LISTING PROGRAM
1.
Form1.vb
Imports System.Runtime.InteropServices Imports Microsoft.Office.Interop.Word Imports System.Text
Imports System.IO Imports System Imports System.Xml
Imports Microsoft.Office.Interop Imports System.Numerics
Public Class Form1
Dim w As Integer = 32 'block size dalam bit
Dim Pw As BigInteger = hextodec("B7E15163"), Qw As BigInteger = hextodec("9E3779B9") 'nilai magic untuk block size 32 bit
Dim round As Integer = 12 'jumlah round
Dim b_kecil As Integer = 16 'panjang password dalam byte/16 karakter Dim u As Integer = w / 8
Dim c As Integer = b_kecil / u Dim t As Integer = 2 * round + 2
Dim S As BigInteger() = New BigInteger(t) {} Dim L As BigInteger() = New BigInteger(c) {}
Function bit_to_string(ByVal a As String) As String
Dim total As Integer = 0
Dim sb, sb1 As New StringBuilder Dim temp As String = ""
For i As Integer = 1 To Len(a) sb.Append(Mid(a, i, 1))
If (Len(sb.ToString) = 8) Then
temp += Chr(Bin_To_Dec(sb.ToString)) sb.Clear()
End If Next Return temp End Function
Function string_to_bit(ByVal input As String) As String Dim Result As String = ""
For Each C As Char In input
Dim s As String = System.Convert.ToString(AscW(C), 2).PadLeft(8, "0")
Result &= s Next
Return Result End Function
Function desimal2biner(ByVal input As Long, ByVal bit As Integer) As String Dim biner_1 As String = ""
Dim tempbits As Long = Math.Pow(2, bit - 1) Dim inputcopy As Long = input
For i As Integer = 0 To bit - 1 If (inputcopy >= tempbits) Then inputcopy -= tempbits biner_1 = biner_1 + "1" Else
biner_1 = biner_1 + "0" End If
If (tempbits > 1) Then tempbits = tempbits / 2 End If
Next
Return biner_1 End Function
Function biner2desimal(ByVal input As String, ByVal bit As Integer) As Integer
Function rotasikiri(ByVal input As Long, ByVal count As Integer, ByVal bit As Integer) As Long
Dim biner As String = desimal2biner(input, bit)
Dim binerrotasikiri As String = biner.Substring(count, biner.Length - count) + biner.Substring(0, count)
Return Convert.ToUInt64(binerrotasikiri, 2) End Function
Function rotasikanan(ByVal input As Long, ByVal count As Integer, ByVal bit As Integer) As Long
Dim biner As String = desimal2biner(input, bit)
Dim binerrotasikanan As String = biner.Substring(biner.Length - count, count) + biner.Substring(0, biner.Length - count)
Return Convert.ToUInt64(binerrotasikanan, 2) End Function
Function dectohex(ByVal dec As Long) As String Dim sHexValue As String = Hex$(dec) If (sHexValue.Length < 8) Then
For i As Integer = 1 To 8 - sHexValue.Length sHexValue = "0" + sHexValue
Next End If
Return sHexValue End Function
Function hextodec(ByVal hex As String) As BigInteger Return Convert.ToInt64(hex, 16)
End Function
Function hextostring(ByVal hex As String) As String Dim sb As New StringBuilder
For x = 0 To hex.Length - 1 Step 2 Dim k As String = hex.Substring(x, 2)
sb.Append(System.Convert.ToChar(System.Convert.ToUInt32(k, 16))) Next
Return sb.ToString End Function
Function stringtohex(ByVal input As String) As String Dim a As String = input
Dim temp As String = "" Dim temp2 As String = "" Dim sb As New StringBuilder Dim hex_string As String = "" For x As Integer = 1 To Len(a) temp = Mid(a, x, 1)
