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Mostly AR and Stuff

Symbian foundation is considering options for improving Symbian Signed

David Wood from Symbian Foundation answered a question about Symbian Signed (mandatory digital signature for all Symbian OS app with advanced capabilities) in comments to his blog post about Symbian Release Plan :

“>What about Symbian Signed? Are there any plans to drop it, or at least relax it…?
A number of options for improving the operation of Symbian Signed are under active consideration.”

So it seems Symbian foundation is hearing to developers and end users lamentation and things could be better soon.

18, March, 2009 Posted by | Coding, Mobile, Symbian | , , , , | Comments Off on Symbian foundation is considering options for improving Symbian Signed

Nintendo DSi and Augmented Reality revisited

Returning to my old post about DSi and AR, it’s known now that main DSi CPU is 132 Mhz. That is marginally acceptable for markers based AR games. What kind of performance can be achieved for DSi ?
Here is my old Nokia 6600 demo which run at 107Mhz CPU phone. With DSi 133Mhz CPU+second 33Mhz CPU I’d estimate the same game can run on DSi at 8-10 fps. That’s is not a stellar, but nevertheless playable frame rate. Could be faster with some aggressive optimization or simplifications.

20, February, 2009 Posted by | Augmented Reality, Mobile, mobile games, Nintendo DSi | , , , , | 1 Comment

More on the battery life – solar powered phone

I had already written in this blog, the main factor slowing mobile AR development is the battery life. Faster CPU require more energy, and eating device battery very fast.
One way to work around the problem is to use different, task specific architecture for CPU units/coprocessors, thus to get more processing power with the same power consumption.
Another – get more energy. That’s what Samsung did with “”Blue Earth” phone. The phone has full solar panel on its back.
blue erath phone

PS. Some tricks to increase battery life.

14, February, 2009 Posted by | Augmented Reality, Mobile, Nokia N95 | , , | Comments Off on More on the battery life – solar powered phone

New version of Augmented Reality Tower Defense

A new version of AR Tower Defense – v0.03 Some bugs fixed (black screen bug)
and minor tracking improvement

12, February, 2009 Posted by | Augmented Reality, Coding AR, Demo, Mobile, Nokia N95 | , , , , , , , , , , | Comments Off on New version of Augmented Reality Tower Defense

Rumors about Nokia Symbian OS application store.

Engadget report Nokia may open a software portal for its Symbian OS applications, with a formal announcement to come at the Mobile World Congress. Rumors about Nokia Symbian application store were floating at Nokia developer forum couple of months ago. Actually I also have written about it in this blog post – “What iPhone can teach Nokia” :)

8, February, 2009 Posted by | Mobile, Symbian | , , , | Comments Off on Rumors about Nokia Symbian OS application store.

Nokia released cleaner for the “Curse of Silence”

Nokia released tool for FP1 phones, cleaning the “Curse of Silence” exploit form the phones.

29, January, 2009 Posted by | Mobile | , , , , | Comments Off on Nokia released cleaner for the “Curse of Silence”

Still no high-performance Symbian device…

Just checked GLBenchmarks for Samsung INNOV8.

Samsung GT-i8510 Innov8 performance details:
High-level 3D Performance
GLBenchmark HD ES 1.0 : 1602 Frames
GLBenchmark HD ES 1.1 : 628 Frames
GLBenchmark Pro ES 1.0 : 328 Frames
GLBenchmark Pro ES 1.1 : 35 Frames
CPU Performance
CPU Performance: Float : 988
CPU Performance: Integer : 4183

For comparison –

Nokia N95 8GB performance details:
High-level 3D Performance
GLBenchmark HD ES 1.0 : 1944 Frames
GLBenchmark HD ES 1.1 : 1766 Frames
GLBenchmark Pro ES 1.0 : 395 Frames
GLBenchmark Pro ES 1.1 : 570 Frames
CPU Performance
CPU Performance: Float : 1411
CPU Performance: Integer : 4254

Old Nokia N95(8Gb) still beat best of newish Symbian devices hands down.
Other platforms had 600+ Mhz devices long time ago, Palm switched to new generation CPU – OMAP3430. After two years no one still able to produce better high-performance Symbian device ?

25, January, 2009 Posted by | Mobile, Nokia N95, Symbian | , , , , , , , | Comments Off on Still no high-performance Symbian device…

Detachable magnetic lens for mobile phone

Interesting accessory – detachable lens which can be attached to any mobile phone. If phone camera is not magnetic enough there in adhesive magnetic ring to glue to the phone. (through smartmobile twitter)
magnetic lens

4, January, 2009 Posted by | Mobile | , , | Comments Off on Detachable magnetic lens for mobile phone

Markerless tracking

I’ve started experimenting with markerless tracking. I’ve captured several cityscape image sequences and processed them with SURF detector. I’ve used Nokia N95 viewfinder frames. Here descriptors were oriented:
Nokia N95 SURF
There are some corresponding features detected in both images, but their descriptors arn’t fit.
Interesting, upright, not oriented descriptors give little different picture – some new correspondences found, some lost.
Nokia N95 SURF

18, December, 2008 Posted by | Augmented Reality, Coding AR, Nokia N95 | , , , , , , , | Comments Off on Markerless tracking

Fullscreen version of AR Tower defense is up for download

AR Tower Defense is fullscreen now. I ‘ve also changed default mode from portrait to landscape.

6, December, 2008 Posted by | Augmented Reality, Demo, mobile games, Nokia N95 | , , , , , , , , | 2 Comments