This exact idea has been floating around in my head for ages, and I always wondered how well it actually worked - now I don't need to wonder. I started thinking about it as a potential solution to OLED burn-in. Thankfully, my OLED TV doesn't have any burn-in yet, so I never needed to investigate further.
OLED TVs already compensate for burn in. A lot of your pixels are probably already somewhat "burnt" but you can't perceive it due to the corrective measures your TV takes. You'll only really notice it when it's irredeemably bad.
I don't see how the TV can compensate for the burnin without having an external picture of the screen.
I have a couple of years old OLED TV, and it has burn in... The Netflix logo, the netflix animation, and subtitles are quite visible all the time now. This is despite running periodically the TV pixel refresh or however it is called...
> I don't see how the TV can compensate for the burnin without having an external picture of the screen.
Build a comprehensive degradation profile of your LEDs. Keep the burn-in accumulation buffer that tracks intensity and usage amount of each subpixel. Use it in your EOTF to correct the picture.
Some color-accurate monitors like Eizo are even profiled for temperature (and have a grid of temperature sensors)
Burn-in is probably somewhat computable as a function of brightness, time, and temperature or so. So it can be compensated physically (burn out the other pixels... you don't want to be in the room, it's going to be annoyingly bright) or digitally by adjusting the signal.
It has a memory of the history of what’s displayed on screen and uses that to predict what’s burned in. This can obviously be a privacy issue, so there’s a trade off in making it too exact.
not the greatest picture (some reflections). should have used a gray background, but I used red because this color is the most affected.
The burnin is mostly harmless, but the middle blob is very annoying; yellow parts of the image become greenish when they get to the middle of the screen.
Ah that sucks. How old is the tv? And what’s the brightness in it?
My 3 year old Panasonic gets used a lot but we keep the brightness down to the 45–55% range (it’s plenty bright) to avoid burn in. We also don’t display static content on it. And when we do, it’s mostly from Kodi which dims itself after 10 min or so.
All that to say for those who are fearful of OLED because of burn in: don’t be. With some precautions, it’s fine. And having true blacks is absolutely glorious. I enjoy it every time I use the screen.
This exact idea has been floating around in my head for ages, and I always wondered how well it actually worked - now I don't need to wonder. I started thinking about it as a potential solution to OLED burn-in. Thankfully, my OLED TV doesn't have any burn-in yet, so I never needed to investigate further.