标签：sender void dev halcon private 华睿 using 取像 public
根据官方demo修改出来的类
public class DaHuaCam
{
List<IGrabbedRawData> m_frameList; // 图像缓存列表 | frame data list
Mutex m_mutex = new Mutex(); // 锁，保证多线程安全 | mutex
private IDevice m_dev;
List<IDeviceInfo> li;
public delegate void ImageEventHandler(object sender, ImageEventArgs e);
public event ImageEventHandler ImageEvent;
public DaHuaCam()
{
m_frameList = new List<IGrabbedRawData>();
li = Enumerator.EnumerateDevices();
}
protected void OnImageEvent(HObject image8Grey)
{
ImageEventArgs imageEventargs = new ImageEventArgs(image8Grey);
ImageEvent?.Invoke(this, imageEventargs);
}
/// <summary>
/// 打开相机
/// </summary>
/// <param name="index"></param>
public void OpenCamera(int index)
{
if (li.Count > 0)
{
m_dev = Enumerator.GetDeviceByIndex(index);
}
if (m_dev == null)
{
return;
}
m_dev.CameraOpened += OnCameraOpen;
m_dev.ConnectionLost += OnConnectLoss;
m_dev.CameraClosed += OnCameraClose;
// 打开设备 ，调用Open方法打开相机
// open device
if (!m_dev.Open())
{
MessageBox.Show("Open camera failed");
return;
}
// 设置缓存个数为8（默认值为16）
m_dev.StreamGrabber.SetBufferCount(8);
//注册相机取流回调事件
m_dev.StreamGrabber.ImageGrabbed += OnImageGrabbed;
}
/// <summary>
/// 是否开启触发模式
/// </summary>
/// <param name="fON">true为外触发，false为实时状态</param>
public void SetTrigger(bool fON)
{
if (fON)
{
//Open为开启触发模式，设置Line1时，triggermode自动改为On，不用手动写入
m_dev.TriggerSet.Open(TriggerSourceEnum.Line1);
}
else
{
//Close为关闭触发模式，此时，triggermode被改为Off
m_dev.TriggerSet.Close();
}
}
/// <summary>
/// 设置相机曝光
/// </summary>
/// <param name="exposuretime"></param>
public void SetExposureTime(int exposuretime)
{
using (IFloatParameter p = m_dev.ParameterCollection[ParametrizeNameSet.ExposureTime])
{
p.SetValue(exposuretime);
}
}
/// <summary>
/// 设置相机增益
/// </summary>
/// <param name="gain"></param>
public void SetGain(double gain)
{
using (IFloatParameter p = m_dev.ParameterCollection[ParametrizeNameSet.GainRaw])
{
p.SetValue(gain);
}
}
/// <summary>
/// 开始取流
/// </summary>
public void StartGrabImage()
{
if (m_dev == null)
{
throw new InvalidOperationException("Start Grab faild");
}
else
m_dev.StreamGrabber.Start();
}
/// <summary>
/// 停止取流
/// </summary>
public void StopGrabImage()
{
try
{
if (m_dev == null)
{
throw new InvalidOperationException("Device is invalid");
}
else
m_dev.StreamGrabber.Stop();
}
catch (Exception exception)
{
Catcher.Show(exception);
}
}
/// <summary>
/// 释放相机
/// </summary>
public void ReleaseCamera()
{
try
{
if (m_dev == null)
{
throw new InvalidOperationException("Device is invalid");
}
m_dev.StreamGrabber.ImageGrabbed -= OnImageGrabbed; // 反注册回调 | unregister grab event callback
m_dev.ShutdownGrab(); // 停止码流 | stop grabbing
m_dev.Close(); // 关闭相机 | close camera
}
catch (Exception ex)
{
Catcher.Show(ex);
}
}
// 相机打开回调
// camera open event callback
private void OnCameraOpen(object sender, EventArgs e)
{
}
// 相机关闭回调
// camera close event callback
private void OnCameraClose(object sender, EventArgs e)
{
}
private void OnConnectLoss(object sender, EventArgs e)
{
m_dev.ShutdownGrab();
m_dev.Dispose();
m_dev = null;
}
// 码流数据回调
// grab callback function
private void OnImageGrabbed(Object sender, GrabbedEventArgs e)
{
m_mutex.WaitOne();
m_frameList.Add(e.GrabResult.Clone());
m_mutex.ReleaseMutex();
if (m_frameList.Count == 0)
{
Thread.Sleep(10);
return;
}
// 图像队列取最新帧
// always get the latest frame in list
m_mutex.WaitOne();
IGrabbedRawData frame = m_frameList.ElementAt(m_frameList.Count - 1);
m_frameList.Clear();
m_mutex.ReleaseMutex();
// 主动调用回收垃圾
// call garbage collection
GC.Collect();
HObject himg;
try
{
// 图像转码成bitmap图像
// raw frame data converted to bitmap
var bitmap = frame.ToBitmap(false);
Rectangle rect = new Rectangle(0, 0, bitmap.Width, bitmap.Height);
BitmapData srcBmpData = bitmap.LockBits(rect, ImageLockMode.ReadOnly, PixelFormat.Format8bppIndexed);
//bitmap转halcon
HOperatorSet.GenImage1(out himg, "byte", bitmap.Width, bitmap.Height, srcBmpData.Scan0);
//用事件传出，用于外部使用
OnImageEvent(himg);
himg.Dispose();
}
catch (Exception exception)
{
Catcher.Show(exception);
}
}
}
public class ImageEventArgs
{
public HObject image;
public ImageEventArgs(HObject img)
{
image = img;
}
}
winform用法
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 ThridLibray;
namespace WindowsFormsApp1
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
DaHuaCam cam0 = new DaHuaCam();
private void Form1_Load(object sender, EventArgs e)
{
Control.CheckForIllegalCrossThreadCalls = false;
cam0.ImageEvent += Cam0_ImageEvent;
cam0.OpenCamera(0);
cam0.SetTrigger(true);
cam0.SetExposureTime(10000);
cam0.SetGain(5);
}
private void Cam0_ImageEvent(object sender, ImageEventArgs e)
{
hWindowControl1.HalconWindow.DispObj(e.image);
}
private void button1_Click(object sender, EventArgs e)
{
}
private void button2_Click(object sender, EventArgs e)
{
cam0.StartGrabImage();
}
private void button3_Click(object sender, EventArgs e)
{
cam0.StopGrabImage();
}
private void Form1_FormClosed(object sender, FormClosedEventArgs e)
{
cam0.ReleaseCamera();
}
}
}
界面
标签：sender,void,dev,halcon,private,华睿,using,取像,public 来源： https://www.cnblogs.com/yuanqi99977/p/15939391.html
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