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image-acquisition-from-web-camera's Introduction

Image-Acquisition-from-Web-Camera

Aim

To write a python program using OpenCV to capture the image from the web camera and do the following image manipulations. i) Write the frame as JPG ii) Display the video iii) Display the video by resizing the window iv) Rotate and display the video

Software Used

Anaconda - Python 3.7

Algorithm

Step 1:

Use VideoCapture(0) to access web camera

Step 2:

use imshow to save imaage

Step 3:

use imshow to save imaage

Step 4:

use imshow to save imaage

Step 5:

End the program and close the output video windows by pressing 'q'

Program:

### Developed By:Hanumanth
### Register No:212222240016

## i) Write the frame as JPG file
import cv2
import numpy as np
cap=cv2.VideoCapture(0)
ret,frame=cap.read()
cv2.imwrite("pic_1.jpg",frame)




## ii) Display the video
import cv2
import numpy as np

cap = cv2.VideoCapture(0)


while True:
    ret, frame = cap.read()

    cv2.imshow("NewPicture",frame)
    if cv2.waitKey(1) & 0xFF == ord('q'):
        break

videoCaptureObject.release()
cv2.destroyAllWindows()




## iii) Display the video by resizing the window
import cv2
import numpy as np
cap=cv2.VideoCapture(0)

while True:
    ret,frame=cap.read()
    width=int(cap.get(3))
    height=int(cap.get(4))
    
    image=np.zeros(frame.shape, np.uint8)
    smaller_frame=cv2.resize(frame, (0,0), fx=0.5, fy=0.5)
    image[:height//2, :width//2]=smaller_frame
    image[height//2:, :width//2]=smaller_frame
    image[:height//2, width//2:]=smaller_frame
    image[height//2:, width//2:]=smaller_frame
    
    cv2.imshow('frame', image)
    if cv2.waitKey(1)==ord('q'):
        break
cap.release()
cv2.destroyAllWindows()






## iv) Rotate and display the video
import cv2
import numpy as np
cap=cv2.VideoCapture(0)

while True:
    ret,frame=cap.read()
    width=int(cap.get(3))
    height=int(cap.get(4))
    
    image=np.zeros(frame.shape, np.uint8)
    smaller_frame=cv2.resize(frame, (0,0), fx=0.5, fy=0.5)
    image[:height//2, :width//2]=smaller_frame
    image[height//2:, :width//2]=image[height//2:, :width//2] = cv2.rotate(smaller_frame,cv2.cv2.ROTATE_180)
    image[:height//2, width//2:]=smaller_frame
    image[height//2:, width//2:]=image[height//2:, width//2:] = cv2.rotate(smaller_frame,cv2.cv2.ROTATE_180)
    
    cv2.imshow('frame', image)
    if cv2.waitKey(1)==ord('q'):
        break
cap.release()
cv2.destroyAllWindows()








Output

i) Write the frame as JPG image

OUTPUT

ii) Display the video

OUTPUT)

iii) Display the video by resizing the window

OUTPUT

iv) Rotate and display the video

OUTPUT

Result:

Thus the image is accessed from webcamera and displayed using openCV.

image-acquisition-from-web-camera's People

Contributors

etjabajasphin avatar hanumanth26 avatar

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