Question

使用Visual Basic 2008和Emgu CV，我可以在PC上捕获网络摄像头流。 我想要做的是使用Capture = New Capture（）连接到IP相机，知道其URL。

这是我的代码：

Imports Emgu.CV
Imports Emgu.CV.Util
Imports Emgu.CV.Structure

Public Class Form1

Dim capturez As Capture = New Capture("rtsp://[IP Address]/mpeg4/media.amp")

Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick

    Dim imagez As Image(Of Bgr, Byte) = capturez.QueryFrame()
    PictureBox1.Image = imagez.ToBitmap()

End Sub

End Class

我收到以下错误：无法从rtsp创建捕获：// [IP地址] /mpeg4/media.amp

使用Capture = New Capture可以做到这一点吗？如果没有，是他们的任何其他方法吗？

感谢。

Answer 1

这是我最后使用的解决方案。它仅适用于JPEG网络摄像头（不是MJPEG），不需要EmguCV

'Connect To Webcam ----------------------------------------------------------------------
    Dim NumberFrames As Integer = 1
    Dim imgNum = Convert.ToString(FrameNumber)
    Dim sourceURL As String = ("http://91.142.238.200/record/current.jpg?rand=" + imgNum)
    'create HTTP request
    Dim req As HttpWebRequest = HttpWebRequest.Create(sourceURL)
    'get response
    Dim res As HttpWebResponse = req.GetResponse
    'get response stream
    Dim reader As New StreamReader(res.GetResponseStream())
    'read data from stream
    Dim img As Image = Image.FromStream(res.GetResponseStream())
    'get bitmap
    PictureBox1.Image = img
    'Increment frame
    FrameNumber = FrameNumber + 1
    '-----------------------------------------------------------------------------------------

Answer 2

这款相机有ip用户名和密码吗？如果你尝试这样的事情：

Imports Emgu.CV
Imports Emgu.CV.Util
Imports Emgu.CV.Structure

Public Class Form1

Dim capturez As Capture = New Capture("rtsp://username:password@[IP Address]/mpeg4/media.amp")

Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick

Dim imagez As Image(Of Bgr, Byte) = capturez.QueryFrame()
PictureBox1.Image = imagez.ToBitmap()

End Sub


End Class

使用Emgu CV连接到IP摄像头Capture = New Capture（）

2 个答案: