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Image Processing Lab in C#

, 13 Mar 2007
A tool and library for image processing
iplab_demo.zip
iplab_demo
AForge.dll
AForge.Imaging.chm
AForge.Imaging.dll
AForge.Math.dll
DockingToolbar.dll
iplab.exe
SourceGrid2.dll
SourceLibrary.dll
WeifenLuo.WinFormsUI.dll
iplab_src.zip
iplab_src
icons
about.gif
clone.gif
convolution.gif
copy.gif
cut.gif
disk.gif
fit_to_size.gif
folder_out.gif
fourier.gif
grayscale.gif
histogram_window.gif
levels.gif
morphology.gif
paste.gif
pie-chart.gif
resize.gif
rotate.gif
threshold.gif
view_1_1.gif
zoom_in.gif
zoom_out.gif
iplab
App.ico
banner.gif
column-chart.ico
Controls
Filters Forms
line-chart.ico
References
AForge.dll
AForge.Imaging.dll
AForge.Math.dll
DockingToolbar.dll
SourceGrid2.dll
SourceLibrary.dll
WeifenLuo.WinFormsUI.dll
Resources
arrow.bmp
harrow.cur
hmove.cur
Tools
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;

using AForge.Imaging;
using AForge.Imaging.Filters;

namespace IPLab
{
    /// <summary>
    /// Summary description for ResizeForm.
    /// </summary>
    public class ResizeForm : System.Windows.Forms.Form
    {
        private Size originalSize;
        private FilterResize filter = null;
        private bool updating = false;

        private System.Windows.Forms.RadioButton factorButton;
        private System.Windows.Forms.TextBox factorBox;
        private System.Windows.Forms.PictureBox pictureBox1;
        private System.Windows.Forms.RadioButton sizeButton;
        private System.Windows.Forms.Label label1;
        private System.Windows.Forms.TextBox widthBox;
        private System.Windows.Forms.Label label2;
        private System.Windows.Forms.TextBox heightBox;
        private System.Windows.Forms.PictureBox pictureBox2;
        private System.Windows.Forms.Label label3;
        private System.Windows.Forms.ComboBox methodCombo;
        private System.Windows.Forms.Button okButton;
        private System.Windows.Forms.Button cancelButton;
        private System.Windows.Forms.CheckBox ratioCheck;
        /// <summary>
        /// Required designer variable.
        /// </summary>
        private System.ComponentModel.Container components = null;

        // OriginalSize property
        public Size OriginalSize
        {
            get { return originalSize; }
            set { originalSize = value; }
        }
        // Filter property
        public IFilter Filter
        {
            get { return filter; }
        }

        // Constructor
        public ResizeForm( )
        {
            //
            // Required for Windows Form Designer support
            //
            InitializeComponent( );
        }

        /// <summary>
        /// Clean up any resources being used.
        /// </summary>
        protected override void Dispose( bool disposing )
        {
            if ( disposing )
            {
                if ( components != null )
                {
                    components.Dispose( );
                }
            }
            base.Dispose( disposing );
        }

