实例介绍
【实例简介】找图
【实例截图】
【核心代码】
using System;
using System.Diagnostics;
using System.Drawing;
using System.Windows.Forms;
using System.Drawing.Imaging;
using System.Collections.Generic;
using System.Drawing.Drawing2D;
namespace FindPic
{
public partial class Form1 : Form
{
Bitmap 大图 = new Bitmap(@"无标题.bmp");
Bitmap 完全对比 = new Bitmap(@"完全对比.bmp");
Bitmap 相似度 = new Bitmap(@"相似度.bmp");
Bitmap 透明 = new Bitmap(@"透明.bmp");
public Form1()
{
//避免线程冲突
System.Windows.Forms.Control.CheckForIllegalCrossThreadCalls = false;
//提高程序运行优先等级
Process.GetCurrentProcess().PriorityClass = ProcessPriorityClass.High;
InitializeComponent();
pictureBox1.Image = 大图;
pictureBox2.Image = 完全对比;
pictureBox3.Image = 透明;
pictureBox4.Image = 相似度;
}
//完全对比
private void pictureBox2_Click(object sender, EventArgs e)
{
Bitmap btm = (Bitmap)大图.Clone();
Stopwatch sw = new Stopwatch();
sw.Start(); //计时开始
List<Point> list = BmpColor.FindPic(0, 0, 大图.Width, 大图.Height, 大图, 完全对比, 0);
sw.Stop(); //计时结束
label4.Text = sw.ElapsedMilliseconds "毫秒";
label2.Text = list.Count.ToString();
if (list.Count > 0)
{
listView1.Items.Clear();
Graphics g = Graphics.FromImage(btm);
for (int i = 0; i < list.Count; i )
{
listView1.Items.Insert(listView1.Items.Count,
new ListViewItem(new string[] {
i.ToString(),
list[i].X.ToString(),
list[i].Y.ToString()
}));
g.DrawRectangle(new Pen(Color.Red, 2), list[i].X, list[i].Y, 完全对比.Width, 完全对比.Height);
}
}
pictureBox1.Image = btm;
}
//透明
private void pictureBox3_Click(object sender, EventArgs e)
{
Bitmap btm = (Bitmap)大图.Clone();
Stopwatch sw = new Stopwatch();
sw.Start(); //计时开始
List<Point> list = BmpColor.FindPic(0, 0, 大图.Width, 大图.Height, 大图, 透明, 0);
sw.Stop(); //计时结束
label4.Text = sw.ElapsedMilliseconds "毫秒";
label2.Text = list.Count.ToString();
if (list.Count > 0)
{
listView1.Items.Clear();
Graphics g = Graphics.FromImage(btm);
for (int i = 0; i < list.Count; i )
{
listView1.Items.Insert(listView1.Items.Count,
new ListViewItem(new string[] {
i.ToString(),
list[i].X.ToString(),
list[i].Y.ToString()
}));
g.DrawRectangle(new Pen(Color.Red, 2), list[i].X, list[i].Y, 透明.Width, 透明.Height);
}
}
pictureBox1.Image = btm;
}
//相似度
private void pictureBox4_Click(object sender, EventArgs e)
{
Bitmap btm = (Bitmap)大图.Clone();
Stopwatch sw = new Stopwatch();
sw.Start(); //计时开始
List<Point> list = BmpColor.FindPic(0, 0, 大图.Width, 大图.Height, 大图, 相似度, 40);
sw.Stop(); //计时结束
label4.Text = sw.ElapsedMilliseconds "毫秒";
label2.Text = list.Count.ToString();
if (list.Count > 0)
{
listView1.Items.Clear();
Graphics g = Graphics.FromImage(btm);
for (int i = 0; i < list.Count; i )
{
listView1.Items.Insert(listView1.Items.Count,
new ListViewItem(new string[] {
i.ToString(),
list[i].X.ToString(),
list[i].Y.ToString()
}));
g.DrawRectangle(new Pen(Color.Red, 2), list[i].X, list[i].Y, 相似度.Width, 相似度.Height);
}
}
pictureBox1.Image = btm;
}
private void timer1_Tick(object sender, EventArgs e)
{
Stopwatch sw = new Stopwatch();
sw.Start(); //计时开始
Bitmap btm = BmpColor.CopyScreen(100, 100, Cursor.Position.X - 100 / 2, Cursor.Position.Y - 100 / 2);
