SLARToolkit Issue Tracker Rss Feed

Closed Feature: GenericMarkerDetector [5559]

teichgraf — Thu, 16 May 2013 10:39:17 GMT

Implement a GenericMarkerDetector which is using the new IXrgbReader interface in his DetectAllMarkers(IXrgbReader) method:

interface IXrgbReader
{
int Width { get; }
int Height { get; }

int GetPixel(int, int);

// Get XRGB color for a set of x and y coordinates, only the RGB part will actually be used.
int[] GetPixels(int[], int[]);

int[] GetAllPixels();
}

Closed Feature: Windows Phone support + sample [5687]

teichgraf — Thu, 16 May 2013 10:39:17 GMT

Support for Windows Phone 7 as soon as real time camera access is possible. And a nice sample.

Closed Issue: jittering the image when projected onto the marker [6368]

teichgraf — Thu, 16 May 2013 10:39:17 GMT

I've opened a discussion over the jittering of the image (http://slartoolkit.codeplex.com/Thread/View.aspx?ThreadId=217564)
saying that there seems to be a jittering on the projected image on a marker (that's possible to see in the video in here http://vimeo.com/9713000 if anyone is interested)
teichgraf has answered that the solutions has to be fast.

I suggest the usage of the Kalman Filter (http://en.wikipedia.org/wiki/Kalman_filter) since it is contained on the original ARToolkit and it has not been implemented on the jARToolkit (java one, that has the same problem as seen in this SLARToolkit)

I Think this links can help you understand the filter: (It's a bit complex from what I heard, however the complexity lies in understanding the algorithim not on running it):
http://www.roninworks.com/?p=218

Hope it helps

Commented Feature: Windows Phone support + sample [5687]

teichgraf — Sat, 23 Jul 2011 11:02:52 GMT

Support for Windows Phone 7 as soon as real time camera access is possible. And a nice sample.
Comments: ** Comment from web user: teichgraf **

The Mango sample was added with revision 65838.

Commented Issue: jittering the image when projected onto the marker [6368]

teichgraf — Sat, 23 Jul 2011 10:42:05 GMT

Hey gleeforce,
Please read my earlier comment. I implemented a simple anti-jittering functionally. It's used in the new SL5 sample.

Closed Issue: Accuracy Tracking Markers [9157]

teichgraf — Sat, 23 Jul 2011 10:33:50 GMT

I find this problem to be consistent and reproducible. For example, the BalderSampleSL5 demo detects both the L marker as well as the SLART marker. The issue here is if the program is not sensitive enough to detect different markers, then it is as good as useless in terms of printing different markers. Can this be solved?
Comments:

There's a Confidence property at the Marker class. Just look at the SLARToolkit sample.
Read more details here:
http://slartoolkit.codeplex.com/discussions/243160

Created Issue: Accuracy Tracking Markers [9157]

gleeforce — Sat, 23 Jul 2011 08:48:14 GMT

Commented Issue: jittering the image when projected onto the marker [6368]

gleeforce — Sat, 23 Jul 2011 08:18:34 GMT

I agree that there's jittering. It's rather disturbing when it happens. I tried it for the 3D example and the object is shaking. Whether using Kalman filter or not, there should be some form of even a simple filter to smoothen the hard changes to the position of the detected marker. Hope this can be seen in the next code iteration.

Commented Issue: jittering the image when projected onto the marker [6368]

teichgraf — Wed, 13 Apr 2011 19:36:27 GMT

I implemented a simple anti-jittering functionality to the MarkerDetetor API. Just set the JitteringThreshold to 1 or more to get an anti-jittering effect.
http://slartoolkit.codeplex.com/SourceControl/changeset/changes/63951

Commented Issue: Using Balder for Silverlight [7964]

teichgraf — Wed, 12 Jan 2011 10:11:25 GMT

Hi!
I am design SLARToolkit project (mySLAR.rar) where I use a 3D object. For this goal I have used the Balder - 3D engine for Silverlight.When I run the project I get the Exeption:
Unhandled Error in Silverlight Application Object reference not set to an instance of an object. in Balder.Content.Silverlight.FileLoader.GetStream(String assetName) в Balder.Assets.AssetLoaders.Silverlight.ImageLoader.Load(String assetName) в Balder.Assets.AssetLoaders.AseParser.DiffuseScopeHandler(AseGlobals globals, Object scopeObject, String propertyName, String content) в Balder.Assets.AssetLoaders.AseParser.Parse(String assetName, List`1 lines, IAssetLoaderService assetLoaderService, IContentManager contentManager) в Balder.Assets.AssetLoaders.AseLoader.Load(String assetName) в Balder.Content.ContentManager.LoadInto[T](T asset, String assetName) в Balder.Objects.Geometries.Mesh.Prepare(Viewport viewport) в Balder.Node.OnPrepare(Viewport viewport) в Balder.Rendering.NodeRenderingService.Prepare(Viewport viewport, INode node) в Balder.Rendering.NodeRenderingService.Prepare(Viewport viewport, NodeCollection nodes) в Balder.Scene.Prepare(Viewport viewport) в Balder.Display.Viewport.Prepare(PrepareMessage prepareMessage) в Balder.Execution.MessageSubscriptions`1.Notify(T message) в Balder.Display.Silverlight.Display.Prepare() в Balder.Rendering.Silverlight.RenderEventHandler.Invoke() в Balder.Rendering.Silverlight.RenderingManager.ShowTimer(Object sender, EventArgs e) в System.Windows.Media.CompositionTarget.OnRendering(Object sender, RenderingEventArgs e) в MS.Internal.JoltHelper.RaiseEvent(IntPtr target, UInt32 eventId, IntPtr coreEventArgs, UInt32 eventArgsTypeIndex)

I don't understand why I get this error?
Comments: ** Comment from web user: teichgraf **

Please, first read the start site, documentation. download the source code, learn from the samples and modify them for your needs. This is the best way to learn new things in general.

