Date   

Re: DIY Printed Holographic Display (Lenticular Optics Explained)

JackDesBwa|3D
 

Sure using lenticular lenses over screens is done for years, but building your own one to match exactly your screen is a nice performance.
Also, since he controls the thickness of its lenticular material, he can adjust it to the thickness of the glass so that it is possibly not a problem [in addition the refraction indices are probably quite close]

JackDesBwa


Re: Sorting the images of the latest Mars Rover #extraterrestrial

JackDesBwa|3D
 

How can the JSON metadata be read from the NASA site directly?

If you check network traffic generated by the site you linked, it calls https://mars.nasa.gov/rss/api/?feed=raw_images&feedtype=json&category=mars2020 like is done in mars-stereo. No key is needed (but there might be a rate limitation per IP internally).
Or reverse-engineer https://mars.nasa.gov/mars2020/multimedia/raw-images/ for more arguments.

JackDesBwa


Sorting the images of the latest Mars Rover #extraterrestrial

Antonio F.G.
 

I am trying to sort the Mars Perseverance images in order to make it easier to group them into panoramas, and find a way to match these L and R panoramas into stereo pairs.

I have uploaded to Google Spreadsheets a list of some Mastcam-Z images that can be ordered and filtered in many ways:
https://docs.google.com/spreadsheets/d/151gMSeNs4SxV2FGV8P09mG9xJylyGnWMkATgVzxriQQ/edit?usp=sharing

A good way to order the images is by "Drive", "Azimuth" (in this order of priority). It places close to each other those images that point to the same place approximately, and of course, are taken from the same place (apparently the "Drive" key changes with the position of the rover ).
Then you can filter to show only the ones that share the same HFV (note the L & R lenses have slightly different HFV's). And finally you can filter out those pointing too low (filter with Altitude > -20°), because these images show just the rover itself. Hopefully you should get a list of images with several L and R keys, and also several altitudes that show the possibility to build panoramas stacking the images in vertical and horizontal.

But I have problems to extend this more. For one thing I could not find the way to access the the JSON data from the NASA site. I built the spreadsheet from metadata provided in this site: https://rkinnett.github.io/roverpics/?mars2020

How can the JSON metadata be read from the NASA site directly?

I signed in the NASA site, and got an "API-Key", but could not get anything useful. They provide an example that is totally useless: https://api.nasa.gov/planetary/apod?api_key=9A49xbxgN67rnhfVeXf2rsXyWTWkpCtPFPAr2bjW

Regards
    Antonio


Re: DIY Printed Holographic Display (Lenticular Optics Explained)

Depthcam
 

Well, it's really a lenticular display - not "holographic".  And he's several years late in "coming up" with this idea.

Mounting lenticular sheets on phones has been done by several manufacturers over the years. And the latest iteration of this is the one by MOPIC - that now also offer a glasses-free 3D display.

But the problem with "over the glass" solutions is that the lenticular sheet is not directly touching the LCD surface.  For best results, the lenticular sheet must be under the glass such as on 3D phones and tablets.

Francois


DIY Printed Holographic Display (Lenticular Optics Explained)

Philip Heggie
 

Interesting video of DIY Printed Holographic Display (Lenticular Optics Explained)

 

https://www.youtube.com/watch?v=ktgbtoCD58I

 

 

Sent from Mail for Windows 10

 


Re: Special Event: Guided History Tour of 3D viewers with Bill Buxton - Wed Mar 24th

Depthcam
 

Those reels are in really poor condition !

Francois


Re: Special Event: Guided History Tour of 3D viewers with Bill Buxton - Wed Mar 24th

Bill Costa as just a member
 

Well I'll have to stay up past my bed time here on the right coast, but it sounds like it will be worth it.  Thanks for sharing this.

...BC

On Tue, Mar 16, 2021 at 1:03 PM Herb Weiner <herbw@...> wrote:
Highly recommended. Bill Buxton is a great speaker. I have heard him multiple times.

Event s free. Time is 6:30 PM Pacific Time.

Herb

Begin forwarded message:

From: CHIFOO Communications <communications@...>
Subject: Special Event: Guided History Tour of 3D viewers with Bill Buxton - Wed Mar 24th
Date: March 16, 2021 at 9:14:33 AM PDT
To: <herbw@...>
Reply-To: CHIFOO Communications <communications@...>

View this email in your browser

Special Event

From Virtual Reality To Postcards & Back – A Guided Tour

Bill Buxton
Microsoft Research

A CHIFOO Special Event with Bill Buxton

Somehow, during my CHIFOO talk last year, I mentioned how important Portland was to the evolution of AR/VR technology and adoption. This seemed to give rise to a certain degree of curiosity. Hence I promised to come back and explain. So this talk is my fulfillment of that promise.

