Some more little info about JPEG2000:

"Motion JPEG2000 has a wide range of compute requirements depending on the end application. A video surveillance application for a 640 x 480 30 frames/s video stream requires approximately 4,200 MOPS; medical imaging 1,024 x 1,024 at 60 frames/s lossless coding can require 29,000 MOPS; and digital cinema with a frame size of 4,096 x 2,048 at 24 frames/s requires 93,000 MOPS all using JPEG2000."

http://neasia.nikkeibp.com/wcs/frm/n...st_274496.html

Lookin for more info I 've discovered some other codecs called EZW, SPIHT, and some others I don't remember.They seem to be very fast on a PC. 256x256 image in 0.02 seconds on ! 1GHZ CPU
EZW is supposed to be a part of JPEG2000 standard.

Some implementation:

http://pesona.mmu.edu.my/~msng/EZW.html

Original Matlab:

http://perso.wanadoo.fr/polyvalens/clemens/ezw/ezw.html

Wavelet image constructor Kit

http://www.geoffdavis.net/dartmouth/...t/wavelet.html

Thanks Juan. Can you or someone else bring me up to speed on
matlab? I assume it is a program (or mulitple?) to do something
with math and algorithms? Where can I find it (if there are more
which is the best) and how does such a thing work? It might
greatly help me with some things I'm trying to figure out / test.

Thanks!

Juan,
Jpeg2000 looks good. Do they support 12 bit color depth in there?
'Regular' Jpeg does , I use it all the time.
High bit depth is mandatory for this project.


Rob: Matlab is an app for manipulating matrix structures. A lot of scientists and engineers use it. I forget who makes it, but it's easy to search for.

-Les

high-res microdisplay for viewfinder app.:

http://www.crlopto.com/products/

another use for display?
 

i'm not expert on this, but... maybe someone will know.

if this is the lcd display (see the link Obin mentioned above: http://www.crlopto.com/products/)

- does it means that some of the models are not fully transparent (i mean - just the "screen" part)?

if yes - is it possible to use it instead of GG?
if the resolution is 1024x768 this means that this is 1:1 corelated to CCD, so maybe we can use this (just screen part, not the whole electronics etc.) as GG?

yes?

or i'm completelly wrong?

filip

wrong - it's a LCD for a viewfinder not a GG !

Yes guys, again, Jpeg2000 supports 16 bit and down, LOSSLESS and LOSSY, any combination possible in the same stream.Metadata is included.So you could store info about color balance etc, focus and anything else.

BTW, any news about how to eliminate the rolling shutter artifact.
Any development of a Mechanical shutter?

lcd
 

<<<-- Originally posted by Obin Olson : wrong - it's a LCD for a viewfinder not a GG ! -->>>

obin,

sorry if i'm boring :)

i understand that this is lcd for viewfinder, but let's "pretend" that you have JUST that rectangle (which is used as a screen for the whole lcd viewfinder "module"), nothing else, no electronics etc.

- let's "pretend" now to use just this part of lcd "module" as GG.

- if this "screen" is not transparent - mean - if it's frosted, and as we know - this is lcd screen which can "project" HD resolution picture on itself - means that smallest pixel is just in 1:1 ratio to our CCD pixel - right?

what i mean is following - will we SEE any "grain" if we use that very lcd screen only as GG?

does this make ANY sense or i'm again lost?


filip

lost.

the lcd is not a gg and is not "frosted" at all but is the same thing your computer has - TFT LCD..it's just TINY

to obin
 

ok.

Juan: last I heard Steve and his team are going to look at it this
week. So I'm keeping my fingers crossed. I'm pretty busy myself
as well since I'm going to TechED here in Amsterdam. Yay.

Source: http://techreport.com/etc/2004q2/sis...p/index.x?pg=2

Hallo There.
I'm new to this list, but have been reading with great interest. Hope I can help out with something...

<<<-- Originally posted by Obin Olson : high-res microdisplay for viewfinder app.:

http://www.crlopto.com/products/ -->>>

There are a few downsides to that panel:

- It's a monochrome imager. Colors are created by filtering the light reflected by the device. Either by a high speed color-wheel or by using three different LED illuminators taking turns. From what I've seen this filtering process can lead to annoying color flicker.

- The contrast ratio is only 200:1 and the blacklevel is rather high, making the blacks milky.


If we could find a highres OLED panel like Kinetta uses for their Viewfinder, things would be better, as the contrast ratio of most OLED screens are 5000:1, and the blacklevel is reffered to as 10 times better than transmittive LCD.

that would be good but as I see Jeff on the message boards for microdisplay looking for answers for the Kinetta I am not sure even he has the final viewfinder nailed down ;)

also don't be so fast to judge as this company is using them and winning awards:

http://www.accuscene.com/

<<<-- Originally posted by Obin Olson : that would be good but as I see Jeff on the message boards for microdisplay looking for answers for the Kinetta I am not sure even he has the final viewfinder nailed down ;) -->>>

I see :)

<<<-- Originally posted by Obin Olson :also don't be so fast to judge as this company is using them and winning awards:

http://www.accuscene.com -->>>

Ok, you got me. If it's good enough for Panavision it might do for your project as well, won't it :)


Only 800x600 and 100:1 but very handy:
http://www.emagin.com/svga+.htm