如何显示与Emgu摄像头拍摄的图像？ [英] How to display webcam images captured with Emgu?

问题描述

我目前正在使用人脸识别的项目。
，因此我需要一种方法来显示图像的摄像头给用户，因此他可以调整他的脸。

I'm currently working on a project that use Facial Recognition. I therefore need a way to display the webcam images to the user so he can adjust his face.

我已经尝试了很多事情来获得由于使用更少的CPU尽量从摄像头的图像：

I've been trying a lot of things to get images from the webcam using as less CPU as possible:

• 的 VideoRendererElement


• WPFMediaKit


• DirectShow的库

• VideoRendererElement
• WPFMediaKit
• DirectShow-Lib

但没有他们都是很好...无论哪种方式速度太慢或者太CPU资源消耗。

But none of them were fine... Either way too slow or too CPU resources consuming.

然后我试过的Emgu库，我感觉棒极了。
起初，我试图在Windows窗体项目和正在更新的图像的图片框的。
但是，当我试图将它集成在我的WPF项目我被困在如何..

Then I tried the Emgu library and I felt great about it. At first, I tried it in a Windows Form project and was updating the image in a Picture Box. But then, when I tried to integrate it in my WPF Project I got stuck on how to pass my image to my Image control..

现在我的形象传递给我的图像控制，我有以下代码：

Right now, I've the following source code:

<Window x:Class="HA.FacialRecognition.Enroll.Window1"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="Window1" Width="800" Height="600"
        Loaded="Window_Loaded" Closing="Window_Closing">
    <Grid>
        <Image x:Name="webcam" Width="640" Height="480" >
            <Image.Clip>
                <EllipseGeometry  RadiusX="240" RadiusY="240">
                    <EllipseGeometry.Center>
                        <Point X="320" Y="240" />
                    </EllipseGeometry.Center>
                </EllipseGeometry>
            </Image.Clip>
        </Image>
    </Grid>
</Window>

和后面的代码：

private Capture capture;
private System.Timers.Timer timer;

public Window1()
{
	InitializeComponent();
}

private void Window_Loaded(object sender, RoutedEventArgs e)
{
	capture = new Capture();
	capture.FlipHorizontal = true;

	timer = new System.Timers.Timer();
	timer.Interval = 15;
	timer.Elapsed += new ElapsedEventHandler(timer_Elapsed);
	timer.Start();
}

void timer_Elapsed(object sender, ElapsedEventArgs e)
{
	using (Image<Bgr, byte> frame = capture.QueryFrame())
	{
		if (frame != null)
		{
			var bmp = frame.Bitmap;
			// How do I pass this bitmap to my Image control called "webcam"?
		}
	}
}

private void Window_Closing(object sender, CancelEventArgs e)
{
	if (capture != null)
	{
		capture.Dispose();
	}
}

我的猜测是使用的BitmapSource / WriteableBitmap的，但我没有不能让他们的工作...

My guess was to use BitmapSource/WriteableBitmap but I did not get them working...

谢谢！

推荐答案

我估计你正在寻找的是这样的：

I reckon all you're looking for is this:

Image<Bgr, Byte> frame = capture.QueryFrame();
pictureBox1.Image = image.ToBitmap(pictureBox1.Width, pictureBox1.Height);

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