opencv convert to grayscale code example
Example 1: cv2 grayscale
gray = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)
Example 2: opencv grayscale to rgb
backtorgb = cv2.cvtColor(gray,cv2.COLOR_GRAY2RGB)
Example 3: convert image to grayscale opencv
img = cv2.imread(path)
img_gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
Example 4: convert image to grayscale opencv
img_gray_mode = cv2.imread(path, cv2.IMREAD_GRAYSCALE)
Example 5: 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()
Example 6: cvtcolor rgb to gray
cv::Mat img
cv::cvtColor(img, img, CV_BGR2GRAY);