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Blur Busters
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Reged: 03/13/13
Posts: 30
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Many OLED's have Motion Blur due to Sample-And-Hold
03/13/13 06:46 PM


> It actually might even use less power than strobing a backlight.

LightBoost monitors only use about 20 watts, far less power than a CRT (electron gun is less efficient)
Yes, we should encourage all technologies including OLED.


>> Ever hear of OLED? The very definition says they emit light. Not everything is an LCD
> nowadays... My idea (however power hungry) hasn't been done, but certainly CAN be
> done (regardless of where the light is coming from).

OLED is great but unfortunately, sample-and-hold OLED has motion blur. It is scientifically known(click the Microsoft Research paper) that even instant pixel response (0ms) can have lots of motion blur due to the sample-and-hold problem - which is what you get if you don't find a way to shorten the amount of time a frame is actually VISIBLE for (either via higher Hz or via black periods between refreshes).

Sample-and-hold means the frame is continuously shining for the whole refresh. Your eyes are continuously moving while tracking moving objects. Your eyes are in a different position at the beginning of a refresh than the at the end of a refresh; this causes the frame to be blurred across your retinas. All the research papers (Microsoft, Sharp, Nokia, Universities) have confirmed the motion blurring issue caused by eye tracking on sample-and-hold displays.


(From Microsoft Research)

The PS Vita has motion blur during fast scrolling because it does not strobe the OLED pixels.

Only impulse-driven OLED's have zero motion blur.
Strobing needs extra brightness to compensate for the dark periods, they are still working on OLED brightness. Thankfully, some strobe OLED's was shown at CES in Las Vegas; they looked amazing!
But they cost many thousands of dollars...

For some scientific study to help people understand why impulse driving is better for motion blur (sample-and-hold also explains why CRT 60fps@60Hz still has much clearer motion than regular LCD 120fps@120Hz).

Quote:


Temporal Rate Conversion” (Microsoft Research)
Information about frame rate conversion, that also explains how eye tracking produces perceived motion blur on a sample-and-hold display, including explanatory diagrams.

Correlation between perceived motion blur and MPRT measurement
by J. Someya (SID’05 Digest, pp. 1018–1021, 2005.)
Covers the relationship between human perceived motion blur versus Motion Picture Response Time (MPRT) of the display. This also accounts for motion blur caused by eye tracking on a sample-and-hold display, a separate factor than pixel persistence.

What is needed in LCD panels to achieve CRT-like motion portrayal?
by A. A. S. Sluyterman (Journal of the SID 14/8, pp. 681-686, 2006.)
This is an older 2006 paper that explains how scanning backlight can help bypass much of an LCD panel’s pixel persistence.

Frame Rate conversion in the HD Era
by Oliver Erdler (Stuttgart Technology Center, EuTEC, Sony Germany, 2008)
Page 4 has very useful motion blur diagrams, comparing sample-and-hold versus impulse-driven displays.

Perceptually-motivated Real-time Temporal Upsampling of 3D Content for High-refresh-rate Displays
by Piotr Didyk, Elmar Eisemann, Tobias Ritschel, Karol Myszkowski, Hans-Peter Seidel
(EUROGRAPHICS 2010 by guest editors T. Akenine-Möller and M. Zwicker)
Section “3. Perception of Displays” (and Figure 1) explains how LCD pixel response blur can be separate from hold-type (eye-tracking) motion blur.

Display-induced motion artifacts
by Johan Bergquist (Display and Optics Research, Nokia-Japan, 2007)
Many excellent graphics and diagrams of motion blur, including impulse-driven and sample-and-hold examples.




And hundreds of other research papers (and mainstream too; Google "eye tracking motion blur"), some that focus on the impulse-driving (strobing), and others that focus on interpolation, or a combination of both. The common theme is that these agree on overcoming motion blur caused by eye-tracking on sample-and-hold displays. Many OLED's such as PS Vita has the same limitation, but doesn't have to have that limitation. OLED can do it, but not all of them do.

See article: Why Do Some OLED's Have Motion Blur?







