I want to find user movement walking and tracking position and move camera accordingly in virtual reality app , not head movements like rotation , etc. So I am wondering whether this combination Gear VR with Samsung S7 edge will support my requirement or not.
Any suggestion will be appreciated , thank you.
GearVR is not meant to be a 6-DoF device, which is what you are asking (3 Degrees of Freedom means tracking of rotation, 6 Degrees of Freedom means rotation + position).
It is possible to achieve 6-DoF tracking with a Samsung Galaxy by using ARCore. A good starting point would be this GitHub project.
However, the results will most likely not meet your expectations in terms of usability. If you intend to use the original GearVR goggles, you'll notice that the camera is covered, so that would be a problem as well.
If you really want quality mobile 6-DoF VR (read: goggles, not a smartphone in your hands), you should look out for Vive Focus or Oculus Quest as a device.
Related
I'm working on an AR project (Unity) and I want to use an external camera instead of my Android's original one. I saw that Vuforia has such a feature - but claims that ny using that, Ground Plane detection wouldn't work at all and ModelTargets performances taking a hit.
I also saw EasyAR has CustomCamera and Camera2 lib in ARCore.
Question is: What's the best way to approach this? has anyone experienced using an external camera? and with what AR solution? (ARFoundation / Vuforia / EasyAR...).
2nd Question: What should I look for when buying said UVC? Any examples for one?
Also I'd like to hear about experiences with AR solutions regardless of the external camera thing.
Thanks in advance!
Unfortunately, this is unlikely to work with an external camera.
A key part of AR is having a precise calibration of the camera's optics. Without that, it's not possible to accurately analyze the world to draw new objects in it or other AR effects.
A UVC webcam doesn't come with any such calibration information. So it would have to be calibrated somehow, and the calibration information given to Unity's AR engine. I don't know if that's possible with Unity in some way.
Note that not that all internal camera devices on Android are calibrated enough for AR either, but the ARCore team is certifying devices that have sufficient calibration in place.
I'm working in unity(2018) and building for the HTC Vive VR headset. I had an idea to use the small camera on the front of the headset to make an AR system, as in run the video from the headsets camera to the headset view to then be able to overlap things from a unity environment. But unfortunately, I can't seem to find any examples of others doing this (other than the Tron blue outline system that the Vive comes with) though perhaps I'm not looking with the right keywords.
If anyone has seen something like this or know if it can be done I'd greatly appreciate it.
It is registered as a standard WebCam, so you should be able to use Unitys WebCamTexture.
But the resolution of the cameras is very low.
Anytime I edit the camera's field of view in Unity to 100 (instead of the default 60), either Oculus or Unity is limiting the FOV to 60 for my Samsung S7 with Gear VR headset. The 100 is ignored, and 60 is used when using the Gear VR to view the VR app.
Apparently, the support was disabled in March 2017 (or slightly before) to customize the FOV setting of a photosphere in Unity via the camera.
I've heard that the reason you can't change FOV is because it is a device-specific setting (S6 is different that S7, or Oculus Rift is different than Gear VR for Unity camera's FOV value).
Why?
The word "Virtual Reality" gives the answer to this question.
Just like you can't change fov of your eyes, you shouldn't be able to mess with fov in the app. Depending on device screen (or other factors), they have pre-setup the value so its most resembling to reality.
Moreover there could be other usability problems like VR-Sickness. So Unity took control of this.
Hope this helps.
I'm developing a VR app in Unity for the Samsung Gear VR and I'm trying to implement a pointer so the user can interact with the objects in the scene. When you look at distant objects it looks fine, but when you focus on close objects (which is highly needed for the app mechanics) the pointer appears to be duplicated, so you need to center the desired object in the middle of the points :P
What I've tried
-Using the GvrReticlePointer that comes with the GoogleVR package for cardboard
-Creating my own pointer by adding a canvas to the main camera with an image in the center
-Changing some of the Camera settings like field of view, stereo separation, etc.
-Configure my phone via a QR code http://imgur.com/fVrNrQk
Steps to reproduce (With canvas added to camera)
1.- Create a simple scene with a few objects to look at in Unity
2.- Set build settings for android
3.- Configure player settings to enable "Virtiual Reality Supported"
4.- Add Oculus as Virtual Reality SDK
5.- Set package name and minimum API level
6.- Add a canvas to the camera
7.- Add an image to the canvas, a cross will do the job
Observations
I'm using Unity 5.6.0b10 since google cardboard's site recommends using this version for the GoogleVR package. And I'm using the Samsung Gear VR with a Samsung Galaxy S6 edge + phone.
Solved
Apparently this is a well documented issue called voluntary Diplopia, and it's a human bug not a software one (read here, Unity's documentation, section The Reticle Interaction in VR).
The problem is trying to put the reticle at a fixed point in the user interface, like traditional 3D games. When looking at closer objects in VR this is going to cause this seeing double problem.
The solution is to position the reticle at the point in the 3D space the user is looking at. If he's looking closer, the reticle is drawn closer. Of course now you also have to scale the reticle accordingly, so the users can see it the same size no matter where they're looking at.
Unity also provides some example scripts about this, you can find them in the assets store, is called VR Samples.
Now I have performance issues (I'm working on mobile platforms): sometimes, when you turn your head fast you can see the reticle where it was drawn before. But looks way better than the double reticle version.
I am trying to make an mobile application that contains AR(Augumented Reality)-Mode using Unity3D. So I have connected my mobile device with my unity3d program, and the camera works fine. But when move the mobile device, the main camera inside unity program does not move the same orbit that the mobile device moves. Does any one know how to change or control the orbit of the main Camera in unity3d?
This could be happening due to a number of reasons. It could be due to non centered pivots, or coordinate systems for example.
Could you please specify which AR system are you using? As a side note, at work we recently had a project involving Unity3d and Metaio and it was a nightmare to bend the system to do what we needed, specially when we needed to do a lot of object positioning based on the local coordinate system.
When you refer to the orbit of the camera, I imagine it could be that the pivot of the camera is somehow offset and the camera is rotating around that offset. Or maybe that the camera is a child of the actual Game Object that is controlled by the AR system, in which case this parent node acts as a pivot to the camera.
In the picture below you can see that the camera is away from that center point and when it rotates it does it based on that center point, in other words the camera always tries to look at that center point and it gives that feeling of "orbiting" when it moves.
Here's the link to the image (I can't post pictures yet on this forum -.- )
http://i.stack.imgur.com/fIcY2.png