opencv and I have this task :
find the distance between the centers of two green boxes using camera.
I could be able to find the centers of the boxes but how to find the distance between their centers ?
below is my code
really appreciate your help.
Many thanks.
import numpy as np
import cv2
import imutils
cap = cv2.VideoCapture(1)
while(1):
#read frame and convert the color scheme of the frame BGR to HSV
_, image = cap.read()
image = imutils.resize(image, width=600)
hsv = cv2.cvtColor(image, cv2.COLOR_BGR2HSV)
#Our operations on the frame come here
lower_pink = np.array([38, 50, 50])
upper_pink = np.array([75, 255, 255])
#Our frame, the HSV image, is thresholded among upper and lower pixel ranges to get only green colors
mask = cv2.inRange(hsv, lower_pink, upper_pink)
kernel = np.ones((5,5),'int')
dilated = cv2.dilate(mask,kernel)
res = cv2.bitwise_and(image,image, mask=mask)
# Then we thresholded the masked image and get the contours.
ret,thresh = cv2.threshold(cv2.cvtColor(res,cv2.COLOR_BGR2GRAY),3,255,cv2.THRESH_BINARY)
# find contours in the thresholded image
cnts = cv2.findContours(mask.copy(), cv2.RETR_EXTERNAL,
cv2.CHAIN_APPROX_SIMPLE)
cnts = cnts[0] if imutils.is_cv2() else cnts[1]
# loop over the contours
for c in cnts:
# compute the center of the contour
area=cv2.contourArea(c)
M = cv2.moments(c)
if M["m00"] >1000:
cX = int(M["m10"] / M["m00"])
cY = int(M["m01"] / M["m00"])
# draw the contour and center of the shape on the image
cv2.drawContours(mask, [c], -1, (0, 255, 0), 2)
cv2.circle(mask, (cX, cY), 7, (0, 255, 255), -1)
cv2.putText(mask, "center", (cX - 20, cY - 20),
cv2.FONT_HERSHEY_SIMPLEX, 0.5, (0, 255, 255), 2)
cv2.imshow('frame',mask)
k = cv2.waitKey(5) & 0xFF
if k == 27:
break
cap.release()
cv2.destroyAllWindows()
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