Search found 36 matches

by ScepticMatt
21 Apr 2017, 02:05
Forum: General — Displays, Graphics & More
Topic: OLED 4K 30" 60 Hz - Dell UP3017Q
Replies: 68
Views: 18584

Re: OLED 4K 30" 60 Hz - Dell UP3017Q

No, the double flash would still be visible. The only way to remove it would be with some kind of extrapolation, like various time warp techniques in VR headsets.

With 60fps@85hz you'd get either severe tearing or judder, so that's a no-no.
by ScepticMatt
15 Jun 2014, 20:32
Forum: Area 51: Display Science, Research & Engineering
Topic: Highest perceivable framerate? [good discussion]
Replies: 21
Views: 13200

Re: Highest perceivable framerate? [good discussion]

Maybe I was using the wrong word. Maybe eye-adaptive motion blur would be better. I didn't condone hold-type blur. What I was referring to was motion blur simulating real life. We perceive motion blur if the angular velocity of the gaze direction differs from the angular velocity of a object (Obviou...
by ScepticMatt
12 Jun 2014, 16:51
Forum: Area 51: Display Science, Research & Engineering
Topic: Highest perceivable framerate? [good discussion]
Replies: 21
Views: 13200

Re: Highest perceivable framerate? [good discussion]

In my agreemend with flood, I feel that eye-tracking motion blur is the only real way to solve motion perception beyond using unpractical refresh rates. And while the eye-tracking needs to be fast, it doesn't need to be sub-ms as perception during saccades is limited and contrast sensitivity drops. ...
by ScepticMatt
30 Mar 2014, 06:11
Forum: Area 51: Display Science, Research & Engineering
Topic: Understanding Persistence versus Motion Blur
Replies: 5
Views: 8697

So what persistence should I choose (cont.)

I think a good way to do this is to post research here, and discuss and fix it first (i.e. mini-"peer review") Then after a while, with the info collected, post an blog article later. Edit 4. How low can I set persistence and still achieve the screen brightness I need?. First, what screen brightness...
by ScepticMatt
29 Mar 2014, 16:57
Forum: Area 51: Display Science, Research & Engineering
Topic: Understanding Persistence versus Motion Blur
Replies: 5
Views: 8697

So what persistence should I choose

Very nice. Let me try to add to that, I hope you don't mind. 1. How low of a persistence do I need to maintain image detail? We want to minimize motion blur during eye tracking, as mark explained. To not lose any resolution, we need to reduce blur below 1 pixels. Maximum smooth pursuit for humans is...
by ScepticMatt
17 Mar 2014, 14:15
Forum: High Frame Rate Video (HFR, UltraHFR, 120fps, 240fps, 1000fps)
Topic: Resolution of your eyes [YouTube video]
Replies: 22
Views: 16688

Re: Resolution of your eyes [YouTube video]

Heres an interesting video guys :P https://www.youtube.com/watch?v=4I5Q3UXkGd0 While the human visual system - uses (micro-)saccadic movement to increase apparent resolution, this also increases the apparent resolution of video if the framerate isn't too low. So for games/film we only need to care ...
by ScepticMatt
11 Mar 2014, 10:57
Forum: Area 51: Display Science, Research & Engineering
Topic: Math Formulas for phosphor decay & LCD GtG [provided!]
Replies: 19
Views: 14049

Re: Seeking Math Formulas for phosphor decay & LCD GtG

The curves (strobe compensated) are different for top edge and bottom edge of the screen, due to the asymmetry between the consecutive scanout, versus the all-at-once strobe. The transitions are fresher at bottom edge, than center of the screen. That would be an easy fix, just set the delay to t = ...
by ScepticMatt
08 Mar 2014, 16:43
Forum: Area 51: Display Science, Research & Engineering
Topic: Math Formulas for phosphor decay & LCD GtG [provided!]
Replies: 19
Views: 14049

Re: Seeking Math Formulas for phosphor decay & LCD GtG

Here's a selection of papers. I didn't have time to simulate it yet. P-25: Inter-Grey-Level Response Times of a Liquid Crystal Display (includes overdrive, without the need for LUTs) The inter-grey-level response times of an LCD are studied using two different approaches: a 3-D finite-elements dynam...
by ScepticMatt
08 Mar 2014, 15:31
Forum: Area 51: Display Science, Research & Engineering
Topic: Math Formulas for phosphor decay & LCD GtG [provided!]
Replies: 19
Views: 14049

Re: Seeking Math Formulas for phosphor decay & LCD GtG

I haven't looked into G2G. I wouldn't rule it out to find something yet.
Edit: in one minute, I found this:
Mathematical modeling of the LCD response time
http://hal.archives-ouvertes.fr/docs/00 ... _20087.pdf
by ScepticMatt
07 Mar 2014, 02:46
Forum: Area 51: Display Science, Research & Engineering
Topic: Math Formulas for phosphor decay & LCD GtG [provided!]
Replies: 19
Views: 14049

Re: Seeking Math Formulas for phosphor decay & LCD GtG

Wow, that's just the paper I based my earlier calculations on in the first place. (though a slightly higher quality version) I guess I'd just have to read through the whole thing first :) Edit: Thanks , I finally got it (using the updated constants from newer version) http://abload.de/img/pixel-resp...