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| I can't get 640 x 480 https://forum.ipisoft.com/viewtopic.php?f=2&t=5653 |
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| Author: | SebasProulx [ Thu Dec 08, 2011 4:12 pm ] |
| Post subject: | I can't get 640 x 480 |
Hi, we have been using iPi at DigitalDimension for a few weeks now, and I must say that it works pretty well and it is a wonderfull tool for our animation team, but there is somehing that have been bothering me. When I capture the videos, I always try to capture a 640x480 video, with 6 PS3Eye cameras, using diffenrent framerate. It seems to wotk just fine, but, when I look at the video's resolution, I always get 1920x960. So if we divide 1920 by 6 and 960 by 4, we get 320 X 240... So where is the error? Where is my 640x480? I have the same issue if I try with less camera. Would I get 640x480 with a better computer or there is just something that I don't get? Here are my computer's specs: System Type: x64-based PC Processor(s): 2 Processor(s) Installed. ( 2 x Quad Core ) [01]: Intel64 Family 6 Model 26 Stepping 5 GenuineIntel ~2394 Mhz [02]: Intel64 Family 6 Model 26 Stepping 5 GenuineIntel ~2394 Mhz Total Physical Memory: 12,286 MB Available Physical Memory: 10,338 MB Virtual Memory: Max Size: 24,569 MB Virtual Memory: Available: 22,568 MB Virtual Memory: In Use: 2,001 MB NVIDIA GeForce CTX 275 Total Available Memory: 5374MB Dedicated VIdeo Memory: 1792 MB System Video Memory: 0MB Shared System Memory: 3582 MB Thank you |
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| Author: | Greenlaw [ Thu Dec 08, 2011 6:45 pm ] |
| Post subject: | Re: I can't get 640 x 640 |
That's actually correct and it has to do with how the data is stored in each channel when using RAW Bayer. When using RAW Bayer, a pattern used in the channels so that when all channels are combined and properly interpolated (or debayered,) it forms a full 640 x 480 resolution image. This is not a scaled image but an actual 640 x 480 image. I seem to recall that there was a more technical explanation of this a while back in these forums but that's my 'layman's' version. :) If you want more info, look here: http://www.weisscam.com/lexicon/b/bayer ... ering.html This probably explains it better than I can. G. |
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| Author: | SebasProulx [ Fri Dec 09, 2011 7:27 am ] |
| Post subject: | Re: I can't get 640 x 640 |
Mystery solved, thank you! |
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