What is the human eye? How do we see? How do we perceive the image of the world around us? It seems that not everyone remembers school anatomy lessons well, so let's remember a little about how the human organs of vision are arranged.
So, how many frames per second does the human eye see?
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The human eye perceives visual information with the help of cones and rods that make up the retina. These cones and rods perceive the video sequence differently, but they have the ability to combine disparate information into a single picture. The rods do not pick up color differences, but they are able to catch the change of images. Cones, on the other hand, are excellent at distinguishing colors. In general, the combination of cones and rods are the photoreceptors of the human eye, responsible for making the viewed image look holistic.
How many frames per second does a person see? This is a common question. On the retina, photoreceptors are located relativelyunevenly, in the center they are approximately the same number, but closer to the edge of the retina, the rods make up the majority. It is this structure of the eye that has a very logical explanation from the point of view of nature. In those days, when a man hunted a mammoth, his peripheral vision had to be adapted to pick up the slightest movement from the right or left side. Otherwise, having missed everything in the world, he risked remaining hungry, or even dead, therefore such an eye structure is the most natural. Thus, the structure of the human eye is such that it sees not individual frames, as in a storyboard for a cartoon, but a collection of pictures as a whole.
How many frames per second does the human eye see?
If you show a person one frame per second for a long period of time, over time, he will begin to perceive not individual images, but a picture of movement in general. However, the demonstration of a video image in such a rhythm is uncomfortable for a person. Even in the days of silent films, the frame rate reached 16 per second. Comparing silent film shots to contemporary films, one gets the feeling that early 20th century filming was done in slow motion. When viewing, one wants to hurry up the on-screen heroes a little. Currently, the standard for shooting is 24 frames per second. This is the frequency that is comfortable for human eyes. But is this the limit, what is beyond this range?
How many frames per second a person sees, now you know.
If you increase the frequencyframes, what will happen?
The term frame rate (fps) was first used by photographer Edward Muybridge. And since then, filmmakers have been tirelessly experimenting with this indicator. From the point of view of expediency, it may seem that it is unreasonable to change the number of frames per second, because a different number will not be seen by the human eye.
How many fps does the eye perceive? We know that 24. Does it make sense to change something? It turns out that all these efforts are justified. Modern gamers, and just people who are computer users, can say this with confidence.
Scientific justification
Scientists have proven that at a 24-fold frame rate, a person perceives not only the overall picture on the monitor, but on a subconscious level, individual frames. For game developers, this information has become an incentive to conduct further research on the capabilities of human vision. Amazingly, the human eye can perceive video at 60 frames per second or more. The ability to perceive more images increases when you concentrate on something. In this case, a person is able to perceive up to a hundred frames per second without losing the semantic thread of the video image. And in the case when attention is scattered, the speed of perception can drop to 10 frames per second.
Answering the question of how many fps the human eye sees, we can safely say the number 100.
Howdoing research?
Experiments in the field of identifying the capabilities of the human organs of vision are ongoing, and scientists are not going to stop there. For example, such testing is carried out: a control group of people views the proposed videos with different frame rates. Frames with some kind of defect are inserted into certain fragments at different time intervals. They depict some kind of superfluous object that does not fit into the general outline. It could be a fast moving flying object. In all groups, more than 50% of the subjects notice a flying object. This circumstance would not cause such surprise if it were not known that this video was shown at a frequency of 220 frames per second. Of course, no one could see the image in detail, but even the fact that people were just able to notice the flickering on the screen at such a frame rate speaks for itself.
How many frames per second a person sees is interesting to many. More interesting details will be discussed later.
Unexpected facts
Not everyone knows about such an interesting fact: experiments with displaying video images at different frequencies began more than a hundred years ago in the era of silent films. For the demonstration of the first films, film projectors were equipped with a manual speed controller. That is, the film was shown at the speed with which the mechanic turned the knob, and he, in turn, was guided by the reaction of the audience. The original speed of the silent film was 16 frames per second.
But when watching a comedy, when the audience showedhigh activity, the speed was increased to 30 frames per second. But such an opportunity to arbitrarily adjust the display speed could have negative consequences. When the owner of the cinema wanted to earn more, he, accordingly, reduced the time of showing one session, but increased the number of sessions themselves. This led to the fact that the film production was not perceived by the human eye, and the viewer remained dissatisfied. As a result, in many countries, at the legislative level, they banned the showing of films with an accelerated frequency and determined the norm in accordance with which projectionists worked. In general, why are fps and the human eye being studied? Let's talk about it.
What is it for?
The practical benefit of these studies is as follows: increasing the speed of flickering frames on the screen, as it were, smoothes the image, creating the effect of continuous movement. To watch standard video, 24 frames per second is considered the most optimal, this is how we watch movies in cinemas. But the new IMAX widescreen format uses a frame rate of 48 frames per second. This creates the effect of immersion in virtual reality with the maximum approximation to reality. This feeling can be further enhanced by the use of 3D technology. When creating computer games, developers use a cycle of 50 frames per second. This is done to achieve maximum realism of the game reality. But here the speed of the Internet also matters, so the frequencyframes may change up or down.
We looked at how many frames per second a person sees.
