Android :: How To Use Information From Sensor For Augmented Reality?

Jun 21, 2009

Could somebody (Mathias Agopian alias pixelflinger perhaps) please tell me how to use information from sensor for augmented reality stuff. Sorry am not much into graphics stuff but I did try my part to figure stuff out with help of documentation. Didn't miss the note: ""Note: It is preferable to use getRotationMatrix() in conjunction with remapCoordinateSystem() and getOrientation() to compute these values; while it may be more expensive, it is usually more accurate. Tried both. With the above method roll is always negative (in radians) of the roll returned by orientation sensor event. Not the real problem though as these are in the same +/-90 range but negative/opposite. One of these goes against the definition of roll in android documentation. I have the camera on landscape mode and did try with and without the suggestion: ""# Using the camera (Y axis along the camera's axis) for an augmented reality application where the rotation angles are needed : remapCoordinateSystem(inR, AXIS_X, AXIS_Z, outR); Yet no luck. Got a few lessons on quaternions etc. But am sure it is much easier than the mess am getting into. Say, orientation sensor event returns yaw, pitch & roll in say eO[] What are the next steps to get rotation matrix that I could use in opengl to rotate a augmented scene overlapping the camera preview?

Android :: How to Use Information from sensor for Augmented Reality?


Android :: Using SIFT For Augmented Reality

Aug 17, 2009

I've come across MANY AR libraries/SDKs/APIs, all of them are marker-based, until I found this video, from the description and the comments, it looks like he's using SIFT to detect the object and follow it around. I need to do that for Android, so I'm gonna need a full implementation of SIFT in pure Java. I'm willing to do that but I need to know how SIFT is used for augmented reality first. I could make use of any information you give.

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Android :: Augmented Reality Framework?

Dec 21, 2009

I am planning to develop an augmented reality application for Android phone. Does anyone know if there is any existing framework for augmented reality which could be used for such applications?

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Android :: Twitter - 360 / Yelp Augmented Reality?

Dec 14, 2009

Yelp and Twitter have both developed Augmented Reality apps for the iPhone. I remember seeing something like this for Android...maybe even developed by Google? I'd love to see these 2 apps come to Android. Twitter 360 Augmented Reality for the iPhone 3GS. Yelp Brings First US Augmented Reality App to iPhone Store

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Android :: AugSatNav / Augmented Reality Navigation?

Oct 22, 2009

I recently released an app I have been working on for, what seems like, most of the year. It is an augmented reality navigation application. What does that mean? Well, instead of using a 2D map to plot your route it draws a 3D route line upon a live camera view of the road/path ahead. This allows you to point your phone at the road, see which road is highlighted by the "route line" and then simply follow the line to your destination. It was a difficult application to build as the sensors on current phones are very "noisy" which makes it difficult to create augmented reality applications which rely on high accuracy. Nevertheless, I have been able to achieve an acceptable level of accuracy and the app works rather well. It currently supports walking and driving direction, however the driving mode is a BETA preview as although it works, can still be improved. I put together a video to demonstrate the driving mode.

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Android :: Car Finder AR 2.6 With Improved Augmented Reality

Sep 21, 2010

Forget about losing your car at the airport parking, shopping mall or outside the football stadium. Car Finder AR is an augmented reality app that proyects the position of your car on top of the camera view of your mobile phone. Use augmented reality view, Google Maps view or RADAR view to find your car. Just park, open Car Finder AR, go to the menu and save your current position, that's it!

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Android :: Augmented Reality / Mapping GPS To OpenGL?

Feb 2, 2010

I am writing an Android AR application and have my engine working but it contains a strange behaviour that I can't seem to get fix. I am overlaying an OpenGL surface on the camera image and am placing 3D objects in the view accordingly. If I use dummy data for the location of my AR objects, i.e. LAT 10 LON 10 become x=10 y=10 on the OpenGL surface, then the overlay works perfectly. However, if I use direct GPS coordinates for my LAT and LON (e.g. LAT 12.34567890 LON 100.23456789) then all my objects either move around their location or don't appear at all. I know there are issues around using floating points and the OpenGL framework, but I've been reading around and am still having trouble stopping this behaviour. Has anyone else had this problem? Should I be using a scaling factor between my GPS and openGL surface, if so what values are good? I tried scaling my LAT and LON by 1000000 to eliminate the floating point, but it didn't help and the performance was terrible.

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Android :: Qualcomm Augmented Reality SDK Working On Linux?