So what I am going to do is take you on a guided tour of the history of (largely) 3D viewers and the ability to experience remote places without being there. The stepping stones of my narrative will items selected out of the Buxton – Microsoft collection, spanning the period between 1838 and now. And, yes, Portland will provide an important stepping stone along the path followed. As interesting as this tour may be intrinsically, it has to have a secondary theme which extends beyond the specific tale and its protagonists. In this case, that uber-tale has to do with the nature of design, technical evolution, the cultural nature of what we do, and perhaps even the difference between technology evolution (a scientific notion) vs progress (an ethical one).

And hopefully – to the extent possible being remote, we can make this as much a conversation as a presentation.


About the Speaker

Bill Buxton, Microsoft Research
Bill has an over 40-year involvement in research, practice and commentary around design, innovation and human aspects of technology. Following a 20-year career as a professional musician, he morphed into a researcher and interaction designer, at the University of Toronto, Xerox PARC, Alias Research and SGI Inc. He has been awarded four honourary doctorates, is co-recipient of an Academy Award for Scientific and Technical Achievement, received an ACM/SIGCHI Lifetime Achievement Award, and is a Fellow of the ACM. Bill has published, lectured and consulted widely, and is an Adjunct Professor at the University of Toronto, and a Distinguished Professor of Industrial Design at the Technical University Eindhoven. Other than his family, mountains and rivers are his first love.

 
 

Wednesday, March 24, 2021


Talk begins at 6:30pm
 
RSVP at Meetup

Become a CHIFOO Member


CHIFOO Member Benefits

CHIFOO membership allows you to attend our programs for free, access videos from past events, get discounts on workshops and conferences, attend our annual CHIFOO social, and access CHIFOO jobs list. 

Become a Volunteer

Get Involved Today!

Are you a creative and passionate individual that is all about user experience? Do you want to make your mark on the profession? Participating in CHIFOO advances your career. 

View Past Meetings

Missed out on a meeting?

Look for newly uploaded meetings for CHIFOO. Don't miss out on past CHIFOO events- sign in and watch today. 

View Current Jobs

See the CHIFOO Jobs Board

Searching for the latest opportunities in the fields of HCI, Web, Design, etc.? Well, we have you covered thanks to our Member at Large, David Stubbs. Each job is verified and the list is updated often. Sign in and check out jobs today!

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--
Bill.Costa@...
+1.603.435.8526
https://mypages.unh.edu/wfc
No good deed goes unpunished.


Re: Have a Bolex 3D set up for sale?

Depthcam
 

I have the full kit Bolex H16 camera with complete stereo lens kit and projector lens - all in mint condition.

Yes, it's available to purchase but this is not sell 3D !

Francois


Special Event: Guided History Tour of 3D viewers with Bill Buxton - Wed Mar 24th

Herb Weiner
 

Highly recommended. Bill Buxton is a great speaker. I have heard him multiple times.

Event s free. Time is 6:30 PM Pacific Time.

Herb

Begin forwarded message:

From: CHIFOO Communications <communications@...>
Subject: Special Event: Guided History Tour of 3D viewers with Bill Buxton - Wed Mar 24th
Date: March 16, 2021 at 9:14:33 AM PDT
To: <herbw@...>
Reply-To: CHIFOO Communications <communications@...>

View this email in your browser

Special Event

From Virtual Reality To Postcards & Back – A Guided Tour

Bill Buxton
Microsoft Research

A CHIFOO Special Event with Bill Buxton

Somehow, during my CHIFOO talk last year, I mentioned how important Portland was to the evolution of AR/VR technology and adoption. This seemed to give rise to a certain degree of curiosity. Hence I promised to come back and explain. So this talk is my fulfillment of that promise.

So what I am going to do is take you on a guided tour of the history of (largely) 3D viewers and the ability to experience remote places without being there. The stepping stones of my narrative will items selected out of the Buxton – Microsoft collection, spanning the period between 1838 and now. And, yes, Portland will provide an important stepping stone along the path followed. As interesting as this tour may be intrinsically, it has to have a secondary theme which extends beyond the specific tale and its protagonists. In this case, that uber-tale has to do with the nature of design, technical evolution, the cultural nature of what we do, and perhaps even the difference between technology evolution (a scientific notion) vs progress (an ethical one).

And hopefully – to the extent possible being remote, we can make this as much a conversation as a presentation.


