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Added median filter but for some reason it always trigger pointer exceptions

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This commit is contained in:
Rohmer Maxime
2022-09-14 19:52:34 +02:00
parent 15a69c20ae
commit 6b392ab1e7
5 changed files with 198 additions and 41 deletions
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AgraV2/AgraV2.csproj
+1
View File
@@ -49,6 +49,7 @@
<ItemGroup>
<Compile Include="Effect.cs" />
<Compile Include="EffectGrayScale.cs" />
<Compile Include="EffectMedianFilter.cs" />
<Compile Include="Form1.cs">
<SubType>Form</SubType>
</Compile>
AgraV2/Effect.cs
+5 -1
View File
@@ -30,7 +30,11 @@ namespace AgraV2
//I start and stop it so the child can just always use Restart()
Chrono.Start();Chrono.Stop();
}
public virtual void populatePannel()
{
//For the childs to explore
ToolBox.Controls.Clear();
}
public virtual Bitmap[] apply(Bitmap inputBmp)
{
return new Bitmap[] { inputBmp };
AgraV2/EffectMedianFilter.cs
+143
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@@ -0,0 +1,143 @@
using System;
using System.Collections.Generic;
using System.Drawing;
using System.Drawing.Imaging;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace AgraV2
{
internal class EffectMedianFilter : Effect
{
private readonly object balancelock = new object();
private int _Radius;
public int Radius { get => _Radius; set => _Radius = value; }
public EffectMedianFilter(string name, Panel toolBox) : base(name, toolBox)
{
//This is just the default value
Radius = 1;
}
public override void populatePannel()
{
Label label = new Label();
label.Text = "Radius : ";
NumericUpDown nup = new NumericUpDown();
nup.Minimum = 1;
nup.Maximum = 100;
nup.Increment = 1;
nup.ValueChanged += nup_ValueChanged;
nup.Location = new Point(label.Location.X + label.Width,label.Location.Y);
ToolBox.Controls.Add(label);
ToolBox.Controls.Add(nup);
}
private void nup_ValueChanged(object sender, EventArgs e)
{
if (sender is NumericUpDown)
{
NumericUpDown nup = (NumericUpDown)sender;
Radius = (int)nup.Value;
}
}
public override Bitmap[] apply(Bitmap inputBmp)
{
Bitmap[] result = new Bitmap[] { medianFilter(inputBmp) };
return result;
}
public unsafe Bitmap medianFilter(Bitmap inputBmp)
{
Chrono.Restart();
Size imgSize = new Size(inputBmp.Width,inputBmp.Height);
Bitmap result = new Bitmap(imgSize.Width, imgSize.Height);
BitmapData resultData = result.LockBits(new Rectangle(0, 0, imgSize.Width, imgSize.Height), ImageLockMode.ReadWrite, inputBmp.PixelFormat);
BitmapData inputData = inputBmp.LockBits(new Rectangle(0, 0, imgSize.Width, imgSize.Height), ImageLockMode.ReadWrite, inputBmp.PixelFormat);
int bytesPerPixel = Bitmap.GetPixelFormatSize(inputBmp.PixelFormat) / 8;
int byteCount = resultData.Stride * inputBmp.Height;
int offset = resultData.Stride - bytesPerPixel * imgSize.Width;
lock (balancelock)
{
byte* resultStartPx = (byte*)resultData.Scan0.ToPointer();
byte* resultCursor = resultStartPx;
byte* originalStartPx = (byte*)inputData.Scan0.ToPointer();
byte* originalCursor = originalStartPx;
for (int y = 0; y < inputBmp.Height; y++)
{
for (int x = 0; x < imgSize.Width; x++)
{
//We wont process border pixels
if (x > Radius && y > Radius && x < imgSize.Width - Radius && y < inputBmp.Height - Radius)
{
List<int> Blues = new List<int>();
List<int> Greens = new List<int>();
List<int> Reds = new List<int>();
List<Point> surroundingPixels = getSurroundingPixels(new Point(x, y), 2, imgSize.Width, inputBmp.Height);
foreach (Point pixel in surroundingPixels)
{
int relativePosition = (pixel.X) * bytesPerPixel + (pixel.Y * (imgSize.Width * bytesPerPixel + offset));
byte* address = (byte*)(relativePosition + originalStartPx);
Blues.Add(address[0]);
Greens.Add(address[1]);
Reds.Add(address[2]);
}
Blues.Sort();
Greens.Sort();
Reds.Sort();
resultCursor[0] = (byte)Blues[Blues.Count / 2];
resultCursor[1] = (byte)Greens[Greens.Count / 2];
resultCursor[2] = (byte)Reds[Reds.Count / 2];
}
originalCursor += bytesPerPixel;
resultCursor += bytesPerPixel;
}
//Taking care of the offset
originalCursor += offset;
resultCursor += offset;
}
}
result.UnlockBits(resultData);
inputBmp.UnlockBits(inputData);
Chrono.Stop();
ProcessingDuration.Add(Chrono.ElapsedMilliseconds / 1000.0);
return result;
}
public List<Point> getSurroundingPixels(Point centerPoint, int Radius, int imageWidth, int imageHeight)
{
List<Point> result = new List<Point>();
int width = (Radius * 2 + 1);
Point cursor = centerPoint;
//we place the cursor on the top left of the matrix
cursor = new Point(cursor.X - Radius, cursor.Y - Radius);
for (int y = 0; y < width; y++)
{
//This scans top to bottom
for (int x = 0; x < width; x++)
{
//This scans left to right
result.Add(cursor);
cursor = new Point(cursor.X + 1, cursor.Y);
}
cursor = new Point(cursor.X - (Radius * 2 + 1), cursor.Y + 1);
}
return result;
}
}
}
AgraV2/Form1.Designer.cs
Generated
+40 -39
View File
@@ -31,12 +31,15 @@
this.pbxOriginal = new System.Windows.Forms.PictureBox();
this.gpbx1 = new System.Windows.Forms.GroupBox();
this.groupBox2 = new System.Windows.Forms.GroupBox();
this.lblTimer1 = new System.Windows.Forms.Label();
this.btnDowload1 = new System.Windows.Forms.Button();
this.pbxResult1 = new System.Windows.Forms.PictureBox();
this.groupBox3 = new System.Windows.Forms.GroupBox();
this.lblTimer2 = new System.Windows.Forms.Label();
this.btnDownload2 = new System.Windows.Forms.Button();
this.pbxResult2 = new System.Windows.Forms.PictureBox();
this.groupBox4 = new System.Windows.Forms.GroupBox();
this.lblTimer3 = new System.Windows.Forms.Label();
this.btnDownload3 = new System.Windows.Forms.Button();
this.pbxResult3 = new System.Windows.Forms.PictureBox();
this.gpbxFiles = new System.Windows.Forms.GroupBox();
@@ -47,9 +50,6 @@
this.lsbEffects = new System.Windows.Forms.ListBox();
this.groupBox6 = new System.Windows.Forms.GroupBox();
this.pnlEffectToolbox = new System.Windows.Forms.Panel();
this.lblTimer1 = new System.Windows.Forms.Label();
this.lblTimer2 = new System.Windows.Forms.Label();
this.lblTimer3 = new System.Windows.Forms.Label();
((System.ComponentModel.ISupportInitialize)(this.pbxOriginal)).BeginInit();
this.gpbx1.SuspendLayout();
this.groupBox2.SuspendLayout();
@@ -95,6 +95,18 @@
this.groupBox2.TabStop = false;
this.groupBox2.Text = "Result 1";
//
// lblTimer1
//
this.lblTimer1.AutoSize = true;
this.lblTimer1.BackColor = System.Drawing.Color.Black;
this.lblTimer1.ForeColor = System.Drawing.Color.Green;
this.lblTimer1.Location = new System.Drawing.Point(6, 25);
this.lblTimer1.Name = "lblTimer1";
this.lblTimer1.Size = new System.Drawing.Size(54, 20);
this.lblTimer1.TabIndex = 2;
this.lblTimer1.Text = "0.00s";
this.lblTimer1.Visible = false;
//
// btnDowload1
//
this.btnDowload1.Location = new System.Drawing.Point(44, 247);
