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 us recall a little about how the human organs of vision are arranged.
So how many frames per second does the human eye see?
Structure
The human eye perceives visual information through the cones and rods that make up the retina. These cones and sticks perceive the video sequence differently, but have the ability to combine disparate information into a single picture. The sticks do not catch color differences, but are able to catch the change of images. Cones, on the contrary, perfectly distinguish colors. In general, the combination of cones and rods is the photoreceptors of the human eye, responsible for ensuring that the viewed image looks holistic.
How many frames per second does a person see? This is a common question. Photoreceptors are relatively uneven on the retina of the eye, in the center there are about 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 was hunting a mammoth, his lateral vision should have been 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, so this structure of the eye 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 not perceive images separately, but the picture of movement in general. However, demonstrating a video image in such a rhythm is uncomfortable for a person. Even in the days of silent cinema, the frame rate reached 16 per second. When comparing shots of silent films and modern films, there is a feeling that in the beginning of the 20th century they were shot in slow motion. When viewing, I just want to rush the screen heroes a bit. Currently, the standard for shooting is 24 frames per second. This is the frequency that is comfortable for the human organs of vision. But is it the limit that is beyond the limits of this range?
How many frames per second a person sees, now you know.
If you increase the frame rate, what will happen?
A term such as frame rate (fps) was first used by photographer Edward Maybridge. And since then, filmmakers have been tirelessly experimenting with this indicator. From the point of view of expediency, it may seem that changing the number of frames per second is unreasonable, because a different amount 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 users of computers, can say this with confidence.
Scientific background
Scientists have proved that with 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 became an incentive to conduct further research on the capabilities of the human organs of vision. Amazingly, a human eye can perceive a video sequence at a speed of 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 one hundred frames per second, without losing the semantic thread of the video image. And in the case when the attention is scattered, the perception speed can drop to 10 frames per second.
Answering the question of how many fps the human eye sees, we can safely call the number 100.
How is the research done?
Experiments in the field of identifying the capabilities of the human organs of vision are carried out constantly, and scientists are not going to stop there. For example, they conduct such testing: 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 can be a fast moving flying object. In all groups, more than 50% of subjects notice a flying object. This circumstance would not have caused such a surprise if we did not know that this video was shown at a frequency of 220 frames per second. Of course, no one could examine the image in detail, but even the fact that people were just able to notice 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 considered below.
Unexpected facts
Not everyone knows about such an interesting fact: experiments with showing video images with different frequencies began more than a hundred years ago in the era of silent cinema. To demonstrate 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 twisted the handle, and he, in turn, was guided by the reaction of the audience. The initial speed of the silent film was 16 frames per second.
But when watching comedy, when the audience was very active, the speed was increased to 30 frames per second. But such an opportunity to arbitrarily adjust the speed of the show could have negative consequences. When the owner of the cinema wanted to earn more, he accordingly reduced the time for 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, the demonstration of films with an accelerated frequency was banned at the legislative level and the norm according to which projectionists worked was established. In general, for what are fps and the human eye studied? Let's talk about it.
What is it for?
The practical benefits of these studies are as follows: an increase in the speed of flickering of frames on the screen smooths the image, as it were, creating the effect of continuous movement. For viewing standard video, the best speed is considered to be 24 frames per second, this is how we watch movies in movie theaters. But the new widescreen IMAX 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 gaming reality. But here, the speed of the Internet also matters, so the frame rate can change to a smaller or larger side.
We examined how many frames per second a person sees.