4:4:4 10bit single CMOS HD project - Page 119 at DVinfo.net

Go Back   DV Info Net > Special Interest Areas > Alternative Imaging Methods

Alternative Imaging Methods
DV Info Net is the birthplace of all 35mm adapters.


Closed Thread
 
Thread Tools Search this Thread
Old October 1st, 2004, 10:38 AM   #1771
Major Player
 
Join Date: May 2004
Location: Knoxville, TN (USA)
Posts: 358
Quote:
Marto Lautz wrote:
then is this chip better then the altens chip ?
From what I know, the AltaSens check has far better image quality.
Quote:
for waht I have read you guys are working on a camera friendly user interface is taht right
That is correct. Rob Lohman and myself have been working on a two-part system.

The Capture app (ObscuraCap) is like the camera's firmware and is designed to be as user-friendly as possible. It captures the frames and writes them in lossless, raw form to disk. Sort of a "digital negative."

The Convert app (ObscuraConvert) "develops" the raw files into formats that are more suitable for editing. It is currently command-line only, so it isn't quite so user-friendly. But it will be released soon as open-source (GPL) so a UI (and lots of other features) can be added to it.
Rob Scott is offline  
Old October 1st, 2004, 10:40 AM   #1772
Silicon Imaging, Inc.
 
Join Date: May 2004
Location: Troy, NY USA
Posts: 325
Altasens - 1920HD

Marto:
The SI-1920HD is based on the latest Altasens (3560, not the older chips). Jason has all his facts about this exactly correct including the expected ship date with the newest sensors. Software supplied from us tends to be interface specific - either what you get with the gigabit or frame grabber and is very industrial. That is why we have people here working on cinema/broadcast solutions.

If you are not joining in on the development, I would suggest letting the people doing the software have about another month unless they invite beta testing. Right now the work is being done on the SI-1300 (720p), may move to the SI-3300 (1080@24fps) and certainly will end up at the 1920HD.
__________________
Silicon Imaging, Inc.
We see the Light!
http://www.siliconimaging.com
Steve Nordhauser is offline  
Old October 1st, 2004, 07:52 PM   #1773
New Boot
 
Join Date: Mar 2004
Location: philadelphia PA
Posts: 23
Thanks Steve,
Sound like i would have to wait, any way I don't know much about programing but in electronics and optics I can help,
please let me know if I can contrivute on anything.
may be desing and make a skeleton ergonomicaly for the camera because i have tools to cast and weld aluminum my best camera that I have used ( I'm using it at this moment) is aaton.
Altasens chips are working at with sensitivity at the moment with an acceptable noise rate?
I may can have involved a friend that do programing.
waht is the plataform you are building the interface on linux well UI I think is cross plataform unix osx linux if I'm not wrong.
__________________
Martin Lautz
Director of Photography
Filmverlag Productions
www.filmverlag.com
Marto Lautz is offline  
Old October 1st, 2004, 09:32 PM   #1774
Trustee
 
Join Date: Mar 2003
Location: Virginia Beach, VA
Posts: 1,095
The Altasens chip can go up to ISO1600 for sensitivity-that's very sensitive :)
Jason Rodriguez is offline  
Old October 1st, 2004, 11:34 PM   #1775
New Boot
 
Join Date: Mar 2004
Location: philadelphia PA
Posts: 23
ya but at cost of gain that means noise.
is there any test pictures ?
it is going to be sell by SI?
__________________
Martin Lautz
Director of Photography
Filmverlag Productions
www.filmverlag.com
Marto Lautz is offline  
Old October 2nd, 2004, 12:18 AM   #1776
Inner Circle
 
Join Date: May 2003
Location: Australia
Posts: 2,761
<<<-- Originally posted by Jason Rodriguez : The Altasens chip can go up to ISO1600 for sensitivity-that's very sensitive :) -->>>

Yeah, I'm still droolling.

