Detect percentage of white pixels in jpg image

    Public Function isWhiteImage(ByVal theImage As System.Drawing.Bitmap) As Boolean

        Dim bitmap As New Aurigma.GraphicsMill.Bitmap(theImage)
        Dim data As BitmapData = bitmap.LockBits()

        'Number of rows
        Dim height As Integer = data.Height
        'Number of columns
        Dim width As Integer = data.Width
        Dim countOfWhitePixels As Integer = 0

        Dim i, j As Integer
        For i = 0 To height - 1
            For j = 0 To width - 1

                'Read a single pixel
                Dim color As Aurigma.GraphicsMill.Color = data.GetPixel(i, j)
                If (color.GetChannel32(ColorChannel.Red) = color.GetChannel32(ColorChannel.Green)) Then
                    If (color.GetChannel32(ColorChannel.Red) = color.GetChannel32(ColorChannel.Blue)) Then
                        countOfWhitePixels = countOfWhitePixels + 1
                        If countOfWhitePixels > (data.Height / 2) Then
                            i = height - 1
                            j = width - 1
                        End If
                    End If
                End If
            Next j
        Next i

        bitmap.UnlockBits(data)
        If (countOfWhitePixels >= data.Height / 2) Then
            Return True
        Else
            Return False
        End If

    End Function