We buy pixels we don't see: Is your HD TV worth it?

A new study suggests that there is a threshold for what the human eye is able to perceive, a "wall" where visual information is irretrievably lost, no matter how sharp the screen.

We Buy the Pixels You Can't See: Your HD TV?

A new study reveals the existence of a threshold of the human eye that is capable of the human eye."Walls" beyond, regardless of the resolution offered by the screen, visual information is inevitable

Questions with the toxic meaning of "influencers"

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It's a question many have probably asked themselves at some point: Is that ultra high definition TV worth it?Do I really need a 4K or even 8K screen to enjoy the best viewing experience in the living room?Now, ... science has spoken, and the answer is clear: probably not.

In collaboration with Meta Reality Labs, Meta's department dedicated to virtual reality (VR) and augmented reality (AR), a team of researchers from the University of Cambridge recently revealed that there is a threshold for what the human eye can perceive.A "wall" from which, no matter how many millions of pixels a screen has, visual information is irreparably lost.That is, we buy pixels that we can never see.

This study, which has just been published in 'environmental culture', is a shot at the current marketing campaign, and sets new goals for future technologies.

For decades, every time a consumer went to a store to buy a new screen,Whether it's a TV, tablet, mobile phone.or even a carHe often comes across a lot of technical terms like Full HD, 4K, 8K, OLED, Mini-LED, pixel density per inch (PPI)... but Cambridge is not relevant or even misleading. For example, some studies have proven that a human eye with perfect vision can theoretically distinguish up to 576 million pixels, although this depends both on the size of the screen and on the distance we are from it. However, under normal conditions,In a typical living room and 4K screen, this capacity is greatly reduced.

Width outside the resolution

However, as researchers do, a real key to evaluate the screen is not enough false, but a very useful measure: - Picks per degree (PPD).This concept, although longer for the general population, is very important for our visual system.Because the access field we entered is the number of PPD steps that fit in one-degree section of the field of view.That is, it does not answer the question of how good the screen is, but how this screen looks with my space.

For centuries, which is the standard standard of 20/20 vision as a person's eye.

But Maliha Ashraf, lead author of the journal Nature, and her colleague Rafal Mantiuk of Cambridge's Department of Computer Science and Technology revised this view using modern technology.And their experimental setup, based on a sliding screen for continuous and precise control of the resolution perceived by the observer, showed that the actual limit was much higher than previously thought: for grayscale and central vision images, on average, 94 PPD.This means that although the threshold is higher than the previous dogma, it is still a very specific physical limit.

But this study not only reached the 60 PPN 60 PPD level of central vision, but also provides the highest detail and critical information we can achieve in our vision, such as color and light.This is where biology plays a little flash for us.

Ashraf and his team actually discovered that our ability to resolve details in general decreases when we perceive them in color.The average limit for red and green patterns was 89 PPD, close to achromatic vision, but for the yellow and purple axis the limit dropped to 53 PPD.Mantiuk explains this in simple language: "In reality, our brain is not capable of perceiving color details very well. It processes the data and shows us what it thinks we should see."

This deficiency occurs in peripheral vision (anything that is not true in the center of vision).In fact, the density of voltoreception, which is responsible for visual perception (cones), decreases dramatically as we move away from the fovea (the central paluaarkin).Therefore the perfect pixel can be seen in the middle of the screen so it won't be clicked on the wair.

Of course, this biological restriction has a direct application in reality, as augmented reality (AR) is very clear to the eye and, therefore, PPD is paramount.It is the business that the business is a 'foveted' feeding' process, which will not be visible to the eye and will increase the work, in which all energy will be focused on what the user is looking for.This is an excellent example of visual perception being a concept of visual biology technology.

Every day is an example

And now let's go back to the living room, because research has given us the correct golden rule.If the distance between the TV and the furniture is 2.5 meters (QHD average) it is more than the additional visual effects. In other words: the difference between 4K and 8k at this size and at this distance is not visible to most people.

For those who 4k or 8th to get to the cup of the TV is at the end of the pixel cases.The bottle is not sure in your eyes.

"If you have more pixels on your screen - said Mantidik - it will be more effective, the cost requires more energy."So we wanted to know more power."So we wanted to know the power of production."

So the Cambridge study and meta-analysis called for the market to materialize.If our eyes, our knowledge, sets the ceiling at 94 as a level (PPD), why bother even bothering with tall and determined people who will take them to 150 PPD?

In Ashraf's words, "As massive engineering efforts are undertaken to increase the resolution of TV, mobile, AR and VR displays, it is important to know the maximum resolution at which further improvements no longer provide any substantial benefit. But no research has yet truly quantified what the human eye can see and what its perceptual limits are."

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