LEADTOOLS WIA (Leadtools.Wia assembly)

AcquireImageFromVideo Method

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Extracts a still image from the video stream, and saves the image as a JPEG file.
Syntax
public string AcquireImageFromVideo()
'Declaration
 
Public Function AcquireImageFromVideo() As String
'Usage
 
Dim instance As WiaSession
Dim value As String
 
value = instance.AcquireImageFromVideo()

            

            
public:
String^ AcquireImageFromVideo(); 

Return Value

A System.String containing the full path and filename of the captured JPEG file from the camera device.
Remarks

This method will capture a still image from the video stream and save it as a JPEG file.

To change the directory where the captured image is saved, set the new folder path in the value parameter and then call the WiaSession.SetPropertyString method, passing WiaPropertyId.VideoDeviceImagesDirectory for the propertyId parameter of this method.

Example
Refer to WiaSession.IsVideoPreviewAvailable.
Requirements

Target Platforms

See Also

Reference

WiaSession Class
WiaSession Members
Startup Method
Shutdown Method
SelectDevice Method
SelectDeviceDlg Method
IsVideoPreviewAvailable Method
StartVideoPreview Method
ResizeVideoPreview Method
EndVideoPreview Method

 

 


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