temp2 = System.Convert.ToString(Asc(temp), 2) 'mengkonversi string langsung ke bitnya
hex_string = Hex(Convert.ToInt32(temp2, 2)) If (hex_string.Length < 2) Then
hex_string = "0" + hex_string End If
sb.Append(hex_string) Next
Return sb.ToString End Function
Function Bin_To_Dec(ByVal Bin As String) As String 'function to convert a binary number to decimal
Dim dec As Double = Nothing Dim length As Integer = Len(Bin) Dim temp As Integer = Nothing Dim x As Integer = Nothing For x = 1 To length
temp = Val(Mid(Bin, length, 1)) length = length - 1
If temp <> "0" Then dec += (2 ^ (x - 1)) End If
Next Return dec End Function
Function index2x(ByVal index As BigInteger, ByVal width As BigInteger) 'mencari pixel x
Function index2y(ByVal index As BigInteger, ByVal width As BigInteger) 'mencari pixel y
Return (index - (index Mod width)) / width End Function
Function dec_to_bin(ByVal dec As Integer) As String ' function to convert decimal to binary
Dim temp As String = Convert.ToString(dec, 2)
If (Len(temp) < 8) Then ' jika pjng bitnya kurang dari 8
While (Len(temp) < 8) ' selama pnjg bit kurang dr 8 tambahkan 0 ex: 1010 -> 00001010
temp = "0" + temp End While
End If Return temp End Function
'tab encrypt and embed
'==================================================
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
OpenFileDialog1.Filter = "Text Files (*.txt,*.docx,*.doc,*.rtf)|*.txt;*.docx;*.doc;*.rtf"
If OpenFileDialog1.ShowDialog() = DialogResult.OK Then
If Not String.IsNullOrEmpty(OpenFileDialog1.FileName) Then
Dim pathfile, ext, filename As String
pathfile =
System.IO.Path.GetDirectoryName(OpenFileDialog1.FileName)
filename = System.IO.Path.GetFileName(OpenFileDialog1.FileName) ext = System.IO.Path.GetExtension(OpenFileDialog1.FileName) If (ext = ".docx" Or ext = ".doc" Or ext = ".rtf") Then
Dim wdApp As New Word.Application
Dim wdDoc As New Word.Document
wdDoc = wdApp.Documents.Open(OpenFileDialog1.FileName)
Dim myText As String = wdDoc.Range.Text
RichTextBox1.Text = myText
Label13.Text = RichTextBox1.Text.Length wdApp.Quit()
Else
RichTextBox1.Text =
System.IO.File.ReadAllText(OpenFileDialog1.FileName) End If
End If End If End Sub
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
OpenFileDialog1.Filter = "Image Files (*.jpeg,*.bmp,*.png,*.jpg)|*.jpeg;*.bmp;*.png;*.jpg"
OpenFileDialog1.FilterIndex = 1 Dim filepath, filename As String
filepath = System.IO.Path.GetDirectoryName(OpenFileDialog1.FileName) filename = System.IO.Path.GetFileName(OpenFileDialog1.FileName) If OpenFileDialog1.ShowDialog() = DialogResult.OK Then
If Not String.IsNullOrEmpty(OpenFileDialog1.FileName) Then PictureBox1.Image = Image.FromFile(OpenFileDialog1.FileName) Dim data As Bitmap = New Bitmap(PictureBox1.Image)
panjang_gambar.Text = data.Width tinggi_gambar.Text = data.Height Else
End If End If End Sub
If PictureBox1.Image IsNot Nothing Then
SaveFileDialog1.Filter = "Image Files (*.jpeg)|*.jpeg"
If SaveFileDialog1.ShowDialog =
System.Windows.Forms.DialogResult.OK Then
PictureBox1.Image.Save(SaveFileDialog1.FileName) End If
End If
' save the image to the desktop End Sub
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
If String.IsNullOrEmpty(password.Text) Then MsgBox("Password Harus Diisi!")
