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HdrEffect Class

Applies local tone mapping to a single image to achieve an HDR-like effect.

Inheritance Hierarchy

System..::..Object  Nokia.Graphics.Imaging..::..HdrEffect

Namespace: Nokia.Graphics.ImagingAssembly: Nokia.Graphics.Imaging (in Nokia.Graphics.Imaging.dll) Version: 255.255.255.255

Syntax

C#
public sealed class HdrEffect : IClosable, 
	IImageProvider, IImageConsumer, __IHdrEffectPublicNonVirtuals
Visual Basic
Public NotInheritable Class HdrEffect 
	Implements IClosable, IImageProvider, IImageConsumer, __IHdrEffectPublicNonVirtuals
Visual C++
public ref class HdrEffect sealed : IClosable, 
	IImageProvider, IImageConsumer, __IHdrEffectPublicNonVirtuals

Examples

C#

This sample takes CameraCaptureTask result photo and applies a HDR effect to it.

Universal apps:

private async void captureButton_Click(object sender, RoutedEventArgs e)
{
    await mediaCapture.StopPreviewAsync();

    var stream = new InMemoryRandomAccessStream();
    await mediaCapture.CapturePhotoToStreamAsync(ImageEncodingProperties.CreateJpeg(), stream);
    stream.Seek(0);

    using (var source = new RandomAccessStreamImageSource(stream, ImageFormat.Jpeg))
    {
        // Create effect collection with the source stream
        using (var sampleEffect = new HdrEffect(source))
        {
            sampleEffect.NoiseSuppression = 0.3;
            sampleEffect.Gamma = 1;
            sampleEffect.Saturation = 2;
            sampleEffect.Strength = 0.3;

            // Create a target where the filtered image will be rendered to
            var target = new WriteableBitmap((int)(Window.Current.Bounds.Width), (int)(Window.Current.Bounds.Height));

            // Create a new renderer which outputs WriteableBitmaps
            using (var renderer = new WriteableBitmapRenderer(sampleEffect, target))
            {
                // Render the image with the filter(s)
                await renderer.RenderAsync();

                // Set the output image to Image control as a source
                ImageControl.Source = target;
            }
        }
    }
}

Silverlight:

private async void CaptureTask_Completed(object sender, PhotoResult e)
{
    // Create a source to read the image from PhotoResult stream
    using (var source = new StreamImageSource(e.ChosenPhoto))
    {
        // Create effect collection with the source stream
        using (var sampleEffect = new HdrEffect(source))
        {
            sampleEffect.NoiseSuppression = 0.3;
            sampleEffect.Gamma = 1;
            sampleEffect.Saturation = 2;
            sampleEffect.Strength = 0.3;

            // Create a target where the filtered image will be rendered to
            var target = new WriteableBitmap((int) ImageControl.ActualWidth, (int) ImageControl.ActualHeight);

            // Create a new renderer which outputs WriteableBitmaps
            using (var renderer = new WriteableBitmapRenderer(sampleEffect, target))
            {
                // Render the image with the filter(s)
                await renderer.RenderAsync();

                // Set the output image to Image control as a source
                ImageControl.Source = target;
            }
        }
    }
}
Visual Basic

Visual C++


Last updated 19 June 2014

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