Entire thread
Subject Posted by Posted on
* Eliminate LCD motion blur -- CRT quality on 120 Hz LCD -- with MAME software black frame insertion Blur Busters 03/13/13 01:01 AM
. * Re: Eliminate LCD motion blur -- CRT quality on 120 Hz LCD -- with MAME software black frame insertion Elaphe  07/03/14 12:53 PM
. * Re: Eliminate LCD motion blur -- CRT quality on 120 Hz LCD -- with MAME software black frame insertion Sune  07/03/14 10:42 PM
. * Re: Eliminate LCD motion blur -- CRT quality on 120 Hz LCD -- with MAME software black frame insertion Elaphe  07/09/14 10:17 AM
. * Re: Eliminate LCD motion blur -- CRT quality on 120 Hz LCD -- with MAME software black frame insertion R. Belmont  07/09/14 04:50 PM
. * Re: Eliminate LCD motion blur -- CRT quality on 120 Hz LCD -- with MAME software black frame insertion MooglyGuy  07/03/14 10:41 PM
. * Web-based animation of black frame insertion Blur Busters  07/14/13 09:31 PM
. * Re: Eliminate LCD motion blur -- CRT quality on 120 Hz LCD -- with MAME software black frame insertion kriechbaum  06/16/13 01:45 PM
. * Re: Eliminate LCD motion blur -- CRT quality on 120 Hz LCD -- with MAME software black frame insertion harlok  06/16/13 08:18 PM
. * Re: Eliminate LCD motion blur -- CRT quality on 120 Hz LCD -- with MAME software black frame insertion kriechbaum  06/17/13 04:17 PM
. * Re: Eliminate LCD motion blur -- CRT quality on 120 Hz LCD -- with MAME software black frame insertion Blur Busters  07/10/13 05:26 PM
. * Re: Eliminate LCD motion blur -- CRT quality on 120 Hz LCD -- with MAME software black frame insertion Blur Busters  03/19/13 08:11 PM
. * Re: Eliminate LCD motion blur -- CRT quality on 120 Hz LCD -- with MAME software black frame insertion VirtuaIceMan  03/14/13 10:29 AM
. * Re: Eliminate LCD motion blur -- CRT quality on 120 Hz LCD -- with MAME software black frame insertion Blur Busters  03/14/13 04:21 PM
. * LESS INPUT LAG! Also Makes 240p@120Hz look better than 480p@60Hz on 31.5Khz CRT Blur Busters  03/14/13 06:48 AM
. * Re: LESS INPUT LAG! Also Makes 240p@120Hz look better than 480p@60Hz on 31.5Khz CRT jdubs  07/11/13 05:50 PM
. * Re: LESS INPUT LAG! Also Makes 240p@120Hz look better than 480p@60Hz on 31.5Khz CRT Blur Busters  07/14/13 09:30 PM
. * Re: Eliminate LCD motion blur -- CRT quality on 120 Hz LCD -- with MAME software black frame insertion joey35car  03/13/13 03:13 AM
. * Re: Eliminate LCD motion blur -- CRT quality on 120 Hz LCD -- with MAME software black frame insertion Blur Busters  03/13/13 04:33 AM
. * Re: Eliminate LCD motion blur -- CRT quality on 120 Hz LCD -- with MAME software black frame insertion kevinlayne  03/13/13 03:04 AM
. * Re: Eliminate LCD motion blur -- CRT quality on 120 Hz LCD -- with MAME software black frame insertion HowardC  03/13/13 04:59 AM
. * Re: Eliminate LCD motion blur -- CRT quality on 120 Hz LCD -- with MAME software black frame insertion URherenow  03/13/13 09:42 AM
. * Re: Eliminate LCD motion blur -- CRT quality on 120 Hz LCD -- with MAME software black frame insertion sandheaver  03/14/13 12:29 PM
. * Re: Eliminate LCD motion blur -- CRT quality on 120 Hz LCD -- with MAME software black frame insertion Anonymous  03/13/13 02:09 PM
. * Re: Eliminate LCD motion blur -- CRT quality on 120 Hz LCD -- with MAME software black frame insertion R. Belmont  03/13/13 03:43 PM
. * Re: Eliminate LCD motion blur -- CRT quality on 120 Hz LCD -- with MAME software black frame insertion Anonymous  04/05/13 06:38 AM
. * Re: Eliminate LCD motion blur -- CRT quality on 120 Hz LCD -- with MAME software black frame insertion Blur Busters  04/13/13 08:18 PM
. * Re: Eliminate LCD motion blur -- CRT quality on 120 Hz LCD -- with MAME software black frame insertion R. Belmont  04/05/13 03:38 PM
. * Re: Eliminate LCD motion blur -- CRT quality on 120 Hz LCD -- with MAME software black frame insertion Calamity  04/13/13 10:40 PM
. * What? URherenow  03/13/13 03:36 PM
. * HIGH SPEED VIDEO proof (Super Slow Mo) Blur Busters  03/13/13 05:07 PM
. * Re: HIGH SPEED VIDEO proof (Super Slow Mo) URherenow  03/13/13 06:10 PM
. * Many OLED's have Motion Blur due to Sample-And-Hold Blur Busters  03/13/13 06:46 PM
. * What plugin are you using to show those videos? Dullaron  03/13/13 06:02 PM
. * Direct YouTube Links to High Speed Videos Blur Busters  03/13/13 07:04 PM
. * Re: Eliminate LCD motion blur -- CRT quality on 120 Hz LCD -- with MAME software black frame insertion Blur Busters  03/13/13 05:52 AM
. * Re: Eliminate LCD motion blur -- CRT quality on 120 Hz LCD -- with MAME software black frame insertion HowardC  03/13/13 06:23 AM
. * Re: Eliminate LCD motion blur -- CRT quality on 120 Hz LCD -- with MAME software black frame insertion R. Belmont  03/13/13 04:33 PM
. * Re: Eliminate LCD motion blur -- CRT quality on 120 Hz LCD -- with MAME software black frame insertion Blur Busters  03/13/13 06:28 AM
. * Re: Eliminate LCD motion blur -- CRT quality on 120 Hz LCD -- with MAME software black frame insertion Blur Busters  03/13/13 04:31 AM
. * Re: Eliminate LCD motion blur -- CRT quality on 120 Hz LCD -- with MAME software black frame insertion kevinlayne  03/14/13 12:33 PM
. * Re: Eliminate LCD motion blur -- CRT quality on 120 Hz LCD -- with MAME software black frame insertion Blur Busters  03/16/13 08:38 PM
. * Re: Eliminate LCD motion blur -- CRT quality on 120 Hz LCD -- with MAME software black frame insertion fortuna_chan  03/13/13 01:58 AM
. * Re: Eliminate LCD motion blur -- CRT quality on 120 Hz LCD Blur Busters  03/13/13 02:01 AM
. * Re: Eliminate LCD motion blur -- CRT quality on 120 Hz LCD -- with MAME software black frame insertion goredaimon  03/13/13 01:38 AM
. * Re: Eliminate LCD motion blur -- CRT quality on 120 Hz LCD Blur Busters  03/13/13 01:39 AM
. * Re: Eliminate LCD motion blur -- CRT quality on 120 Hz LCD Derrick Renaud  03/13/13 11:23 PM
. * Re: Eliminate LCD motion blur -- CRT quality on 120 Hz LCD Blur Busters  03/13/13 11:50 PM

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