Gray_Capture_Convertor.py

# -*- coding: utf-8 -*-
"""
Created on Wed Mar 18 12:29:45 2020

REQUIREMENTS:-
You need to press 's' (on keyboard) for conversion and capture of 28x28 image conversion.
One would require DLIB for image recognition, on which I am working.
Here is the basic code or skeleton of our project for detection purposes only. 
"""

import cv2

key = cv2. waitKey(1)
cam = cv2.VideoCapture(0)
while True:
    try:
        check, frame = cam.read()
        print(check) #prints true as long as the cam is running
        print(frame) #prints matrix values of each framecd 
        cv2.imshow("Capturing", frame)
        key = cv2.waitKey(1)
        
        if key == ord('s'):  #Keyboard input 's' saves an image 
            cv2.imwrite(filename='new_gray_saved_img.jpg', img=frame)
            cam.release()
            img_new = cv2.imread('new_gray_saved_img.jpg', cv2.IMREAD_GRAYSCALE) #Read and grayscale conversion
            img_new = cv2.imshow("Captured Image", img_new) #Show image
            cv2.waitKey(1650) #sleep functionality equivalent
            cv2.destroyAllWindows()
            
            print("Processing image...")
            img_ = cv2.imread('new_gray_saved_img.jpg', cv2.IMREAD_ANYCOLOR)
            print("Converting RGB image to grayscale...")
            gray = cv2.cvtColor(img_, cv2.COLOR_BGR2GRAY)
            print("Converted RGB image to grayscale...")
            
            print("Resizing image to 28x28 scale...")
            img_ = cv2.resize(gray,(28,28))
            print("Resized...")
            img_resized = cv2.imwrite(filename='gray_saved_img-final.jpg', img=img_)
            print("Image saved!")
            break
        
        elif key == ord('q'):
            print("Turning off camera.")
            cam.release()
            print("Camera off.")
            print("Program ended.")
            cv2.destroyAllWindows()
            break
        
    except(KeyboardInterrupt):
        print("Turning off camera.")
        cam.release()
        print("Camera off.")
        print("Program ended.")
        cv2.destroyAllWindows()
        break