C#+Halcon实现图像平移和缩放

GTX_AI · 发表于 2019-9-2 22:55:58

C#+Halcon实现图像标注：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using HalconDotNet;
namespace image_to_label
{
public partial class Form1 : Form
{
HTuple WindowID, ImageWidth, ImageHeight;
private double RowDown;//鼠标按下时的行坐标
private double ColDown;//鼠标按下时的列坐标
HObject ho_image; //图像变量
public Form1()
{
InitializeComponent();
WindowID = hWindowControl1.HalconWindow;
}
private void bt_openImage_Click(object sender, EventArgs e)
{
OpenFileDialog openFileDialog = new OpenFileDialog();
//openFileDialog.Filter = "JPEG文件|*.jpg*|BMP文件|*.bmp*|TIFF文件|*.tiff*";
openFileDialog.Filter = "所有图像文件 | *.bmp; *.pcx; *.png; *.jpg; *.gif;*.tif; *.ico; *.dxf; *.cgm; *.cdr; *.wmf; *.eps; *.emf";
if (openFileDialog.ShowDialog() == DialogResult.OK)
{
HTuple ImagePath = openFileDialog.FileName;
HOperatorSet.ReadImage(out ho_image, ImagePath);
}
HOperatorSet.GetImageSize(ho_image, out ImageWidth, out ImageHeight);
HOperatorSet.SetPart(WindowID, 0, 0, ImageHeight, ImageWidth);
HOperatorSet.DispObj(ho_image, WindowID);
}
private void hWindowControl1_HMouseDown(object sender, HMouseEventArgs e)
{
HTuple Row, Column, Button;
HOperatorSet.GetMposition(WindowID, out Row, out Column, out Button);
RowDown = Row; // 鼠标按下时的行坐标
ColDown = Column;
}
private void hWindowControl1_HMouseMove(object sender, HMouseEventArgs e)
{
HTuple Row, Column, Button, pointGray;
HOperatorSet.GetMposition(WindowID, out Row, out Column, out Button); //获取当前鼠标的坐标值
if (ImageHeight != null && (Row > 0 && Row < ImageHeight) && (Column > 0 && Column < ImageWidth))//设置3个条件项，防止程序崩溃。
{
HOperatorSet.GetGrayval(ho_image, Row, Column, out pointGray); //获取当前点的灰度值
}
else
{
pointGray = "_";
}
String str = String.Format("Row:{0} Column:{1} Gray:{2}", Row, Column, pointGray); //格式化字符串
label_xyRGB.Text = str;
}
private void hWindowControl1_HMouseUp(object sender, HMouseEventArgs e)
{
HTuple row1, col1, row2, col2, Row, Column, Button;
HOperatorSet.GetMposition(WindowID, out Row, out Column, out Button);
double RowMove = Row - RowDown; //鼠标弹起时的行坐标减去按下时的行坐标，得到行坐标的移动值
double ColMove = Column - ColDown;//鼠标弹起时的列坐标减去按下时的列坐标，得到列坐标的移动值
HOperatorSet.GetPart(WindowID, out row1, out col1, out row2, out col2);//得到当前的窗口坐标
HOperatorSet.SetPart(WindowID, row1 - RowMove, col1 - ColMove, row2 - RowMove, col2 - ColMove);//这里可能有些不好理解。以左上角原点为参考点
HOperatorSet.ClearWindow(WindowID);
if (ImageHeight != null)
{
HOperatorSet.DispObj(ho_image, WindowID);
}
else
{
MessageBox.Show("请加载一张图片");
}
}
private void hWindowControl1_HMouseWheel(object sender, HMouseEventArgs e)
{
HTuple Zoom, Row, Col, Button;
HTuple Row0, Column0, Row00, Column00, Ht, Wt, r1, c1, r2, c2;
if (e.Delta > 0)
{
Zoom = 1.5;
}
else
{
Zoom = 0.5;
}
HOperatorSet.GetMposition(WindowID, out Row, out Col, out Button);
HOperatorSet.GetPart(WindowID, out Row0, out Column0, out Row00, out Column00);
Ht = Row00 - Row0;
Wt = Column00 - Column0;
if (Ht * Wt < 32000 * 32000 || Zoom == 1.5)//普通版halcon能处理的图像最大尺寸是32K*32K。如果无限缩小原图像，导致显示的图像超出限制，则会造成程序崩溃
{
r1 = (Row0 + ((1 - (1.0 / Zoom)) * (Row - Row0)));
c1 = (Column0 + ((1 - (1.0 / Zoom)) * (Col - Column0)));
r2 = r1 + (Ht / Zoom);
c2 = c1 + (Wt / Zoom);
HOperatorSet.SetPart(WindowID, r1, c1, r2, c2);
HOperatorSet.ClearWindow(WindowID);
HOperatorSet.DispObj(ho_image, WindowID);
}
}
private void bt_ResetImage_Click(object sender, EventArgs e)
{
HOperatorSet.SetPart(WindowID, 0, 0, ImageHeight - 1, ImageWidth - 1);
HOperatorSet.ClearWindow(WindowID);
HOperatorSet.DispObj(ho_image, WindowID);
}
}
}

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参考：
【1】C# 简易实现图片的缩放以及图片的平移
【2】Halcon+Winform实现图像缩放等功能
【3】C#与Halcon联合编程实现鼠标拖动图片
【4】获取鼠标事件

GTX_AI · 发表于 2019-11-5 22:50:05

dev_update_off()
dev_set_draw('margin')
dev_close_window()
dev_open_window(0, 0, 512, 512, 'black', WindowHandle)
read_image(Image, 'printer_chip/printer_chip_01')
get_mbutton(WindowHandle, Row, Column, Button)
* 画圆
draw_circle(WindowHandle, Row1, Column1, Radius)
gen_circle(Circle, Row1, Column1, Radius)
* 交互式画圆
read_image(Image,'monkey')
draw_circle_mod(WindowHandle,20,20,15,Row,Column,Radius)
gen_circle(Circle,Row,Column,Radius)
reduce_domain(Image,Circle,ImageReduced)
invert_image (ImageReduced, ImageInvert)
dev_display (ImageInvert)

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LJN · 发表于 2020-8-21 22:47:24

谢谢楼主的分享，好好学习一下:lol

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C#+Halcon实现图像平移和缩放

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