About the Speaker

Bill Buxton, Microsoft Research
Bill has an over 40-year involvement in research, practice and commentary around design, innovation and human aspects of technology. Following a 20-year career as a professional musician, he morphed into a researcher and interaction designer, at the University of Toronto, Xerox PARC, Alias Research and SGI Inc. He has been awarded four honourary doctorates, is co-recipient of an Academy Award for Scientific and Technical Achievement, received an ACM/SIGCHI Lifetime Achievement Award, and is a Fellow of the ACM. Bill has published, lectured and consulted widely, and is an Adjunct Professor at the University of Toronto, and a Distinguished Professor of Industrial Design at the Technical University Eindhoven. Other than his family, mountains and rivers are his first love.

 
 

Wednesday, March 24, 2021


Talk begins at 6:30pm
 
RSVP at Meetup

Become a CHIFOO Member


CHIFOO Member Benefits

CHIFOO membership allows you to attend our programs for free, access videos from past events, get discounts on workshops and conferences, attend our annual CHIFOO social, and access CHIFOO jobs list. 

Become a Volunteer

Get Involved Today!

Are you a creative and passionate individual that is all about user experience? Do you want to make your mark on the profession? Participating in CHIFOO advances your career. 

View Past Meetings

Missed out on a meeting?

Look for newly uploaded meetings for CHIFOO. Don't miss out on past CHIFOO events- sign in and watch today. 

View Current Jobs

See the CHIFOO Jobs Board

Searching for the latest opportunities in the fields of HCI, Web, Design, etc.? Well, we have you covered thanks to our Member at Large, David Stubbs. Each job is verified and the list is updated often. Sign in and check out jobs today!

See more at CHIFOO.org
Twitter
Facebook
Website
Email
LinkedIn
Copyright © 2021 CHIFOO, All rights reserved. 
Thank you for signing up to recieve email announcements from CHIFOO. 

Our mailing address is: 
CHIFOO
PO Box 219294
Portland, OR  97225-9294

Add us to your address book


Want to change how you receive these emails?
You can update your preferences or unsubscribe from this list. 

Email Marketing Powered by Mailchimp


Re: Workshops at 2021 NSA 3D-Con

Rick
 

Gordon,

Right now there are no submission forms available, so initial contact by email is preferred.

Rick

On Monday, March 15, 2021, 10:59:30 PM EDT, Gordon Au <gordonburi@...> wrote:


Rick, how should folks get in touch with you regarding this?


Re: Have a Bolex 3D set up for sale?

Oktay
 

I've got a Bolex H16 with KERN 16-100mm zoom lens but no 3D lens or accessories.
However receiving it to US from overseas at these times could be problematic.

Oktay


Re: Workshops at 2021 NSA 3D-Con

Gordon Au
 

Rick, how should folks get in touch with you regarding this?


Re: Have a Bolex 3D set up for sale?

forum@trivision3d.com
 

Le 15/03/2021 à 23:29, Paul Gillis a écrit :
Just curious, does the system you're talking about record something like a pair of 3:2 aspect ratio vertical images side by side on a standard 16mm frame?  Or is it something more complicated?

--Paul Gillis
_._,_._,_

JMH/trivision3d (France) Bolex cam + Kern 3D lens = sbs half vertical L/R (stereo split frame, see draw bellow)

I have one 16mm Paillard Bolex cam (from my father making 2D movie) + 3D lenses Kern Paillard (I bought in Switzerland when starting 3D in 1981)... and I just found in Germany some month ago (many years later) the 3D rare lens for projection. Before I built myself several projection lenses, then I bought a 35mm projection miror system (bellow too)... but all not so good as the original projection lens for Kern Paillard Bolex 16 mm film.

Myself, I'm searching for  Pictures or to buy a Hammel Tri-Vision (made in USA) but the first and rare brown model having 3 lenses (become two lenses later...I have this one black)


Paillard Bolex cam + 3D lens Kern Paillard (top on the left)

  Down adjustable mirors to put in front of projector lens for 35mm 3D movies

It was possible to built a 3D projector lens with another 3D Kern two small lenses mount on a tube + polarized filter inside, but the image size was small and no zoom.

I also try twin primastic lens with PVC water pipe (use now on my Lumix)

Also water 3D prism to be use like 3D projector lens.

Another 3D lenses (more complicated) for camera and projector (also 16mm, 35m, 70 mm ) was the Z.Y.X. BINO (sorry texte in French, made in France)



Re: Have a Bolex 3D set up for sale?

Zane Healy
 

Since you’re in Salem, you might check with Pacific Rim Camera and see if they have any idea.  I’ve never done business with them, but frequently run across them on eBay searches.  They carry an amazing range of stuff.

