/Python/Take pictures from webcam python

Take pictures from webcam python

How to open webcam with python

import cv2

cap = cv2.VideoCapture(0)

# Check if the webcam is opened correctly
if not cap.isOpened():
    raise IOError("Cannot open webcam")

while True:
    ret, frame = cap.read()
    frame = cv2.resize(frame, None, fx=0.5, fy=0.5, interpolation=cv2.INTER_AREA)
    cv2.imshow('Input', frame)

    c = cv2.waitKey(1)
    if c == 27:
        break

cap.release()
cv2.destroyAllWindows()

Source: subscription.packtpub.com

Take pictures from webcam python

from cv2 import *
# initialize the camera
cam = VideoCapture(0)   # 0 -> index of camera
s, img = cam.read()
if s:    # frame captured without any errors
    namedWindow("cam-test",CV_WINDOW_AUTOSIZE)
    imshow("cam-test",img)
    waitKey(0)
    destroyWindow("cam-test")
    imwrite("filename.jpg",img) #save image

Source: stackoverflow.com

Image capture from camera python

import cv2

cam = cv2.VideoCapture(0)

cv2.namedWindow("test")

img_counter = 0

while True:
    ret, frame = cam.read()
    if not ret:
        print("failed to grab frame")
        break
    cv2.imshow("test", frame)

    k = cv2.waitKey(1)
    if k%256 == 27:
        # ESC pressed
        print("Escape hit, closing...")
        break
    elif k%256 == 32:
        # SPACE pressed
        img_name = "opencv_frame_{}.png".format(img_counter)
        cv2.imwrite(img_name, frame)
        print("{} written!".format(img_name))
        img_counter += 1

cam.release()

cv2.destroyAllWindows()

Source: stackoverflow.com

Similar codes

18 votes290 views4 answers
Python remove duplicate numbers
Python
0 vote298 views1 answer
Ajouter élément liste python
Python
1 vote359 views1 answer
Django model query add annotation field to show duplicate count
Python Django
15 votes335 views3 answers
How to get the first key of a dictionary in python
Python
89 votes302 views4 answers
New env in conda
Python
3 votes316 views2 answers
Python try without except
Python
0 vote298 views1 answer
Dataclass in python
Python
0 vote324 views1 answer
Django get current user in form
Python
2 votes334 views5 answers
Swap keys and values in dictionary python
Python
-2 votes324 views1 answer
How to make discord.py rewrite bot dm someone
Python