AForge.视频-摄像机未居中

Question

我正在使用AForge.Video在我的笔记本电脑中使用相机。但为什么摄像机拍摄的视频没有居中呢？

以下是我的代码：

 Dim videoDevices As FilterInfoCollection
 Dim videoSource As VideoCaptureDevice
 videoDevices = New FilterInfoCollection(FilterCategory.VideoInputDevice)
 videoSource = New VideoCaptureDevice(videoDevices(0).MonikerString)
 AddHandler videoSource.NewFrame, AddressOf Me.video_NewFrame
  Sub video_NewFrame(sender As Object,
        eventArgs As NewFrameEventArgs)
        Dim bitmap As Bitmap
        Try
            bitmap = eventArgs.Frame
            If Not bitmap Is Nothing Then

                PictureBox1.Image = DirectCast(bitmap.Clone(), Bitmap)
                PictureBox1.Refresh()
            End If
        Catch
        End Try
    End Sub

谢谢！

Answer 1

我不相信我理解你所说的"相机不居中"是什么意思，但我知道最好使用AForge Clone（）来获取video_NewFrame事件处理程序中的帧

bitmap = AForge.Imaging.Image.Clone(eventArgs.Frame);

并确保您的PictureBox1 sizemode属性设置为"StretchImage"