        #region Windows Form Designer generated code
        /// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        private void InitializeComponent( )
        {
            this.factorButton = new System.Windows.Forms.RadioButton( );
            this.factorBox = new System.Windows.Forms.TextBox( );
            this.pictureBox1 = new System.Windows.Forms.PictureBox( );
            this.sizeButton = new System.Windows.Forms.RadioButton( );
            this.label1 = new System.Windows.Forms.Label( );
            this.widthBox = new System.Windows.Forms.TextBox( );
            this.label2 = new System.Windows.Forms.Label( );
            this.heightBox = new System.Windows.Forms.TextBox( );
            this.ratioCheck = new System.Windows.Forms.CheckBox( );
            this.pictureBox2 = new System.Windows.Forms.PictureBox( );
            this.label3 = new System.Windows.Forms.Label( );
            this.methodCombo = new System.Windows.Forms.ComboBox( );
            this.okButton = new System.Windows.Forms.Button( );
            this.cancelButton = new System.Windows.Forms.Button( );
            this.SuspendLayout( );
            // 
            // factorButton
            // 
            this.factorButton.Checked = true;
            this.factorButton.Location = new System.Drawing.Point( 10, 10 );
            this.factorButton.Name = "factorButton";
            this.factorButton.Size = new System.Drawing.Size( 100, 20 );
            this.factorButton.TabIndex = 0;
            this.factorButton.TabStop = true;
            this.factorButton.Text = "Resize &factor:";
            this.factorButton.CheckedChanged += new System.EventHandler( this.factorButton_CheckedChanged );
            // 
            // factorBox
            // 
            this.factorBox.Location = new System.Drawing.Point( 100, 10 );
            this.factorBox.Name = "factorBox";
            this.factorBox.TabIndex = 1;
            this.factorBox.Text = "";
            this.factorBox.TextChanged += new System.EventHandler( this.factorBox_TextChanged );
            // 
            // pictureBox1
            // 
            this.pictureBox1.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
            this.pictureBox1.Location = new System.Drawing.Point( 10, 40 );
            this.pictureBox1.Name = "pictureBox1";
            this.pictureBox1.Size = new System.Drawing.Size( 190, 2 );
            this.pictureBox1.TabIndex = 2;
            this.pictureBox1.TabStop = false;
            // 
            // sizeButton
            // 
            this.sizeButton.Location = new System.Drawing.Point( 10, 50 );
            this.sizeButton.Name = "sizeButton";
            this.sizeButton.Size = new System.Drawing.Size( 100, 20 );
            this.sizeButton.TabIndex = 2;
            this.sizeButton.Text = "Resize to &size";
            this.sizeButton.CheckedChanged += new System.EventHandler( this.sizeButton_CheckedChanged );
            // 
            // label1
            // 
            this.label1.Location = new System.Drawing.Point( 30, 78 );
            this.label1.Name = "label1";
            this.label1.Size = new System.Drawing.Size( 44, 14 );
            this.label1.TabIndex = 3;
            this.label1.Text = "&Width:";
            // 
            // widthBox
            // 
            this.widthBox.Enabled = false;
            this.widthBox.Location = new System.Drawing.Point( 100, 75 );
            this.widthBox.Name = "widthBox";
            this.widthBox.TabIndex = 4;
            this.widthBox.Text = "";
            this.widthBox.TextChanged += new System.EventHandler( this.widthBox_TextChanged );
            // 
            // label2
            // 
            this.label2.Location = new System.Drawing.Point( 30, 103 );
            this.label2.Name = "label2";
            this.label2.Size = new System.Drawing.Size( 60, 14 );
            this.label2.TabIndex = 5;
            this.label2.Text = "&Height:";
            // 
            // heightBox
            // 
            this.heightBox.Enabled = false;
            this.heightBox.Location = new System.Drawing.Point( 100, 100 );
            this.heightBox.Name = "heightBox";
            this.heightBox.TabIndex = 6;
            this.heightBox.Text = "";
            this.heightBox.TextChanged += new System.EventHandler( this.heightBox_TextChanged );
            // 
            // ratioCheck
            // 
            this.ratioCheck.Checked = true;
            this.ratioCheck.CheckState = System.Windows.Forms.CheckState.Checked;
            this.ratioCheck.Enabled = false;
            this.ratioCheck.Location = new System.Drawing.Point( 30, 130 );
            this.ratioCheck.Name = "ratioCheck";
            this.ratioCheck.Size = new System.Drawing.Size( 150, 20 );
            this.ratioCheck.TabIndex = 7;
            this.ratioCheck.Text = "&Keep aspect ratio";
            // 
            // pictureBox2
            // 
            this.pictureBox2.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
            this.pictureBox2.Location = new System.Drawing.Point( 10, 155 );
            this.pictureBox2.Name = "pictureBox2";
            this.pictureBox2.Size = new System.Drawing.Size( 190, 2 );
            this.pictureBox2.TabIndex = 9;
            this.pictureBox2.TabStop = false;
            // 
            // label3
            // 
            this.label3.Location = new System.Drawing.Point( 10, 168 );
            this.label3.Name = "label3";
            this.label3.Size = new System.Drawing.Size( 85, 14 );
            this.label3.TabIndex = 8;
            this.label3.Text = "&Interpolation:";
            // 
            // methodCombo
            // 
            this.methodCombo.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
            this.methodCombo.Items.AddRange( new object[] {
															 "Nearest neighbour",
															 "Bilinear",
															 "Bicubic"} );
            this.methodCombo.Location = new System.Drawing.Point( 100, 165 );
            this.methodCombo.Name = "methodCombo";
            this.methodCombo.Size = new System.Drawing.Size( 100, 21 );
            this.methodCombo.TabIndex = 9;
            // 
            // okButton
            // 
            this.okButton.FlatStyle = System.Windows.Forms.FlatStyle.Flat;
            this.okButton.Location = new System.Drawing.Point( 25, 205 );
            this.okButton.Name = "okButton";
            this.okButton.TabIndex = 10;
            this.okButton.Text = "Ok";
            this.okButton.Click += new System.EventHandler( this.okButton_Click );
            // 
            // cancelButton
            // 
            this.cancelButton.DialogResult = System.Windows.Forms.DialogResult.Cancel;
            this.cancelButton.FlatStyle = System.Windows.Forms.FlatStyle.Flat;
            this.cancelButton.Location = new System.Drawing.Point( 115, 205 );
            this.cancelButton.Name = "cancelButton";
            this.cancelButton.TabIndex = 11;
            this.cancelButton.Text = "Cancel";
            // 
            // ResizeForm
            // 
            this.AcceptButton = this.okButton;
            this.AutoScaleBaseSize = new System.Drawing.Size( 5, 13 );
            this.CancelButton = this.cancelButton;
            this.ClientSize = new System.Drawing.Size( 214, 238 );
            this.Controls.AddRange( new System.Windows.Forms.Control[] {
																		  this.cancelButton,
																		  this.okButton,
																		  this.methodCombo,
																		  this.label3,
																		  this.pictureBox2,
																		  this.ratioCheck,
																		  this.heightBox,
																		  this.label2,
																		  this.widthBox,
																		  this.label1,
																		  this.sizeButton,
																		  this.pictureBox1,
																		  this.factorBox,
																		  this.factorButton} );
            this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedToolWindow;
            this.MaximizeBox = false;
            this.MinimizeBox = false;
            this.Name = "ResizeForm";
            this.ShowInTaskbar = false;
            this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
            this.Text = "Resize image";
            this.Load += new System.EventHandler( this.ResizeForm_Load );
            this.ResumeLayout( false );

