使用AForge访问USB摄像头控件

I have a project where i need to work with a USB camera to process images aquired at a very close range (under 5mm). Because the space available is very short, I can't use auxiliary lens.

我有一个项目，我需要使用USB摄像头来处理非常近距离(小于5毫米)的图像。因为可用的空间很短，我不能使用辅助镜头。

I know I can do some post processing at bitmap level, but I would like to gain access to properties like auto-focus or white balancing at camera level.

我知道我可以在位图级别上进行一些后期处理，但是我希望能够访问自动对焦或相机级别的白平衡等属性。

I'm developing in C# with AForge for image aquisition and post processing, but I can't seem to find a way to control the camera before the image aquisition takes place.

我正在c#与AForge一起开发图像采集和后期处理，但是在图像采集之前我似乎找不到一个方法来控制摄像机。

Can you help me?

你能帮我吗?

3 个解决方案

#1

After some more thorough research I've found the answer by myself.

经过更深入的研究，我自己找到了答案。

If anyone else is searching for this you can try the following;

如果有人在搜索这个，你可以试试下面的;

VideoCaptureDevice Cam1;
FilterInfoCollection VideoCaptureDevices;

VideoCaptureDevices = new FilterInfoCollection(FilterCategory.VideoInputDevice);
Cam1 = new VideoCaptureDevice(VideoCaptureDevices[0].MonikerString);
Cam1.DisplayPropertyPage(IntPtr.Zero); //This will display a form with camera controls

It also seems possible to control these items without the form by using IAMVideoProcAmp

使用IAMVideoProcAmp似乎也可以在不使用表单的情况下控制这些物品

#2

You can access camera setting directly without call the method DisplayPropertyPage()

您可以直接访问相机设置，而无需调用方法DisplayPropertyPage()

FilterInfoCollection videoDevices = 
    new FilterInfoCollection(FilterCategory.VideoInputDevice);

VideoCaptureDevice videoDevice = 
    new VideoCaptureDevice(videoDevices[camDevice].MonikerString);

videoDevice.SetCameraProperty(
    CameraControlProperty.Zoom,
    zoomValue,
    CameraControlFlags.Manual);

videoDevice.SetCameraProperty(
    CameraControlProperty.Focus,
    focusValue,
    CameraControlFlags.Manual);

videoDevice.SetCameraProperty(
    CameraControlProperty.Exposure,
    exposureValue,
    CameraControlFlags.Manual);

#3

To access other camera properties like brightness, contrast see IAMVideoProcAmp implementation

要访问其他相机属性，如亮度，请参阅IAMVideoProcAmp实现

videoDevice.SetVideoProperty(
    VideoProcAmpProperty.Brightness,
    brightnessValue,
    VideoProcAmpFlags.Manual);

videoDevice.SetVideoProperty(
    VideoProcAmpProperty.Contrast,
    contrastValue,
    VideoProcAmpFlags.Manual);

videoDevice.SetVideoProperty(
    VideoProcAmpProperty.Saturation,
    saturationValue,
    VideoProcAmpFlags.Manual);

videoDevice.SetVideoProperty(
    VideoProcAmpProperty.Sharpness,
    sharpnessValue,
    VideoProcAmpFlags.Manual);

videoDevice.SetVideoProperty(
    VideoProcAmpProperty.WhiteBalance,
    whiteBalanceValue,
    VideoProcAmpFlags.Manual);

videoDevice.SetVideoProperty(
    VideoProcAmpProperty.BacklightCompensation,
    backlightCompensationValue,
    VideoProcAmpFlags.Manual);

#1