Sensor Fusion on Android Devices: A Revolution in Motion Processing

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[kylemichaelbecker]

@ the question about a dynamic x and y reading, with a static z value, my first guess would be that x and y would reflect lat, long; wheras your altitude(z) may be fairly constant. hope this sheds light

[dnumdug]

Glad I got an simple explanation and understanding on those things... (!!).

Is this a IQ test or what?..

[tookiewiliams]

I have Samsung Galaxy S2 and I'm experiencing with an issue that's annoying me very much.

When i do "auto rotate" , the rotation goes after 4-5 seconds.

I've done the calibrations and all that stuffs that you will find on google or forums.

Also, i've checked secret code *#0*# , and at Accelerometer Sensor i get:

ACC Raw Data - X: changing numbers, y: changing numbers, z: 1024 ( z is not changing like X and Y)

In this case, is my Accelerometer Sensor broke Physicaly or what?! ?!

[Sentilon]

is anywhere the current presentation to download?

[gnychis]

great description of why position using the sensors is challenging, thank you

[nyehnyi]

the best online lecture i ever watch..thank you so much sir

[Klem98]

Hi , where can i find an api to use this sensor fusion algorithm ?



[Gunner3210]

Wow, we designed the exact same thing to use for our own sensor fusion algorithm.

Never knew that Google was using something exactly the same. Talk about parallel innovation!

[novellterminator]

Great talk. Is there any device manufacturer can add to future phones to give precise position in 3D space that can be used to give relative position to where you where when you started measuring with the device? I think this would take virtual reality to a whole new level! Image being able to walk around in a room that is not real, with precise positioning!

[nunojpg]

@novellterminator It's all about the drift over time you need. Airplanes and submarines can have less drift in one hour than the phone sensors in 10 seconds. If you are looking to the same precision in your phone, it is still orders of magnitude of size and price away.

[xmripper]

Clever!

[ebutemetube]

Looks like the android didn't like this.

[kokopelli314]

Very well done. Simple and concise!

[csguy12]

Cool video :)

[csguy12]

sounds like saying David Sex, lol.

[cavins16]

ooh all of the big words and stuff make stuff look cool

[Renarudo]

Seriously, someone disliked this video? A Tech talk where developers are discussing how to further push the platform?

What the hell is wrong with people? Is the trolling that serious these days? Get a life.

[mclaarson]

you could use the linear movement by the mouse to exchange clicks you would need a base default matrix

[ProgramMax]

This talk is amazing. You were able to take a difficult problem and explain its solution in a simple way. Moreover, you didn't do it by dumbing it down.

I would like to learn more. For example, I understand how the gyro can be used to assist in accelerometer readings. I get that we no longer need a low pass filter. But I don't understand HOW to do that. Is there a link somewhere explaining that process? Also I don't yet understand why the compass is so important. To help us find down (gravity)?

[ballystix]

@ProgramMax

I believe you would need to write out the filter as a bunch of difference equations (which is basiclly the discrete form of a differential equation describing the filter response).... alternatively you can try using fourier/s-domain analysis but i doubt that can done easily on a device like that.

[ProgramMax]

@ballystix

Thank you for the response. Unfortunately, I don't quite understand what you are telling me. Is there a friendly website to help me learn what you mean? I'll hit up wikipedia and try to piece it together. But if you have a nice tutorial or the likes I would really appreciate it.

[CurtHowland]

Thank you.



[invensense1]

Edit: In the slide on "double integration", the total time of those data sets are actually 10 seconds, not 1 second. --- David Sachs

[DoctorDaniel311]

2nd

[ramonalisa]

euler is pronounced oiler because it is a german word. eu makes the sound oi. kind of like the strange combinations in english such as oo, ew, aw, au, ou, ow, etc....you get the picture.