List<Point> list = BmpColor.FindColor(0, 0, btm.Width, btm.Height, btm, Color.FromArgb(80, 180, 216), 0);
sw.Stop(); //计时结束
label4.Text = sw.ElapsedMilliseconds "毫秒";
label2.Text = list.Count.ToString();
listView1.Items.Clear();
if (list.Count > 0)
{
//创建 GraphicsPath
GraphicsPath graphicsPath = new GraphicsPath();
Graphics g = Graphics.FromImage(btm);
for (int i = 0; i < list.Count; i )
{
listView1.Items.Insert(listView1.Items.Count,
new ListViewItem(new string[] {
i.ToString(),
list[i].X.ToString(),
list[i].Y.ToString()
}));
//将不透明点加到graphics path
graphicsPath.AddRectangle(new Rectangle(list[i].X, list[i].Y, 1, 1));
//g.DrawRectangle(new Pen(Color.Red, 1), list[i].X, list[i].Y, 2,2);
}
g.DrawPath(new Pen(Color.Red, 1), graphicsPath);
}
pictureBox1.Image = btm;
}
//屏幕找色
private void button1_Click(object sender, EventArgs e)
{
timer1.Enabled = !timer1.Enabled;
}
}
///////////////////////////////////////////////////////
public class BmpColor
{
/// <summary>
/// 在大图里找小图
/// </summary>
/// <param name="S_bmp">大图</param>
/// <param name="P_bmp">小图</param>
/// <param name="similar">容错值 取值0--255，数值越高效率越低，不建议超过50</param>
/// <returns></returns>
public static List<Point> FindPic(int left, int top, int width, int height, Bitmap S_bmp, Bitmap P_bmp, int similar)
{
if (S_bmp.PixelFormat != PixelFormat.Format24bppRgb) { throw new Exception("颜色格式只支持24位bmp"); }
if (P_bmp.PixelFormat != PixelFormat.Format24bppRgb) { throw new Exception("颜色格式只支持24位bmp"); }
int S_Width = S_bmp.Width;
int S_Height = S_bmp.Height;
int P_Width = P_bmp.Width;
int P_Height = P_bmp.Height;
//取出4个角的颜色
int px1 = P_bmp.GetPixel(0, 0).ToArgb(); //左上角
int px2 = P_bmp.GetPixel(P_Width - 1, 0).ToArgb(); //右上角
int px3 = P_bmp.GetPixel(0, P_Height - 1).ToArgb(); //左下角
int px4 = P_bmp.GetPixel(P_Width - 1, P_Height - 1).ToArgb(); //右下角
Color BackColor = P_bmp.GetPixel(0, 0); //背景色
BitmapData S_Data = S_bmp.LockBits(new Rectangle(0, 0, S_Width, S_Height), ImageLockMode.ReadOnly, PixelFormat.Format24bppRgb);
BitmapData P_Data = P_bmp.LockBits(new Rectangle(0, 0, P_Width, P_Height), ImageLockMode.ReadOnly, PixelFormat.Format24bppRgb);
List<Point> List;
if (px1 == px2 && px1 == px3 && px1 == px4) //如果4个角的颜色相同
{
//透明找图
List = _FindPic(left, top, width, height, S_Data, P_Data, GetPixelData(P_Data, BackColor), similar);
}
else if (similar > 0)
{
//相似找图
List = _FindPic(left, top, width, height, S_Data, P_Data, similar);
}
else
{
//全匹配找图效率最高
List = _FindPic(left, top, width, height, S_Data, P_Data);
}
S_bmp.UnlockBits(S_Data);
P_bmp.UnlockBits(P_Data);
return List;
}
/// <summary>
/// 全匹配找图
/// </summary>
/// <param name="S_Data">大图数据</param>
/// <param name="P_Data">小图数据</param>
/// <returns></returns>
private static unsafe List<Point> _FindPic(int left, int top, int width, int height, BitmapData S_Data, BitmapData P_Data)
{
List<Point> List = new List<Point>();
int S_stride = S_Data.Stride;
int P_stride = P_Data.Stride;
IntPtr S_Iptr = S_Data.Scan0;
IntPtr P_Iptr = P_Data.Scan0;
byte* S_ptr;
byte* P_ptr;
bool IsOk = false;
int _BreakW = width - P_Data.Width 1;
int _BreakH = height - P_Data.Height 1;
for (int h = top; h < _BreakH; h )
