Webcam Image Acquisition
You create awebcam
object and then use thesnapshot
function to acquire images from the webcam. You can acquire a single image or set up a loop to acquire multiple images. Use thepreview
function to test the camera stream.
You can set device-specific properties, such as resolution and brightness, if your camera allows programmatic access. These properties vary depending on your device. To see the properties for your camera, look at the output when you create thewebcam
object. For information about setting properties, seeSet Properties for Webcam Acquisition.
Functions
webcamlist |
List of webcams connected to your system |
webcam |
Connection to a webcam |
preview |
Preview live video data from webcam |
snapshot |
Acquire single image frame from a webcam |
closePreview |
Close webcam preview window |
Live Editor Tasks
Acquire Webcam Image | Acquire snapshot from webcam in the Live Editor |
Topics
- Webcam Acquisition Overview
You can use MATLAB®webcam support to bring live images from any USB Video Class (UVC) compliant webcam into MATLAB. Supported platforms are listed here.
- 从摄像头获取图像
To acquire images from a webcam, you first create a webcam object using the
webcam
function. This example describes the typical workflow for acquiring images from webcams and bringing them into MATLAB. - Acquire Webcam Images in a Loop
The
snapshot
function acquires a single image from a webcam. If you want to acquire images in a loop, you can do that with some extra programming. - Acquiring a Single Image in a Loop
This example shows how to use the
snapshot
function to acquire live images from USB webcams. - Logging Video to Disk
This example shows how to use the
snapshot
function to acquire live images and log the video to disk. - Set Properties for Webcam Acquisition
You can set object-specific properties for the
webcam
object to use with any webcam. You can also set device-specific properties for a specific webcam, if supported by your device.