        }
        #endregion

        // On form load
        private void ResizeForm_Load( object sender, System.EventArgs e )
        {
            // default resize factor
            factorBox.Text = "2";

            // width & height
            widthBox.Text = ( originalSize.Width * 2 ).ToString( );
            heightBox.Text = ( originalSize.Height * 2 ).ToString( );

            methodCombo.SelectedIndex = 1;
        }

        // On size radio button checked state changed
        private void sizeButton_CheckedChanged( object sender, System.EventArgs e )
        {
            bool enable = sizeButton.Checked;

            widthBox.Enabled = enable;
            heightBox.Enabled = enable;
            ratioCheck.Enabled = enable;
        }

        // On factor radio button checked state changed
        private void factorButton_CheckedChanged( object sender, System.EventArgs e )
        {
            factorBox.Enabled = factorButton.Checked;
        }

        // On factor changed
        private void factorBox_TextChanged( object sender, System.EventArgs e )
        {
            try
            {
                float factor = float.Parse( factorBox.Text );

                updating = true;
                widthBox.Text = Math.Max( 1, Math.Min( 5000, (int) ( factor * originalSize.Width ) ) ).ToString( );
                heightBox.Text = Math.Max( 1, Math.Min( 5000, (int) ( factor * originalSize.Height ) ) ).ToString( );
                updating = false;
            }
            catch ( Exception )
            {
            }
        }

        // On width changed
        private void widthBox_TextChanged( object sender, System.EventArgs e )
        {
            if ( ( !updating ) && ( ratioCheck.Checked ) )
            {
                try
                {
                    int width = int.Parse( widthBox.Text );

                    updating = true;
                    heightBox.Text = Math.Max( 1, Math.Min( 5000, (int) ( width * originalSize.Height / originalSize.Width ) ) ).ToString( );
                    updating = false;
                }
                catch ( Exception )
                {
                }
            }
        }

        // On height changed
        private void heightBox_TextChanged( object sender, System.EventArgs e )
        {
            if ( ( !updating ) && ( ratioCheck.Checked ) )
            {
                try
                {
                    int height = int.Parse( heightBox.Text );

                    updating = true;
                    widthBox.Text = Math.Max( 1, Math.Min( 5000, (int) ( height * originalSize.Width / originalSize.Height ) ) ).ToString( );
                    updating = false;
                }
                catch ( Exception )
                {
                }
            }
        }

        // On "Ok" button
        private void okButton_Click( object sender, System.EventArgs e )
        {
            try
            {
                // get new image size
                int width = Math.Max( 1, Math.Min( 5000, int.Parse( widthBox.Text ) ) );
                int height = Math.Max( 1, Math.Min( 5000, int.Parse( heightBox.Text ) ) );

                // create appropriate filter
                switch ( methodCombo.SelectedIndex )
                {
                    case 0:
                        filter = new ResizeNearestNeighbor( width, height );
                        break;
                    case 1:
                        filter = new ResizeBilinear( width, height );
                        break;
                    case 2:
                        filter = new ResizeBicubic( width, height );
                        break;
                }

                // close the dialog
                this.DialogResult = DialogResult.OK;
                this.Close( );
            }
            catch ( Exception )
            {
                MessageBox.Show( this, "Incorrect values are entered", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error );
            }
        }
    }
}

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This article, along with any associated source code and files, is licensed under The GNU General Public License (GPLv3)

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About the Author

Andrew Kirillov
Software Developer (Senior) Cisco Systems
United Kingdom United Kingdom
Started software development at about 15 years old and it seems like now it lasts most part of my life. Fortunately did not spend too much time with Z80 and BK0010 and switched to 8086 and further. Similar with programming languages – luckily managed to get away from BASIC and Pascal to things like Assembler, C, C++ and then C#. Apart from daily programming for food, do it also for hobby, where mostly enjoy areas like Computer Vision, Robotics and AI. This led to some open source stuff like AForge.NET.
 
Going out of computers I am just a man loving his family, enjoying traveling, a bit of books, a bit of movies and a mixture of everything else. Always wanted to learn playing guitar, but it seems like 6 strings are much harder than few dozens of keyboard’s keys. Will keep progressing ...

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