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前言

为了更好地去学习WPF+Halcon，我决定去报个班学一下。原因无非是想换个工作。相关的教学视频来源于下方的Up主的提供的教程。这里只做笔记分享，想要源码或者教学视频可以和他联系一下。

相关链接

微软系列技术教程 WPF 年度公益课程

Halcon开发 CSDN博客专栏

个人学习的Gitee 项目地址仓库

项目专栏

WPF+Halcon实战项目

运行环境

• .net core 8.0
• visual studio 2022
• halcon HDevelop 20.11
• windows 11

匹配图片

WPF导出匹配模板

如何了解Halcon和C#代码的对应关系

我之前的博客上面说过，Halcon是可以进行C# 文档导出的功能的

如果我们对其添加注释，其导出的文件也有添加对应的注释的功能。

所以我们只需要将对应的代码超过了，进行对应的转化即可。

逻辑分析：

添加截取ROI功能

我们之前的抽象封装，还缺少截取ROI的功能，这里我们将ROI截取功能添加上去。

截取ROI对应代码

    //截取ROIhv_Row1.Dispose();hv_Column1.Dispose();hv_Row2.Dispose();hv_Column2.Dispose();HOperatorSet.DrawRectangle1(hv_WindowHandle, out hv_Row1, out hv_Column1, out hv_Row2, out hv_Column2);ho_Rectangle.Dispose();HOperatorSet.GenRectangle1(out ho_Rectangle, hv_Row1, hv_Column1, hv_Row2, hv_Column2);ho_ImageReduced.Dispose();HOperatorSet.ReduceDomain(ho_Image, ho_Rectangle, out ho_ImageReduced);

基类

using HalconDotNet;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;namespace HalconExtension.Models
{public abstract class HObjBase{/// <summary>/// HS组件主题/// </summary>public HSmartWindowControlWPF WindowControlWPF { get; set; }/// <summary>/// 资源路径/// </summary>public string ResourcesPath { get => AppDomain.CurrentDomain.BaseDirectory + "Resources"; }/// <summary>/// 导出路径/// </summary>public string OutputPath{get{var path = AppDomain.CurrentDomain.BaseDirectory + "Output";//如果不存在就创建if (!Directory.Exists(path)){Directory.CreateDirectory(path);}return path;}}public HDrawingObject DrawingObject { get; set; }public HImage Image { get; set; }public HObject ROI = new HObject();public HObjBase(HSmartWindowControlWPF windowControlWPF, HImage image){WindowControlWPF = windowControlWPF;Image = image;}......其它代码/// <summary>/// 截取图片/// </summary>public abstract HObject Reduce();}
}

矩形

using HalconDotNet;
using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;namespace HalconExtension.Models
{/// <summary>/// 矩形封装/// </summary>public class HRectangleObj : HObjBase{public HTuple HType { get; private set; }public HTuple Row1 { get; private set; }public HTuple Row2 { get; private set; }public HTuple Column1 { get; private set; }public HTuple Column2 { get; private set; }/// <summary>/// 刷新回调/// </summary>public Action<HRectangleObj> RefleshCallBack { get; set; }/// <summary>/// 初始化构造函数/// </summary>/// <param name="windowControlWPF"></param>/// <param name="row1"></param>/// <param name="column1"></param>/// <param name="row2"></param>/// <param name="column2"></param>public HRectangleObj(HSmartWindowControlWPF windowControlWPF,HImage hImage, HTuple row1, HTuple column1, HTuple row2, HTuple column2) : base(windowControlWPF, hImage){//WindowControlWPF = windowControlWPF;Row1 = row1;Column1 = column1;Row2 = row2;Column2 = column2;DrawingObject = HDrawingObject.CreateDrawingObject(HDrawingObject.HDrawingObjectType.RECTANGLE1, Row1, Column1, Row2, Column2);//添加更新事件DrawingObject.OnDrag(Reflash);DrawingObject.OnResize(Reflash);}/// <summary>/// 默认构造函数/// </summary>/// <param name="windowControl"></param>public HRectangleObj(HSmartWindowControlWPF windowControl,HImage hImage) : this(windowControl,hImage,100,200,300,400){}......其它代码/// <summary>/// 截取图片/// </summary>public override HObject Reduce(){HObject res = new HObject();HOperatorSet.GenRectangle1(out ROI, Row1, Column1, Row2, Column2);HOperatorSet.ReduceDomain(Image, ROI, out res);return res;}}
}

圆形

using HalconDotNet;
using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Data.Common;
using System.Linq;
using System.Text;
using System.Threading.Tasks;namespace HalconExtension.Models
{public class HCircleObj : HObjBase{public HTuple Row { get; set; }public HTuple Column { get; set; }public HTuple Radius { get; set; }public HTuple HType { get; private set; }/// <summary>/// 刷新回调/// </summary>public Action<HCircleObj> RefleshCallBack { get; set; }public HCircleObj(HSmartWindowControlWPF windowControlWPF,HImage hImage, HTuple row, HTuple col, HTuple radius):base(windowControlWPF,hImage){Row = row;Column = col;Radius = radius;DrawingObject = HDrawingObject.CreateDrawingObject(HDrawingObject.HDrawingObjectType.CIRCLE, Row, Column, Radius);//添加更新事件DrawingObject.OnDrag(Reflash);DrawingObject.OnResize(Reflash);}public HCircleObj(HSmartWindowControlWPF windowControlWPF,HImage hImage) : this(windowControlWPF,hImage,64,64,64){}......其它代码/// <summary>/// 截取图片/// </summary>public override HObject Reduce(){HObject res = new HObject();HOperatorSet.GenCircle(out ROI, Row, Column,Radius);HOperatorSet.ReduceDomain(Image, ROI, out res);return res;}}
}

生成导出模板

        /// <summary>/// 生成匹配模板/// </summary>private void InitTemplate(){HTuple modelId = new HTuple();var ho_ImageReduced = RectangleObj.Reduce();HOperatorSet.CreateShapeModel(ho_ImageReduced, "auto", -0.39, 0.79, "auto", "auto","use_polarity", "auto", "auto", out modelId);//导出匹配模板HOperatorSet.WriteShapeModel(modelId, RectangleObj.OutputPath+"/output.shm");MsgHelper.Success($"生成模板成功！路径为:{RectangleObj.OutputPath + "/output.shm"}");}

运行结果：

可能的报错

你的文件路径不存在

Halcon组件无法自动生成文件路径，如果保存的文件夹不存在会抛出异常

你选择的区域的内容有效信息过少