Is there a way to convert img to grayscale with opencv

Question

I am trying to convert an image into grayscale using python and cv2. I saw a few other answers and they were using matlab, which I am not going to use. Is there anyway that I can fix this issue. The image boots up fine and everything it just wont convert. Here is the code.

import cv2

# Load some pre-trained data on face frontals form opencv (haar cascade algorithm)
trained_face_data = cv2.CascadeClassifier('haarcascade_frontalface_default.xml')

# Choose an image to detect faces in
img = cv2.imread('RDJ.png')

# Must convert to grayscale
grayscaled_img = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)


#
cv2.imshow('Face Detector', img)
cv2.waitKey()

I have tried to fix it using different things but I cant figure out any solutions.

Asked By: ParzaR

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Source

Answer 1

You need to change the penultimate line of your code:

cv2.imshow('Face Detector', grayscaled_img)

Because the image showed is the original.

Answered By: amkawai

Is there a way to convert img to grayscale with opencv

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