Closed Issue: Using Balder for Silverlight [7964]

teichgraf — Wed, 12 Jan 2011 09:34:29 GMT

Your broken code is not an issue.

Commented Issue: Using Balder for Silverlight [7964]

teichgraf — Wed, 12 Jan 2011 09:33:59 GMT

Wow! Are you serious making an issue out of this?

This is not the place for such things and I won't fix your code anyway. There is a working sample in the repository. So just check the code out, learn from the sample and modify it for your needs.

Created Issue: Using Balder for Silverlight [7964]

grotsun — Fri, 24 Dec 2010 15:56:22 GMT

Hi!
I am design SLARToolkit project where I use a 3D object. For this goal I have used the Balder for Silverlight. This is my xaml code:
<StackPanel>
<TextBlock Text="This is a very interesting project" HorizontalAlignment="Center"/>
<Grid Width="640" Height="480">
<Rectangle Name="Viewport" Stroke="Black" StrokeThickness="2"></Rectangle>
<Canvas>
<Execution:Game Width="640" Height="480">
<Execution:Game.Camera>
<View:Camera Position="0,10,-15"></View:Camera>
</Execution:Game.Camera>
<Lighting:OmniLight Diffuse="Red" Position="0,0,-5"/>

<Geometries:Mesh AssetName="/my3DProject;component/Assets/audi.ASE" x:Name="myImg" ></Geometries:Mesh>
</Execution:Game>
</Canvas>
</Grid>
<Button Content="Start fun" HorizontalAlignment="Center" Click="ButtonClick"></Button>
</StackPanel>

and this is C# code:

using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;
using SLARToolKit;
using System.Windows.Media.Media3D;

namespace my3DProject
{
public partial class MainPage : UserControl
{
public MainPage()
{
InitializeComponent();
}

private CaptureSource _captureSource;
private CaptureSourceMarkerDetector _arDetector;
private void UserControlLoaded(object sender, RoutedEventArgs e)
{

_captureSource=new CaptureSource
{
VideoCaptureDevice = CaptureDeviceConfiguration.GetDefaultVideoCaptureDevice()
};

var vidBrush = new VideoBrush();
vidBrush.SetSource(_captureSource);
Viewport.Fill = vidBrush;

_arDetector = new CaptureSourceMarkerDetector();
var marker = Marker.LoadFromResource("Marker_SLAR_16x16segments_80width.pat", 16, 16, 80);
_arDetector.Initialize(_captureSource,1,4000,marker);
_arDetector.MarkersDetected += (s, me) =>
{
Dispatcher.BeginInvoke(() =>
{
var dr = me.DetectionResults;
if (dr.HasResults)
{
var centerAtOrigin =
Matrix3DFactory.
CreateTranslation(-myImg.ActualWidth*0.5,-myImg.ActualHeight*0.5,0);
var scale =
Matrix3DFactory.CreateScale(0.5,-0.5,0.5);
var world = centerAtOrigin*scale*
dr[0].Transformation;
var vp =
Matrix3DFactory.
CreateViewportTransformation
(Viewport.ActualWidth,Viewport.ActualHeight);
var m =
Matrix3DFactory.
CreateViewportProjection(world,Matrix3D.Identity,_arDetector.Projection,vp);
myImg.Projection =
new Matrix3DProjection{ProjectionMatrix = m};

}
});
};

}

private void ButtonClick(object sender, RoutedEventArgs e)
{
if(CaptureDeviceConfiguration.RequestDeviceAccess())
{
_captureSource.Start();
}
}
}
}
Maybe I wrong.

Commented Feature: Windows Phone support + sample [5687]

teichgraf — Fri, 05 Nov 2010 21:42:13 GMT

Support for Windows Phone 7 as soon as real time camera access is possible. And a nice sample.
Comments: ** Comment from web user: teichgraf **

We need real time, raw camera support and I contacted MS several times. They know that it's needed by many devs and will add it in one of the next versions.

Commented Feature: Windows Phone support + sample [5687]

knook — Fri, 05 Nov 2010 18:16:11 GMT

Support for Windows Phone 7 as soon as real time camera access is possible. And a nice sample.
Comments: ** Comment from web user: knook **

I'm waiting for AR on WP7 .............

Created Issue: jittering the image when projected onto the marker [6368]

GabrielGGuerreiro — Tue, 29 Jun 2010 22:18:59 GMT

Commented Feature: Windows Phone support + sample [5687]

SjanPjer — Fri, 04 Jun 2010 10:32:13 GMT

Support for Windows Phone 7 as soon as real time camera access is possible. And a nice sample.
Comments: ** Comment from web user: SjanPjer **

Contact Microsoft to get this on the WP7 RoadMap with a higher priority because it will NOT be able on the first version of WP7 (and probably not on the second)!

Closed Feature: Windows Phone 7 Build + Sample [5686]

teichgraf — Wed, 17 Mar 2010 12:37:37 GMT

A build for Windows Phone 7 as soon as real time camera access is possible. And a nice sample.
Comments:

Double post. See [workitem:5867]

Created Issue: Windows Phone support + sample [5687]

teichgraf — Wed, 17 Mar 2010 12:36:28 GMT

Support for Windows Phone 7 as soon as real time camera access is possible. And a nice sample.

Created Feature: Windows Phone 7 Build + Sample [5686]

teichgraf — Wed, 17 Mar 2010 12:35:20 GMT

A build for Windows Phone 7 as soon as real time camera access is possible. And a nice sample.