C# OpenCvSharp 去水印图像修复

效果

项目

VS2010+.net4.0+OpenCvSharp3

代码

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;
using System.Drawing.Drawing2D;
using OpenCvSharp;
using OpenCvSharp.Extensions;namespace OpenCvSharp_去水印
{public partial class Form1 : Form{public Form1(){InitializeComponent();}bool IsDraw;System.Drawing.Point StartPoint, EndPoint;Pen p = new Pen(Color.Red, 2);Bitmap originImg;Image finishImg;Pen pen = new Pen(Color.Red, 2);public System.Drawing.Point[] pt = new System.Drawing.Point[4];Font font = new Font("宋体", 12);SolidBrush solidBrush = new SolidBrush(Color.Red);Rectangle rect;Graphics g;Bitmap bmp;string fileFilter = "*.*|*.bmp;*.jpg;*.jpeg;*.tiff;*.tiff;*.png";string img = "";Mat src;Mat maskROI;Mat mask;Mat dst = new Mat();Rect roiRect;private void button1_Click(object sender, EventArgs e){OpenFileDialog ofd = new OpenFileDialog();ofd.Filter = fileFilter;if (ofd.ShowDialog() != DialogResult.OK) return;img = ofd.FileName;var imagebyte = File.ReadAllBytes(img);bmp = new Bitmap(img);pictureBox1.Image = bmp;src = new Mat(img);g = pictureBox1.CreateGraphics();g.SmoothingMode = SmoothingMode.AntiAlias;  //使绘图质量最高，即消除锯齿g.InterpolationMode = InterpolationMode.HighQualityBicubic;g.CompositingQuality = CompositingQuality.HighQuality;p.StartCap = LineCap.Square;p.EndCap = LineCap.Square;originImg = new Bitmap(img);finishImg = (Image)originImg.Clone();}private void button4_Click(object sender, EventArgs e){pictureBox1.Image = bmp;originImg = new Bitmap(img);finishImg = (Image)originImg.Clone();}/// <summary>/// 鼠标左键按下/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void pictureBox1_MouseDown(object sender, MouseEventArgs e){if (e.Button == MouseButtons.Left){IsDraw = true;GetImagePixLocation(pictureBox1.Size, pictureBox1.Image.Size, e.Location, out StartPoint);}}/// <summary>/// 鼠标滑动/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void pictureBox1_MouseMove(object sender, MouseEventArgs e){if (IsDraw){GetImagePixLocation(pictureBox1.Size, pictureBox1.Image.Size, e.Location, out EndPoint);finishImg = (Image)originImg.Clone();g = Graphics.FromImage(finishImg);g.SmoothingMode = SmoothingMode.AntiAlias;System.Drawing.Point leftTop = new System.Drawing.Point(StartPoint.X, StartPoint.Y);int width = Math.Abs(StartPoint.X - EndPoint.X), height = Math.Abs(StartPoint.Y - EndPoint.Y);if (EndPoint.X < StartPoint.X)leftTop.X = EndPoint.X;if (EndPoint.Y < StartPoint.Y)leftTop.Y = EndPoint.Y;rect = new Rectangle(leftTop, new System.Drawing.Size(width, height));g.DrawRectangle(p, rect);pictureBox1.Image = finishImg;}}private void GetImagePixLocation(System.Drawing.Size pictureBoxSize, System.Drawing.Size imageSize, System.Drawing.Point pictureBoxPoint, out System.Drawing.Point imagePoint){imagePoint = new System.Drawing.Point(0, 0);double scale;int detalInHeight = 0;int detalInWidth = 0;if (Convert.ToDouble(pictureBoxSize.Width) / pictureBoxSize.Height > Convert.ToDouble(imageSize.Width) / imageSize.Height){scale = 1.0 * imageSize.Height / pictureBoxSize.Height;detalInWidth = Convert.ToInt32((pictureBoxSize.Width * scale - imageSize.Width) / 2.0);}else{scale = 1.0 * imageSize.Width / pictureBoxSize.Width;detalInHeight = Convert.ToInt32((pictureBoxSize.Height * scale - imageSize.Height) / 2.0);}imagePoint.X = Convert.ToInt32(pictureBoxPoint.X * scale - detalInWidth);imagePoint.Y = Convert.ToInt32(pictureBoxPoint.Y * scale - detalInHeight);}/// <summary>/// 鼠标左键弹起/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void pictureBox1_MouseUp(object sender, MouseEventArgs e){IsDraw = false;originImg = (Bitmap)finishImg;pictureBox1.Image = originImg;}private void Form1_Load(object sender, EventArgs e){this.SetStyle(ControlStyles.OptimizedDoubleBuffer | ControlStyles.AllPaintingInWmPaint | ControlStyles.UserPaint, true);this.UpdateStyles();//添加项：cBoxThresholdTypes.Items.Add(new ListItem("NS", InpaintMethod.NS));cBoxThresholdTypes.Items.Add(new ListItem("Telea", InpaintMethod.Telea));//设置选中项：cBoxThresholdTypes.SelectedIndex = 0;    //根据索引}private void button2_Click(object sender, EventArgs e){if (pictureBox1.Image == null ){return;}if (rect == null || (rect.Width==0 && rect.Height==0)){return;}maskROI = new Mat(rect.Height, rect.Width, src.Type(), Scalar.White);mask = src * 0;roiRect = new Rect(rect.X, rect.Y, rect.Width, rect.Height);mask[roiRect] = maskROI;Cv2.CvtColor(mask, mask, ColorConversionCodes.BGR2GRAY);if (pictureBox2.Image != null){pictureBox2.Image.Dispose();}pictureBox2.Image = BitmapConverter.ToBitmap(mask);}private void button3_Click(object sender, EventArgs e){Inpaint();}private void trackBar1_Scroll(object sender, EventArgs e){Inpaint();}InpaintMethod inpaintMethod;String CommandText = "";void Inpaint(){if (pictureBox1.Image == null || pictureBox2.Image == null){return;}if (rect == null || (rect.Width == 0 && rect.Height == 0)){return;}ListItem li = (ListItem)cBoxThresholdTypes.SelectedItem;inpaintMethod = (InpaintMethod)li.Value;CommandText = String.Format("Cv2.Inpaint(src, mask, dst,{0},{1})", trackBar1.Value, inpaintMethod.ToString());txtCommandText.Text = CommandText;Cv2.Inpaint(src, mask, dst, trackBar1.Value, inpaintMethod);if (pictureBox3.Image != null){pictureBox2.Image.Dispose();}pictureBox3.Image = BitmapConverter.ToBitmap(dst);}private void cBoxThresholdTypes_SelectedIndexChanged(object sender, EventArgs e){Inpaint();}}
}

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