How to save an image from Picturebox that load from camera? - vb.net

Question

I create a simple program that getting image from camera and display it in picturebox using a Aforge library. However, when I try to save the image from picture box. It prompt an error like this " 'System.Runtime.InteropServices.ExternalException' in System.Drawing.dll. A generic error occurred in GDI+. "
I did some research but not found any helpful solution.
Below are my following code use to save the image:
Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click
PictureBox1.Image.Save("C:\a.jpeg", ImageFormat.Jpeg)
End Sub
Updated Code :
Imports AForge
Imports AForge.Video
Imports AForge.Video.DirectShow
Imports AForge.Imaging.Filters
Imports AForge.Imaging
Imports System.Drawing.Imaging
Public Class Form1
Dim Filter As FilterInfoCollection
Dim Camera As VideoCaptureDevice
Dim MINR As Integer = 0
Dim MING As Integer = 0
Dim MINB As Integer = 0
Dim MAXR As Integer = 255
Dim MAXG As Integer = 255
Dim MAXB As Integer = 255
Private Sub Form1_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load
Filter = New FilterInfoCollection(FilterCategory.VideoInputDevice)
If Filter.Count > 0 Then
For Each ITEM In Filter
ComboBox1.Items.Add(ITEM.Name.ToString())
Next
CheckForIllegalCrossThreadCalls = False
Me.Location = New System.Drawing.Point(Me.Location.X, 0)
Else
MsgBox("NO Camera Found")
End If
End Sub
Private Sub ComboBox1_SelectedIndexChanged(sender As System.Object, e As System.EventArgs) Handles ComboBox1.SelectedIndexChanged
Camera = New VideoCaptureDevice(Filter(ComboBox1.SelectedIndex).MonikerString)
AddHandler Camera.NewFrame, New NewFrameEventHandler(AddressOf Video_NewFrame)
Camera.Start()
ComboBox1.Visible = False
End Sub
Private Sub Video_NewFrame(sender As Object, eventArgs As AForge.Video.NewFrameEventArgs)
Dim ORIGINAL As Bitmap = DirectCast(eventArgs.Frame.Clone(), Bitmap)
Dim FILTER As Bitmap = DirectCast(eventArgs.Frame.Clone(), Bitmap)
Dim CFILTER As New ColorFiltering
CFILTER.Red = New IntRange(MINR, MAXR)
CFILTER.Green = New IntRange(MING, MAXG)
CFILTER.Blue = New IntRange(MINB, MAXB)
CFILTER.ApplyInPlace(FILTER)
Dim GRAY As Grayscale = Grayscale.CommonAlgorithms.BT709
Dim IMAGING As Bitmap = GRAY.Apply(FILTER)
Dim BLOBS As New BlobCounter()
BLOBS.MinHeight = 10
BLOBS.MinWidth = 10
BLOBS.ObjectsOrder = ObjectsOrder.Size
BLOBS.ProcessImage(IMAGING)
Dim Rectangle As Rectangle() = BLOBS.GetObjectsRectangles()
If Rectangle.Count > 0 Then
Dim Rectangle2 As Rectangle = Rectangle(0)
Dim STYLE As Graphics = Graphics.FromImage(ORIGINAL)
Dim CLR As New Pen(Color.Lime, 5)
STYLE.DrawRectangle(CLR, Rectangle2)
STYLE.Dispose()
End If
PictureBoxDefault.Image = ORIGINAL '
PictureBoxFilter.Image = FILTER
End Sub
Private Sub TrackBarMINR_Scroll(sender As System.Object, e As System.EventArgs) Handles TrackBarMINR.Scroll
MINR = TrackBarMINR.Value
LabelMINR.Text = "MINR: " & MINR
End Sub
Private Sub TrackBarMING_Scroll(sender As System.Object, e As System.EventArgs) Handles TrackBarMING.Scroll
MING = TrackBarMING.Value
LabelMING.Text = "MING: " & MING
End Sub
Private Sub TrackBarMINB_Scroll(sender As System.Object, e As System.EventArgs) Handles TrackBarMINB.Scroll
MINB = TrackBarMINB.Value
LabelMINB.Text = "MINB: " & MINB
End Sub
Private Sub TrackBarMAXR_Scroll(sender As System.Object, e As System.EventArgs) Handles TrackBarMAXR.Scroll
MAXR = TrackBarMAXR.Value
LabelMAXR.Text = "MAXR: " & MAXR
End Sub
Private Sub TrackBarMAXG_Scroll(sender As System.Object, e As System.EventArgs) Handles TrackBarMAXG.Scroll
MAXG = TrackBarMAXG.Value
LabelMAXG.Text = "MAXG: " & MAXG
End Sub
Private Sub TrackBarMAXB_Scroll(sender As System.Object, e As System.EventArgs) Handles TrackBarMAXB.Scroll
MAXB = TrackBarMAXB.Value
LabelMAXB.Text = "MAXB: " & MAXB
End Sub
Private Sub Form1_FormClosing(sender As Object, e As System.Windows.Forms.FormClosingEventArgs) Handles Me.FormClosing
Try
Camera.SignalToStop()
Catch ex As Exception
End Try
End Sub
Private Sub Button2_Click(sender As Object, e As EventArgs) Handles btnSave.Click
PictureBox1.Image.Save("D:\a.png", ImageFormat.Png)
End Sub
End Class

Answer 1

I had the same issue.
The code below is now working for me.
Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click
Dim img As Bitmap = PictureBox1.Image.Clone
img.Save("Z:\test.bmp", System.Drawing.Imaging.ImageFormat.Bmp)
End Sub
Just change "Z:\test.bmp" to your directory, haven't tried any other image formats but this is the only way I have gotten it to work so far.