ElseIf PictureBox1.Image Is Nothing Or RichTextBox1.Text = "" Then MsgBox("teks atau gambar belum ada")
Else Try
' RC5 32/12/16
Dim plaintext As String = stringtohex(RichTextBox1.Text) Dim pass As String = stringtohex(password.Text)
Dim x As Integer
Dim watch As Stopwatch = Stopwatch.StartNew()
'Padding Time
'================================================== 'Padding password
If (pass.Length Mod 32 <> 0) Then Dim sisa = 32 - pass.Length For x = 0 To sisa - 1 pass = pass + "0" Next
End If
'================================================== 'Padding plaintext
'================================================== If (plaintext.Length < 16) Then
Dim sisa = 16 - plaintext.Length For x = 0 To sisa - 1
plaintext = plaintext + "0" Next
Else
If (plaintext.Length Mod 8 <> 0) Then Dim sisa = 8 - plaintext.Length Mod 8 For x = 0 To sisa - 1
plaintext = plaintext + "0" Next
End If End If
'Pembuatan Array S
'================================================== S(0) = Pw
Dim i As Integer For i = 1 To t - 1
S(i) = (S(i - 1) + Qw) And 4294967295 Next
'================================================== 'Pembuatan array L
'================================================== Dim j As Integer
For i = 0 To 3 Step 1
Dim backward As String = "" For j = 0 To 3 Step 1
backward &= pass.Substring((i * 8) + (6 - (j * 2)), 2) Next
L(i) = hextodec(backward) Next
'================================================== j = 0
i = 0
Dim A As BigInteger = 0 Dim B As BigInteger = 0
For y As Integer = 1 To 3 * Math.Max(t, c)
S(i) = rotasikiri((S(i) + A + B) And 4294967295, 3, 32) A = S(i)
L(j) = rotasikiri((L(j) + A + B) And 4294967295, (A + B) Mod 32, 32)
B = L(j)
i = (i + 1) Mod t j = (j + 1) Mod c Next
'================================================== 'ENCRYPTION
'================================================== Dim ciphertext As String = ""
A = (hextodec(plaintext.Substring(0, 8)) + S(0)) And 4294967295 B = (hextodec(plaintext.Substring(8, 8)) + S(1)) And 4294967295 For i = 1 To round
A = (rotasikiri((A Xor B), B Mod 32, 32) + S(2 * i)) And 4294967295
B = (rotasikiri((B Xor A), A Mod 32, 32) + S(2 * i + 1)) And 4294967295
Next
ciphertext += dectohex(A) 'jika lebih dari 32 bit If plaintext.Length > 16 Then
For y As Integer = 1 To (plaintext.Length / 8 - 2) A = (B + S(0)) And 4294967295
B = (hextodec(plaintext.Substring(16 + (8 * (y - 1)), 8)) + S(1)) And 4294967295
For i = 1 To round
A = (rotasikiri((A Xor B), B Mod 32, 32) + S(2 * i)) And 4294967295
B = (rotasikiri((B Xor A), A Mod 32, 32) + S(2 * i + 1)) And 4294967295
Next
ciphertext += dectohex(A) Next
End If
ciphertext += dectohex(B)
'================================================== ' Embedding Time
'==================================================
Dim plainbit As String = string_to_bit(ciphertext) Dim img As Bitmap = New Bitmap(PictureBox1.Image) Dim Color As Color
Dim panjang, lebar, pixelx, pixely As BigInteger Dim temp As String = ""
panjang = Val(panjang_gambar.Text) lebar = Val(tinggi_gambar.Text)
Dim listAwal As New ArrayList Dim listRandom As New ArrayList
For i = 0 To plainbit.Length - 1 '(panjang * (lebar - 1)) - 1 ' merandom sebanyak pixel kemudian dimasukkan ke array
listAwal.Add(i) Next
Dim z1 As BigInteger = 1
Dim m1 As BigInteger = Math.Pow(2, 32) Dim a1 As BigInteger = 1664525
Dim c1 As BigInteger = 1013904223
For i = 0 To ((plainbit.Length - (plainbit.Length Mod 3) + 3) / 3) - 1 'Ini sudah N layer(plainbit.length) -> M pixel
z1 = (a1 * z1 + c1) Mod m1
Dim indexnow As Integer = Math.Floor((Double.Parse(z1.ToString()) / Double.Parse(m1.ToString())) * listAwal.Count)
Next
Dim RGB(3) As Byte
For i = 0 To ((plainbit.Length - (plainbit.Length Mod 3) + (Math.Min(1, (plainbit.Length Mod 3)) * 3)) / 3) - 1
