HalconDotNet中的图像视频采集

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1. 单相机视频图像采集

  使用HalconDotNet进行单相机视频图像采集的基本步骤包括初始化相机、设置采集参数、开始采集、处理图像以及停止采集。

using HalconDotNet;public void SingleCameraCapture()
{HFramegrabber framegrabber = new HFramegrabber("GigEVision", 0, 0, 0, 0, 0, 0, "default", -1, "default", -1, "false", "default", "CameraName", 0, -1);HImage image = framegrabber.GrabImage();image.WriteImage("bmp", 0, "captured_image");framegrabber.CloseFramegrabber();
}

2. 多相机视频图像采集

  多相机视频图像采集需要为每个相机创建独立的帧抓取器，并分别进行图像采集和处理。

using HalconDotNet;public void MultiCameraCapture()
{HFramegrabber framegrabber1 = new HFramegrabber("GigEVision", 0, 0, 0, 0, 0, 0, "default", -1, "default", -1, "false", "default", "Camera1", 0, -1);HFramegrabber framegrabber2 = new HFramegrabber("GigEVision", 0, 0, 0, 0, 0, 0, "default", -1, "default", -1, "false", "default", "Camera2", 0, -1);HImage image1 = framegrabber1.GrabImage();HImage image2 = framegrabber2.GrabImage();image1.WriteImage("bmp", 0, "captured_image1");image2.WriteImage("bmp", 0, "captured_image2");framegrabber1.CloseFramegrabber();framegrabber2.CloseFramegrabber();
}

3. 设置相机曝光时间

  通过设置相机的曝光时间，可以控制图像的亮度和对比度。

using HalconDotNet;public void SetExposureTime()
{HFramegrabber framegrabber = new HFramegrabber("GigEVision", 0, 0, 0, 0, 0, 0, "default", -1, "default", -1, "false", "default", "CameraName", 0, -1);framegrabber.SetFramegrabberParam("ExposureTime", 5000); // 设置曝光时间为5000微秒HImage image = framegrabber.GrabImage();image.WriteImage("bmp", 0, "captured_image");framegrabber.CloseFramegrabber();
}

4. 实时图像显示

  在采集图像的同时，实时显示图像可以用于监控和调试。

using HalconDotNet;public void RealTimeDisplay()
{HFramegrabber framegrabber = new HFramegrabber("GigEVision", 0, 0, 0, 0, 0, 0, "default", -1, "default", -1, "false", "default", "CameraName", 0, -1);HWindow window = new HWindow(0, 0, 512, 512, 0, "visible", "");while (true){HImage image = framegrabber.GrabImage();window.DispImage(image);System.Threading.Thread.Sleep(100); // 控制显示频率}framegrabber.CloseFramegrabber();
}

5. 图像采集与保存

  采集图像并保存到指定路径，适用于需要长期存储图像数据的场景。

using HalconDotNet;public void CaptureAndSave()
{HFramegrabber framegrabber = new HFramegrabber("GigEVision", 0, 0, 0, 0, 0, 0, "default", -1, "default", -1, "false", "default", "CameraName", 0, -1);HImage image = framegrabber.GrabImage();string savePath = "C:\\Images\\captured_image.bmp";image.WriteImage("bmp", 0, savePath);framegrabber.CloseFramegrabber();
}

  这些示例代码展示了如何使用HalconDotNet进行单相机和多相机的视频图像采集，并涵盖了设置曝光时间、实时显示图像以及图像保存等常见操作。