Question

我有一个这样的助手类：

 class helper
{   
   [System.Runtime.InteropServices.DllImport("gdi32.dll")]
   // System.Runtime.InteropServices.dll
    public static extern bool DeleteObject(IntPtr handle);
    public static BitmapSource bs;
    public static IntPtr ip;
    public static BitmapSource LoadBitmap(System.Drawing.Bitmap source)
    {

        ip = source.GetHbitmap();

        bs = System.Windows.Interop.Imaging.CreateBitmapSourceFromHBitmap(ip, IntPtr.Zero, System.Windows.Int32Rect.Empty,

            System.Windows.Media.Imaging.BitmapSizeOptions.FromEmptyOptions());

        DeleteObject(ip);

        return bs;

    }

当我点击这样的按钮时，我想阅读图像：

 private void Button_Click(object sender, RoutedEventArgs e)
    {
        //plaka resşm aytıştırma gelecek 
        imgPlate1.Source = img.Source;

      //  Mat image = CvInvoke.Imread(imgPlate1.Source,ImreadModes.Color);
       Mat image = CvInvoke.Imread(helper.LoadBitmap((System.Drawing.Bitmap)imgPlate1.Source,ImreadModes.Color));
       // ProcessImage(image);
      //  helper.SaveImageCapture((BitmapSource)imgCapture.Source);
    }

ProcessImage是我在读取图像后将使用的另一个函数但我不能把我的形象放在另一方面我对这一行毫无疑问：

imgPlate1.Source = img.Source;

我可以看到我的图像我的图像文件名称是imgPlate

Answer 1

我希望我能正确理解你的问题。如果我想从Image控件获取图像并将其放入EmguCV对象进行处理。虽然有点傻到如何做到这一点，那就是Windows。为此，请使用我包含的Image to BitmapSource转换器。 BitmapSource对象是一个ImageSource对象，因为BitmapSource派生自ImageSource。请参阅以下内容....

主窗口

<Window x:Class="ReadImageSourceWpf.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:ReadImageSoureWpf"
        mc:Ignorable="d"
        Title="MainWindow" Height="612" Width="512">
    <StackPanel Orientation="Vertical">
        <Image Name="img" Stretch="Fill" Loaded="img_Loaded"/>
        <Button Name="btnConvert" Content="Convert..." Background="Firebrick" BorderBrush="White" Click="btnConvert_Click" HorizontalAlignment="Center" VerticalAlignment="Center" Width="75" Height="40"/>
    </StackPanel>
</Window>

using Emgu.CV;
using Emgu.CV.Structure;
using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;
using System.Windows.Media.Imaging;

namespace ReadImageSourceWpf
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        #region Public Constructors

        public MainWindow()
        {
            InitializeComponent();
        }

        #endregion Public Constructors

        #region Private Methods

        private void btnConvert_Click(object sender, RoutedEventArgs e)
        {
            Mat readImage = new Mat();

            readImage = BitmapSourceConvert.ToMat((BitmapSource)img.Source);

            Image<Bgra, Byte> newImg = new Image<Bgra, byte>(readImage.Bitmap);

            BitmapSource bs = BitmapSourceConvert.ToBitmapSource(newImg);

            Window convImageWin = new ConvertedImageWindow((ImageSource)bs);

            convImageWin.Show();
        }

        private void img_Loaded(object sender, RoutedEventArgs e)
        {
            BitmapImage b = new BitmapImage();
            b.BeginInit();
            b.UriSource = new Uri(@"D:\OpenCV\opencv-3.2.0\samples\data\Lena.jpg");
            b.EndInit();
            var image = sender as Image;
            image.Source = b;
        }

        #endregion Private Methods
    }
}

结果窗口

<Window x:Class="ReadImageSourceWpf.ConvertedImageWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:ReadImageSoureWpf"
        mc:Ignorable="d"
        Title="ConvertedImageWindow"  Height="512" Width="512">
    <Grid>
        <Image Name="convertedImg" Stretch="Fill" />
    </Grid>
</Window>

using System.Windows;
using System.Windows.Media;

namespace ReadImageSourceWpf
{
    /// <summary>
    /// Interaction logic for ConvertedImageWindow.xaml
    /// </summary>
    public partial class ConvertedImageWindow : Window
    {
        #region Public Constructors

        public ConvertedImageWindow(ImageSource img)
        {
            InitializeComponent();

            convertedImg.Source = img;
        }

        #endregion Public Constructors
    }

转换方法

        public static Mat ToMat(BitmapSource source)
        {
            if (source.Format == PixelFormats.Bgr32)
            {
                Mat result = new Mat();
                result.Create(source.PixelHeight, source.PixelWidth, DepthType.Cv8U, 4);
                source.CopyPixels(Int32Rect.Empty, result.DataPointer, result.Step * result.Rows, result.Step);
                return result;
            }
        }


public static BitmapSource ToBitmapSource(IImage image)
{
    using (System.Drawing.Bitmap source = image.Bitmap)
    {
        IntPtr ptr = source.GetHbitmap(); //obtain the Hbitmap

        BitmapSource bs = System.Windows.Interop.Imaging.CreateBitmapSourceFromHBitmap(
            ptr,
            IntPtr.Zero,
            Int32Rect.Empty,
            System.Windows.Media.Imaging.BitmapSizeOptions.FromEmptyOptions());

        DeleteObject(ptr); //release the HBitmap
        return bs;
    }
}

希望这有帮助。

道格

Emgu.Cv WPF（C＃）如何从Image Box加载图像（image.source）

1 个答案: