I have quite strange augment reality case to implement. Most AR frameworks I've found can be classified on 2 groups:
GPS based ones
Based on visual markers (something like a QR code) located in real world.
Basically here is a list:
AndAr https://code.google.com/p/andar/
Mixare https://code.google.com/p/mixare/
DroidAr https://code.google.com/p/droidar/
But this does not fit my case, in simple words, I do need to place visual marker flying in a room near by one or several physical assets. I do have all needed coordinates, but I don't sure how I can show marker flying 2 meters in front of a phone, because all above mentioned frameworks positioning api based on degrees, minutes and seconds. Don't sure how I can correlate those 2 coordinates system.
I use BeyondAR for this. is small, simple, free and open source.
The Wikitude SDK allows you to put markers (so called GeoObjects) relative to a position. The position could be the user's position or any position defined by latitude, longitude, altitude (in your case this could be the initial user's position). The relative position is defined in meters north/east of the initial position.
For more information have a look at the documentation at: http://www.wikitude.com/external/doc/documentation/3.0/Reference/JavaScript%20Reference/index.html
It includes both Geo-based AR and Image Recognition & Tracking.
Disclaimer: I'm working for Wikitude
I use BeyondAR for this. is small, simple, free and open source. Here the linke
BeyondAR Framework
Related
Using arcore and/or sceneform, would it be possible to place circles accurately on a real life object. Lets say i had a real world table and a known set of coordinates where small ( 10mm ) AR "stickers" need to be placed. They could be on the top/side/underside of the table and need to be placed accurately to the mm. I am currently solving this problem with a number of fixed mounted lasers. would this be possible to accomplish using arcore on a mobile device - either a phone or AR/smart glasses? Accuracy is critical so how accurate could this solution using arcore be ?
I think you may find that current AR on mobile devices would struggle to meet your requirements.
Partly because, in my experience, there is a certain amount of drift or movement with Anchors, especially when you move the view quickly or leave and come back to a view. Given the technologies available to create and locate anchors, i.e. movement sensors, camera, etc it is natural this will not give consistent millimetre accuracy.
Possibly a bigger issues for you at this time is Occlusion - currently ARcore does not support this. This means that if you place your renderable behind an object it will still be drawn in front of, or on top of, the object as you move away or zoom out.
If you use multiple markers or AR "stickers" your solution will be pretty precise considering your location of your circles will be calculated relative to those markers. Image or marker based tracking is quite impressive with any Augmented Reality SDKs. However, having these markers 10mm can cause problems for detection of markers. I would recommend creating these markers using AugmentedImageDatabase and you can specify real world size of the images which helps for tracking of these images. Then you can check if ARCore can detect your images on the table. ARCore is not the fastest SDK when it comes to detecting images but it can continue tracking even markers are not in the frame. If you need fast detection of markers i would recommend Vuforia SDK.
I tried to achieve using google's cloud Anchors, but it has a limitation of 24hrs (after that the cloud anchors become invalid).
And another way is creating the replica of Unity, but that would be too lengthy process.
Any other ways please suggest me or any idea: https://www.insidernavigation.com/#solution - how they achieved it?
And how to save the common coordinate system in cloud or locally?
Current versions of ARCore and ARKit have limited persistence capabilities. So a workaround - which I think is what they use in that site you linked, is to use images/QR codes which they use to localise the device with a real world position and then use the device's SLAM capabilities to determine the device's movement and pose.
So for example, you can have a QR code or image that represents position 1,1 facing north in the real world. Conveniently, you can use ARCore/ARKit's to detect that image. When that specific image is tracked by the device, you can then confidently determine that the device is position 1, 1 (or close to it). You then use that information to plot a dot on a map at 1,1.
As you move, you can track the deltas in the AR camera's pose (position and rotation) to determine if you moved forward, turned etc. You can then use these deltas to update the position of that dot on your map.
There is intrinsic drift in this, as SLAM isn't perfect. But the AR frameworks should have some way to compensate against this using feature detection, or the user can re-localize by looking for another QR/image target.
As far as my knowledge is concern, This Virtual Positioning system has not been introduced yet in Google arcore. The link you provided, these guys are using iBeacon for positioning.
yup I believe it could be possible. Currently most developed ways have its limitation .I am working on to find another way with the fusion of Cloud Anchors with IBeacon.
im new to augmented reality but what is meant by the term marker ? i have done a web search and it says the marker is a place where content will be shown on the mobile device but im not clear still. Here is what i found out so far:
Augmented reality is hidden content, most commonly hidden behind
marker images, that can be included in printed and film media, as long
as the marker is displayed for a suitable length of time, in a steady
position for an application to identify and analyze it. Depending on
the content, the marker may have to remain visible.
There are a couple of types of marker in Vuforia, there are ones you define yourself, after putting them in to they CMS online, ones that you can create at run time and set markers that just have information around the edge. They are where your content will appear. You can see a video here where my business card is the marker and the 3d content is rendered on top. http://youtu.be/MvlHXKOonjI
When the app sees the marker it will work out the pose (position and rotation) of the marker and apply that to any 3d content you want to load, that way as you move around date marker the content stays in the same relative position to the marker.
