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Quote:
Based on this, we think that Logitech BRIO is not practical in spite of some outstanding features like 90fps and 90 degrees field of view. But Logitech C922 looks very promising and could be treated as future replacement of slightly outdated Sony PS Eye.
This is my sole opinion on the matter:
I would agree with the above quote based on what I have researched also, but I have never seen any manufacturer specs on using multiple cams, 6 or more on one machine, but I guess when applicable this is handled in the individual device, or program SDK configurations and available bandwidth needs of each device and how powerful the machine is needed to run such a configuration, but for me personally, if the distributed recording feature is needed for just 6 RGB cameras, this would kill this choice anyway, even though I do have 2 usable recording machines, unless of course it showed outstanding results in the tracking process.
It seems anyone would need a more powerful machine, and even then would need additional add-on USB 3.0 cards, (depending on your level of motherboard), since most newer USB 3.0 ATX or above motherboards, especially ones using native USB 3.1 are combining the USB 3.0 and 2.0 into one controller, which means even if the mobo has 4 USB 3.0 rear ports, only 2 can be used at once with PS Eyes and I am sure this is the same for other USB 2.0 camera models as well, but if the mobo has available additional USB headers for extra USB ports there may be ability to use those together at a lower bandwidth overall, although I can only base this on my particular system components and some basic research into other components.
There may not even be a way to even run 6 Brio on one machine at all, even at lowest resolution 720p and even if powerful enough to do so, due to bandwidth, or SDK constraints, but at $200 each, it's not even a feasible choice to test it for most users.
Even the C922 at approx. $80 each (eBay) is a bit costly for not much more achievable tracking quality than a PS Eye, although those cameras would most likely work better in varying lighting conditions where PS Eyes struggle, if that would be a necessary need to a user.
Doesn't iPi Studio still only use 1200 x 720 max standard resolution in the view port anyway using a 1080p monitor?
Correct me if I am wrong here, but would this still mean with these other cameras it would only give better pixel clarity, not necessarily better resolution in iPi Studio?
Or, more range of usable view with iPi Recorder, or Studio tracking?
Also, with lower vertical FOV, it wouldn't lend any respect to smaller room size than the PS Eyes, or Kinects and this is a condition many users struggle with, the minimum room size I can use for 6 PS Eyes and to get a fairly usable ground capture volume of 10 x 12 ft squared, is 22 x 12 ft with a minimum of 2.5 m (8 ft) spacing from the edge of the capture volume at chest high, or slightly above chest high positioning, and using the side cameras at an 8 ft height at a 12 ft spread, I use these 2 side cameras primarily for better depth of field, hip and foot placement tracking.
(Speaking of only the 6 cam max Basic version set up):
Although it is possible to set all cameras at higher heights, this will also make the performer look a little smaller and can cause depleted quality in the tracking, especially in the shoulders when tracked by video is used and some issues with the head tracking, especially when not using a head mounted Move controller, as well as more occlusion of the arms by the body on bending over motions.
More detailed testing and tracking outcomes would need to be done by iPiSoft to validate the practical use of a C922 over the PS Eyes for now, but in time they may get this worked out and some samples released for comparisons, or if a need arises to upgrade to such cameras if the Sony drivers start to fail with newer operating systems, because I am sure Sony won't be updating the PS3 Eye Prime Sense drivers on their own.
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