C# 图像编程初体验

来源：互联网发布：船舶有限元软件使用编辑：程序博客网时间：2024/05/16 06:40

　　偶尔浏图像编程的小例子。想想自己学了这么多天，还不知道图像编程是怎么回事呢。于是，小试了一下。等功力提升再完善吧。

namespace WindowsApplication1
{
    partial class Form1
    {
        /// <summary> 
        /// 必需的设计器变量。 
        /// </summary> 
        private System.ComponentModel.IContainer components = null;
        /// <summary> 
        /// 清理所有正在使用的资源。 
        /// </summary> 
        /// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param> 
        protected override void Dispose(bool disposing)
        {
            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);
        } 
        #region Windows 窗体设计器生成的代码 
        /// <summary> 
        /// 设计器支持所需的方法 - 不要 
        /// 使用代码编辑器修改此方法的内容。 
        /// </summary> 
        private void InitializeComponent()
        {
            this.pcbA = new System.Windows.Forms.PictureBox();
            this.btnLoadBmp = new System.Windows.Forms.Button();
            this.pcbB = new System.Windows.Forms.PictureBox();
            this.btnTurnRed = new System.Windows.Forms.Button();
            this.label1 = new System.Windows.Forms.Label();
            this.label2 = new System.Windows.Forms.Label();
            ((System.ComponentModel.ISupportInitialize)(this.pcbA)).BeginInit();
            ((System.ComponentModel.ISupportInitialize)(this.pcbB)).BeginInit();
            this.SuspendLayout();
            //  
            // pcbA 
            //  
            this.pcbA.Location = new System.Drawing.Point(12, 24);
            this.pcbA.Name = "pcbA";
            this.pcbA.Size = new System.Drawing.Size(195, 192);
            this.pcbA.TabIndex = 2;
            this.pcbA.TabStop = false;
            //  
            // btnLoadBmp 
            //  
            this.btnLoadBmp.Location = new System.Drawing.Point(285, 235);
            this.btnLoadBmp.Name = "btnLoadBmp";
            this.btnLoadBmp.Size = new System.Drawing.Size(75, 23);
            this.btnLoadBmp.TabIndex = 4;
            this.btnLoadBmp.Text = "添加图像";
            this.btnLoadBmp.UseVisualStyleBackColor = true;
            this.btnLoadBmp.Click += new System.EventHandler(this.button1_Click_1);
            //  
            // pcbB 
            //  
            this.pcbB.Location = new System.Drawing.Point(246, 24);
            this.pcbB.Name = "pcbB";
            this.pcbB.Size = new System.Drawing.Size(195, 192);
            this.pcbB.TabIndex = 6;
            this.pcbB.TabStop = false;
            //  
            // btnTurnRed 
            //  
            this.btnTurnRed.Location = new System.Drawing.Point(366, 235);
            this.btnTurnRed.Name = "btnTurnRed";
            this.btnTurnRed.Size = new System.Drawing.Size(75, 23);
            this.btnTurnRed.TabIndex = 8;
            this.btnTurnRed.Text = "染色";
            this.btnTurnRed.UseVisualStyleBackColor = true;
            this.btnTurnRed.Click += new System.EventHandler(this.button2_Click_1);
            //  
            // label1 
            //  
            this.label1.AutoSize = true;
            this.label1.Location = new System.Drawing.Point(244, 9);
            this.label1.Name = "label1";
            this.label1.Size = new System.Drawing.Size(41, 12);
            this.label1.TabIndex = 9;
            this.label1.Text = "之后：";
            //  
            // label2 
            //  
            this.label2.AutoSize = true;
            this.label2.Location = new System.Drawing.Point(12, 9);
            this.label2.Name = "label2";
            this.label2.Size = new System.Drawing.Size(41, 12);
            this.label2.TabIndex = 10;
            this.label2.Text = "之前：";
            //  
            // Form1 
            //  
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(453, 270);
            this.Controls.Add(this.label2);
            this.Controls.Add(this.label1);
            this.Controls.Add(this.btnTurnRed);
            this.Controls.Add(this.pcbB);
            this.Controls.Add(this.btnLoadBmp);
            this.Controls.Add(this.pcbA);
            this.Name = "Form1";
            this.Text = "Form1";
            ((System.ComponentModel.ISupportInitialize)(this.pcbA)).EndInit();
            ((System.ComponentModel.ISupportInitialize)(this.pcbB)).EndInit();
            this.ResumeLayout(false);
            this.PerformLayout();
        } 
        #endregion 
        private System.Windows.Forms.PictureBox pcbA;
        private System.Windows.Forms.Button btnLoadBmp;
        private System.Windows.Forms.PictureBox pcbB;
        private System.Windows.Forms.Button btnTurnRed;
        private System.Windows.Forms.Label label1;
        private System.Windows.Forms.Label label2;
    }
}

下面是实现代码：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Xml;
using System.IO;
namespace WindowsApplication1
{
    public partial class Form1 : Form
    {
        Bitmap image1;
        public Form1()
        {
            InitializeComponent();
        }
        private void button1_Click_1(object sender, EventArgs e)
        {
            btnTurnRed.Enabled = true;
            OpenFileDialog dialog = new OpenFileDialog();
            dialog.InitialDirectory = @"d:/";
            dialog.Filter = "BMP 图像 (*.bmp) | *.bmp";
            dialog.ShowDialog();
            string file = dialog.FileName;
            if (file == null)
            {
                MessageBox.Show("没有选择文件");
                return;
            }
            
            try{
                image1 = new Bitmap(file, true);
                this.pcbA.Image = image1;
                this.pcbB.Image = image1;
            }
            catch(ArgumentException)
            {
                MessageBox.Show("请选择正确文件");
            }
        }
        private void button2_Click_1(object sender, EventArgs e)
        {
            if (image1 == null)
                return;
            int x, y;
            // Loop through the images pixels to reset color. 
            for (x = 0; x < image1.Width; x++)
            {
                for (y = 0; y < image1.Height; y++)
                {
                    Color pixelColor = image1.GetPixel(x, y);
                    Color newColor = Color.FromArgb(pixelColor.R, 0, 0);
                    image1.SetPixel(x, y, newColor);
                }
            }
            // Set the PictureBox to display the image. 
            pcbB.Image = image1;
            btnTurnRed.Enabled = false;            
        }
    }
}