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7/25/2019 Praktikum Kecerdasan Buatan Lanjutan-1

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COMPUTER VISION - IMAGE PROCESSING

David, S.Kom., M.Cs| 1

Reduksi Noise

Reduksi Noise dengan Filter Rata-rata

Desain Form

Listing program

Dim wt(400, 400) As IntegerDim Nfilter As IntegerDim h() As Single

Private Sub Command1_Click()If Option1 Then

Nfilter = 3ElseIf Option2 Then

Nfilter = 5

ElseNfilter = 7End If

ReDim h(Nfilter + 1, Nfilter + 1) As Single

'Randomize TimerFor i = 1 To Nfilter

For j = 1 To Nfilterh(i, j) = 1 / (Nfilter ^ 2)

Next jNext i

probNoise = Val(Text1)dx = 0

sx = 0


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n1 = 0For i = 1 To Picture4.ScaleWidth Step 15

n1 = n1 + 1n2 = 0

For j = 1 To Picture4.ScaleHeight Step 15warna = Picture4.Point(i, j)r = warna And RGB(255, 0, 0)g = Int((warna And RGB(0, 255, 0)) / 256)b = Int(Int((warna And RGB(0, 0, 255)) / 256) / 256)wx = Int((r + g + b) / 3)n2 = n2 + 1wt(n1, n2) = wxPicture4.PSet (i, j), RGB(wx, wx, wx)

'Pembangkitan Noise Gaussian'Menggunakan metode Rejection

sw = 0While sw = 0

x = 2 * Rnd - 1y = RndIf y < Exp(-x ^ 2) Then

sw = xEnd If

Wendwx1 = Abs(wx + sw * 255 * probNoise)If wx1 > 255 Then wx1 = 255

Picture2.PSet (i, j), RGB(wx1, wx1, wx1)nx = nx + Abs(wx1 - wx)sx = sx + Abs(wx)Next j

Next isnr = 10 * Log(sx / nx) / Log(10)Label1.Caption = snrEnd Sub

Private Sub Command2_Click()Dim xt(400, 400) As IntegerIf Option1 Then


Nfilter = 5Else

Nfilter = 7End If


Randomize TimerFor i = 1 To Nfilter

For j = 1 To Nfilterh(i, j) = 1 / (Nfilter ^ 2)

Next jNext i

'RGB to Grayn1 = 0For i = 1 To Picture4.ScaleWidth Step 15n1 = n1 + 1n2 = 0

For j = 1 To Picture4.ScaleHeight Step 15warna = Picture2.Point(i, j)r = warna And RGB(255, 0, 0)g = Int((warna And RGB(0, 255, 0)) / 256)


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b = Int(Int((warna And RGB(0, 0, 255)) / 256) / 256)n2 = n2 + 1wx = Int((r + g + b) / 3)xt(n1, n2) = wx

Next jNext i'Proses Filter dengan KonvolusiOn Error Resume Next

nx = 0sx = 0m = Int(Nfilter / 2)For i = 1 To n1

For j = 1 To n2z = 0For u1 = -m To m

For u2 = -m To mIf i + u1 < 0 Or j + u2 < 0 Then ft = 0 Else ft = xt(i + u1, j +

u2)z = z + h(u1 + m + 1, u2 + m + 1) * ft

Next u2Next u1Picture3.PSet ((i - 1) * 15 + 1, (j - 1) * 15 + 1), RGB(z, z, z)nx = nx + Abs(z - wt(i, j))sx = sx + Abs(wt(i, j))

Next jNext isnr = 10 * Log(sx / nx) / Log(10)Label2.Caption = snrEnd Sub

Private Sub cmdClose_Click()EndEnd Sub

Private Sub cmdOpen_Click()CommonDialog1.Filter = "File Gambar(*.bmp)|*.bmp|" & _

"File Gambar(*.jpg)|*.jpg | Semua File Gambar(*.*)|" & _"*.bmp ;*.jpg"CommonDialog1.ShowOpennamafile = CommonDialog1.FileNamePicture1.Picture = LoadPicture(namafile)

End Sub

Private Sub Command3_Click()Picture2.ClsPicture3.ClsPicture4.ClsErase h

End Sub

Private Sub Command4_Click()Dim xt(400, 400) As Integer

Randomize Timern1 = 0


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For i = 1 To Picture1.ScaleWidth Step 15n1 = n1 + 1n2 = 0

For j = 1 To Picture1.ScaleHeight Step 15

warna = Picture1.Point(i, j)r = warna And RGB(255, 0, 0)g = Int((warna And RGB(0, 255, 0)) / 256)b = Int(Int((warna And RGB(0, 0, 255)) / 256) / 256)n2 = n2 + 1wx = Int((r + g + b) / 3)xt(n1, n2) = wxPicture4.PSet (i, j), RGB(wx, wx, wx)

Next jNext iEnd Sub

Private Sub Form_Load()

