Current Server Time: 19:48 (Central Europe)

#apertus IRC Channel Logs

2014/01/03

Timezone: UTC


03:02
Rambutan2000
joined the channel
03:26
Bertl
welcome Rambutan2000
03:48
Rambutan2000
Hi guys! Its Geordie here
03:49
Bertl
Hey Geordie! welcome to the channel!
03:56
Rambutan2000
Thanks! I was going to reply to Sebastian's email but then thought I should introduce myself here. I'm on my phone so please.forgive any odd spelling :p
03:56
Bertl
hehe, what folks do with their phones nowadays :)
03:59
Rambutan2000
Hah, mainly due to the fact I'm at work at the moment and need to get an irc client that supports connection through a proxy
03:59
Bertl
the web irc doesn't work?
04:43
Rambutan2000
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04:43
Rambutan2000
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04:43
Rambutan2000
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05:30
Rambutan2000
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05:31
Rambutan2000
Hi! I'm back using webchat, I litteraly haven't used IRC for about 10 years so didn't know this was here
05:31
Bertl
wb
05:44
Rambutan2000
I've been looking through the ToDo list, I can definitely help out with those
05:44
jucar
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05:46
Rambutan2000
So it's 6:45? in Austria?
05:48
Bertl
yep
06:00
Rambutan2000
Also Sebastian was talking about work on the physical design, has anyone ever done a study on the current "competition"? ie boards of likes and dislikes?
06:05
Bertl
I guess nothing serious has been done in this regard yet
06:06
Bertl
it seems that professionals prefer a solid case which can be carried comfortably on the shoulder
06:11
Rambutan2000
yup, I'd be taking RED camera's as a base point and looking at some high end Sony gear
06:14
Rambutan2000
How do you guys usually trasfer larger files to each other? do you submit everything though Github?
06:14
Bertl
depends, upload services, web servers, etc
06:28
Bertl
sebastian will be up in an hour or so ... I'm off to bed now
06:28
Bertl
have a good one everyone!
06:30
Rambutan2000
seeya!
06:37
jucar
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07:06
jucar
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07:10
jucar
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08:11
se6astian
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08:13
se6astian
good morning
08:34
Rambutan2000
Morning!
08:34
Rambutan2000
it's Geordie here
08:39
se6astian
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08:40
se6astian
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08:55
se6astian
Hi Geordie, PM!
08:57
Rambutan2000
hah yeah its afternoon here
09:10
se6astian
Geordie, do you see the private message window with your IRC client?
09:49
philippej
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10:14
philippej
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10:45
Rambutan2000
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10:53
philippej
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11:13
philippej
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11:54
philippej
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11:57
philippej
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12:25
jucar
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12:45
troy_s
R3D is _not_ a good "base".
12:45
troy_s
Alexa sure. F55. Even the F65 is a slightly odd monster.
13:46
jucar
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14:12
Bertl
morning everyone!
15:11
gcolburn
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15:14
Bertl
wb gcolburn!
15:17
se6astian
good morning :)
15:19
se6astian
time to leave the office :)
15:19
se6astian
see you
15:20
se6astian
left the channel
16:33
philippej
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16:44
se6astian
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16:53
gcolburn
hello
16:54
se6astian
hi gabe
16:55
gcolburn
how's it going?
16:55
se6astian
good good
16:56
se6astian
Herbert created a histogram c program to run on the camera
16:56
se6astian
so I can now visualize realtime histogram data
16:57
gcolburn
oh wow, so are you streaming to HDMI and the histogram is overlaid?
17:00
se6astian
no
17:01
se6astian
its a commandline up that outputs 4x 4096 values
17:01
se6astian
*commandline tool
17:03
gcolburn
oh ok
17:05
gcolburn
so adjusting the black sun protection seemed to make a large difference in the FPN?
17:07
gcolburn
left the channel
17:12
gcolburn
joined the channel
17:13
gcolburn
just lost connection. I probably missed anything you said (if you did)
17:15
se6astian
no I waited for your return
17:16
se6astian
the last black sun protection measurements were inconclusive
17:16
se6astian
I captured darkframes
17:16
gcolburn
ah okay
17:16
se6astian
capturing 2 frames in a row each
17:17
se6astian
then subtracted one from the other (abs(a-b))
17:17
se6astian
no matter how I set the black sun protection the results were always almost entirely black ( no noise)
17:17
se6astian
I need to continue testing with normal scene image content
17:18
gcolburn
when we do subtractions we need to make sure there is some sort of offset
17:18
gcolburn
otherwise half the data might be missing
17:18
gcolburn
if its truncated to zero
17:19
se6astian
yes, thats why it uses abs()
17:20
se6astian
in image magick its actually called "difference" composite mode
17:20
gcolburn
but the results are allowed to be negative before abs() correct?
17:20
gcolburn
okay. i haven't used image magick in a long time.
17:21
gcolburn
by the way, the KAC-12040 data sheet has great definitions of how they measure every type of noise
17:21
gcolburn
its on page. 19 under "Test Definitions"
17:30
se6astian
I assume it allows negative results but moves them above 0
17:30
se6astian
ah interesting
17:30
se6astian
will check it out soon
17:34
Bertl
I did analyze the image data se6astian captured the last few days, and there are a few findings
17:35
Bertl
first, we can clearly identify temporal noise caused by sensel waiting for readout
17:35
Bertl
second, we have some power? issues with continous image acquisition
17:36
Bertl
or at least there was some offset caused by the readout which shouldn't happen and doesn't happen in the last image
17:37
gcolburn
interesting
17:38
Bertl
we also can identify static row/column noise and differentiate it from dynamic row noise which looks exactly like the one described in AN01
17:46
gcolburn
what's AN01?
17:46
mars_
application note I think
17:47
gcolburn
oh ok
17:48
gcolburn
Berl: Have you had a chance to look at the LUT code I wrote and see if it'll work for your needs?
17:48
Bertl
no, sorry, didn't have much time yet
17:49
gcolburn
no worries. its very close to the form you emailed me, so I think it should work
17:56
se6astian
bbs
18:01
philippej
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jucar
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gcolburn
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gcolburn
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jucar
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rexbron
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21:23
troy_s
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rexbron
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troy_s
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23:57
se6astian
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