Nov 5, 2010

I'm trying to run the Image Target sample program but it keeps crashing. After some debugging it looks as though its failing to load some libraries. I copied them into the system/lib of the android device and it still doesn't seem to be working.

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Android :: Augmented Reality Framework To Display Geoloc Point?

Jun 3, 2010

I have to integrate to my app an augmented reality framework to display some geolocalised point. Does it exist a framework or an open source project? I have looked to NyARToolKit but it does not seem to have the fonction I need.

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HTC Incredible :: Play Augmented Reality Apps On Dinc?

Jul 7, 2010

Anyone every play with AR apps on their Dinc? I have been screwing around with Layers and its fun and all but not really useful for me. I don't live in an area where I can walk from one place to another. Takes a couple miles in a car to go anywhere and google maps is better for that. I do see a huge world open to gaming and hidden messaging for friends and family kinda like Geocaching but on a much locally and personal level. Leave a msg (either text or video) on your fridge for a family member. Tag your house with a msg for friends to come on in. Messages could be activated when your selected friends are within 100 yard range of your house. Sure you might say why not just send them a text or call them? What if you are not sure who is coming to a party. You can select a groups of friends to auto receive that msg only if they come so you don't look like a loser to everyone who is not coming. What about airports? An airlines can direct passengers to new gates just by AR. Passenger can use his or her phone to follow the highlighted trail leading to their new gate.

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Samsung Moment :: Augmented Reality / Camera Apps

Nov 1, 2009

I was wondering if anyone else has tried a 3rd party camera app (like CameraFX) or an augmented reality app yet. My Moment wont render the image from the camera correctly it's all green and staticy looking. sorry for the terrible description. Has anyone tried an AR or 3rd party camera app? Or can you and then tell me if your moment is working fine with it or not?

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HTC Hero : Wikitude Drive Brings Augmented Reality Sat-nav

Sep 2, 2009

Motor Stuff : Wikitude Drive brings augmented reality sat-nav to Android

looks really good folks!

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Games :: Beta Testers For Augmented Reality Photo Game

May 3, 2010

Do you enjoy photography and android apps? Are you excited about the potential behind augmented reality? Please contact me if you are interested in beta testing a location-based augmented reality game.

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Motorola Droid :: Augmented Reality Apps That Work For Droid.

Nov 25, 2009

Are there any of these apps that will work for the Droid.

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Games :: Augmented Reality Games?

Jul 28, 2010

I was wondering if you guys new of any augmented reality games.

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Android :: Getting Sensor Information From Native Code - C Or C++

Oct 12, 2010

Is this possible to access a sensor data form native code without using Java at all? I need to access to the sensor as fast as possible, but it seems like the "DELAY_FASTEST" parameter when registering an event change is not fast enough.

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Android :: No Light Sensor / Proximity Sensor Detected On Hero?

Feb 8, 2010

I have a HTC Hero here, and when I tried to get the list of available sensors on the device by calling ((SensorManager) getSystemService (Context.SENSOR_SERVICE)) .getSensorList(Sensor.TYPE_ALL); I get only the following sensors: D/SensorManager( 6302): found sensor: BMA150 3-axis Accelerometer, handle=0 D/SensorManager( 6302): found sensor: AK8973 3-axis Magnetic field sensor, handle=1 D/SensorManager( 6302): found sensor: AK8973 Orientation sensor, handle=2 D/SensorManager( 6302): found sensor: AK8973 Temperature sensor, handle=3 According to the specs, there should be a light and a proximity sensor on the Hero, and I've seen it in action (the automatic screen brightness adjustment) - so at least the ambient light sensor is definitely there. My question is then, why doesn't the getSensorList return for me the light and the proximity sensors?

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Android :: Difference Between Orientation Sensor / Magnetic Field Sensor

Nov 2, 2010

Does anyone know the difference between the orientation sensor and magnetic field sensor on Android?Since I've read that magnetometer is synonymous with digital compass I'm a little bit confused. What are they really?

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Android :: Is Orientation Sensor A Physical Sensor Different From Accelerometer?

Oct 30, 2009

Or it's just some virtual sensor the uses the data provided by the accelerometer and the magnetic field sensor to calculate the orientation?

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Android :: Add New Sensor Support In Sensor Framework

Nov 18, 2009

Can some one point towards any documentation/resources/ threads that can explain how a new sensor support can be added in android sensor framework?

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HTC Droid Eris :: My Home Sensor Is Not As Responsive As My Back Sensor

Feb 18, 2010

My home icon is way less responsive than the back icon which seems to be perfectly normal. Sometimes I have to "press" the home icon twice to get the "buzz" and have it move the screen. However the back icon works 99% of the time on the first press. IS there any adjustment I can make or should I bring the phone back. I have had it now for 2 weeks.