And one final heads up, this is much easier in Unity 3D than using the iOS or Android native versions. I've done quite a lot and it saves a lot of time.
Marker is nothing but a target for your Augmented Reality app. Whenever you see your marker through the AR CAMERA, the models of your augmented reality app will be shown on!
It will be easy to understand if you develop your first app in augmented reality! :)
TLDR: Augmented Reality markers ~= Google Goggles + Activator
AR markers can be real-world objects or locations that trigger associated actions in your AR system when identified in sight, and usually result in some action, like displaying annotations (à la Rap Genius for objects around you).
Example:
Imagine you are gazing through your AR glasses. (You will see both what is displayed on the lenses, if anything, as well as the world around you.)
As you drive by a series of road cones closing the rightmost lane ahead, the AR software analyzes the scene and identifies several road cones in formation. This pattern is programmed to launch traffic notification software and, in conjunction with your AR's built-in GPS, obtains the latest information regarding what is going on here and what to expect.
In this way, the road cone formation is a marker: something particular and pre-defined triggers some action: obtaining and providing special information regarding your surroundings.
I am new for Augmented Reality though I know Android development.
I am trying to create an app whose main aim is to overlay the camera preview with some image if the device camera is pointing to a particular building or place. The camera preview will be overlaid with some image if and only if camera is pointing to correct building and correct direction. The overlay image & its related data will be uploaded from back-end. I have gone through mixar but it is not giving the correct solution.
In this I am not getting the Elevation / altitude concept. From where I will get this. Which opensource sdk is better for this app? How to crack this application?
For altitude you should forget it. The altitude return by GPS is terrible. Just crossing from one side of the street to the other side, the altitude returned by GPS could be different by 50 meter. Also, the direction of the back camera using sensors will not be accurate enough for buildings close together. If you restrict your app for known buildings or places then you can adjust using some image recognition but still it is very hard.
try to download wikitude sample app from wikitude website.it contain sample project simpleArbrowser that is what u are searching.hope this will help u
I don't know of any opensource sdk but I used Wikitude SDK which is quite useful for you implementation.The main advantage about wikitude sdk is that you can use your own server for back-end data. Which is not possible with the other alternative that is layar. And #Hoan is right about getting altitude information from GPS data is really inacurate but you can give it a go as the inaccuracy is only visible if you are really near the Point of Interest. It works okay for a distance greater than 250 meters or so(not confirmed). The only problem you might get is from the compass deflections which are really great when you are near a high EM field or near metals. But that's a chance you'd have to take and nothing can be done about it.
If you want to place AR objects based on the LAT and LONG of the location with a given altitude.
Well, now that's possible using Google's ARCore Geospatial API.
Docs:
https://developers.google.com/ar/develop/geospatial
I'm planning on doing an AR application that will just use GPS technology to get a location, and then use compass/gyroscope for tracking 6DOF viewfinder movements. Its a personal project for my own development, but I'm looking for starting places as its a new field to me so this might be a slightly open ended question with more than 1 right answer. By using GPS I am hoping to simply the development for my first AR application at the cost of its accuracy.
The idea for this AR is not to use any vision processing (relying on GPS only), and to display 3d models on the screen at roughly correct distances (up to a point) from where the user is standing. It sounds simple given games work in a 3D world with a view point and locations of faces/objects/models etc to draw. My target platform will be mobile devices & tablets potentially running one of these OS's WM6, Phone7 or Android.
Most of the applications I have seen use markers and use AR-ToolKit or ARTag, and those that use GPS tend to just display a point of interest or a flat box on a screen to state your at a desired location.
I've done some very limited work with 3D graphics programming, but are there any libraries that you think may be able to get me started on this, rather than building everything from the bottom up. Ignoring the low accuracy of GPS (in regards to AR) I will have a defined point in a 3D space (constantly moving due to GPS fix), and then a defined point in which to render a 3D model in the same 3D space.
I've seen some examples of applications which are similar but nothing which I can expand on, so can anyone suggest places to start of libraries to use that might be suitable for my project.
Sensor-based AR is do-able from scratch without using any libraries. All you're doing is estimating your camera's position in 6DOF using, and then performing a perspective projection which projects the known 3D point onto your camera's focal plane. You define your camera matrix using sensors and GPS, and perform the projection on each new camera frame. If you get this up and running that's plenty sufficient to begin projecting billboards, images etc into the camera frame.
Once you have a pin-hole camera model working you can try to compensate for your camera's wide-angle lens, for lens distortion etc.
For calculating relative distances there's the haversine forumula.
Moving to 3D models will probably be the most difficult part. It can be tricky to introduce camera frames into OpenGL on mobile devices. I don't have any experience on windows mobile or android, so I can't help there.
In any case have fun, it's really nice to see your virtual elements in the world for the first time!