| ipisoft.com https://forum.ipisoft.com/ |
|
| 4 camera 360 degree current best setup? https://forum.ipisoft.com/viewtopic.php?f=2&t=4778 |
Page 1 of 1 |
| Author: | McWannabe [ Mon Nov 08, 2010 11:11 pm ] |
| Post subject: | 4 camera 360 degree current best setup? |
I read that the 360 degree camera setup might be the best with the new software. I've just now installed ipi for the first time, and I'm curious about a few things. 1. The cameras should NOT face each other, correct? Does this mean don't exactly face them together, or don't face them within X degrees of each other? 2. Two cameras would be at 2 meters (or, should they be at shoulder height), and two at a shorter height. Does it make any difference how they are arranged as in which goes where? 3. Should the cameras be pointed straight out (flat) or at an angle? There are a number of ways to set this up, so a diagram of the current best positioning would be appreciated. 4. I've got 4 florescent soft boxes. Should I point them at the 'stage' where the actor will be, or bounce them off the ceiling to get a more even dispersal of light? Shadows are a bad thing, right? BTW - I just tested, and on my dual Xeon, can only get 40 fps at 640x480 from 4 PlayStation 3's as my USB card just isn't handling a higher data rate than that (the internal USB ports can without a problem). Ahhhh!! Is 40 fps adequate? I guess I've got to try to track down tech support for the card. I hadn't anticipated a problem here. Apparently, using a PCI-X slot for USB is not that great of an idea (I'm out of PCI-E slots). Thanks! |
|
| Author: | Greenlaw [ Tue Nov 09, 2010 12:27 am ] |
| Post subject: | Re: 4 camera 360 degree current best setup? |
Hi McWannabe, 1. I think it means the cameras shouldn't directly look at each other. 2. I think it depends on the type of performance. For my set up, I have the two outer cameras set higher and the two inside cameras set lower. But I'm wondering if the outer cameras shoudn't be lower because they tend to look at my profile more. Might have to make an adjustment when I have time, but for now my set up is working fine and I don't want to mess with it too much until I'm done with our project. 3. If they are high up, they should be angled down. IMO, this gives the system some overhead data which can improve turning motions. If all the cameras are flat, the system has to take more guesses about what's happening in three-quarter views. At least, that's what I figure. 4. Yes, you want to avoid hard cast shadows, so softboxes are ideal lighting for this sort of thing. I have three soft boxes, and they are set between the four cameras facing the performer to create a very even lighting. You can kinda tell how they're arranged by looking at the soft shadows on the backdrop in this photo at our blog. I have a detailed diagram of my shoot space which I will post to my website very shortly. (I'm putting together a production log tonight for the website.) There are also two overhead florescent lights (standard garage lighting) to help soften shadows on the floor. My new computer is a quad-core system with a GTX 260, an internal SATA3 drive dedicated to video and capture, and two USB 3.0 cards; with this I'm easily recording 640x480 at 60fps. My Recorder configuration is two PS3 Eye cams plugged into on-board USB 2.0 ports and two PS3 Eye cams plugged into one of the USB 3.0 cards. The internal SATA3 drive is plugged into the second USB 3.0 card, which is also a SATA3 card. I had a wireless card in one of the PCI slots and I had to remove it to make room for a USB 3.0 card. Because I still needed wireless (mainly to access Google Docs and to check for iPi and Animeeple updates,) I bought a USB WiFi stick, which seems to work fine. I think 40fps is better than 30fps, but I'm not sure how it affects keyframes in your 3D program. Today I was surprised that my recent capture data actually come into Lightwave at 60fps, so I'll probably need to run keyframe reduction before rendering. (Of course I should not have been surprised since 60fps is the speed I recorded at. Duh!) :) Hope this helps. G. |
|
| Author: | skin12002 [ Tue Nov 09, 2010 1:53 am ] |
| Post subject: | Re: 4 camera 360 degree current best setup? |
Hi I have ipi set up in a circle/square and have been getting pretty good results http://www.youtube.com/watch?v=LiSYCD6fUD0 this is a test i did a couple of months ago. all the cameras are approx 2metres above the ground and I think Greenlaw is correct, that although the cameras in my setup, do in effect face each other, because they are angled down, to cover the capture space, they are not pointing directly at each other I will try and upload some stills showing the capture space to illustrate the camera positions hope that helps Steve |
|
| Page 1 of 1 | All times are UTC - 8 hours [ DST ] |
| Powered by phpBB® Forum Software © phpBB Group http://www.phpbb.com/ |
|