C#联合Halcon相机实时采集

最新推荐文章于 2024-08-22 17:40:42 发布

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本文档介绍了如何使用C#语言配合Halcon库来实现实时从相机捕获图像并显示。首先在界面上设置按钮，然后通过`OpenFramegrabber`打开相机，设置采集参数，并启动`GrabImageStart`进行图像采集。当点击显示按钮时，开启定时器进行图像的连续采集和显示，利用`GrabImageAsync`异步获取图像，并通过`DispObj`在窗口中展示。该过程适用于机器视觉或图像处理应用。

C#联合Halcon相机实时采集

1、界面设置
在这里插入图片描述
2、打开相机

        /// <summary>
        /// 打开相机
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void button1_Click(object sender, EventArgs e)
        {
            HOperatorSet.GenEmptyObj(out ho_Image);
            hv_AcqHandle.Dispose();
            HOperatorSet.OpenFramegrabber("DirectShow", 1, 1, 0, 0, 0, 0, "default", 8, "rgb",
                -1, "false", "default", "[1] ", 0, -1, out hv_AcqHandle);
            HOperatorSet.SetFramegrabberParam(hv_AcqHandle, "grab_timeout", 5000);
            HOperatorSet.GrabImageStart(hv_AcqHandle, -1);
        }

3、采集与显示

        /// <summary>
        /// 采集显示
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void button2_Click(object sender, EventArgs e)
        {
            //启动定时器
            this.timer1.Enabled = true;

            //打开窗口,控件的宽，高，句柄
            HOperatorSet.OpenWindow(0, 0, this.hWindowControl1.Width, this.hWindowControl1.Height, this.hWindowControl1.HalconWindow, "visible", "", out hv_WindowHandle);
            HDevWindowStack.Push(hv_WindowHandle);

        }

        /// <summary>
        /// 定时器采集
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void timer1_Tick(object sender, EventArgs e)
        {
            //采集
            ho_Image.Dispose();
            HOperatorSet.GrabImageAsync(out ho_Image, hv_AcqHandle, -1);
            //为了把图片显示全
            HOperatorSet.GetImageSize(ho_Image, out hv_Width, out hv_Height);
            if (HDevWindowStack.IsOpen())
            {
                using (HDevDisposeHelper dh = new HDevDisposeHelper())
                {
                    HOperatorSet.SetPart(HDevWindowStack.GetActive(), 0, 0, hv_Height - 1, hv_Width - 1);
                }
            }
            //显示
            if (HDevWindowStack.IsOpen())
            {
                HOperatorSet.DispObj(ho_Image, HDevWindowStack.GetActive());
            }
        }