pixelx =
index2x(BigInteger.Parse(listRandom(i).ToString()), panjang)
pixely =
index2y(BigInteger.Parse(listRandom(i).ToString()), panjang) Color = img.GetPixel(pixelx, pixely) Dim LayerValue As Byte
Dim posisi_layer As Byte = 0 RGB(0) = Color.R
RGB(1) = Color.G RGB(2) = Color.B
While posisi_layer + i * 3 < plainbit.Length And posisi_layer < 3
temp = Integer.Parse(plainbit.Substring(i * 3 + posisi_layer, 1))
If (posisi_layer = 0) Then 'R LayerValue = Color.R
ElseIf (posisi_layer = 1) Then 'G LayerValue = Color.G
ElseIf (posisi_layer = 2) Then 'B LayerValue = Color.B
End If 'LSB
If (LayerValue Mod 2 = 1) Then '1
If (temp = 1) Then '1
Else '0
LayerValue = LayerValue - 1 End If
Else '0
If (temp = 1) Then '1
LayerValue = LayerValue + 1 Else
'0 End If End If
RGB(posisi_layer) = LayerValue posisi_layer = posisi_layer + 1 End While
img.SetPixel(pixelx, pixely, Color.FromArgb(RGB(0), RGB(1), RGB(2)))
Next
'Memasukkan Panjang ciphertext ke dalam pixel-pixel di layer B '==================================================
x = 0
Dim penanda As String = dec_to_bin(ciphertext.Length) + "0"
Do
penanda = penanda + "1" x += 1
Loop Until x = Len(dec_to_bin(ciphertext.Length))
For i = 1 To Len(penanda)
Color = img.GetPixel(panjang - i, lebar - 1) Dim pixbit4 As String = dec_to_bin(Val(Color.B))
Dim change4 As String = pixbit4.Substring(0, pixbit4.Length - 1) & penanda.Substring(penanda.Length - i, 1)
img.SetPixel(panjang - i, lebar - 1, Color.FromArgb(Color.R, Color.G, Bin_To_Dec(change4)))
Next
Label9.Text = watch.Elapsed.TotalMilliseconds MsgBox("Proses Selesai")
Catch ex As Exception
MsgBox("Cover Image Kurang Besar") End Try
End If
End Sub
Private Sub Button8_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button8.Click
If RichTextBox3.Text = RichTextBox5.Text Then MsgBox("sama")
Else
Dim s1 As String Dim s2 As String Dim s3 As String
s1 = RichTextBox3.Text s2 = RichTextBox5.Text s3 = ""
For i As Integer = 0 To s1.Length - 1
If (s1.Substring(i, 1) <> s2.Substring(i, 1)) Then
s3 = s3 & s1.Substring(i, 1) & " " & string_to_bit(s1.Substring(i, 1)) & "->" & s2.Substring(i, 1) & " " & string_to_bit(s2.Substring(i, 1)) & vbNewLine
End If Next
RichTextBox5.Text = "" RichTextBox5.Text = s3 End If
End Sub
'================================================== 'tab extract and decrypt
'==================================================
Private Sub Button6_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button6.Click
OpenFileDialog1.Filter = "Image Files (*.jpeg,*.bmp,*.png,*.jpg)|*.jpeg;*.bmp;*.png;*.jpg"
OpenFileDialog1.FilterIndex = 1 Dim filepath, filename As String
filepath = System.IO.Path.GetDirectoryName(OpenFileDialog1.FileName) filename = System.IO.Path.GetFileName(OpenFileDialog1.FileName) If OpenFileDialog1.ShowDialog() = DialogResult.OK Then
If Not String.IsNullOrEmpty(OpenFileDialog1.FileName) Then PictureBox2.Image = Image.FromFile(OpenFileDialog1.FileName) Dim data As Bitmap = New Bitmap(PictureBox2.Image)
Else End If End If End Sub
Private Sub Button5_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button5.Click
If RichTextBox1.Text IsNot Nothing Then SaveFileDialog1.DefaultExt = "*.txt"
SaveFileDialog1.Filter = "Text Files (*.txt)|*.txt"
If SaveFileDialog1.ShowDialog() =
System.Windows.Forms.DialogResult.OK And (SaveFileDialog1.FileName.Length) > 0 Then
RichTextBox2.SaveFile(SaveFileDialog1.FileName, RichTextBoxStreamType.UnicodePlainText)
End If End If End Sub
Private Sub Button7_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button7.Click
Dim ciphertext As String = ""
If String.IsNullOrEmpty(password2.Text) Then MsgBox("Password Belum Diisi")
ElseIf PictureBox2.Image Is Nothing Then MsgBox("stego image belum ada") Else
