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Sign in Pixellate
Pixellation means displaying additional pixels in an are to distort the shapes and curves of the displayed image and make the impression of bad resolution. It is very useful when you want to something (e.g. a face in the crime news) or there is something which is not supposed to be on the picture (e.g. the combination of a safe). You also have the options to adjust the width, height and size of the created pixels.
Properties
Important: You should study this article in order to find out how to setup your Windows Forms Application correctly.
PixelHeight: With this option we can set the height of the pixels.
PixelWidth: With this option we can set the width of the pixels.
PixelSize: With this option we can set the size of the pixels. It adjusts both the width and the height of the pixels
Figure 1 - Original image
Figure 2 - Modified image with pixellate effect
| Windows Form |
Windows forms version
MainForm.cs
using System;
using System.Windows.Forms;
using Ozeki.Camera;
using Ozeki.Media;
namespace ImageManipulation_WF
{
public partial class MainForm : Form
{
private ICamera _camera;
private DrawingImageProvider _imageProvider;
private MediaConnector _connector;
#region Initialize manipulation and filter
private ImageManipulation _manipulation;
private OzPixellate _filter;
#endregion
public MainForm()
{
InitializeComponent();
_connector = new MediaConnector();
_imageProvider = new DrawingImageProvider();
// Create video viewer UI control
// Bind the camera image to the UI control
videoViewer.SetImageProvider(_imageProvider);
_manipulation = new ImageManipulation();
_manipulation.Start();
_filter = new OzPixellate();
}
private void btn_Connect_Click(object sender, EventArgs e)
{
_camera = new WebCamera();
if (_camera == null) return;
_connector.Connect(_camera.VideoChannel, _manipulation);
_connector.Connect(_manipulation, _imageProvider);
_camera.Start();
videoViewer.Start();
}
private void btn_Add_Click(object sender, EventArgs e)
{
_manipulation.Add(_filter);
}
private void btn_Remove_Click(object sender, EventArgs e)
{
_manipulation.Remove(_filter);
}
private void ph_TrackScroll(object sender, EventArgs e)
{
var trackBar_ph = sender as TrackBar;
if (trackBar_ph != null)
{
var value = trackBar_ph.Value;
_filter.PixelHeight = value;
lb_height.Text = @"Pixel height: " + value;
}
}
private void pw_TrackScroll(object sender, EventArgs e)
{
var trackBar_pw = sender as TrackBar;
if (trackBar_pw != null)
{
var value = trackBar_pw.Value;
_filter.PixelWidth = value;
lb_width.Text = @"Pixel width: " + value;
}
}
private void ps_TrackScroll(object sender, EventArgs e)
{
var trackBar_ps = sender as TrackBar;
if (trackBar_ps != null)
{
var value = trackBar_ps.Value;
_filter.PixelSize = value;
lb_size.Text = @"Pixel size: " + value;
}
}
}
}
Code 1 Pixellate in C#
GUI
Windows forms version
MainForm.Designer.cs
namespace ImageManipulation_WF
{
partial class MainForm
{
///
/// Required designer variable.
///
private System.ComponentModel.IContainer components = null;
///
/// Clean up any resources being used.
///
/// true if managed resources should be disposed; otherwise, false.
