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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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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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?
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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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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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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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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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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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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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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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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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Sep 2, 2009
Motor Stuff : Wikitude Drive brings augmented reality sat-nav to Android
looks really good folks!
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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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Nov 25, 2009
Are there any of these apps that will work for the Droid.
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Jul 28, 2010
I was wondering if you guys new of any augmented reality games.
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Jun 4, 2009
Can augmented ajax use Notifications? Is this Android 2.0?
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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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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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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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Oct 19, 2010
today i meet the problem.i need technic can control the android machine from server.then i want send data from server to android with no request from android.
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Apr 14, 2010
I'm trying to open a dialog window, but every time I try to open it it throws this exception:
CODE:.................
I'm creating it by calling showDialog with the display's id. The onCreateDialog handler logs fine and I can step through it without an issue, but I've attached it since it seems like I'm missing something:
CODE:............
Is there something missing from this? Some questions have talked about having this problem when creating a dialog from onCreate, which happen because the activity isn't created yet, but this is coming from a call from a menu object, and the appContext variable seems like it is correctly populated in the debugger.
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Jun 3, 2010
I'm writing an application which connects to a back office site. The backoffice site contains a whole slew of JavaScript functions, at least 100 times the average site. Unfortunately it does not load them, and causes much of the functionality to not work properly. So I am running a test. I put a page out on my server which loads the FireBugLite javascript text. Its a lot of javascript and perfect to test and see if the Android WebView will load it. The WebView loads nothing, but the browser loads the Firebug Icon. What on earth would make the difference, why can it run in the browser and not in my WebView? Any suggestions.
More background information, in order to get the stinking backoffice application available on a Droid (or any other platform except windows) I needed to trick the bakcoffice application to believe what's accessing the website is Internet Explorer. I do this by modifying the WebView User Agent.Also for this application I've slimmed my landing page, so I could give you the source to offer me aid. package ksc.myKMB;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.Window;
import android.webkit.WebChromeClient;
import android.webkit.WebView;
import android.webkit.WebSettings;
import android.webkit.WebViewClient;
import android.widget.Toast;
public class myKMB extends Activity {
I already have JavaScript on the web browser on, the problem is the web view is acting to different from the web browser.
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Aug 15, 2010
I want to implement my own Tokenizer base on the file
"MultiAutoCompleteTextView.java",
but I encounter an error "com.android.internal.R cannot be resolved" when I try to
import "MultiAutoCompleteTextView.java" to my project.
code:.................
I haven't research any solutions to resolve this problem.How to correct "com.android.internal.R.attr.autoCompleteTextViewStyle" my own attr?
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Jan 11, 2010
1- Does Android Browser (Éclair code base) support the "plug-in" or not?
2- Why "Google Gears" support is removed from the clair code base?
I searched the forum and came to know that earlier version of the Android does not support it at all? Here is the link for that, but this query asked in Dec'2008.
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Jan 5, 2010
At first,I have a database created by using Ruby on rails.I just already implement insert function(HTTPPost) in my Android Application and it's work.But I don't know how to retrieve specific record from my databases and insert it back to specific record in Android (Like edit function in RoR)This is my insert code :
private void insertComment() {DefaultHttpClient client = new DefaultHttpClient();HttpPost post = new HttpPost("http://10.10.3.87:3000/comments");
// Configure the form parameters
List<NameValuePair> nvps = new ArrayList<NameValuePair>();
nvps.add(new BasicNameValuePair("comment[content]", t_comment.getText().toString();
nvps.add(new BasicNameValuePair("comment[id_account]", "1"));
nvps.add(new BasicNameValuePair("comment[id_place]", Integer.toString(position)I really try many ways out but it doesn't work and it takes very long time to fight with this piece of code. Actually, I really don't know how to specify RowID to HTTPPost.
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Sep 17, 2010
I am doing some android development, and now I need to send some android application generated data onto a remote server (a database)?How can I do that? can I use direct JDBC connection and sql?
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Oct 9, 2010
So i am making a android app, and i want it to be so if i call lets say 911 it sends my GPS coordinents to a certain IP, i know everything but how i make it so if i call 911 it sends the info and how i can make it send the info to the IP via 3g,
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Jul 10, 2010
I released updates of my apps yesterday and they are being hidden from android 1.5 and 1.6 phones.
This is due to a Market bug which hides apps with bluetooth permissions from android 1.5 and 1.6.
Come on Google fix the market. We spend countless hours making are apps work on ALL android versions and now you do this...
This issue has been raised since June, but has only affected me since i made an update to the market yesterday.
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Dec 23, 2009
What exactly are mock tests... I need to know the mock and performance tests available in android for testing android apps..what is the best tool for testing android apps and how..
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Aug 17, 2009
I'd like to add a menu option to the Android camera app. Is this possible to do using the current SDK? I know I need to add an intent-filter tag in my activity. But I don't know what I should put in the mime type. I want to be able to process the live camera previews if the user selects the menu option. So what do I put into the type tag of the intent-filter? Also I suppose I won't be using ALTERNATIVE or SELECTED-ALTERNATIVE for the category as I want to deal with the whole intent?
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