'==================================================
Dim img As Bitmap = New Bitmap(PictureBox2.Image) Dim pixbit5 As String
Dim batas As Integer Dim penanda As String = "" Dim Color As Color
Dim panjang, lebar As BigInteger panjang = img.Width
lebar = img.Height
Dim watch As Stopwatch = Stopwatch.StartNew()
'Pengambilan Panjang ciphertext dari pixel2 di layer B '================================================== Dim r = 0
Do
r += 1
Color = img.GetPixel(panjang - r, lebar - 1) pixbit5 = dec_to_bin(Val(Color.B))
Loop While pixbit5.Substring(pixbit5.Length - 1, 1) <> 0
Dim y = 0 batas = r Do
r += 1
Color = img.GetPixel(panjang - r, lebar - 1) pixbit5 = dec_to_bin(Val(Color.B))
penanda = pixbit5.Substring(pixbit5.Length - 1, 1) + penanda y += 1
Loop Until y = batas - 1
'================================================== Dim len_in_bit As Integer = Val(Bin_To_Dec(penanda)) * 8 Dim pixelx, pixely As BigInteger
Dim i As Integer
Dim listAwal As New ArrayList Dim listRandom As New ArrayList
For i = 0 To len_in_bit - 1 ' merandom sebanyak pixel kemudian dimasukkan ke array
listAwal.Add(i) Next
Dim z1 As BigInteger = 1
Dim m1 As BigInteger = Math.Pow(2, 32) Dim a1 As BigInteger = 1664525
Dim c1 As BigInteger = 1013904223
For i = 0 To ((len_in_bit - (len_in_bit Mod 3) + 3) / 3) - 1 'Ini sudah N layer(plainbit.length) -> M pixel
z1 = (a1 * z1 + c1) Mod m1
Dim indexnow As Integer =
Math.Floor((Double.Parse(z1.ToString()) / Double.Parse(m1.ToString())) * listAwal.Count)
listRandom.Add(listAwal(indexnow)) listAwal.RemoveAt(indexnow) Next
Dim RGB(3) As Byte
Dim kumpulanBit As String = ""
For i = 0 To ((len_in_bit - (len_in_bit Mod 3) + 3) / 3) - 1
pixelx = index2x(BigInteger.Parse(listRandom(i).ToString()), panjang)
pixely = index2y(BigInteger.Parse(listRandom(i).ToString()), panjang)
Color = img.GetPixel(pixelx, pixely) Dim posisi_layer As Byte = 0
RGB(0) = Color.R RGB(1) = Color.G RGB(2) = Color.B
posisi_layer = posisi_layer + 1 End While
Next
ciphertext &= bit_to_string(kumpulanBit)
'================================================== 'Pembuatan Array S
'================================================== Dim pass As String = stringtohex(password2.Text) S(0) = Pw
For i = 1 To t - 1
S(i) = (S(i - 1) + Qw) And 4294967295 Next
'Padding Time
'================================================== 'Padding password
If (pass.Length Mod 32 <> 0) Then Dim sisa = 32 - pass.Length For x = 0 To sisa - 1 pass = pass + "0" Next
End If
'==================================================
'Pembuatan array L
'================================================== Dim j As Integer
For i = 0 To 3 Step 1
Dim backward As String = "" For j = 0 To 3 Step 1
backward &= pass.Substring((i * 8) + (6 - (j * 2)), 2) Next
L(i) = hextodec(backward) Next
' MsgBox("lewat")
'==================================================
'Pencampuran Array L dan S
'================================================== j = 0
i = 0
Dim A As BigInteger = 0 Dim B As BigInteger = 0
For y = 1 To 3 * Math.Max(t, c)
S(i) = rotasikiri((S(i) + A + B) And 4294967295, 3, 32) A = S(i)
L(j) = rotasikiri((L(j) + A + B) And 4294967295, (A + B) Mod 32, 32)
B = L(j)
i = (i + 1) Mod t j = (j + 1) Mod c Next
'==================================================
'Proses Dekripsi ciphertext menjadi plaintext '================================================== Dim plaintext As String = ""
B = hextodec(ciphertext.Substring(ciphertext.Length - 8, 8)) And 4294967295
A = hextodec(ciphertext.Substring(ciphertext.Length - 16, 8)) And 4294967295
For i = round To 1 Step -1
' RichTextBox1.Text &= dectohex((2 * i + 1)) & vbNewLine
B = (rotasikanan((B - S(2 * i + 1) And 4294967295), A Mod 32, 32) Xor A)
A = (rotasikanan((A - S(2 * i) And 4294967295), B Mod 32, 32) Xor B)