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Android :: Sync Information And Future Information

Jul 7, 2010

I am a Mac user (photographer/ videographer). I also rely heavily on my iPod Touch when mobile (i can often find a wifi signal when i am out and about). I use iCal on the Touch and iCal on my Mac as well as the address book on both everyday and as a Mobile Me user, my two devices sync so everything is mirrored and up to date. I also HATE AT&T for their terrible signal strength and coverage and have been a loyal Verizon customer for many years and this is why I don't have an iPhone. Okay, all that being said, is there an easy way to still use everything I love and rely on with my Mac (the calender and address book, mainly) and easily sync all of my existing information and future info to an Android based device? How easy is it to use an Android device with a Mac? I don't want to have to manually re-enter my entire address book into a new device.

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Android :: Augmented Ajax / Notifications?

Jun 4, 2009

Can augmented ajax use Notifications? Is this Android 2.0?

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Android :: Layer Reality Won't Install

Jun 24, 2010

just got my incredible today which btw I am loving it. However I have run into an annoying issue, Layer Reality will not install. I downloaded the app from the Android store and while it appears in my download list completed it will not install saying (download unsucessfull) after around 2 seconds or so. I am really wanting to check this app out.

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HTC Incredible :: Augmented Texting / Road SMS App?

Jul 15, 2010

Has anyone else seen this: The Samsung Galaxy S Goes See-Through, Another app I'd love to have, to rub in the face of my iphone friends! I've searched the XDA site & there are only port requests so far . . .

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Motorola Droid : Reality Check For Root Pros?

Feb 16, 2010

I've been a member here since I got my Droid and this place is great. Quickly I've seen a great divide since the Droid's been rooted and that divide has the tech geeks on one side and the noobs on the other. When the Droid came out everyone wanted this phone to help the Android software to grow as much as possible and were way more helpful.

I am in the middle of the noob/geek divide because I've scoured all the forums/youtube videos imaginable before I rooted. But the tech geeks need to realize is that the noobs need to be able to enjoy their phones just like you so the buzz about Android continues to grow.

Instead of bashing people for rooting with SMu (which i do understand why) help them by showing how to go from Sholes to pete's THE EASY WAY because noobs don't have time to scour these forums and don't get the terminology with rooting the hard way. If they screw up later then they will have no choice but to learn how to fix it themselves and in my experience, people only change/learn when they HAVE to not when they WANT to. Other than that, this is the best Android forum around.

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Android :: Enhanced Sensor API

Jun 2, 2009

I had a discussion with a few of the Android team member at Google IO, and I'd like to throw the idea out here for general brainstorming with the community. My view is that it is not a good approach to create "sensor-specific" APIs with iterative releases of the Android platform and SDK's. By this, I mean that instead of adding a "location API", and an "accelerometer API", and whatever comes next, we should create a "generic" sensor API that can work with a broad range of sensor types, including sensor configuration, demand read/write/configuration, event notifications, and other functions. In this way, 3rd parties could also add innovative sensing capabilities (or external sensors) to their Android devices which would be "instantly" supported by the platform. Well-known sensor such as collocation and acceleration could have agreed-to sensor names/namespaces, with full extensibility for additional sensor types. As an example, collocation as a 2D longitude/latitude is fine for some apps, but for "inside the building" applications or for other apps involving the need to accurate location of people or resources in 3 dimensions, it doesn't cut it. Additionally, one can easily envision inclusion of RFID, environmental, and other sensors in devices that could dramatically enhance the capabilities of Android applications.

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Android :: Example App That Uses Accelerometer Sensor?

Jan 23, 2009

Where can I find a simple example application that uses the Accelerometer Sensor?

I've seen the Open Intents applications, but I'd rather use the raw Android API, at least until I understand it a little better. I'm surprised at the lack of documentation.

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Android :: How Can I Find My GPS Location With GPS Sensor?

Aug 20, 2009

I am currently working with a HTC G1 and I am trying to retrieve my GPS position. But I can not understand very well the documentation. I wrote those lines, but they didn't work.It already write "provider == null" so I guess that "mgr.getBestProvider(new Criteria(), true);" returns null.

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Android :: Video Motion Sensor App?

Sep 9, 2010

I just got an android, and I love it. But I was wondering if there is an app where it records video, but it automatically starts recording when there is motion, and stops when the motion goes away. I believe its possible, just wondering if is been done.

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