WPF+Emgucv实现在图像上画出感兴趣的区域 并进行掩膜获取 得到图像均值

先上效果图

XAML：

<Grid.RowDefinitions>


</Grid.RowDefinitions>

        <Grid>             <UniformGrid Columns="2">                 <ScrollViewer HorizontalScrollBarVisibility="Auto" VerticalScrollBarVisibility="Auto">                     <InkCanvas Name="ink" Background="Transparent">                     <Image Name="ImgShow" Source="/temp.png" IsHitTestVisible="False">                      </Image>                 </InkCanvas>                 </ScrollViewer>                 <UniformGrid Rows="2">                     <GroupBox Header="Mask" >                         <Image x:Name="imgMask"></Image>                     </GroupBox>                     <GroupBox Header="Result">                         <Image x:Name="imgResult"></Image>                     </GroupBox>                 </UniformGrid>             </UniformGrid>                       </Grid>                 <DockPanel Grid.Row="1" Margin="20">                              <Grid Grid.Row="1" VerticalAlignment="Center" >                     <Grid.ColumnDefinitions>                         <ColumnDefinition/>                         <ColumnDefinition/>                         <ColumnDefinition/>                         <ColumnDefinition/>                         <ColumnDefinition/>                     </Grid.ColumnDefinitions>                     <RadioButton Grid.Column="0" VerticalAlignment="Center" Content="绘制墨迹" Click="RadioButton_Click"/>                     <RadioButton Grid.Column="1" Content="按点擦除" Click="RadioButton_Click"/>                     <RadioButton Grid.Column="2" Content="按线擦除" Click="RadioButton_Click"/>                     <RadioButton Grid.Column="3" Content="选中墨迹" Click="RadioButton_Click"/>                     <RadioButton Grid.Column="4" Content="停止操作" Click="RadioButton_Click"/>                 </Grid>                         <TextBlock HorizontalAlignment="Left" VerticalAlignment="Center" Margin="20 0 0 0">颜色选择：</TextBlock>             <Grid x:Name="colorchk" Background="Black" Width="100" MouseLeftButtonDown="Grid_MouseLeftButtonDown" ></Grid>             <Button Width="100" Margin="20 0 0 0" Height="30" Click="Button_Click">开始计算</Button>             <TextBlock HorizontalAlignment="Left" VerticalAlignment="Center" Margin="20 0 0 0">兴趣区域平均值：<Run Foreground="#e03997" Name="txt_meanValue"></Run></TextBlock>                     </DockPanel>     </Grid>     </Grid> 

CS主要代码： //准备掩膜图像 Image mask = new Image(OldImage.Width, OldImage.Height); //设置全黑 mask.SetZero(); //把轮廓全部绘制成白色在mask上变成感兴趣的区域 类似roi for (int i = 0; i < contours.Size; i++) { CvInvoke.DrawContours(mask, contours, i, new MCvScalar(255, 255, 255), -1, LineType.AntiAlias, null, int.MaxValue); } //准备结果图像 Image Result = new Image(OldImage.Width, OldImage.Height); //显示 imgMask.Source = BitmapToBitmapImage(mask.ToBitmap()); //CvInvoke.Imshow("DrawContours", mask); //获取感兴趣的区域到结果图 OldImage.CopyTo(Result, mask); //显示 //CvInvoke.Imshow("mask", Result); imgResult.Source = BitmapToBitmapImage(Result.ToBitmap());