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}
#region Windows Form Designer generated code
///
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
///
private void InitializeComponent()
{
this.videoViewer = new Ozeki.Media.VideoViewerWF();
this.btn_Connect = new System.Windows.Forms.Button();
this.trackBar_ph = new System.Windows.Forms.TrackBar();
this.trackBar_pw = new System.Windows.Forms.TrackBar();
this.trackBar_ps = new System.Windows.Forms.TrackBar();
this.lb_height = new System.Windows.Forms.Label();
this.lb_width = new System.Windows.Forms.Label();
this.lb_size = new System.Windows.Forms.Label();
this.btn_add = new System.Windows.Forms.Button();
this.btn_remove = new System.Windows.Forms.Button();
this.groupBox1 = new System.Windows.Forms.GroupBox();
((System.ComponentModel.ISupportInitialize)(this.trackBar_ph)).BeginInit();
((System.ComponentModel.ISupportInitialize)(this.trackBar_pw)).BeginInit();
((System.ComponentModel.ISupportInitialize)(this.trackBar_ps)).BeginInit();
this.groupBox1.SuspendLayout();
this.SuspendLayout();
//
// videoViewer
//
this.videoViewer.BackColor = System.Drawing.Color.Black;
this.videoViewer.FlipMode = Ozeki.Media.FlipMode.None;
this.videoViewer.FrameStretch = Ozeki.Media.FrameStretch.Uniform;
this.videoViewer.FullScreenEnabled = true;
this.videoViewer.Location = new System.Drawing.Point(12, 57);
this.videoViewer.Name = "videoViewer";
this.videoViewer.RotateAngle = 0;
this.videoViewer.Size = new System.Drawing.Size(471, 334);
this.videoViewer.TabIndex = 0;
this.videoViewer.Text = "videoViewerWF1";
//
// btn_Connect
//
this.btn_Connect.Location = new System.Drawing.Point(12, 12);
this.btn_Connect.Name = "btn_Connect";
this.btn_Connect.Size = new System.Drawing.Size(152, 26);
this.btn_Connect.TabIndex = 14;
this.btn_Connect.Text = "Connect to WebCamera";
this.btn_Connect.UseVisualStyleBackColor = true;
this.btn_Connect.Click += new System.EventHandler(this.btn_Connect_Click);
//
// trackBar_ph
//
this.trackBar_ph.Location = new System.Drawing.Point(113, 32);
this.trackBar_ph.Maximum = 32;
this.trackBar_ph.Minimum = 2;
this.trackBar_ph.Name = "trackBar_ph";
this.trackBar_ph.Size = new System.Drawing.Size(361, 45);
this.trackBar_ph.TabIndex = 15;
this.trackBar_ph.Value = 2;
this.trackBar_ph.Scroll += new System.EventHandler(this.ph_TrackScroll);
//
// trackBar_pw
//
this.trackBar_pw.Location = new System.Drawing.Point(113, 83);
this.trackBar_pw.Maximum = 32;
this.trackBar_pw.Minimum = 2;
this.trackBar_pw.Name = "trackBar_pw";
this.trackBar_pw.Size = new System.Drawing.Size(361, 45);
this.trackBar_pw.TabIndex = 16;
this.trackBar_pw.Value = 2;
this.trackBar_pw.Scroll += new System.EventHandler(this.pw_TrackScroll);
//
// trackBar_ps
//
this.trackBar_ps.Location = new System.Drawing.Point(113, 134);
this.trackBar_ps.Maximum = 32;
this.trackBar_ps.Minimum = 2;
this.trackBar_ps.Name = "trackBar_ps";
this.trackBar_ps.Size = new System.Drawing.Size(361, 45);
this.trackBar_ps.TabIndex = 17;
this.trackBar_ps.Value = 2;
this.trackBar_ps.Scroll += new System.EventHandler(this.ps_TrackScroll);
//
// lb_height
//
this.lb_height.AutoSize = true;
this.lb_height.Location = new System.Drawing.Point(6, 32);
this.lb_height.Name = "lb_height";
this.lb_height.Size = new System.Drawing.Size(64, 13);
this.lb_height.TabIndex = 18;
this.lb_height.Text = "Pixel height:";
//
// lb_width
//
this.lb_width.AutoSize = true;
this.lb_width.Location = new System.Drawing.Point(6, 83);
this.lb_width.Name = "lb_width";
this.lb_width.Size = new System.Drawing.Size(60, 13);
this.lb_width.TabIndex = 19;
this.lb_width.Text = "Pixel width:";
//
// lb_size
//
this.lb_size.AutoSize = true;
this.lb_size.Location = new System.Drawing.Point(6, 134);
this.lb_size.Name = "lb_size";
this.lb_size.Size = new System.Drawing.Size(53, 13);
this.lb_size.TabIndex = 20;
this.lb_size.Text = "Pixel size:";
//
// btn_add
//
this.btn_add.Location = new System.Drawing.Point(315, 14);
this.btn_add.Name = "btn_add";