Randomize TimerEnd Sub


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Reduksi Noise

Reduksi Noise dengan Filter Gaussian

Desain Form

Listing Program

Dim wt(400, 400) As IntegerDim h() As SingleDim Nfilter As Integer

Private Sub cmdClose_Click()EndEnd Sub

Private Sub cmdOpen_Click()CommonDialog1.Filter = "File Gambar(*.bmp)|*.bmp|" & _

"File Gambar(*.jpg)|*.jpg | Semua File Gambar(*.*)|" & _"*.bmp ;*.jpg"CommonDialog1.ShowOpennamafile = CommonDialog1.FileNamePicture1.Picture = LoadPicture(namafile)

End Sub

Private Sub Command1_Click()If Option1 Then

Nfilter = 3

ElseIf Option2 Then


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Nfilter = 5Else

Nfilter = 7End If


Randomize Timer'Nfilter = 7s = 0.5m = Int(Nfilter / 2) + 1sh = 0For i = 1 To Nfilter

t1 = (1 - m) / (m - 1)For j = 1 To Nfilter

t2 = (j - m) / (m - 1)h(i, j) = Exp(-(t1 ^ 2 + t2 ^ 2) / (2 * s ^ 2)) / (s ^ 2 * 3.14 ^ 0.5)sh = sh + h(i, j)

Next jNext iFor i = 1 To Nfilter

For j = 1 To Nfilterh(i, j) = h(i, j) / sh

Next jNext i

probNoise = Val(Text1)dx = 0sx = 0n1 = 0For i = 1 To Picture4.ScaleWidth Step 15

n1 = n1 + 1n2 = 0

For j = 1 To Picture4.ScaleHeight Step 15warna = Picture4.Point(i, j)r = warna And RGB(255, 0, 0)g = Int((warna And RGB(0, 255, 0)) / 256)b = Int(Int((warna And RGB(0, 0, 255)) / 256) / 256)wx = Int((r + g + b) / 3)n2 = n2 + 1wt(n1, n2) = wxPicture4.PSet (i, j), RGB(wx, wx, wx)

'Pembangkitan Noise Gaussian'Menggunakan metode Rejection

sw = 0While sw = 0

x = 2 * Rnd - 1y = Rnd

If y < Exp(-x ^ 2) Thensw = x

End IfWendwx1 = Abs(wx + sw * 255 * probNoise)If wx1 > 255 Then wx1 = 255

Picture2.PSet (i, j), RGB(wx1, wx1, wx1)nx = nx + Abs(wx1 - wx)sx = sx + Abs(wx)Next j

Next isnr = 10 * Log(sx / nx) / Log(10)Label1.Caption = snrEnd Sub


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Private Sub Command2_Click()Dim xt(400, 400) As Integer

If Option1 Then


Nfilter = 5Else

Nfilter = 7End If


Randomize Timer'Nfilter = 7s = 0.5m = Int(Nfilter / 2) + 1sh = 0For i = 1 To Nfilter

t1 = (i - m) / (m - 1)For j = 1 To Nfilter

t2 = (j - m) / (m - 1)h(i, j) = Exp(-(t1 ^ 2 + t2 ^ 2) / (2 * s ^ 2)) / (s ^ 2 * 3.14 ^ 0.5)sh = sh + h(i, j)

Next jNext iFor i = 1 To Nfilter

For j = 1 To Nfilterh(i, j) = h(i, j) / sh

Next jNext i

'RGB to Graym = Int(Nfilter / 2)n1 = 0For i = 1 To Picture4.ScaleWidth Step 15n1 = n1 + 1n2 = 0

For j = 1 To Picture4.ScaleHeight Step 15warna = Picture2.Point(i, j)r = warna And RGB(255, 0, 0)g = Int((warna And RGB(0, 255, 0)) / 256)b = Int(Int((warna And RGB(0, 0, 255)) / 256) / 256)wx = Int((r + g + b) / 3)n2 = n2 + 1xt(n1, n2) = wx

Next j

Next i'Proses Filter dengan Konvolusinx = 0sx = 0For i = 1 To n1

For j = 1 To n2z = 0For u1 = -m To m

For u2 = -m To mIf i + u1 < 0 Or j + u2 < 0 Then ft = 0 Else ft = xt(i + u1, j +

u2)z = z + h(u1 + m + 1, u2 + m + 1) * ft 'xt(i + u1, j + u2)

Next u2Next u1

Picture3.PSet ((i - 1) * 15 + 1, (j - 1) * 15 + 1), RGB(z, z, z)nx = nx + Abs(z - wt(i, j))


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sx = sx + Abs(wt(i, j))Next j

Next isnr = 10 * Log(sx / nx) / Log(10)

Label2.Caption = snrEnd Sub

Private Sub Command3_Click()Picture2.ClsPicture3.ClsPicture4.ClsErase hEnd Sub

Private Sub Command4_Click()

Dim xt(400, 400) As Integer

Randomize Timern1 = 0For i = 1 To Picture1.ScaleWidth Step 15n1 = n1 + 1n2 = 0

For j = 1 To Picture1.ScaleHeight Step 15warna = Picture1.Point(i, j)r = warna And RGB(255, 0, 0)g = Int((warna And RGB(0, 255, 0)) / 256)b = Int(Int((warna And RGB(0, 0, 255)) / 256) / 256)n2 = n2 + 1wx = Int((r + g + b) / 3)xt(n1, n2) = wxPicture4.PSet (i, j), RGB(wx, wx, wx)

