Current Server Time: 10:25 (Central Europe)

#apertus IRC Channel Logs

2017/02/02

Timezone: UTC


00:24
davidak
joined the channel
01:40
arpu
left the channel
01:53
Bertl
off to bed now ... have a good one everyone!
01:53
Bertl
changed nick to: Bertl_zZ
01:55
arpu
joined the channel
02:01
intracube
changed nick to: intracube_afk
03:07
Spirit532
joined the channel
05:57
ItsMeLenny
left the channel
05:57
ItsMeLenny
joined the channel
08:14
se6astian|away
changed nick to: se6astian
08:25
dimaursu16
joined the channel
08:25
dimaursu16
left the channel
08:25
dimaursu16
joined the channel
08:28
davidak
left the channel
08:37
Bertl_zZ
changed nick to: Bertl
08:38
Bertl
morning folks!
08:46
se6astian
hello!
09:05
davidak
joined the channel
09:09
ItsMeLenny
left the channel
09:15
dimaursu16
left the channel
09:39
Bertl
off for now ... bbl
09:39
Bertl
changed nick to: Bertl_oO
09:46
Spirit532
has anyone here worked with LibTIFF?
12:49
jucar
joined the channel
13:05
se6astian
changed nick to: se6astian|away
13:21
alexML_
Spirit532: only installed it to compile ufraw; but if you have a specific question, you may get better answers
13:21
Spirit532
I had a specific question
13:22
Spirit532
I now have another specific question
13:22
Spirit532
I am writing a DNG file, which is valid(opens in Resolve & PS)
13:22
Spirit532
but a few tools like RawTherapee don't recognise the color
13:22
Spirit532
in my case, the entire image just shows up either red, green, or blue, with 0 on the other two channels
13:22
Spirit532
am I missing a weird tag?
13:22
alexML_
dng_validate output?
13:23
Spirit532
... how would it not be valid if PS & Resolve open it?
13:23
Spirit532
>_>
13:23
Spirit532
that, and rawtherapee OPENS it(which means dng_validate is good), but the colors a re dead.
13:24
alexML_
... just like a HTML page can be invalid, even if it renders fine in some particular browser ;)
13:24
alexML_
RT does not use dng_validate, fyi
13:24
Spirit532
but resolve & ps do
13:24
Spirit532
at least PS does, certainly
13:24
Spirit532
since it's an adobe product lol
13:24
alexML_
PS is closed source ;)
13:24
Spirit532
so is resolve
13:25
alexML_
so you can't tell, unless you have reverse engineered them ;)
13:25
Spirit532
it's adobe
13:25
alexML_
so?
13:25
Spirit532
adobe would only use the adobe sdk to open dngs
13:25
Spirit532
lol
13:25
alexML_
yes, but sdk != dng_validate
13:25
Spirit532
think logically
13:25
Spirit532
why would it not validate
13:25
alexML_
why would it?
13:25
Spirit532
flawless logic right there.
13:26
jucar
left the channel
13:36
ItsMeLenny
joined the channel
13:44
se6astian|away
changed nick to: se6astian
13:45
se6astian
changed nick to: se6astian|away
13:46
se6astian|away
changed nick to: se6astian
14:02
dimaursu16
joined the channel
14:02
dimaursu16
left the channel
14:02
dimaursu16
joined the channel
14:07
dimaursu16
left the channel
14:13
ItsMeLenny
left the channel
14:18
se6astian
changed nick to: se6astian|away
14:37
dimaursu16
joined the channel
14:37
dimaursu16
left the channel
14:37
dimaursu16
joined the channel
14:41
se6astian|away
changed nick to: se6astian
14:50
dimaursu16
left the channel
15:17
dimaursu16
joined the channel
15:17
dimaursu16
left the channel
15:17
dimaursu16
joined the channel
15:25
dimaursu16
left the channel
15:30
dimaursu16
joined the channel
15:30
dimaursu16
left the channel
15:30
dimaursu16
joined the channel
15:40
Spirit532
left the channel
15:47
dimaursu16
left the channel
15:51
dimaursu16
joined the channel
15:51
dimaursu16
left the channel
15:51
dimaursu16
joined the channel
16:02
dimaursu16
left the channel
16:08
se6astian
changed nick to: se6astian|away
17:05
se6astian|away
changed nick to: se6astian
17:11
davidak
left the channel
17:26
davidak
joined the channel
17:27
niemand
joined the channel
17:31
davidak
left the channel
17:49
davidak
joined the channel
19:06
intracube_afk
changed nick to: intracube
20:51
dimaursu16
joined the channel
20:51
dimaursu16
left the channel
20:51
dimaursu16
joined the channel
21:20
niemand
left the channel
21:22
GrahamM
joined the channel
21:26
GrahamM
Anyone active?
21:41
Bertl_oO
I'm kind of around ...
21:48
danieel
Bertl_oO: back to the weird top of the imager.. have you ever thought that the blacklevel can degrade the usable area by 10-15% ?
