Capture Photo By USB Camera in Raspberry

We have some methods to use USB Camera, Webcam in Raspberry pi for Photo taken. You can see as bellow: 

Method 1: You need to install fswebcam too [sudo apt-get install fswebcam]
import time
import os
imageName = '%d-%m-%H%M%S' 
os.system('fswebcam -r 640x480 -S 15 --jpeg 80 --save /home/pi/Documents/raspberryProgram/'+imageName+'.jpg')
time.sleep(1)

Method 2: PyGame

import pygame, sys

from pygame.locals import *

import pygame.camera

import time

pygame.init()

pygame.camera.init

count = 0

while count < 5:

   width = 640

   height = 480

   cam = pygame.camera.Camera("/dev/video0",(width,height))

   cam.start()

   image = cam.get_image()

   cam.stop()

   pygame.image.save(image,str(count ) +'.jpg')  

   time.sleep(1) 

Method 3: OpenCV

import cv2
cam=cv2.VideoCapture(0)
img=cam.read()

cv2.namedwindow("camera", cv2.CV_WINDOW_AUTOSIZE)
cv2.imshow("camera",img)
cv2.waitKey(0)
cv2.destroywindow("camera")