Represent webcam video as stream of pixel arrays in Python

Question

I'm wondering if there is a way to analyse each frame of my webcam video per second as an array of pixels. For example:

So if my resolution of my webcam was 3 x 3 (it's not) the I would get a constantly refreshing list of this form(or close).

pixel_list = [[(R, G, B), (R, G, B)], [(R, G, B), (R, G, B)], [(R, G, B), (R, G, B)]}

Thanks!

A lot of my googling has pushed me in the direction of opencv, but i'm not sure 'how' exactly to get what i need done.

Velimir Mlaker · Accepted Answer · 2013-10-05 17:39:35Z

2

Here ya go!

import cv2
cap = cv2.VideoCapture(-1)
while True:
    print(cap.read())

The new OpenCV API (module cv2) uses NumPy arrays for images.

answered Oct 5, 2013 at 17:39

Velimir Mlaker

11k4 gold badges48 silver badges60 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

mguijarr · Accepted Answer · 2013-10-05 16:36:02Z

1

I recommend you to use Video4Linux to open your webcam, and to retrieve frames. Once youget the frames, you have pixel data. Here is a link to the Python binding for v4l: https://pypi.python.org/pypi/v4l2

Depending on what you need to do on the frames (which processing ?), opencv may be a good choice but for basic or even more advanced video data analysis, scipy is very good. There are also other image processing toolkits for Python.

answered Oct 5, 2013 at 16:36

mguijarr

8,0306 gold badges50 silver badges77 bronze badges

Collectives™ on Stack Overflow

Represent webcam video as stream of pixel arrays in Python

2 Answers 2

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related