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#apertus IRC Channel Logs

2013/08/24

Timezone: UTC


23:40
jucar1
hello
00:00
jucar1
he likes the project and asks me what is needed
00:16
Bertl
hey jucar1! how's going?
00:17
jucar1
hello
00:18
jucar1
well I was talking to lu_zero a hw and sw hacker from torino gentoo and ffmpeg as I told you
00:18
jucar1
asking him for helping here
00:18
jucar1
he likes the project and he didn´t know about it
00:18
jucar1
he is in freenode now too
00:19
jucar1
I asked him to come but some time ago he told me he was going to sleep ...
00:19
jucar1
lets see
00:19
lu_zero
joined the channel
00:19
lu_zero
hi
00:19
Bertl
welcome lu_zero!
00:19
jucar1
opa luca
00:19
jucar1
wellcome and thanks
00:19
lu_zero
jucar1: told me wonders about your project
00:19
jucar1
then bertl can tell you what is needed
00:19
Bertl
jucar1 told me that you like it and want to help out
00:19
jucar1
lu_zero: we are very enthousiastic about it also with nik (3d man)
00:20
jucar1
Bertl: lu_zero was inside some other hw projects in media very interesting too
00:20
jucar1
and he was also developping some stuff for streaming for the turin politecnic , and specially lu_zero is an excellent person :)
00:21
jucar1
sorry my network still very bad today, with cell phone, tomorrow will be good, new connection at home
00:21
lu_zero
^^;
00:21
Bertl
jucar1: not a psychopat like us?
00:21
jucar1
worst :)
00:22
jucar1
well lu_zero sove our lifes many times :)
00:22
jucar1
hacking
00:22
lu_zero
I'm one of the people behind evil projects such as Libav or vlc (or Gentoo)
00:22
Bertl
lu_zero: well, did you get an idea what apertus and axiom is about?
00:22
jucar1
aparently now he is half sleeping :)
00:22
lu_zero
so take your guess ^^;
00:22
lu_zer
is 3/4 asleep
00:22
jucar1
:)
00:23
Bertl
we can postpone this till tomorrow, if you want to go to bed
00:23
jucar1
well the contact is done
00:23
jucar1
but I supouse lu_zero is chatting lots ...
00:24
jucar1
lu_zero: go ahed, we need people , I want to have a camera in january :)
00:24
jucar1
max february
00:25
lu_zero
4k ?
00:25
lu_zero
Bertl: quick question
00:25
lu_zero
who is in charge of the drivers?
00:25
lu_zero
and how does it connect?
00:25
Bertl
I'm currently working on the axiom prototype, so technical questions in my general direction, apertus and general axiom project related questions are better targeted at sebastian
00:26
Bertl
we plan to use Linux on the Zynq as OS, so there will be drivers (to some extend) to access the video
00:26
Bertl
I've started maintaining a kernel branch for this purpose, but it isn't set in stone yet
00:27
Bertl
the heavy lifting (processing and buffering wise) will be done in the FPGA (PL part of the Zynq_
00:27
Bertl
)
00:28
Bertl
the PS (Linux) part mainly serves the setup and configuration purposes and 'some way' to capture frames or sequences
00:29
Bertl
(if you do not understand what I'm talking about, please do not hesitate to ask :)
00:30
jucar1
I think lu_zero is reading the website ...
00:30
lu_zero
I mean
00:30
lu_zero
4k
00:30
lu_zero
either you encode it on fly
00:30
lu_zero
or you need something able to push it to somewhere
00:31
Bertl
nah, we do not want to encode it, at least not lossy encoding
00:31
lu_zero
and it is a huge amount of data
00:31
Bertl
and I know, really huge amount
00:31
Bertl
for the prototype, the data path is like this:
00:31
Bertl
4k sensor data => PL (preprocessing) => 1080p => HDMI out
00:31
jucar1
excellent
00:32
Bertl
for capturing 4k frames, I'm not worried about the data
00:32
lu_zero
ah
00:32
lu_zero
so basically
00:33
Bertl
the final product (aka axiom) will feature several high speed serial ports
00:33
lu_zero
you just put a scaler and then use the normal hdmi to validate the sensor
00:33
Bertl
kind of, it's a little more complicated, but that's it basically
00:33
lu_zero
I have some experience with genicam devices
00:34
lu_zero
so I was curious about it
00:34
Bertl
we need to do dead pixel removal, debayering and then rescaling
00:34
lu_zero
debayering isn't a good idea =)
00:34
Bertl
well, as the sensor uses bayer pattern, and hdmi is not :)
00:35
Bertl
anyway, all this will happen in the FPGA on the fly
00:35
lu_zero
then nobody cares beside who has to program it once ^^
00:35
Bertl
the data will be buffered in DRAM, via the built in DMA controller
00:36
lu_zero
sounds interesting
00:36
Bertl
we might also do a proof of concept implementation of an overlay
00:36
Bertl
which can be overlayed in the hdmi stream
00:37
lu_zero
I can help probably mostly further down the road
00:37
Bertl
yes, I figured from the ffmpeg reference
00:37
lu_zero
(driver, capture integration, on-camera encoding and such)
00:38
jucar1
OT - lu_zero and in hw can you or do you know some good person ?
00:38
jucar1
(poli-people...)
00:41
lu_zero
hw wise nobody
00:42
jucar1
ok, then I go for keltron
00:43
jucar1
I come back soon. go to kitchen
00:45
lu_zer
goes to sleep
00:45
lu_zero
let me know it/when you need me =)
00:47
Bertl
have a good one!
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jucar1
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lu_zero
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se6astian
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12:19
se6astian
hello!
12:19
se6astian
ah sory, gotta leave again ;)
12:19
se6astian
paramedic shift :)
13:05
Bertl
morning everyone!
13:52
se6astian
good morning :)
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