@@ -127,6 +139,18 @@
this.groupBox3.TabStop = false;
this.groupBox3.Text = "Result 2";
//
// lblTimer2
//
this.lblTimer2.AutoSize = true;
this.lblTimer2.BackColor = System.Drawing.Color.Black;
this.lblTimer2.ForeColor = System.Drawing.Color.Green;
this.lblTimer2.Location = new System.Drawing.Point(6, 25);
this.lblTimer2.Name = "lblTimer2";
this.lblTimer2.Size = new System.Drawing.Size(54, 20);
this.lblTimer2.TabIndex = 3;
this.lblTimer2.Text = "0.00s";
this.lblTimer2.Visible = false;
//
// btnDownload2
//
this.btnDownload2.Location = new System.Drawing.Point(44, 247);
@@ -159,6 +183,18 @@
this.groupBox4.TabStop = false;
this.groupBox4.Text = "Result3";
//
// lblTimer3
//
this.lblTimer3.AutoSize = true;
this.lblTimer3.BackColor = System.Drawing.Color.Black;
this.lblTimer3.ForeColor = System.Drawing.Color.Green;
this.lblTimer3.Location = new System.Drawing.Point(6, 25);
this.lblTimer3.Name = "lblTimer3";
this.lblTimer3.Size = new System.Drawing.Size(54, 20);
this.lblTimer3.TabIndex = 4;
this.lblTimer3.Text = "0.00s";
this.lblTimer3.Visible = false;
//
// btnDownload3
//
this.btnDownload3.Location = new System.Drawing.Point(44, 247);
@@ -237,6 +273,7 @@
this.lsbEffects.Name = "lsbEffects";
this.lsbEffects.Size = new System.Drawing.Size(188, 204);
this.lsbEffects.TabIndex = 4;
this.lsbEffects.SelectedIndexChanged += new System.EventHandler(this.lsbEffects_SelectedIndexChanged);
//
// groupBox6
//
@@ -255,42 +292,6 @@
this.pnlEffectToolbox.Size = new System.Drawing.Size(188, 250);
this.pnlEffectToolbox.TabIndex = 2;
//
// lblTimer1
//
this.lblTimer1.AutoSize = true;
this.lblTimer1.BackColor = System.Drawing.Color.Black;
this.lblTimer1.ForeColor = System.Drawing.Color.Green;
this.lblTimer1.Location = new System.Drawing.Point(6, 25);
this.lblTimer1.Name = "lblTimer1";
this.lblTimer1.Size = new System.Drawing.Size(54, 20);
this.lblTimer1.TabIndex = 2;
this.lblTimer1.Text = "0.00s";
this.lblTimer1.Visible = false;
//
// lblTimer2
//
this.lblTimer2.AutoSize = true;
this.lblTimer2.BackColor = System.Drawing.Color.Black;
this.lblTimer2.ForeColor = System.Drawing.Color.Green;
this.lblTimer2.Location = new System.Drawing.Point(6, 25);
this.lblTimer2.Name = "lblTimer2";
this.lblTimer2.Size = new System.Drawing.Size(54, 20);
this.lblTimer2.TabIndex = 3;
this.lblTimer2.Text = "0.00s";
this.lblTimer2.Visible = false;
//
// lblTimer3
//
this.lblTimer3.AutoSize = true;
this.lblTimer3.BackColor = System.Drawing.Color.Black;
this.lblTimer3.ForeColor = System.Drawing.Color.Green;
this.lblTimer3.Location = new System.Drawing.Point(6, 25);
this.lblTimer3.Name = "lblTimer3";
this.lblTimer3.Size = new System.Drawing.Size(54, 20);
this.lblTimer3.TabIndex = 4;
this.lblTimer3.Text = "0.00s";
this.lblTimer3.Visible = false;
//
// Form1
//
this.AutoScaleDimensions = new System.Drawing.SizeF(9F, 20F);
AgraV2/Form1.cs
+9 -1
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@@ -25,7 +25,7 @@ namespace AgraV2
{
effects = new List<Effect>();
effects.Add(new EffectGrayScale("GrayScale", pnlEffectToolbox));
effects.Add(new EffectMedianFilter("Median Filter", pnlEffectToolbox));
RefreshUi();
}
private void RefreshUi()
@@ -143,5 +143,13 @@ namespace AgraV2
{
DownloadImage(pbxResult3.Image);
}
private void lsbEffects_SelectedIndexChanged(object sender, EventArgs e)
{
if (lsbEffects.SelectedIndex >= 0)
{
effects[lsbEffects.SelectedIndex].populatePannel();
}
}
}
}