How to get the image buffer of videoOutput?

[stereoMatching]

Rectangle {
        width: 320
        height: 240
 
        Camera{
            id: camera
        }
 
        VideoOutput {
            id: videoOutput
 
            anchors.fill: parent
            source: camera
        }    
 
        GammaAdjust {
            id: gammaAdjust
 
            anchors.fill: videoOutput
            source: videoOutput
            gamma: 0.5
        }
    }

Rectangle {
        width: 320
        height: 240
     
        Camera{
            id: camera
        }
     
        VideoOutput {
            id: videoOutput
     
            anchors.fill: parent
            source: camera
        }    
     
        GammaAdjust {
            id: gammaAdjust
     
            anchors.fill: videoOutput
            source: videoOutput
            gamma: 0.5
        }
    }

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The source of the videoOutput come from camera
then process by the GammaAdjust
How could I get the image after process?
Any workaround?

[wysota]

What do you mean by "get" the image? If you want to do some more manipulation before displaying the frame, you can use ShaderEffectSource.