Olympic Games using Philips Carousel Effect

[jairovital]

I'm watching Olympic Games at TV and had noticed that this time they are using a special effect, I think called "The Other Guys" or "Philips Carousel" effect.

Like this one.

Are there any suggestion on how they achieve that?

I venture a guess:
1 - They shot the scenario before around the arena
2 - During the movement of the athlet, they stop in a given point
3 - Make a doll of him
4 - Match that scene with the previous one shoot before
5 - Rotate it towards the position of another camera
6 - Match the virtual scene with the real one
7 - Press 'play' button again

It's possible I'm completely wrong.
Somebody could play some guesses?

[poisondeathray]

I think it's the same as some NFL games - It's done in almost real time with multiple cameras at different angles that feed into a computer that reconstructs it in 3d - so you can rotate and orbit around the athletes

[jairovital]

If you pause one frame before rotate you'll see that there is a scene changing. It reveals that it is not in real time. The shootings were done in another time. And after rotation you'll see another scene change.

I was thinking that is similar to panorama stitching for photos and/or Google Street View composition with a static scene and then searching and matches the view of the second camera.

Good to read your comments, Poisondeathray! Welcome.

[poisondeathray]

I haven't seen the olympics clips you're talking about, but I said almost real-time . In the NFL replays, the effect is ready only seconds after the event as a replay - that's how fast the processing is

Maybe you can post a link to one of the Olympics clips you're talking about ?

[jairovital]

Maybe you can post a link to one of the Olympics clips you're talking about ?

I've already post it.
Post #1

Posting again here.

[poisondeathray]

Whooops I missed it

Yes, that's the same thing as NFL style replays (e.g. for superbowl) - they've been doing it for >10 years

It's done with 20-50 cameras in different positions

It's almost real time (compared to Philips Carousel or The Other guys - which take a lot more post production work)

Search for "Eyevision 360 degree replay"

e.g.
http://electronics.howstuffworks.com/eyevision1.htm

[jairovital]

> 10 years???
I'm missing things here, for sure...

That link (howstuffworks) rocks. Explains all I need to know.

Thx

[jairovital]

It's done with 20-50 cameras in different positions

Poison, are you still there? Have a look at this another sample.

I still have some questions about what you'd said:
1 - Why there are different backgrounds at the point that begins the effect, between the previous and post frames? It's clear that it wasn't the real-time scene, but a recorded one.
2 - Why we can see difference of the color of the clothes (? - what is the correct name for that cloth). It was purple and became red, at the computer render)

If it was various cameras, as you say, the image would match 100%. Or not?

[poisondeathray]

I don't know , it should be the same color . Maybe it was just a bad internet sample, or bad job matching cameras. Even when they revert back to 1 view, the colors remain changed

[jairovital]

Please, note that the clothes color is the same of the vault-horse (red). Bad job matching cameras is not the excuse.
And the video was captured directly from TV. It wasn't downloaded from internet.

Also, note the difference between frames:

and


Different backgrounds.

[poisondeathray]

I don't know, but the cameras don't match in color (the 2 live ones, beginning and end) .

The 1st camera might be main network camera (the ground side view with the dolly move as the athlete runs), but not plugged into the multiple camera replay system - hence the color difference . Often networks will "lease" the feed from other networks. e.g. this might be NBC's (american) camera, but the replay system might be BBC etc... So they might not have balanced or matched them. Notice the 1st camera view isn't included in the replay (where the outfit is clearly "pink").


I don't know why the background changes. It shouldn't. They might be using a different system. 360 degree replays for sporting events are usually done in similar fashion. I don't know if it's that network or just the low quality video, but it doesn't look as clean or crisp as other events like Superbowl.

You can view the video in this one, and it explains the same thing
http://360replays.com/html/