We could perhaps use the Accord.NET framework, as outlined here:
http://www.codeproject.com/Tips/561129/Face-Detection-with-10-Lines-of-Code-VB-NET

I am using the object module to create an image from different layers, and after am done i want to save it back to the DB as a Byte[].

How do I accomplish this, as I do not see any method from GeneratedImage class, and the documented option was to get a URL.

thanks for the great library.

Hi,

Can you please tell us how to set the quality parameter while using dynamic image.

Kind regards,

Hi,
I used the following code, and the saved image is black:

CompositionBuilder builder = new CompositionBuilder(); builder.WithLayer(LayerBuilder.Image.SourceBytes(streamToResize)) .WithGlobalFilter(FilterBuilder.Resize.To(newWidth, newHeight, ResizeMode.UniformFill)); builder.SaveTo(saveToPath);

Have you any idea why the image is black?

Thanks!

Hi! It seems cachePath attributes want be recognized.

Sorry but i'm new on github: maybe you simply need to (re)add something like this, on Configuration/CachingSettings.cs ?

[ConfigurationProperty("cachePath")]
public string cachePath
{
get { return this["cachePath"] as string; }
set { this["cachePath"] = value; }
}

This could be a configuration option to say 'anything older than X is flushed'.

Perhaps move ASP.NET-specific parts of NuGet package into a new package.

websitescreenshot is not work, on your website too.
Can you fix it please?
http://dynamicimage.apphb.com/extensions/websitescreenshot

After an AppDomain has been up for a while, DynamicImage sometimes fails to generate an image because of an exception thrown by WPF:

System.ComponentModel.Win32Exception (0x80004005): The operation completed successfully
at MS.Win32.UnsafeNativeMethods.RegisterClassEx(WNDCLASSEX_D wc_d)
at MS.Win32.HwndWrapper..ctor(Int32 classStyle, Int32 style, Int32 exStyle, Int32 x, Int32 y, Int32 width, Int32 height, String name, IntPtr parent, HwndWrapperHook[] hooks)
at System.Windows.Media.MediaContextNotificationWindow..ctor(MediaContext ownerMediaContext)
at System.Windows.Media.MediaContext..ctor(Dispatcher dispatcher)
at System.Windows.Media.MediaContext.From(Dispatcher dispatcher)
at System.Windows.Media.Imaging.WriteableBitmap.SubscribeToCommittingBatch()
at System.Windows.Media.Imaging.WriteableBitmap.Unlock()
at System.Windows.Media.Imaging.WriteableBitmap.InitFromBitmapSource(BitmapSource source)
at System.Windows.Media.Imaging.WriteableBitmap..ctor(BitmapSource source)
at SoundInTheory.DynamicImage.Util.FastBitmap..ctor(String filename, UriKind uriKind)
at SoundInTheory.DynamicImage.Sources.FileImageSource.GetBitmap()
at SoundInTheory.DynamicImage.Layers.ImageLayer.CreateImage()
at SoundInTheory.DynamicImage.Layer.Process()
at SoundInTheory.DynamicImage.Composition.CreateImage()
at SoundInTheory.DynamicImage.Composition.GenerateImage()
at SoundInTheory.DynamicImage.Caching.ImageUrlGenerator.GetImageUrl(Composition composition)
at SoundInTheory.DynamicImage.Fluent.CompositionBuilder.get_Url()

This looks to be related to the Dispatcher creating internal HwndWrapper objects. There is an SO question and answer here, which suggest that Dispatchers need to be cleaned up:

http://stackoverflow.com/questions/8995588/asp-net-throws-win32exception-when-creating-bitmapimage-cannot-find-file-specif

DynamicImage doesn't explicitly create threads, so there is nowhere obvious to plug that code in. Perhaps DynamicImage could maintain its own thread pool and do all image generation on one of those threads.

I did the installation and it put in the DynamicImage file in the App_Start folder, but I can't find the helper in the @html menu. Is there something else I have to do. I'm using MVC 5

Currently, error messages don't necessarily identify the layer or filter where the error originates. They should also specify whether value is too large or too small, and the allowed range (if applicable).

``@Html.DynamicImageTag(b => b.WithLayer(
        new PdfLayerBuilder().SourceFileName("~/Content/1.pdf").PageNumber(1)
            .WithFilter(FilterBuilder.Resize.ToWidth(500))
            //.WithFilter(FilterBuilder.Border.Width(1).Fill(Colors.Black))
            .WithFilter(FilterBuilder.DropShadow)
    ))`
public static class HtmlHelperExtensions
    {
        public static HtmlString DynamicImageTag(this HtmlHelper html, Action<CompositionBuilder> callback)
        {
            var tagBuilder = new TagBuilder("img");

            var compositionBuilder = new CompositionBuilder();
            callback(compositionBuilder);
            tagBuilder.Attributes["src"] = compositionBuilder.Url;

            return MvcHtmlString.Create(tagBuilder.ToString(TagRenderMode.SelfClosing));
        }
    }
`

The image url generating is http://localhost:56861/Assets/Images/DynamicImages/1bac431a5fbcacba541c34a24407dbdd94f13506c99074008c3fe5a9ca1ad3cf.jpg

But the image is not displaying

I have done this in local copy but would be nice to use the Nuget version

Hi.
I am using your library to create thumbnails for each page of .pdf-files.
Something like this (where variable file is of type File (my own class)):

using SoundInTheory.DynamicImage;
using SoundInTheory.DynamicImage.Fluent;

Composition composition = new Composition();
for (int page = 1; page <= file.PageCount; page++)
{
.PdfLayerBuilder pdfLayerBuilder = new PdfLayerBuilder().SourceFileName(file.PathPDF).PageNumber(page);
composition.Layers.Add(pdfLayerBuilder.ToLayer());
GeneratedImage bitmap = composition.GenerateImage();
///.......
}

My only problem is that the program hosting this is a WinForms client for .NET framework 3.5.
Since I am only using part of your library would it work for me build for .NET 3.5 and simply comment out lines preventing build?
Do you have any recommendations to solve this problem?

Best regards, Kristján

Hi,

I use PdfLayerBuilder to generate thumbnails of pdf files. These files are in my own domain and it works all good. But, now I have the requirement of generating thumbnails from pdfs in a different domain. Is it possible to do using DynamicImage library? or is there any other way to achieve this.

Thanks

https://github.com/tgjones/dynamic-image/blob/master/appveyor.yml Indicates that the package should be published to NuGet based on a successful build.
However, the package appears to be @ v3.1.1 on the NuGet site: http://www.nuget.org/packages/DynamicImage/

Hi

I have converted the App_Start class to be in vb.net and currently able to cache the images in App_Data. When trying to view the image using the url generated by DynamicImage class the image fails to load.

Are there any routes that I need to add to the site or am I able to override the cache location and url path generated by DynamicImage?

I am also using MVC5 but not the MVC method of loading the image.

Thanks

Hi,

Are Windows services also supported?