how to convert into grayscale opencv
import cv2
# Reading color image as grayscale
gray = cv2.imread("color-img.png",0)
# Showing grayscale image
cv2.imshow("Grayscale Image", gray)
# waiting for key event
cv2.waitKey(0)
# destroying all windows
cv2.destroyAllWindows()cvtcolor rgb to gray
cv::Mat img
cv::cvtColor(img, img, CV_BGR2GRAY);Copyright © 2021 Codeinu
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