I like Blue Moon up in St. John’s (NW Portland), but they don’t really seem to get much Bolex or 3D gear.

Zane




On Mar 15, 2021, at 9:31 AM, Jack <mraroid@...> wrote:
Hi folks....

When I moved out of the US, I sold my 16mm bolex and 3D set up for it.  Well, I am back in the US again and still love shooting film.  

Do any of you have a Bolex & the 3D set up for it in your back closet collecting dust?  Almost everyone has moved to digital.  I am still stuck in the past I guess.

I am looking to buy one.  Let me know.  

Thanks,

jack
Salem Oregon



Re: Have a Bolex 3D set up for sale?

Paul Gillis
 

Just curious, does the system you're talking about record something like a pair of 3:2 aspect ratio vertical images side by side on a standard 16mm frame?  Or is it something more complicated?

--Paul Gillis


ISO spare parts for a Stereo Graphic viewer

Paul Gillis
 

I just bought a Stereo Graphic viewer (for Realist-format slides) at a bargain price.  It's in nice shape, but missing a crucial piece: the focusing shaft.  Does anyone have any parts for this viewer, or any clue where to find some?

It might be possible to make a shaft that fits, but it needs gears near each end & I have no clue how I would make those.

--Paul Gillis


Have a Bolex 3D set up for sale?

Jack
 

Hi folks....

When I moved out of the US, I sold my 16mm bolex and 3D set up for it.  Well, I am back in the US again and still love shooting film. 

Do any of you have a Bolex & the 3D set up for it in your back closet collecting dust?  Almost everyone has moved to digital.  I am still stuck in the past I guess.

I am looking to buy one.  Let me know. 

Thanks,

jack
Salem Oregon


Re: Stereopix viewer on your website - beta testing

JackDesBwa|3D
 

Are there any particular server requirements to send the CORS header? Does Apache send this?

There are tons of ways to send CORS headers (but you better not mix them, because they should be only once in the answer).
Apache can add them for example with a .htaccess directive. There is a paragraph in https://stereopix.net/photolab/help/embed_advanced#cors that gives an example of it.

JackDesBwa


Re: Stereopix viewer on your website - beta testing

Herb Weiner
 

Thanks, Jack.

Are there any particular server requirements to send the CORS header? Does Apache send this?

Herb

On Mar 14, 2021, at 3:27 PM, Stereopix Net <contact@...> wrote:

Not much time to answer, but I can give hints to help you.
Excuse my brevity.

No matter what I try, the Display window shows "Error while loading page" although the Controller window shows Connected clients: 1. Note that I am able to access all of the image from a browser; for example: http://www.3dpdx.org/rooms/00-CSC_Logo.jpg .

The number of connected clients and image loading are unrelated.
You have two problems here:
1) Your site is not in HTTPS. Because of a chain of implications too long to explain here, it must be the case (and not with a self-signed certificate, otherwise it would be complex for the user).
2) The server does not send the CORS headers awaited by the browser
The two conditions should be met for the player to work with custom images.

Also, once the controller leaves the room, is there any way for the controller to get back into the same room? I get an error message indicating that the room is in use.

If the connection of the presenter is cut nicely, which is supposed to be the case when you close the page, the room is closed.
If the browser did not close the connection nicely for whatever reason, or if the browser maintains the connection without answering to pings, a watchdog is supposed to close the room after a delay of one minute or so (probably a bit less, I do not remember).

JackDesBwa
 _




Re: Stereopix viewer on your website - beta testing

JackDesBwa|3D
 

Not much time to answer, but I can give hints to help you.
Excuse my brevity.

No matter what I try, the Display window shows "Error while loading page" although the Controller window shows Connected clients: 1. Note that I am able to access all of the image from a browser; for example: http://www.3dpdx.org/rooms/00-CSC_Logo.jpg .

The number of connected clients and image loading are unrelated.
You have two problems here:
1) Your site is not in HTTPS. Because of a chain of implications too long to explain here, it must be the case (and not with a self-signed certificate, otherwise it would be complex for the user).
2) The server does not send the CORS headers awaited by the browser
The two conditions should be met for the player to work with custom images.

Also, once the controller leaves the room, is there any way for the controller to get back into the same room? I get an error message indicating that the room is in use.

If the connection of the presenter is cut nicely, which is supposed to be the case when you close the page, the room is closed.
If the browser did not close the connection nicely for whatever reason, or if the browser maintains the connection without answering to pings, a watchdog is supposed to close the room after a delay of one minute or so (probably a bit less, I do not remember).

JackDesBwa
 _

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