A Canvas Made of Pixels • Hacker News Board

Re: A Canvas Made of Pixels

#21

Post by Phemist » Thu, Jan 14, 2016, 12:39 PM UTC

DonHopkins wrote: post #18

Phemist wrote: post #3

>> A fun (but impractical and frustrating) variant of this feature is to have the image change as soon as the viewer looks away. So you’re looking at a painting, glance away to another room, and look back to find a new painting hanging on the wall. Re this comment. There is this thing called "saccadic masking", the gist of which is that we are effectively blind while our eyes move from focusing on one position to the…

This is what happens when I try to read text in a dream.

Basically the inverse being applied? Sentence fully displayed, with the word that's focused on masked...

Re: A Canvas Made of Pixels

#22

Post by tobr » Thu, Jan 14, 2016, 12:44 PM UTC

madaxe_again wrote: post #14

Tinyyy wrote: post #10

Wow this is incredibly cool! I love the shy feature especially, to screw with the viewer :P One question I have, though, is that since the aspect ratio of the screen is fixed, does that mean that all the photos have to be rescaled? That is kinda inelegant, I wonder if there's a way to fix it.

I think the mat around the photo is also rendered, so you can have whatever aspect you want - although a portrait image might look a bit lost in the middle of it. Next step - mount the frame on a motorised bearing so it can rotate 90 degrees depending on the image aspect!

I don't think the mat is rendered. In the video with changing light conditions, you can see how the picture lags slightly, while the mat reacts immediately.

Re: A Canvas Made of Pixels

#23

Post by dexterdog » Thu, Jan 14, 2016, 12:44 PM UTC

I was having a conversation regarding these things just a few days ago. I always loved the idea of a digital frame and have had many over the years, but no devices really nailed it and backlit was always the wrong way to go. Refresh time is not an issue at all as you would refresh on inactivity if you really don't want people to see the sausage made. Feeding data to these things is trivial.

Re: A Canvas Made of Pixels

#24

Post by ohitsdom » Thu, Jan 14, 2016, 12:56 PM UTC

chrismbarr wrote: post #12

I'm really surprised there's no photos of the build process. It's hard to tell if this is actually what is being described, or just a blog post around a photo of a framed image.

Build photos would have been really cool. Also, some detail on the software would be nice. I'm assuming it's running on OSX, but I still have lots of questions (what language, how can you change the picture, how does he manage it remotely, etc).

Re: A Canvas Made of Pixels

#25

Post by ajuc » Thu, Jan 14, 2016, 1:14 PM UTC

Phemist wrote: post #3

>> A fun (but impractical and frustrating) variant of this feature is to have the image change as soon as the viewer looks away. So you’re looking at a painting, glance away to another room, and look back to find a new painting hanging on the wall. Re this comment. There is this thing called "saccadic masking", the gist of which is that we are effectively blind while our eyes move from focusing on one position to the…

This could be very useful for optimizing 3d videogames :) Basicaly rendering only part of screen each frame.

Re: A Canvas Made of Pixels

#26

Post by Phemist » Thu, Jan 14, 2016, 1:16 PM UTC

Phemist wrote: post #3

>> A fun (but impractical and frustrating) variant of this feature is to have the image change as soon as the viewer looks away. So you’re looking at a painting, glance away to another room, and look back to find a new painting hanging on the wall. Re this comment. There is this thing called "saccadic masking", the gist of which is that we are effectively blind while our eyes move from focusing on one position to the…

Found the article I was referencing - McConkie & Rayner (1975) - http://link.springer.com/article/10.3758/BF03203972

Re: A Canvas Made of Pixels

#27

Post by Aandre » Thu, Jan 14, 2016, 1:17 PM UTC

Lionel Messi wins 5th time Ballon d’Or trophy http://goo.gl/D5rX2A

Re: A Canvas Made of Pixels

#28

Post by glaberficken » Thu, Jan 14, 2016, 1:25 PM UTC

m1sta_ wrote: post #17

I use a printer.

you tree killer :P

Re: A Canvas Made of Pixels

#29

Post by coldpie » Thu, Jan 14, 2016, 1:25 PM UTC

Phemist wrote: post #3

>> A fun (but impractical and frustrating) variant of this feature is to have the image change as soon as the viewer looks away. So you’re looking at a painting, glance away to another room, and look back to find a new painting hanging on the wall. Re this comment. There is this thing called "saccadic masking", the gist of which is that we are effectively blind while our eyes move from focusing on one position to the…

I apologize for the stupid response to your intelligent and well-written comment, but this reminded me of the classic "Creepy Watson" video, playing around with a poorly implemented follower AI in a budget video game. Audio not required, but recommended. https://www.youtube.com/watch?v=13YlEPwOfmk

Re: A Canvas Made of Pixels

#30

Post by cabirum » Thu, Jan 14, 2016, 1:38 PM UTC

A color hi-res e-ink display would be a much better fit for the project: it requires power only to change the image and doesn't need light sensors. Too bad e-ink isn't being developed anymore.