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#apertus IRC Channel Logs

2013/11/04

Timezone: UTC


23:42
dmj_nova
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dmj_nova
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01:03
Bertl
good night!
01:21
FergusL
night !
01:21
FergusL
you're getting serious-er, someting must have changed
01:33
Kush
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se6astian
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Sasha_C
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Sasha_C_
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se6astian
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13:51
FergusL
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13:51
Sasha_C
Hi everyone. The meeting will be starting in 10 minutes right?
13:58
Sasha_C
oops, I see that it's scheduled on 11th November, not the 5th...
14:28
se6astian
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14:28
se6astian
latest article: http://cinescopophilia.com/first-4k-raw-pictures-from-the-axiom-alpha-camera/
14:29
Sasha_C
very nice :)
14:30
PhilippeJ
ah, was just reading it :-)
14:45
se6astian
I am off to the fab lab
14:45
se6astian
cnc milling and laser cutting for the enclosure
14:45
se6astian
see you
14:45
se6astian
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14:45
Sasha_C
have fun. I'm off to get some sleep
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Sasha_C
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FergusL
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FergusL
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18:56
Bertl
evening folks!
19:06
FergusL
hi Bertl !
19:07
se6astian
hello :)
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se6astian
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21:18
dmj_nova1
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21:46
mikkael
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21:47
troy_s
FergusL: If you see se6astian, let him know that the link I gave you in chat (GPU debayer) does exactly what he says - multiple approaches.
21:47
troy_s
VNG I believe delivers some of the better results currently.
21:48
FergusL
there is still some talk concerning it vs AHD I think, saw this on astrophoto boards
21:48
troy_s
And regarding file formats, there are only _two_ required: DPX and EXR. The rest is rubbish.
21:48
FergusL
my VNG implem is getting bigger
21:48
FergusL
it's almost ridiculous haha
21:48
FergusL
but almost done
21:49
troy_s
FergusL: Why would you not want to store the Bayered image in EXR? It is perhaps the most ideal for it as the image data is already linear.
21:49
troy_s
And a conversion to float is great if done correctly.
21:49
FergusL
I thought about that too
21:50
FergusL
but then, what are the solutions for debayering ? what software would want to eat that ?
21:51
troy_s
FergusL: Custom in-house chains
21:51
FergusL
of course
21:51
troy_s
FergusL: But EXR makes good sense. Even DPX with a 1.0 TRC gamma flagged is solid as it can store a truly raw data stream as it supports the integer formats as well.
21:52
troy_s
(AND buries timecode, AND is universal / canonical, AND etc...)
21:52
FergusL
that would certainly ease some of the process, actually : I still have to deal with file addresses, seeking a large file etc...
21:52
FergusL
EXR bayered would leave thinghs much more open, and easier, with oiio as an example
22:00
FergusL
know somehting about Cinema DNG ?
22:01
troy_s
FergusL: The only difference between DPX and EXR is that EXR is much more restrained with format.
22:01
FergusL
yes, float only iirc
22:01
troy_s
A) Float (half or full) and MUST be linear.
22:02
troy_s
DPX is a powerful format, but it is so powerful that it does almost too much, and leaves more room for operator error.
22:02
troy_s
But... and this is a big but...
22:03
troy_s
DPX is used generally for transfer between houses because it is the only format of the two that allows for a TRC to be specified and burned into the data.
22:03
troy_s
So an EXR is generally the entire chain within a post house, but intra-house or house to printer etc, would be DPX. A final "baked" image.
22:04
troy_s
(In-house minus say, matte paintings which will be coming from artist-paint tools and likely TIFF)
22:04
FergusL
why TIFFs ? that's what the artist tools provide ?
22:05
troy_s
FergusL: Because TIFF is the most robust format out of those applications.
22:05
FergusL
ok
22:05
troy_s
FergusL: If they were more capable of EXR or such, they would likely be used.
22:06
FergusL
what about the source -> editorial material step ?
22:06
troy_s
(most paint apps are display referred, and as a result don't handle EXR terribly super. Also, Photoshop has a really goofy legacy botchjob with alpha)
22:06
FergusL
what would be your ideal proposition ?
22:06
troy_s
Never happens
22:06
troy_s
Editorial is generated during logging or after a one-light.
22:07
troy_s
and once finished, ingested via whatever a pipe uses for grading. Resolve has the various EDL ingestions or even reconstruction from image, Filmlight is EDL methinks, etc.
22:09
FergusL
yes I see
22:11
Sasha_C
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