Pengolahan Citra Lanjutan

Public Class Form1
    Dim GAMBAR As Bitmap

    Private Sub ToolStripMenuItem3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ToolStripMenuItem3.Click
        OFD.Filter = "BMP|*.BMP|JPG|*.JPG"
        OFD.Showdialog()

        If OFD.FileName = "" Then Exit Sub
        PIC1.IMAGE = Image.FromFile(OFD.FileName)
        GAMBAR = New Bitmap(Pic1.Image)

    End Sub

    Private Sub ToolStripMenuItem4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ToolStripMenuItem4.Click
        SFD.Filter = "JPG|*.JPG|BMP|*.BMP"
        SFD.ShowDialog()
        If SFD.FileName = "" Then Exit Sub
        If SFD.FilterIndex = 1 Then
            GAMBAR.Save(SFD.FileName, System.Drawing.Imaging.ImageFormat.Jpeg)
        End If
        If SFD.FilterIndex = 2 Then
            GAMBAR.Save(SFD.FileName, System.Drawing.Imaging.ImageFormat.Bmp)
        End If
    End Sub

    Private Sub ToolStripMenuItem7_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ToolStripMenuItem7.Click
        Dim Pb, Pc As Integer
        Dim Rt, vM, vH, vB As Double
        With GAMBAR
            For Pb = 0 To .Height - 1
                For Pc = 0 To .Width - 1
                    vM = .GetPixel(Pc, Pb).R
                    vH = .GetPixel(Pc, Pb).G
                    vB = .GetPixel(Pc, Pb).B
                    Rt = (vM + vH + vB) / 3
                    .SetPixel(Pc, Pb, Color.FromArgb(Rt, Rt, Rt))
                Next
                Pic2.Image = GAMBAR
                Pic2.Refresh()

            Next
        End With
    End Sub

    Private Sub ToolStripMenuItem8_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ToolStripMenuItem8.Click
        Dim Pb, Pc As Integer
        Dim vM, vH, vB As Double
        With GAMBAR
            For Pb = 0 To .Height - 1
                For Pc = 0 To .Width - 1
                    vM = 255 - .GetPixel(Pc, Pb).R
                    vH = 255 - .GetPixel(Pc, Pb).G
                    vB = 255 - .GetPixel(Pc, Pb).B
                    If vM <= 0 Then vM = 0
                    If vB <= 0 Then vB = 0
                    If vH <= 0 Then vH = 0
                    .SetPixel(Pc, Pb, Color.FromArgb(vM, vH, vB))
                Next
                Pic2.Image = GAMBAR
                Pic2.Refresh()

            Next
        End With
    End Sub

    Private Sub ToolStripMenuItem9_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ToolStripMenuItem9.Click
        Dim Pb, Pc As Integer
        Dim vM, vH, vB As Double
        With GAMBAR
            For Pb = 0 To .Height - 1
                For Pc = 0 To .Width - 1
                    vM = .GetPixel(Pc, Pb).R + 5
                    vH = .GetPixel(Pc, Pb).G + 5
                    vB = .GetPixel(Pc, Pb).B + 5
                    If vM > 0 Then vM = 225
                    If vB > 0 Then vB = 225
                    If vH > 0 Then vH = 225
                    .SetPixel(Pc, Pb, Color.FromArgb(vM, vH, vB))
                Next
                Pic2.Image = GAMBAR
                Pic2.Refresh()

            Next
        End With
    End Sub

    Private Sub ToolStripMenuItem2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ToolStripMenuItem2.Click
        GAMBAR = New Bitmap(Pic1.Image)
    End Sub

    Private Sub ToolStripMenuItem5_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ToolStripMenuItem5.Click
        End

    End Sub

    Private Sub ToolStripMenuItem10_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ToolStripMenuItem10.Click
        Dim Pb, Pc As Integer
        Dim Rata, vM, vH, vB As Double
        With GAMBAR
            For Pb = 0 To .Height - 1
                For Pc = 0 To .Width - 1
                    vM = .GetPixel(Pc, Pb).R
                    vH = .GetPixel(Pc, Pb).G
                    vB = .GetPixel(Pc, Pb).B
                    Rata = (vM + vH + vB) / 3
                    If (Rata < 128) Then
                        vM = 0
                        vH = 0
                        vB = 0
                    Else
                        vM = 255
                        vH = 255
                        vB = 255
                    End If
                    .SetPixel(Pc, Pb, Color.FromArgb(vM, vH, vB))
                Next
                Pic2.Image = GAMBAR
                Pic2.Refresh()

            Next
        End With

    End Sub

    Private Sub ToolStripMenuItem11_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ToolStripMenuItem11.Click
        Dim Pb, Pc As Integer
        Dim vM, vH, vB As Double
        Dim gambar3 As Bitmap = New Bitmap(Pic1.Image)
        With GAMBAR
            For Pb = .Height - 1 To 0 Step -1
                For Pc = .Width - 1 To 0 Step -1
                    vM = .GetPixel(Pc, Pb).R
                    vH = .GetPixel(Pc, Pb).G
                    vB = .GetPixel(Pc, Pb).B
                    gambar3.SetPixel(.Width - 1 - Pc, .Height - 1 - Pb, Color.FromArgb(vM, vH, vB))
                Next
                Pic2.Image = GAMBAR
                Pic2.Refresh()

            Next
        End With
        GAMBAR = gambar3
    End Sub
End Class

BENTUK-BENTUK TAMPILAN :

TAMPILAN GRAYSCALE