Image Acqusition using 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

Anaconda - Python 3.7

Algorithm

Step 1:

Use cv2.VideoCapture(0) to access web camera

Step 2:

Use cv2.imread to read the video or image

Step 3:

Use cv2.imwrite to save the image

Step 4:

Use cv2.imshow to show the video

Step 5:

End the program and close the output video window by pressing 'q'.

Program:

Developed By: Sri Varshan P

Register No: 212222240104

i) Write the frame as JPG file

import cv2
viedoCaptureObject=cv2.VideoCapture(0)
while(True):
    ret,frame=viedoCaptureObject.read()
    cv2.imwrite("SriVarshan.jpg",frame)
    result=False
viedoCaptureObject.release()
cv2.destroyAllWindows()

ii) Display the video

import numpy as np
import cv2
cap=cv2.VideoCapture(0)
while True:
    ret,frame=cap.read()
    cv2.imshow('Shangai',frame)
    if cv2.waitKey(1)==ord('q'):
        break
cap.release()
cv2.destroyAllWindows()

iii) Display the video by resizing the window

import numpy as np
import cv2
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('212222240104-PsvVarshan,image)
    if cv2.waitKey(1)==ord('q'):
        break
cap.release()
cv2.destroyAllWindows()

iv) Rotate and display the video

import numpy as np
import cv2
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]=cv2.rotate(smaller_frame,cv2.ROTATE_180)
    image[height//2:, :width//2]=smaller_frame
    image[:height//2, width//2:]=cv2.rotate(smaller_frame,cv2.ROTATE_180)
    image[height//2:, width//2:]=smaller_frame
    cv2.imshow('212222240104_PsvVarshan',image)
    if cv2.waitKey(1)==ord('q'):
        break
cap.release()
cv2.destroyAllWindows()

psrivarshan / image_acqusition-_using_web_camera Goto Github PK

image_acqusition-_using_web_camera's Introduction

Image Acqusition using 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

Anaconda - Python 3.7

Algorithm

Step 1:

Use cv2.VideoCapture(0) to access web camera

Step 2:

Use cv2.imread to read the video or image

Step 3:

Use cv2.imwrite to save the image

Step 4:

Use cv2.imshow to show the video

Step 5:

Program:

Developed By: Sri Varshan P

Register No: 212222240104

i) Write the frame as JPG file

ii) Display the video

iii) Display the video by resizing the window

iv) Rotate and display the video

Output

i) Write the frame as JPG image

ii) Display the video

iii) Display the video by resizing the window

iv) Rotate and display the video

Result:

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

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