Forums: Skydiving Disciplines: Wing Suit Flying:
Wingsuit Formation Analyzing Software

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Apr 20, 2010, 3:38 PM
Post #101 of 112 (598 views)
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 Re: [kallend] Wingsuit Formation Analyzing Software [In reply to] Can't Post
How about 2 (or more) separate cameramen with recording GPS's to create a synthetic aperture.

The cameras need to be looking the *exact* same direction with the *exact* same orientation. Think of looking straight forward with your eyes. Compare that with crossing your eyes. When you look straight forward, you get two slightly different variations on the same image that you can make sense of to create depth, because pieces of each image overlap. When you cross your eyes, it's just two very different images that you can't make sense out of.

The logic to writing a program that can create depth from two images is very close to what our brains do. You need to find objects in each image and then see how much they overlap horizontally. That amount of overlap gives your brain (or the program) the info it needs to calculate distance (relative to other objects in view). The images have to be very, very similar to perform depth calculations.

Unfortunately, cameras aren't as high resolution as our eyeballs and it's tough to write software as smart as our brains, so trying to accurately judge depths across wide spans or great distances is basically not an option with current technology.

kallend  (D 23151)

Apr 20, 2010, 7:49 PM
Post #102 of 112 (584 views)
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 Re: [LetsGoOutside] Wingsuit Formation Analyzing Software [In reply to] Can't Post
How about 2 (or more) separate cameramen with recording GPS's to create a synthetic aperture.

The cameras need to be looking the *exact* same direction with the *exact* same orientation. .

No. Think tomography. The cameras need to be looking from different directions. The math is very well established (I have even written some iterative reconstruction software myself for analyzing X-ray data). All you need to know is where the cameras are at any instant (hence the need for the recording GPS)

Apr 21, 2010, 1:54 PM
Post #103 of 112 (546 views)
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 Re: [kallend] Wingsuit Formation Analyzing Software [In reply to] Can't Post
This is getting way off track. If tomography was even applicable for this application, and if you did film from two angles with GPS on the flyers -- it'd be nearly impossible to calibrate time, GPS, and images in the video to result in useful data.

For exceptionally shaped formations, make an exception and do it by hand. For anything that has a pattern, we can feed it to a computer.

Baby steps. Start with formations on one level with basic patterns (where triangles can be formed between jumpers), and then let's move on from there.

(This post was edited by LetsGoOutside on Apr 21, 2010, 1:56 PM)

kallend  (D 23151)

Apr 21, 2010, 5:57 PM
Post #104 of 112 (530 views)
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 Re: [LetsGoOutside] Wingsuit Formation Analyzing Software [In reply to] Can't Post
This is getting way off track. If tomography was even applicable for this application, and if you did film from two angles with GPS on the flyers -- it'd be nearly impossible to calibrate time, GPS, and images in the video to result in useful data.

For exceptionally shaped formations, make an exception and do it by hand. For anything that has a pattern, we can feed it to a computer.

Baby steps. Start with formations on one level with basic patterns (where triangles can be formed between jumpers), and then let's move on from there.

I was responding to your comment that you would not trust your method for 3-d formations.

Quote:
You can do some cool illusions with it, but it's not something I would trust to judge 3D formations.

A tomographic method would be just fine for 3-d formations. So it's more difficult

(This post was edited by kallend on Apr 21, 2010, 6:01 PM)

Birdman_Mike  (D 25676)

Apr 22, 2010, 8:19 AM
Post #105 of 112 (497 views)
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 Re: [kallend] Wingsuit Formation Analyzing Software [In reply to] Can't Post
John,

Do you have some technical papers that describe the tomographic method that you described?

Thanks,

Purple Mike

kallend  (D 23151)

Apr 22, 2010, 11:50 AM
Post #106 of 112 (481 views)
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 Re: [Birdman_Mike] Wingsuit Formation Analyzing Software [In reply to] Can't Post
John,

Do you have some technical papers that describe the tomographic method that you described?

Thanks,

Purple Mike

I expect I could dig some out. It's been a while.

Apr 22, 2010, 11:58 AM
Post #107 of 112 (476 views)
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 Re: [kallend] Wingsuit Formation Analyzing Software [In reply to] Can't Post
A tomographic method would be just fine for 3-d formations. So it's more difficult
Go for it. It's all you.

SuperGirl  (D 30091)

Jan 22, 2011, 11:13 AM
Post #108 of 112 (396 views)
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 Re: [tvandijck] Wingsuit Formation Analyzing Software [In reply to] Can't Post
hey TomTom, check it out!
9way base diamond, practice jumps from day 1 of the vertical challenge (25 edition)

edited cause I forgot acknowledgements:
thanks to Kallend for doing all the work on his computer
and thanks to Scotty for the picture

(This post was edited by SuperGirl on Jan 22, 2011, 12:01 PM)
Attachments: 9waydiamond1.jpg (39.7 KB)

kallend  (D 23151)

Jan 22, 2011, 11:47 AM
Post #109 of 112 (389 views)
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 Re: [SuperGirl] Wingsuit Formation Analyzing Software [In reply to] Can't Post
hey TomTom, check it out!
9way base diamond, practice jumps from day 1 of the vertical challenge (25 edition)

Ahem - aren't you missing an acknowledgement?

Congratulations on a nice achievement. Now, if only the weather could cooperate.

(This post was edited by kallend on Jan 22, 2011, 11:49 AM)

tvandijck  (D 30374)

Jan 25, 2011, 11:28 PM
Post #110 of 112 (345 views)
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 Re: [SuperGirl] Wingsuit Formation Analyzing Software [In reply to] Can't Post
hey TomTom, check it out!
9way base diamond, practice jumps from day 1 of the vertical challenge (25 edition)

edited cause I forgot acknowledgements:
thanks to Kallend for doing all the work on his computer
and thanks to Scotty for the picture

looks awesome... Jarno was asking me to add 'support' for these rear-view flocks as well, if anyone has ideas for that...

I might bring a newer version to FnD7 if people have any additional requests...

DSE  (D 29060)
Moderator
Jan 26, 2011, 12:00 AM
Post #111 of 112 (341 views)
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 Re: [tvandijck] Wingsuit Formation Analyzing Software [In reply to] Can't Post
how difficult would an auto contrast/pickpoint be to generate, or even a best-guess on head point to speed the process?

helxen

Aug 29, 2011, 12:17 AM
Post #112 of 112 (280 views)
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 Re: [SuperGirl] Wingsuit Formation Analyzing Software [In reply to] Can't Post
Site seems to be down. Could anyone email me the program to helxen@gmail.com if you have downloaded it. It will be greatly appreciated.

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