Marto, what you said is right, I would still like to find out what the bottom line is myself. I think Jason mentioned 100db max SN in the other thread, at that level you are putting 12-bits=approx 72db, allowing for 18db gain before it affects the bottom bit on average, that would be extrordinary (-ingly usefull).
Wayne Morellini is offline  
Old October 2nd, 2004, 12:28 AM   #1777
Inner Circle
 
Join Date: May 2003
Location: Australia
Posts: 2,761
Hey, does anybody know of a site that tells you the performance curves of human vision, the books here are not good enough? I am interested in how resolution, range and sensitivity of the luminance and chroma change with brightness.
Wayne Morellini is offline  
Old October 2nd, 2004, 01:04 AM   #1778
Trustee
 
Join Date: Mar 2003
Location: Virginia Beach, VA
Posts: 1,095
I thought the noise levels of the chip when the gains were set to 0 to be very acceptable, and the dyanmic range was terrific.
Jason Rodriguez is offline  
Old October 2nd, 2004, 11:44 AM   #1779
Trustee
 
Join Date: Jan 2003
Location: Wilmington NC
Posts: 1,414
Update:

Looks like I will be shipping the 3300 and Epix frame grabber off to the software developer for final work..we can no longer do all the testing via remote over the internet ..the software writer needs to see the issues with display and capture ...I will keep everyone posted as always ;)
Obin Olson is offline  
Old October 3rd, 2004, 11:51 AM   #1780
Inner Circle
 
Join Date: May 2003
Location: Australia
Posts: 2,761
Community Tech Update:

I have just posted a few things on a lowend camera in the tech thread, it's pretty high minded stuff, and not helped much by the 5+:1 Jpegs, but worth looking at.

http://www.dvinfo.net/conf/showthrea...877#post228871
Wayne Morellini is offline  
Old October 5th, 2004, 03:05 AM   #1781
Inner Circle
 
Join Date: May 2003
Location: Australia
Posts: 2,761
In totally useless information:

Rob.s, can we have a RAW capture for this camera:

http://www.guardian.co.uk/space/arti...318911,00.html

Now if we "dropped" into a few politicians' press conferences with that, it would sure solve a few problems (and make some pretty flat debate) ;)
Wayne Morellini is offline  
Old October 5th, 2004, 09:14 AM   #1782
Major Player
 
Join Date: May 2004
Location: Knoxville, TN (USA)
Posts: 358
Re: In totally useless information:

Quote:
Rob.s, can we have a RAW capture for this camera:
Sure, no problem. But I think the frame rate will be pretty slow, given a frame size of 100K x 100K :-)
Rob Scott is offline  
Old October 5th, 2004, 12:16 PM   #1783
Trustee
 
Join Date: Jan 2003
Location: Wilmington NC
Posts: 1,414
Rob S. how is your capture app doing?

are you getting good preview framerate out of it yet?
Obin Olson is offline  
Old October 5th, 2004, 12:19 PM   #1784
Major Player
 
Join Date: May 2004
Location: Knoxville, TN (USA)
Posts: 358
Quote:
Obin Olson wrote
are you getting good preview framerate out of it yet?
I have been so snowed under I've barely worked on it for about a month. I'm getting around 25 fps on the preview. A little bit of lag, but not bad -- it's hard to tell exactly how much.
Rob Scott is offline  
Old October 5th, 2004, 10:22 PM   #1785
Trustee
 
Join Date: Mar 2003
Location: Virginia Beach, VA
Posts: 1,095
When you mean "not much", is it noticeable? Or is it just a slight amount that is barely noticable? Does the lag reduce if you turn off the color preview and simply go black and white?

BTW, do XCAP or StreamPix have lag in their previews? Just curious.
Jason Rodriguez is offline  
Closed Thread

DV Info Net refers all where-to-buy and where-to-rent questions exclusively to these trusted full line dealers and rental houses...

Professional Video
(800) 833-4801
Portland, OR

B&H Photo Video
(866) 521-7381
New York, NY

Z.G.C.
(973) 335-4460
Mountain Lakes, NJ

Abel Cine Tech
(888) 700-4416
N.Y. NY & L.A. CA

Precision Camera
(800) 677-1023
Austin, TX

DV Info Net also encourages you to support local businesses and buy from an authorized dealer in your neighborhood.
  You are here: DV Info Net > Special Interest Areas > Alternative Imaging Methods

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



Google
 

All times are GMT -6. The time now is 10:43 PM.


DV Info Net -- Real Names, Real People, Real Info!
1998-2017 The Digital Video Information Network