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Scientific Breakthrough Lets SnappyCam App Take 20 Full-Res Photos Per Second

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Re: Scientific Breakthrough Lets SnappyCam App Take 20 Full-Res Photos Per Second

#51
post #31

Looks like they've an instagram-type site set up too. http://snappyc.am/2LdRMF28U0 http://snappyc.am/4HHxyCad7D http://snappyc.am/3G3i6QCJUk

Do these work for you? When I load the site, I see the photo scrub on the right hand side of the screen - and the slider moves up and down...but I don't see the big image loaded in the center of the screen where I expect the image to be. Unless it takes a while to load - in which case I was just being uber impatient.

[deleted]

Re: Scientific Breakthrough Lets SnappyCam App Take 20 Full-Res Photos Per Second

#52

Nice to see Jpap continuing to push the boundaries of what's possible. Aussie maths whiz supercharges net http://www.smh.com.au/articles/2007/11/05/1194117915862.html

@jpap, are the results shown in the article being used today?

Re: Scientific Breakthrough Lets SnappyCam App Take 20 Full-Res Photos Per Second

#53
post #31

Looks like they've an instagram-type site set up too. http://snappyc.am/2LdRMF28U0 http://snappyc.am/4HHxyCad7D http://snappyc.am/3G3i6QCJUk

Do these work for you? When I load the site, I see the photo scrub on the right hand side of the screen - and the slider moves up and down...but I don't see the big image loaded in the center of the screen where I expect the image to be. Unless it takes a while to load - in which case I was just being uber impatient.

I saw this a couple of days ago. Are you using Chrome?

It might be yet another Chrome canvas bug. :-(

Try Safari and let me know if you can? :-)

Re: Scientific Breakthrough Lets SnappyCam App Take 20 Full-Res Photos Per Second

#54

Nice to see Jpap continuing to push the boundaries of what's possible. Aussie maths whiz supercharges net http://www.smh.com.au/articles/2007/11/05/1194117915862.html

Thanks Raphael! :D

It's been an awesome, surreal experience, very much reminiscent of 2007. Fun times, relived. :-)

Re: Scientific Breakthrough Lets SnappyCam App Take 20 Full-Res Photos Per Second

#55

Nice to see Jpap continuing to push the boundaries of what's possible. Aussie maths whiz supercharges net http://www.smh.com.au/articles/2007/11/05/1194117915862.html

@jpap, are the results shown in the article being used today?

You'd have to ask Ericsson. ;-) I certainly hope so!

Re: Scientific Breakthrough Lets SnappyCam App Take 20 Full-Res Photos Per Second

#56

Any chance of this coming to Android soonish? This is seriously cool!

I might try to (naively) implement something similar for Android just to see how fast it goes without too much low-level fiddling. It really is pretty darn cool.

Re: Scientific Breakthrough Lets SnappyCam App Take 20 Full-Res Photos Per Second

#57

Any chance of this coming to Android soonish? This is seriously cool!

There's similar app on Android for years

https://play.google.com/store/apps/details?id=com.spritefish...

The claimed speed is 30 fps, the moar RAM the better I think.

Re: Scientific Breakthrough Lets SnappyCam App Take 20 Full-Res Photos Per Second

#58
post #9

Earlier quoted context omitted.

The fast JPEG codec was written for the ARM NEON SIMD coprocessor found in the iPhone. Most Android devices also sport the same architecture, so it is indeed possible. The code for the codec is written in mixed C and assembly, so it can be "easily" ported to Android by making use the JNI. While the R&D for the fast JPEG codec took about a year to perfect, the iOS app took just about the same time to get polished (inc…

Don't overlook the fact that the source for the stock Android camera is available under a commercial-use-friendly open source license and has a quite nice native android UI. You don't have to reinvent all the wheels unless you're stubborn. https://android.googlesource.com/platform/packages/apps/Came... I would buy that in a heartbeat. Unrelated, how quickly can you alter exposure settings? Can you get 30 pictures per…

That's really interesting. I wasn't aware of that. I'll have a look at it once social sharing is out the door.

I did consider getting into other aspects of iPhoneography, like HDR, etc. The trouble with HDR in particular is that there's no API access to direct the sensor into each of the bracketing modes.

In the case of HDR, it might be more fruitful to attempt some kind of image signal processing, similar to "Clarity" on Camera+.

I looked into that for a while, and I figured that Camera+ might be using some version of the Contrast Limited Adaptive Histogram Equalization (CLAHE) algorithm. In any case, what they've done is really neat from a DSP perspective. :D

Re: Scientific Breakthrough Lets SnappyCam App Take 20 Full-Res Photos Per Second

#59
It takes time and lots of effort, and ill argue is easier on a quasi standard platform (processor wise) but apps like this show how much juice can be squeezed out of the existing hardware by handcrafting the code.

Kudos, I just bought the app!

Re: Scientific Breakthrough Lets SnappyCam App Take 20 Full-Res Photos Per Second

#60

It takes time and lots of effort, and ill argue is easier on a quasi standard platform (processor wise) but apps like this show how much juice can be squeezed out of the existing hardware by handcrafting the code. Kudos, I just bought the app!

Thanks for the download! Let me know if you've got any feedback, I can be easily contacted through the app. :D

I'd just like to add that in addition to handcrafted code, choosing the right algorithm and always trying to "do less work" (less cycles, less data IO, better use of registers) makes a big difference.

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