{
for (int w = left; w < _BreakW; w )
{
P_ptr = (byte*)(P_Iptr);
for (int y = 0; y < P_Data.Height; y )
{
for (int x = 0; x < P_Data.Width; x )
{
S_ptr = (byte*)((int)S_Iptr S_stride * (h y) (w x) * 3);
P_ptr = (byte*)((int)P_Iptr P_stride * y x * 3);
if (S_ptr[0] == P_ptr[0] && S_ptr[1] == P_ptr[1] && S_ptr[2] == P_ptr[2])
{
IsOk = true;
}
else
{
IsOk = false;
break;
}
}
if (!IsOk) { break; }
}
if (IsOk) { List.Add(new Point(w, h)); }
IsOk = false;
}
}
return List;
}
/// <summary>
/// 相似找图
/// </summary>
/// <param name="S_Data">大图数据</param>
/// <param name="P_Data">小图数据</param>
/// <param name="similar">误差值</param>
/// <returns></returns>
private static unsafe List<Point> _FindPic(int left, int top, int width, int height, BitmapData S_Data, BitmapData P_Data, int similar)
{
List<Point> List = new List<Point>();
int S_stride = S_Data.Stride;
int P_stride = P_Data.Stride;
IntPtr S_Iptr = S_Data.Scan0;
IntPtr P_Iptr = P_Data.Scan0;
byte* S_ptr;
byte* P_ptr;
bool IsOk = false;
int _BreakW = width - P_Data.Width 1;
int _BreakH = height - P_Data.Height 1;
for (int h = top; h < _BreakH; h )
{
for (int w = left; w < _BreakW; w )
{
P_ptr = (byte*)(P_Iptr);
for (int y = 0; y < P_Data.Height; y )
{
for (int x = 0; x < P_Data.Width; x )
{
S_ptr = (byte*)((int)S_Iptr S_stride * (h y) (w x) * 3);
P_ptr = (byte*)((int)P_Iptr P_stride * y x * 3);
if (ScanColor(S_ptr[0], S_ptr[1], S_ptr[2], P_ptr[0], P_ptr[1], P_ptr[2], similar)) //比较颜色
{
IsOk = true;
}
else
{
IsOk = false; break;
}
}
if (IsOk == false) { break; }
}
if (IsOk) { List.Add(new Point(w, h)); }
IsOk = false;
}
}
return List;
}
/// <summary>
/// 透明找图
/// </summary>
/// <param name="S_Data">大图数据</param>
/// <param name="P_Data">小图数据</param>
/// <param name="PixelData">小图中需要比较的像素数据</param>
/// <param name="similar">误差值</param>
/// <returns></returns>
private static unsafe List<Point> _FindPic(int left, int top, int width, int height, BitmapData S_Data, BitmapData P_Data, int[,] PixelData, int similar)
{
List<Point> List = new List<Point>();
int Len = PixelData.GetLength(0);
int S_stride = S_Data.Stride;
int P_stride = P_Data.Stride;
IntPtr S_Iptr = S_Data.Scan0;
IntPtr P_Iptr = P_Data.Scan0;
byte* S_ptr;
byte* P_ptr;
bool IsOk = false;
int _BreakW = width - P_Data.Width 1;
int _BreakH = height - P_Data.Height 1;
for (int h = top; h < _BreakH; h )
{
for (int w = left; w < _BreakW; w )
{
for (int i = 0; i < Len; i )
{
S_ptr = (byte*)((int)S_Iptr S_stride * (h PixelData[i, 1]) (w PixelData[i, 0]) * 3);
P_ptr = (byte*)((int)P_Iptr P_stride * PixelData[i, 1] PixelData[i, 0] * 3);
if (ScanColor(S_ptr[0], S_ptr[1], S_ptr[2], P_ptr[0], P_ptr[1], P_ptr[2], similar)) //比较颜色
{
IsOk = true;
}
else
{
IsOk = false; break;
}
}
if (IsOk) { List.Add(new Point(w, h)); }
IsOk = false;
}
}
return List;
}
#region 范围找色
/// <summary>
/// 范围找色
/// </summary>
/// <param name="left">起始X</param>
/// <param name="top">起始Y</param>
/// <param name="width">查询宽度</param>
/// <param name="height">查询高度</param>
/// <param name="S_bmp">图片</param>
/// <param name="clr">要查询的颜色</param>
/// <param name="similar">误差值0-255</param>