Next jNext iEnd Sub


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Edge Detection (Deteksi Tepi)

Edge Detection Metode Robert

Desain Form

Listing program

Dim wx(500, 500) As Integer

Dim M As Long, N As Long

Private Sub cmdcitraBiner_Click()Dim i As LongDim j As LongDim Warna As LongDim r As Long, g As Long, b As LongDim x As Long

picCapture.Cls

For i = 1 To picAsli.Width Step 15M = M + 1

N = 0For j = 1 To picAsli.Height Step 15

Warna = picAsli.Point(i, j)r = Warna And RGB(255, 0, 0)g = (Warna And RGB(0, 255, 0)) \ 256b = ((Warna And RGB(0, 0, 255)) \ 256) \ 256N = N + 1x = (r + g + b) \ 3

wx(M, N) = xpicCapture.PSet (i, j), RGB(x, x, x)

NextNextEnd Sub


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Private Sub cmdEdgeDetection_Click()''Metode RobertFor i = 1 To M

For j = 1 To N

If i = 1 Then wx1 = wx(i, j) Else wx1 = wx(i, j) - wx(i - 1, j)If j = 1 Then wx2 = wx(i, j) Else wx2 = wx(i, j) - wx(i, j - 1)w = Abs(wx1) + Abs(wx2)

If w > 255 Then w = 255picTepi.PSet ((i - 1) * 15 + 1, (j - 1) * 15 + 1), RGB(w, w, w)

NextNextEnd Sub

Private Sub cmdLoad_Click()Dim namafile As String

CD.DialogTitle = "Loading Gambar"CD.Filter = "Jpg file (*.jpg) |*.jpg"

CD.ShowOpennamafile = CD.FileName

picAsli.Picture = LoadPicture(namafile)Text1.Text = namafile

End Sub


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Edge Detection Metode Prewitt

Desain Form

Listing program

Dim wx(500, 500) As IntegerDim M As Long, N As LongDim h1(3, 3) As SingleDim h2(3, 3) As Single


picCapture.Cls

For i = 1 To picAsli.Width Step 15M = M + 1N = 0For j = 1 To picAsli.Height Step 15



NextNext


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End Sub

Private Sub cmdEdgeDetection_Click()''Metode PrewittFor i = 1 To M

For j = 1 To Nz1 = 0z2 = 0For u1 = -1 To 1

For u2 = -1 To 1z1 = z1 + h1(u1 + 2, u2 + 2) * wx(i + u1, j + u2)z2 = z2 + h2(u1 + 2, u2 + 2) * wx(i + u1, j + u2)

NextNextz = Int(Abs(z1 + z2))If z > 255 Then z = 255picTepi.PSet ((i - 1) * 15 + 1, (j - 1) * 15 + 1), RGB(z, z, z)

NextNextEnd Sub


CD.DialogTitle = "Loading Gambar"CD.Filter = "jpg file (*.jpg) |*.jpg"



End Sub

Private Sub Form_Load()h1(1, 1) = -1: h1(1, 2) = 0: h1(1, 3) = 1h1(2, 1) = -1: h1(2, 2) = 0: h1(2, 3) = 1h1(3, 1) = -1: h1(3, 2) = 0: h1(3, 3) = 1

For i = 1 To 3For j = 1 To 3

h2(i, j) = h1(j, i)NextNextEnd Sub


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Edge Detection Metode Sobel

Desain Form

Listing Program


Dim M As Long, N As LongDim h1(3, 3) As SingleDim h2(3, 3) As Single


picCapture.Cls




Next

Next


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End Sub

Private Sub cmdEdgeDetection_Click()''Metode SobelFor i = 1 To M




NextNextEnd Sub





End Sub

Private Sub Form_Load()h1(1, 1) = -1: h1(1, 2) = 0: h1(1, 3) = 1h1(2, 1) = -2: h1(2, 2) = 0: h1(2, 3) = 2h1(3, 1) = -1: h1(3, 2) = 0: h1(3, 3) = 1


h2(i, j) = h1(j, i)NextNext

End Sub


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Edge Detection Metode Filter Laplacian

Desain Form

Listing Program


Dim M As Long, N As LongDim h1(3, 3) As SingleDim h2(3, 3) As Single


picCapture.Cls




Next

Next


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End Sub

Private Sub cmdEdgeDetection_Click()''Metode SobelFor i = 1 To M




NextNextEnd Sub





End Sub

Private Sub Form_Load()h1(1, 1) = -1: h1(1, 2) = -1: h1(1, 3) = -1h1(2, 1) = -1: h1(2, 2) = 8: h1(2, 3) = -1h1(3, 1) = -1: h1(3, 2) = -1: h1(3, 3) = -1


h2(i, j) = h1(j, i)NextNext

End Sub

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