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How many “megapixels” is the human eye

We know how many megapixels the camera has, and how many megapixels do we have?

First of all, I want to begin by specifying that the human eye has an analogue structure and it is not entirely possible to measure it with a digital term, the pixel size. The vision center in the brain can’t perceive the light information from the eyes exactly like a film screen. The brain renders the image by interpreting the light information. This image is constantly refreshed from the eye to the brain, depending on the speed of the neurons, ie neurons.

For example, considering this as a FPS (frame per second) value, the 30FPS value in a video movie is enough for our eyes to see the image fluently. But this doesn’t mean that the human eye is 30FPS. The human eye also has a certain threshold value and when it looks at an object that passes faster than that value, it can’t catch its movement and nothing seems to pass. Today, the motion of a projectile can be easily examined in milliseconds using high-speed cameras.

We can do a simple test for the speed of the human eye. First, set the vertical scanning frequency of your CRT computer monitor to 60 Hz. To do so, right-click on the desktop and follow the features> settings> advanced> monitor tabs to access the Hz settings. When looking at the screen at a distance of 30cm after 60 Hz, focus on an object on the side of the monitor, but see the monitor at the tip of the monitor. In this way, you’ll notice how the screen refresh, which you don’t feel when you’re normally looking straight, scans the page by page. If you notice 60 Hz while you’re looking normal, try it at 75 Hz. I can notice myself up to 75 Hz, but I can’t see page page transitions at 85 Hz and above. This speed of the eye may vary from person to person. Faster eye reflexes are seen in people who are constantly working with high-intensity care and who are constantly watching and moving things with their eyes.

The retina, which contains the light sensors of our eyes, has a neural structure. The light sensors in the retina are countable sizes, as in the sensors of digital cameras. In fact, the number of these sensors in the hollow part of the retina (fovea) is higher than in the other parts of the eye and the light falling on the retina is transmitted to the brain by compression. That is why our eyes sometimes play a gamet o us and we can’t see objects shapes. Visual quality is not affected as long as the number of light sensor cells in our eye (or pixels) is above a certain critical value. Because the brain completes the image. Even if we don’t have a single eye, our image resolution doesn’t decrease, only our sense of depth disappears. Even in the cases where the majority of the light cells in the eye are devastated, we do not see a part of the image as the retinal detachment. This is like this: You close half of the lens of the camera with your hand, but you still see the image in full; because the processor of the camera completes the missing part.

 In order to express the visual capacity of the eye in megapixels, it is necessary to test the receptors in the eye in pixels and at what level the brain can create a scene. The human eye is a small organ and it does everything with a very small amount of light. However, the lenses of the high-megapixel cameras are quite large and accordingly, in a dark scene, they see more enlightened space than the human eye. It is possible to say clearly that if I take the highest megapixel ratio with an eye-sized lens and then take the picture and then compare what people see by looking at the same view, I’m sure that the human eye will be able to detect and define more details. If the digital camera is photographed, it can be seen that it can capture less detail when viewed and examined in the same way that it is seen without zooming in. Confident that the human eye will be able to detect and define more details. If the digital camera is photographed, it can be seen that it can capture less detail when viewed and examined in the same way that it is seen without zooming in.

Therefore, the human eye is a perfectly created organ that cannot be compared to the image of artificial lenses. But it can be expressed in megapixels which is a digital data. The calculation of this can be achieved by introducing an approximate value if the conditions mentioned above are met. But we should keep in mind that the term megapixel is actually nothing other than a concept that displays the number of pixels taken from a scene. Of course, detail will increase as the pixel increases, but in order to compare it with the ratio corresponding to the human eye, the subject should be considered as a major research subject and examined in laboratory conditions.

In a clearer language:

In daily life we hear things like “Wow, look  at that man’s mobile phone camera, it is 2.0 MP  or we say “ the technology has improved a lot”. Sometimes even we say  “That camara has more clear vision than my eyes”. The researches shows  and reveals us how far our bodies are beyond today’s technology.

Our eyes are not a camera that captures instant shoots that are edited on a single draft. It is more like video series. Our eye, , moves momentarily with small angles and constantly updates itself to reflect the details around us to the brain. We also have two eyes, and our brain collects signals from both eyes to further increase the resolution. To collect more information, we move our eyes around things we see. For these reasons, the coexistence of the eye and brain allows us to obtain data at a much higher resolution than on a machine, due to the large number of photoinitiators in the retina.  The equivalent megapixel values given below are the scientific details that explain how clearly the human eye sees a scene.

Let’s make a sample with the data describing the resolution of the human eye: now suppose that there is an image in front of you at an angle of 90 to 90 degrees (that is, the angle of our eyes), just like watching a view outside the window. In this case the average number of pixels for an eye:

90 degrees * 60 arc-minutes / degrees * 1 / 0.3 * 90 * 60 * 1 / 0.3 = 324,000,000 pixels (324 megapixels).

In fact, we don’t always get so many resolutions, but our eyes move around the detail you want to see all the details you want in a scene. But the human eye sees a more angle in this respect, which is close to 180 degrees. Even if we assume we can look at a 120 degree angle and think:

120 * 120 * 60 * 60 / (0.3 * 0.3) = 576 megapixel data.

The true angle value that the human eye can see, of course, corresponds to much more resolution. To record a data in this structure (with resolution), it should be a camera that is advanced enough to allow recording in a lot of space.

Now, leaving the theoretical knowledge aside and passing the essence of the word, the landscape that you see when you look out of a window-like boundary is equivalent to 324 megapixels in your brain. If you don’t have a man to block your image, 576 MP.

Take care of your eye because it is a wonder of technology.

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Melisa Ayşe Demirel
KernelBlog.org | Author - Translator