/// <returns></returns>
public static unsafe List<Point> FindColor(int left, int top, int width, int height, Bitmap S_bmp, Color clr, int similar)
{
if (S_bmp.PixelFormat != PixelFormat.Format24bppRgb) { throw new Exception("颜色格式只支持24位bmp"); }
BitmapData S_Data = S_bmp.LockBits(new Rectangle(0, 0, S_bmp.Width, S_bmp.Height), ImageLockMode.ReadOnly, PixelFormat.Format24bppRgb);
IntPtr _Iptr = S_Data.Scan0;
byte* _ptr;
List<Point> List = new List<Point>();
for (int y = top; y < height; y )
{
for (int x = left; x < width; x )
{
_ptr = (byte*)((int)_Iptr S_Data.Stride * (y) (x) * 3);
if (ScanColor(_ptr[0], _ptr[1], _ptr[2], clr.B, clr.G, clr.R, similar))
{
List.Add(new Point(x, y));
}
}
}
S_bmp.UnlockBits(S_Data);
return List;
}
#endregion
#region 比较两个Color
/// <summary>
/// 比较两个 Color
/// </summary>
/// <param name="similar">容错值</param>
/// <returns></returns>
public static bool IsColor(Color clr1, Color clr2, int similar = 0)
{
if (ScanColor(clr1.B, clr1.G, clr1.R, clr2.B, clr2.G, clr2.R, similar))
{
return true;
}
return false;
}
#endregion
#region 屏幕截图
/// <summary>
/// 屏幕截图
/// </summary>
/// <param name="rect">截图矩形范围</param>
/// <returns></returns>
public static unsafe Bitmap CopyScreen(int Width, int Height, int x, int y)
{
Bitmap bitmap = new Bitmap(Width, Height, PixelFormat.Format24bppRgb);
using (Graphics g = Graphics.FromImage(bitmap))
{
g.CopyFromScreen(x, y, 0, 0, new Size(Width, Height));
g.Dispose();
}
System.GC.Collect();
return bitmap;
}
#endregion
#region 私有方法
private static unsafe int[,] GetPixelData(BitmapData P_Data, Color BackColor)
{
byte B = BackColor.B, G = BackColor.G, R = BackColor.R;
int Width = P_Data.Width, Height = P_Data.Height;
int P_stride = P_Data.Stride;
IntPtr P_Iptr = P_Data.Scan0;
byte* P_ptr;
int[,] PixelData = new int[Width * Height, 2];
int i = 0;
for (int y = 0; y < Height; y )
{
for (int x = 0; x < Width; x )
{
P_ptr = (byte*)((int)P_Iptr P_stride * y x * 3);
if (B == P_ptr[0] & G == P_ptr[1] & R == P_ptr[2])
{
}
else
{
PixelData[i, 0] = x;
PixelData[i, 1] = y;
i ;
}
}
}
int[,] PixelData2 = new int[i, 2];
Array.Copy(PixelData, PixelData2, i * 2);
return PixelData2;
}
//找图BGR比较
private static unsafe bool ScanColor(byte b1, byte g1, byte r1, byte b2, byte g2, byte r2, int similar)
{
if ((Math.Abs(b1 - b2)) > similar) { return false; } //B
if ((Math.Abs(g1 - g2)) > similar) { return false; } //G
if ((Math.Abs(r1 - r2)) > similar) { return false; } //R
return true;
}
#endregion
}
}
好例子网口号：伸出你的我的手 — 分享！
小贴士
感谢您为本站写下的评论，您的评论对其它用户来说具有重要的参考价值，所以请认真填写。
- 类似“顶”、“沙发”之类没有营养的文字，对勤劳贡献的楼主来说是令人沮丧的反馈信息。
- 相信您也不想看到一排文字/表情墙，所以请不要反馈意义不大的重复字符，也请尽量不要纯表情的回复。
- 提问之前请再仔细看一遍楼主的说明，或许是您遗漏了。
- 请勿到处挖坑绊人、招贴广告。既占空间让人厌烦，又没人会搭理，于人于己都无利。
关于好例子网
本站旨在为广大IT学习爱好者提供一个非营利性互相学习交流分享平台。本站所有资源都可以被免费获取学习研究。本站资源来自网友分享，对搜索内容的合法性不具有预见性、识别性、控制性，仅供学习研究，请务必在下载后24小时内给予删除，不得用于其他任何用途，否则后果自负。基于互联网的特殊性，平台无法对用户传输的作品、信息、内容的权属或合法性、安全性、合规性、真实性、科学性、完整权、有效性等进行实质审查；无论平台是否已进行审查，用户均应自行承担因其传输的作品、信息、内容而可能或已经产生的侵权或权属纠纷等法律责任。本站所有资源不代表本站的观点或立场，基于网友分享，根据中国法律《信息网络传播权保护条例》第二十二与二十三条之规定，若资源存在侵权或相关问题请联系本站客服人员，点此联系我们。关于更多版权及免责申明参见 版权及免责申明
网友评论
我要评论