this.btn_add.Size = new System.Drawing.Size(75, 23);
this.btn_add.TabIndex = 21;
this.btn_add.Text = "Add";
this.btn_add.UseVisualStyleBackColor = true;
this.btn_add.Click += new System.EventHandler(this.btn_Add_Click);
//
// btn_remove
//
this.btn_remove.Location = new System.Drawing.Point(408, 14);
this.btn_remove.Name = "btn_remove";
this.btn_remove.Size = new System.Drawing.Size(75, 23);
this.btn_remove.TabIndex = 22;
this.btn_remove.Text = "Remove";
this.btn_remove.UseVisualStyleBackColor = true;
this.btn_remove.Click += new System.EventHandler(this.btn_Remove_Click);
//
// groupBox1
//
this.groupBox1.Controls.Add(this.lb_size);
this.groupBox1.Controls.Add(this.lb_width);
this.groupBox1.Controls.Add(this.lb_height);
this.groupBox1.Controls.Add(this.trackBar_ps);
this.groupBox1.Controls.Add(this.trackBar_pw);
this.groupBox1.Controls.Add(this.trackBar_ph);
this.groupBox1.Location = new System.Drawing.Point(9, 407);
this.groupBox1.Name = "groupBox1";
this.groupBox1.Size = new System.Drawing.Size(483, 194);
this.groupBox1.TabIndex = 23;
this.groupBox1.TabStop = false;
this.groupBox1.Text = "Pixel settings";
//
// MainForm
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(501, 620);
this.Controls.Add(this.groupBox1);
this.Controls.Add(this.btn_remove);
this.Controls.Add(this.btn_add);
this.Controls.Add(this.btn_Connect);
this.Controls.Add(this.videoViewer);
this.Name = "MainForm";
this.Text = "Pixellate";
((System.ComponentModel.ISupportInitialize)(this.trackBar_ph)).EndInit();
((System.ComponentModel.ISupportInitialize)(this.trackBar_pw)).EndInit();
((System.ComponentModel.ISupportInitialize)(this.trackBar_ps)).EndInit();
this.groupBox1.ResumeLayout(false);
this.groupBox1.PerformLayout();
this.ResumeLayout(false);
}
#endregion
private Ozeki.Media.VideoViewerWF videoViewer;
private System.Windows.Forms.Button btn_Connect;
private System.Windows.Forms.TrackBar trackBar_ph;
private System.Windows.Forms.TrackBar trackBar_pw;
private System.Windows.Forms.TrackBar trackBar_ps;
private System.Windows.Forms.Label lb_height;
private System.Windows.Forms.Label lb_width;
private System.Windows.Forms.Label lb_size;
private System.Windows.Forms.Button btn_add;
private System.Windows.Forms.Button btn_remove;
private System.Windows.Forms.GroupBox groupBox1;
}
}
Code 2 Pixellate GUI in C#
Conclusion
With the help of this lecture you can successfully implement Pixellate effect with your C# camera application using the Ozeki Camera SDK.
Related Pages
FAQ
Below you can find the answers for the most frequently asked questions related to this topic:
-
What kind of developer environment is needed?
- Microsoft Visual Studio 2010
- Microsoft .Net Framework 4.0
- Internet connection
-
How can I get the URL of the camera?
You can get the URL from the producer of the camera.
-
I have not managed to build the solution. How to solve it?
- Please set the Target framework property of the project to .NET 4.0.
- You should add the OzekiSDK.dll to the references of the solution.
- Please import the missing classes.
More information
- Introduction to image manipulation
- How to implement brightness filter in C#
- How to create channel filtering in C#
- How to create contrast correction in C#
- How to implement gamma correction in C#
- How to implement greyscale effect in C#
- How to implement histogram equalization in C#
- How to accomplish rotate filter in C#
- How to accomplish invert colors in C#
- How to accomplish jitter in C#
- How to create mirror effect in C#
- How to accomplish pixellate in C#
- How to implement rotate channels in C#
- How to implement hue modifier in C#
- How to implement salt and pepper noise in C#
- How to create saturation correction in C#
- How to create sepia effect in C#
- How to implement sharpen in C#
- How to implement simple posterization in C#
- How to create water wave in C#
- How to implement YCbCr in C#
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