Manipulasi Citra Lanjutan

Public Class Form1
    Dim gambar As Bitmap
    Private Sub OpenCitraToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles OpenCitraToolStripMenuItem.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 SaveCitraToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles SaveCitraToolStripMenuItem.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 GrayscaleToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles GrayscaleToolStripMenuItem.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 NegatifToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles NegatifToolStripMenuItem.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 BrightnessToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BrightnessToolStripMenuItem.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 > 255 Then vM = 255
                    If vB > 255 Then vB = 255
                    If vH > 255 Then vH = 255
                    .SetPixel(Pc, Pb, Color.FromArgb(vM, vH, vB))
                Next
                Pic2.Image = gambar
                Pic2.Refresh()
            Next
        End With
    End Sub

    Private Sub DefaultGambarToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles DefaultGambarToolStripMenuItem.Click
        gambar = New Bitmap(Pic1.Image)

    End Sub

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

    End Sub

    Private Sub BinerToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BinerToolStripMenuItem.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 RotateToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles RotateToolStripMenuItem.Click
        Dim grb As Image
        grb = Pic2.Image
        If grb IsNot Nothing Then grb.RotateFlip(RotateFlipType.Rotate90FlipX)
        Pic2.Image = grb
    End Sub

    Private Sub Btnred_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Btnhijauk.Click
        Dim Pb, Pc As Integer
        Dim vM, vH, vB As Double

        Dim gambar2 = New Bitmap(Pic2.Image)
        For Pb = 0 To gambar2.Height - 1
            For Pc = 0 To gambar2.Width - 1
                vM = gambar2.GetPixel(Pc, Pb).R
                vH = gambar2.GetPixel(Pc, Pb).G + 10
                vB = gambar2.GetPixel(Pc, Pb).B
                If vH >= 255 Then vH = 255
                gambar2.SetPixel(Pc, Pb, Color.FromArgb(vM, vH, vB))
            Next
            Pic2.Image = gambar2
            Pic2.Refresh()
        Next
    End Sub

    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        Pic2.Image = Pic1.Image
    End Sub

    Private Sub Btnhijau_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Btnhijau.Click
        Dim Pb, Pc As Integer
        Dim vM, vH, vB As Double

        Dim gambar2 = New Bitmap(Pic2.Image)
        For Pb = 0 To gambar2.Height - 1
            For Pc = 0 To gambar2.Width - 1
                vM = gambar2.GetPixel(Pc, Pb).R
                vH = gambar2.GetPixel(Pc, Pb).G - 10
                vB = gambar2.GetPixel(Pc, Pb).B
                If vH <= 0 Then vH = 0
                gambar2.SetPixel(Pc, Pb, Color.FromArgb(vM, vH, vB))
            Next
            Pic2.Image = gambar2
            Pic2.Refresh()
        Next
    End Sub

    Private Sub ContrasToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ContrasToolStripMenuItem.Click

        gambar = New Bitmap(Pic1.Image)
        Pic1.Image = gambar
        Dim tempbmp As New Bitmap(Pic1.Image)
        Dim DX As Integer = 1
        Dim DY As Integer = 1
        Dim Red, Green, Blue As Integer
        Dim X, Y As Integer
        Dim tc As Integer
        tc = 5

        With tempbmp
            For X = DX To .Height - DX - 1
                For Y = DY To .Width - DY - 1
                    Red = CInt(.GetPixel(Y, X).R)
                    Green = CInt(.GetPixel(Y, X).G)
                    Blue = CInt(.GetPixel(Y, X).B)
                    'Grey = (Red + Green + Blue) / 3 'konversi warna pada pixel Y,X ke grey
                    Red = Red * tc
                    Blue = Blue * tc
                    Green = Green * tc
                    If (Red > 255) Then
                        Red = 255
                    End If
                    If (Blue > 255) Then
                        Blue = 255
                    End If
                    If (Green > 255) Then
                        Green = 255
                    End If
                    gambar.SetPixel(Y, X, Color.FromArgb(Red, Green, Blue))
                Next
                If X Mod 10 = 0 Then
                    Pic1.Invalidate()
                    Pic1.Refresh()
                End If
            Next
        End With
    End Sub

    Private Sub SmoothingToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles SmoothingToolStripMenuItem.Click