21:49
danieel
i mean.. if you got a 10 or 12 bit ADC, it will clip way below the digital max
21:49
danieel
*area as in terms of digital output codes
21:50
Bertl_oO
hmm?
21:51
danieel
im working on the BAE sensor, and it wont subtract any of the black level on chip.. and it is quite high
21:51
Bertl_oO
you mean you are losing data because of a high black level>
21:51
Bertl_oO
s/>/?
21:51
danieel
previusly we did something with sony.. and there it was on chip corrected.. so i started to wonder, how can they produce full-scale digital out?
21:51
danieel
yes
21:52
Bertl_oO
well, I'm pretty sure the sensor has some way to adjust the analog offset
21:52
Bertl_oO
it might not be well documented or obvious though
21:52
danieel
in the Kodak DS they said its done in digital domain
21:53
Bertl_oO
but even if it does not, you should be able to adjust the gain (analog or in sensor digital) to bring the full sensor range into the bit depth you read out
21:54
Bertl_oO
of course it's a tradeoff between depth and range
21:57
GrahamM
Bertl, just regarding HDMI, I don't know much about the technical aspects of HDMI. The issue with compatibility, are you reacting to a non-conforming EDID and not outputting a signal?
21:58
Bertl_oO
no, the Beta currently ignores the EDID completely
21:59
Bertl_oO
it just outputs whatever you configure
22:01
Bertl_oO
i.e. when you configure 1080p60 and output it to your monitor/TV and then you swap the cable to the viewer, it will get exactly the same signal
22:02
Bertl_oO
the signal itself is configure by gen_init.sh which is called from setup.sh
22:03
Bertl_oO
in gen_init.sh you can see a number of values controlling the width/height, display, sync and other parameters
22:04
Bertl_oO
most likely it only requires to play around with those to make it work on the viewer, but that can take some time and educated guesses
22:11
danieel
hdmi is not very much about guessing, the timings are well specified by CEA
22:11
Bertl_oO
well, yeah, but with many viewers that doesn't seem to help
22:12
Bertl_oO
but maybe our timings are wrong, please let us know if you do :)
22:12
danieel
i do make some fixed resolution stuff.. but that mostly requests the correct timing from the OS (preferred mode and no standard mode)
22:13
GrahamM
Iâm coming from a position of ignorance, so I wasnât sure how things were implemented.
22:13
danieel
only the RPi bootloader has trouble with that :)
22:17
Bertl_oO
in the near future, we will have the means to verify the signal we generate and thus correct any potential errors by comparing it to reference signals
22:18
Bertl_oO
but at the moment, it is basically adjusting things till it works
22:26
GrahamM
So there are enough tweaks within gen_init.sh, that I could potentially get a signal working with the BM VA4K?
22:26
Bertl_oO
I'm pretty sure
22:27
Bertl_oO
you can do all the adjustments at runtime, so no need to rerun everything
22:28
Bertl_oO
just issue the scn_reg commands on the shell and they will immediately take effect
22:28
danieel
the hw can do 3Gbps of data? (for 4k 422)
22:28
Bertl_oO
GrahamM: note that most display sinks take some time to adjust to changes, so it can take up to a few seconds till an image appears
22:29
Bertl_oO
danieel: the EDID would suggest so
22:29
danieel
I mean your transmitter side - the lvds pairs were for 1.6G no?
22:30
Bertl_oO
ah, then why don't you say so :)
22:30
Bertl_oO
no the current HDMI plugin modues top out at 1.5Gbit/s
22:30
Bertl_oO
*modules
22:30
danieel
so no 4k, 1080p60 top
22:31
Bertl_oO
the 4K HDMI module will be able to go beyond
22:31
danieel
one more thing.. the hdmi shall work without edid, so if you are not turning off the clock, changing the mode is hard to detect
22:31
danieel
and one another, the exact mode is communicated with a data island.. if you do not produce that, some receivers wont cooperate :)
22:32
danieel
basically same process as with nonbasic SDI modes
22:32
Bertl_oO
data islands can be generated with the current implementation, but they haven't been necessary for the devices we tested with yet
22:43
se6astian
off to bed
22:43
se6astian
good night
22:43
Bertl_oO
nn
22:43
se6astian
changed nick to: se6astian|away
22:46
ItsMeLenny
joined the channel
22:47
davidak
left the channel
23:18
dimaursu16
left the channel