Current Server Time: 12:49 (Central Europe)

#apertus IRC Channel Logs

2014/01/03

Timezone: UTC


02:02
Rambutan2000
joined the channel
02:26
Bertl
welcome Rambutan2000
02:48
Rambutan2000
Hi guys! Its Geordie here
02:49
Bertl
Hey Geordie! welcome to the channel!
02:56
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
02:56
Bertl
hehe, what folks do with their phones nowadays :)
02:59
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
02:59
Bertl
the web irc doesn't work?
03:43
Rambutan2000
left the channel
03:43
Rambutan2000
joined the channel
03:43
Rambutan2000
left the channel
04:30
Rambutan2000
joined the channel
04:31
Rambutan2000
Hi! I'm back using webchat, I litteraly haven't used IRC for about 10 years so didn't know this was here
04:31
Bertl
wb
04:44
Rambutan2000
I've been looking through the ToDo list, I can definitely help out with those
04:44
jucar
joined the channel
04:46
Rambutan2000
So it's 6:45? in Austria?
04:48
Bertl
yep
05:00
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?
05:05
Bertl
I guess nothing serious has been done in this regard yet
05:06
Bertl
it seems that professionals prefer a solid case which can be carried comfortably on the shoulder
05:11
Rambutan2000
yup, I'd be taking RED camera's as a base point and looking at some high end Sony gear
05:14
Rambutan2000
How do you guys usually trasfer larger files to each other? do you submit everything though Github?
05:14
Bertl
depends, upload services, web servers, etc
05:28
Bertl
sebastian will be up in an hour or so ... I'm off to bed now
05:28
Bertl
have a good one everyone!
05:30
Rambutan2000
seeya!
05:37
jucar
left the channel
06:06
jucar
joined the channel
06:10
jucar
left the channel
07:11
se6astian
joined the channel
07:13
se6astian
good morning
07:34
Rambutan2000
Morning!
07:34
Rambutan2000
it's Geordie here
07:39
se6astian
left the channel
07:40
se6astian
joined the channel
07:55
se6astian
Hi Geordie, PM!
07:57
Rambutan2000
hah yeah its afternoon here
08:10
se6astian
Geordie, do you see the private message window with your IRC client?
08:49
philippej
joined the channel
09:14
philippej
left the channel
09:45
Rambutan2000
left the channel
09:53
philippej
joined the channel
10:13
philippej
left the channel
10:54
philippej
joined the channel
10:57
philippej
left the channel
11:25
jucar
joined the channel
11:45
troy_s
R3D is _not_ a good "base".
11:45
troy_s
Alexa sure. F55. Even the F65 is a slightly odd monster.
12:46
jucar
left the channel
13:12
Bertl
morning everyone!
14:11
gcolburn
joined the channel
14:14
Bertl
wb gcolburn!
14:17
se6astian
good morning :)
14:19
se6astian
time to leave the office :)
14:19
se6astian
see you
14:20
se6astian
left the channel
15:33
philippej
joined the channel
15:44
se6astian
joined the channel
15:53
gcolburn
hello
15:54
se6astian
hi gabe
15:55
gcolburn
how's it going?
15:55
se6astian
good good
15:56
se6astian
Herbert created a histogram c program to run on the camera
15:56
se6astian
so I can now visualize realtime histogram data
15:57
gcolburn
oh wow, so are you streaming to HDMI and the histogram is overlaid?
16:00
se6astian
no
16:01
se6astian
its a commandline up that outputs 4x 4096 values
16:01
se6astian
*commandline tool
16:03
gcolburn
oh ok
16:05
gcolburn
so adjusting the black sun protection seemed to make a large difference in the FPN?
16:07
gcolburn
left the channel
16:12
gcolburn
joined the channel
16:13
gcolburn
just lost connection. I probably missed anything you said (if you did)
16:15
se6astian
no I waited for your return
16:16
se6astian
the last black sun protection measurements were inconclusive
16:16
se6astian
I captured darkframes
16:16
gcolburn
ah okay
16:16
se6astian
capturing 2 frames in a row each
16:17
se6astian
then subtracted one from the other (abs(a-b))
16:17
se6astian
no matter how I set the black sun protection the results were always almost entirely black ( no noise)
16:17
se6astian
I need to continue testing with normal scene image content
16:18
gcolburn
when we do subtractions we need to make sure there is some sort of offset
16:18
gcolburn
otherwise half the data might be missing
16:18
gcolburn
if its truncated to zero
16:19
se6astian
yes, thats why it uses abs()
16:20
se6astian
in image magick its actually called "difference" composite mode
16:20
gcolburn
but the results are allowed to be negative before abs() correct?
16:20
gcolburn
okay. i haven't used image magick in a long time.
16:21
gcolburn
by the way, the KAC-12040 data sheet has great definitions of how they measure every type of noise
16:21
gcolburn
its on page. 19 under "Test Definitions"
16:30
se6astian
I assume it allows negative results but moves them above 0
16:30
se6astian
ah interesting
16:30
se6astian
will check it out soon
16:34
Bertl
I did analyze the image data se6astian captured the last few days, and there are a few findings
16:35
Bertl
first, we can clearly identify temporal noise caused by sensel waiting for readout
16:35
Bertl
second, we have some power? issues with continous image acquisition
16:36
Bertl
or at least there was some offset caused by the readout which shouldn't happen and doesn't happen in the last image
16:37
gcolburn
interesting
16:38
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
16:46
gcolburn
what's AN01?
16:46
mars_
application note I think
16:47
gcolburn
oh ok
16:48
gcolburn
Berl: Have you had a chance to look at the LUT code I wrote and see if it'll work for your needs?
16:48
Bertl
no, sorry, didn't have much time yet
16:49
gcolburn
no worries. its very close to the form you emailed me, so I think it should work
16:56
se6astian
bbs
17:01
philippej
left the channel
17:28
jucar
joined the channel
18:02
gcolburn
left the channel
18:53
gcolburn
joined the channel
20:17
jucar
left the channel
20:23
rexbron
left the channel
20:23
troy_s
left the channel
20:24
rexbron
joined the channel
20:36
troy_s
joined the channel
22:57
se6astian
left the channel