        Dim MF(2, 2) As Double

        'MaskFilter.Show()
        'matriks Filter
        '  0 1 2
        '0 a b c
        '1 d e f
        '2 g h i

        'Filter smoothing
        MF(0, 0) = 1 / 9 'a
        MF(0, 1) = 1 / 9 'b
        MF(0, 2) = 1 / 9 'c

        MF(1, 0) = 1 / 9 'd
        MF(1, 1) = 1 / 9 'e
        MF(1, 2) = 1 / 9 'f

        MF(2, 0) = 1 / 9 'g
        MF(2, 1) = 1 / 9 'h
        MF(2, 2) = 1 / 9 'i

        gambar = New Bitmap(Pic1.Image)
        Pic1.Image = gambar
        Dim tempbmp As New Bitmap(Pic1.Image)
        Dim DX As Integer = 1
        Dim DY As Integer = 1
        Dim Red As Integer, Green As Integer, Blue As Integer

        Dim i As Integer, j As Integer
        Pic1.Width = Pic1.Width
        Pic1.Show()

        With gambar
            For i = DX To .Height - DX - 1
                For j = DY To .Width - DY - 1
                    'proses matriks filter
                    'point(j,i)*e --> titik tengah
                    Red = CInt(.GetPixel(j, i).R) * MF(1, 1)
                    Green = CInt(.GetPixel(j, i).G) * MF(1, 1)
                    Blue = CInt(.GetPixel(j, i).B) * MF(1, 1)
                    'proses titik tetangga
                    'point(j-1,i-1)*a--> MF(0,0)--> titik kiri atas
                    If j - 1 < 1 And i - 1 < 1 Then 'jika out of border ambil nilai tengah/point(x,y)
                        Red = Red + (CInt(.GetPixel(j, i).R) * MF(0, 0))
                        Green = Green + (CInt(.GetPixel(j, i).G) * MF(0, 0))
                        Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(0, 0))
                    Else
                        Red = Red + (CInt(.GetPixel(j - 1, i - 1).R) * MF(0, 0))
                        Green = Green + (CInt(.GetPixel(j - 1, i - 1).G) * MF(0, 0))
                        Blue = Blue + (CInt(.GetPixel(j - 1, i - 1).B) * MF(0, 0))
                    End If
                    'point(j,i-1)*b --> MF(0,1) --> titik atas
                    If i - 1 < 1 Then 'jika out of border ambil nilai tengah/point(x,y)
                        Red = Red + (CInt(.GetPixel(j, i).R) * MF(0, 1))
                        Green = Green + (CInt(.GetPixel(j, i).G) * MF(0, 1))
                        Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(0, 1))
                    Else
                        Red = Red + (CInt(.GetPixel(j, i - 1).R) * MF(0, 1))
                        Green = Green + (CInt(.GetPixel(j, i - 1).G) * MF(0, 1))
                        Blue = Blue + (CInt(.GetPixel(j, i - 1).B) * MF(0, 1))
                    End If
                    'point(j+1,i-1)*c --> MF(0,2) --> titik kanan atas
                    If j + 1 > .Width - DY - 1 And i - 1 > 1 Then 'jika out of border ambil nilai tengah/point(x,y)
                        Red = Red + (CInt(.GetPixel(j, i).R) * MF(0, 2))
                        Green = Green + (CInt(.GetPixel(j, i).G) * MF(0, 2))
                        Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(0, 2))
                    Else
                        Red = Red + (CInt(.GetPixel(j + 1, i - 1).R) * MF(0, 2))
                        Green = Green + (CInt(.GetPixel(j + 1, i - 1).G) * MF(0, 2))
                        Blue = Blue + (CInt(.GetPixel(j + 1, i - 1).B) * MF(0, 2))
                    End If
                    'point(j-1,i)*d --> MF(1,0) --> titik kiri
                    If j - 1 < 1 Then 'jika out of border ambil nilai tengah/point(x,y)
                        Red = Red + (CInt(.GetPixel(j, i).R) * MF(1, 0))
                        Green = Green + (CInt(.GetPixel(j, i).G) * MF(1, 0))
                        Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(1, 0))
                    Else
                        Red = Red + (CInt(.GetPixel(j - 1, i).R) * MF(1, 0))
                        Green = Green + (CInt(.GetPixel(j - 1, i).G) * MF(1, 0))
                        Blue = Blue + (CInt(.GetPixel(j - 1, i).B) * MF(1, 0))
                    End If
                    'point(j+1,i)*f --> MF(1,2) --> titik kanan 
