How do I capture images in OpenCV and saving in pgm format?

Question

I am brand new to programming in general, and am working on a project for which I need to capture images from my webcam (possibly using OpenCV), and save the images as pgm f

Answer 1

Read most of the answers but none of them could satisfy the need that I have. This will act as a camera and can be used to click pictures we can change the if("c") condition to a for loop to click pictures automatically after certain interval

   # -*- coding: utf-8 -*-
"""
Created on Sun Aug 12 12:29:05 2018

@author: CodersMine
"""


import cv2
"""
Run this if you are facing invalid images issue
cap.release()

"""
cap = cv2.VideoCapture(0)#0 is internal cam : 1 is external webcam
i=0 #to save all the clicked images
while(True):
    ret, frame = cap.read()
    cv2.imshow("imshow",frame)
    key=cv2.waitKey(30)
    if key==ord('q'):
        break
    if key==ord('c'):
        i+=1
        cv2.imshow("imshow2",frame)
        cv2.imwrite('C:/Users/codersmine/desktop/image'+str(i)+'.png', frame)
        print("Wrote Image")

# release the capture
cap.release()
cv2.destroyAllWindows()