' RichTextBox1.Text &= "A : " & dectohex(A) & " B : " & dectohex(B) & vbNewLine
Next
A = (A - S(0)) And 4294967295 plaintext += dectohex(B) 'jika ciphertext > 16
If ciphertext.Length > 16 Then Dim z = 24
For y = 1 To (ciphertext.Length / 8 - 2) B = A
A = hextodec(ciphertext.Substring(ciphertext.Length - z, 8))
For i = round To 1 Step -1
B = (rotasikanan((B - S(2 * i + 1) And 4294967295), A Mod 32, 32) Xor A)
A = (rotasikanan((A - S(2 * i) And 4294967295), B Mod 32, 32) Xor B)
Next
B = B - S(1) And 4294967295 A = A - S(0) And 4294967295 z += 8
plaintext = dectohex(B) + plaintext Next
End If
plaintext = dectohex(A) + plaintext
RichTextBox2.Text &= hextostring(plaintext) Button5.Visible = True
watch.Stop()
Label20.Text = watch.Elapsed.TotalMilliseconds MsgBox("Proses Selesai")
'================================================== End If
End Sub
'==================================================
'tab compare
'==================================================
Private Sub Button9_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button9.Click
OpenFileDialog1.Filter = "Image Files (*.jpeg,*.bmp,*.png,*.jpg)|*.jpeg;*.bmp;*.png;*.jpg"
OpenFileDialog1.FilterIndex = 1 Dim filepath, filename As String
filepath = System.IO.Path.GetDirectoryName(OpenFileDialog1.FileName) filename = System.IO.Path.GetFileName(OpenFileDialog1.FileName) If OpenFileDialog1.ShowDialog() = DialogResult.OK Then
If Not String.IsNullOrEmpty(OpenFileDialog1.FileName) Then PictureBox4.Image = Image.FromFile(OpenFileDialog1.FileName) Dim data As Bitmap = New Bitmap(PictureBox4.Image)
width1.Text = "Width : " & data.Width height1.Text = "Height : " & data.Height Else
End If End If End Sub
Private Sub Button10_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button10.Click
OpenFileDialog1.Filter = "Image Files (*.jpeg,*.bmp,*.png,*.jpg)|*.jpeg;*.bmp;*.png;*.jpg"
OpenFileDialog1.FilterIndex = 1 Dim filepath, filename As String
filepath = System.IO.Path.GetDirectoryName(OpenFileDialog1.FileName) filename = System.IO.Path.GetFileName(OpenFileDialog1.FileName) If OpenFileDialog1.ShowDialog() = DialogResult.OK Then
If Not String.IsNullOrEmpty(OpenFileDialog1.FileName) Then PictureBox5.Image = Image.FromFile(OpenFileDialog1.FileName) Dim data As Bitmap = New Bitmap(PictureBox5.Image)
width2.Text = "Width : " & data.Width height2.Text = "Height : " & data.Height Else
Private Sub Button11_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button11.Click
If PictureBox4.Image Is Nothing Or PictureBox5.Image Is Nothing Then MsgBox("Cover Image atau Stego Image Kosong")
Else
Dim nilaimse As Double = 0
Dim img As Bitmap = New Bitmap(PictureBox4.Image) Dim img2 As Bitmap = New Bitmap(PictureBox5.Image) Dim Color As Color
Dim color2 As Color
If img.Width = img2.Width And img.Height = img2.Height Then For i As Integer = 0 To img.Width - 1
For j As Integer = 0 To img.Height - 1 Color = img.GetPixel(i, j)
color2 = img2.GetPixel(i, j)
nilaimse += Math.Pow(Integer.Parse(Color.R) - Integer.Parse(color2.R), 2) _
+ Math.Pow(Integer.Parse(Color.G) - Integer.Parse(color2.G), 2) _
+ Math.Pow(Integer.Parse(Color.B) - Integer.Parse(color2.B), 2)
Next Next
nilaimse = nilaimse / (img.Width * img.Height * 3) mse.Text = nilaimse.ToString
Dim nilaipsnr As Double = 10 * Math.Log10(255 * 255 / nilaimse) psnr.Text = (nilaipsnr & " dB")
If nilaipsnr < 30 Then ' quality.Text = "Low" Else
' quality.Text = "High" End If
Else
MsgBox("Ukuran Kedua Gambar Tidak Sama") End If
End If End Sub
'==================================================
Private Sub RichTextBox1_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles RichTextBox1.TextChanged
Label13.Text = RichTextBox1.Text.Length End Sub