                    If j + 1 > .Width - DY - 1 Then 'jika out of border ambil nilai tengah/point(x,y)
                        Red = Red + (CInt(.GetPixel(j, i).R) * MF(1, 2))
                        Green = Green + (CInt(.GetPixel(j, i).G) * MF(1, 2))
                        Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(1, 2))
                    Else
                        Red = Red + (CInt(.GetPixel(j + 1, i).R) * MF(1, 2))
                        Green = Green + (CInt(.GetPixel(j + 1, i).G) * MF(1, 2))
                        Blue = Blue + (CInt(.GetPixel(j + 1, i).B) * MF(1, 2))
                    End If
                    'point(j-1,i+1)*g --> MF(2,0) --> titik kiri bawah
                    If j - 1 < 1 And i + 1 > .Height - DX - 1 Then 'jika out of border ambil nilai tengah/point(x,y)
                        Red = Red + (CInt(.GetPixel(j, i).R) * MF(2, 0))
                        Green = Green + (CInt(.GetPixel(j, i).G) * MF(2, 0))
                        Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(2, 0))
                    Else
                        Red = Red + (CInt(.GetPixel(j - 1, i + 1).R) * MF(2, 0))
                        Green = Green + (CInt(.GetPixel(j - 1, i + 1).G) * MF(2, 0))
                        Blue = Blue + (CInt(.GetPixel(j - 1, i + 1).B) * MF(2, 0))
                    End If
                    'point(j,i+1)*g --> MF(2,1) --> titik bawah
                    If i + 1 > .Height - DX - 1 Then 'jika out of border ambil nilai tengah/point(x,y)
                        Red = Red + (CInt(.GetPixel(j, i).R) * MF(2, 1))
                        Green = Green + (CInt(.GetPixel(j, i).G) * MF(2, 1))
                        Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(2, 1))
                    Else
                        Red = Red + (CInt(.GetPixel(j, i + 1).R) * MF(2, 1))
                        Green = Green + (CInt(.GetPixel(j, i + 1).G) * MF(2, 1))
                        Blue = Blue + (CInt(.GetPixel(j, i + 1).B) * MF(2, 1))
                    End If
                    'point(j+1,i+1)*h --> MF(2,2) --> titik kanan bawah
                    If j + 1 > .Width - DY - 1 And i + 1 > .Height - DX - 1 Then 'jika out of border ambil nilai tengah/point(x,y)
                        Red = Red + (CInt(.GetPixel(j, i).R) * MF(2, 2))
                        Green = Green + (CInt(.GetPixel(j, i).G) * MF(2, 2))
                        Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(2, 2))
                    Else
                        Red = Red + (CInt(.GetPixel(j + 1, i + 1).R) * MF(2, 2))
                        Green = Green + (CInt(.GetPixel(j + 1, i + 1).G) * MF(2, 2))
                        Blue = Blue + (CInt(.GetPixel(j + 1, i + 1).B) * MF(2, 2))
                    End If
                    'normalisasi
                    If Red < 0 Then
                        Red = 0
                    Else
                        If Red > 255 Then
                            Red = 255
                        End If
                    End If
                    If Green < 0 Then
                        Green = 0
                    Else
                        If Green > 255 Then
                            Green = 255
                        End If
                    End If
                    If Blue < 0 Then
                        Blue = 0
                    Else
                        If Blue > 255 Then
                            Blue = 255
                        End If
                    End If

                    'simpan warna hasil smoothing ke point j,i
                    gambar.SetPixel(j, i, Color.FromArgb(Red, Green, Blue))
                Next
                If i Mod 10 = 0 Then
                    Pic1.Invalidate()
                    Me.Text = Int(100 * i / (Pic1.Image.Height - 2)).ToString & "%"
                    Pic1.Text = Int(100 * i / (Pic1.Image.Height - 2))
                    Pic1.Refresh()
                End If
            Next
        End With
        Pic1.Image = gambar
        Pic1.Refresh()
        Me.Text = "Proses Smoothing Image berhasil"

    End Sub
End Class