Graphics

Hello experts is there any way to use AR VR in trackless studio. i mean while i operate trackless studio is there any possible way to use suppose graphics like bar graphc etc in middle of virtual studio . with camera movement. 

Hi Sunil,

The Trackless Studio was intended for Virtual Sets and I think it also includes AR. However I'm not sure...

However there are quite a few number of steps to get AR working in XPression.

First of all, you need to select which Tracking-protocol you are using for your cameras (NCam, RossUX, StypeGrip or TrackMen). You do this by adding the Source in EDIT > Hardware Setup > Camera Tracking > Add...

You need to assign the Port where the Tracking Controller will send the data to.

Then you will need to configure the Tracking system to send the trackingdata to the IP Address of XPression and the port which was selected.

Inside your XPression scene, you will need to add a Perspective Camera and in the settings you need to select the Global Tracker in the Tracking option. This way, the tracking data which is received from the actual camera will be translated onto the Perspective Camera in your scene. So when the real camera pans left, the virtual camera in your scene should do the same. 

Next you will need to calibrate the lens which is being used on the camera. This is the most import step.Without a good lens-calibration the AR will not work properly.

Once the cameralens has been properly calibrated, you will need to select a reference point in the studio and then adjust your scene to match the same reference point.

Usually, I use AR on a cameracrane, so I will use the base of the cameracrane as the reference point. Then we will place a box inside the set and we will measure the distance from the box to the reference point. So the distance (Z-position), the height of the floor (Y-position) and the horizontal deviation (x-position).

Then in XPression you create a cube with the same dimensions as the box and you position it on the same distances from the reference point as the physical box.

But beware  /!\ The scale when using AR is different than when using XPression in a normal mode /!\

So 1 pixel in normal mode corresponds to 1 meter in AR-mode. So when your box is 60cm wide, you need to set the width to 0.6 and not 60 /!\ 

When your box is located 10 meters from the reference point, the z-position is 0.1 and not 10!

So when all of that has been set up correctly the cube in Xpression should be in the same position as the box in the real studio.

You might have to change the position of your objects in the 3D-space of your scene to match the position in the Virtual Studio.

Unfortunately It's not something which is easy to explain ;-).

The next time I do an AR-project I will record the process.

But just know that AR takes a lot of time to prepare so make sure you get that time ;-)

hello , kenneth thank you for your reply but i am talking about trackless , not with any other camera iam talking about built in camera in trackless studio . 

Sorry, I read over the Trackless Studio part.

But then I don't understand your question. If you have a Virtual Studio, you are probably already using a Perspective camera inside your scene. Then you just need to add the graphics on the position that you want and just build the animations with your camera.

How can i trigger those graphics as per my need ? any idea.  do i need to make graphcis in another scene or i need to built within virtual studio . ?

Well since you are using one scene as your virtual set, and you are using the Perspective camera within that scene, you will need to create your animations inside your virtual set scene.

So you will need to create separate SceneDirectors for the individual graphics.

In those Scene Directors you will need to create the graphics.

I think you are also using the Ross UX-interface to control the camera movements.

I'm not familiar with Ross UX on how to trigger the animations, but I assume it's quite simple.  

Sunil,

I just had a look to some of the tutorials about Trackless Studio which confirmed my suggestions. So you basically have to create separate Scene Directors with the Graphics that you want to show inside of your Scene 1 or Scene 2.

You then have to use triggers to trigger these Scene Directors.

When you look at the video at https://youtu.be/tiKBnO0jBic , they demonstrate how you can recall additional scenes, but you also have a tab called Scene Director where you can recall a Scene Director.

I know what you mean to say but i am talking about a graphics that is include in virtual studio with camera. as i move camera in virtual studio those graphcis should movie according to camera rather then onair in front. 

any idea ?

iam talking about AR vr in like vizrt. you can check this video in 3.10 

https://www.youtube.com/watch?v=znlpeoH7q5s this is ar and vr