How many pixels does a human eye have? How many pixels is a normal person s eye?

Retina: Widely distributed on the medial surface of the back of the eyeball, it is where the external scenery is focused and imaged. The retina is divided into two layers, the inner layer is the photosensitive layer and the outer layer is the pigment layer.

A small area around the retina facing the optic axis is the macular area, and the center of the macular area has a small concave called fovea, which is the most sensitive place for visual functions such as vision and color sense. The photoreceptor layer contains two types of photoreceptor cells, one is the cone-shaped (cone) cell, which is mainly concentrated in the macular area, Siming vision (sensitive to bright light) and color vision. The other is rod-shaped (rod) cells, which are mainly distributed in the periretinal part outside the macula, and their sensitivity to light is about 10,000 times that of cone cells.

There are 4.7 million cone cells and more than 100 million rod cells.

From the above description, it can be seen that the number of pixels in the human eye is more than 100 million pixels if calculated by the number of nerve cells. However, nerve cells perceive a continuously variable analog signal, not a mechanical digital signal, so it cannot be considered that a digital camera with 100 million pixels can compare to the human eye! It is estimated that within 20 years, humans will certainly be able to build a camera with a resolution of 100 million pixels, but the human eye will still be the most sophisticated, intelligent and complex camera.

Remember, though, that the brain can't be left out, it's the control core of this advanced camera.

Wow, then I don't buy a camera, it's too rubbish to 500w

How do you know about the first floor?

I'm also wondering where the data for 1 is coming from.

The human eye has "pixels" billion.

The average person's retina has 5 million cone cells, which are used to perceive visual colors and can imagine the human eye as equivalent to 5 million pixels. However, there are also 100 million rod-shaped cells in the eye, which are used to sense monochromatic contrast, light and dark, and play an important role in the sharpness of the image as your eye appears. Moreover, even if you think of the pixels of the eye as billions, you still underestimate them, because it is not a camera after all.

Men and women have different eyes.

The two eyes of the human body are constantly grasping the surrounding scene, hoping to obtain a visual area larger than the field of vision, and then stitch these areas together in the brain, like stitching**, to obtain a panorama. In good light, as long as the distance between the two thin lines is not less than radian (degrees), our eyes can distinguish them. That is, the equivalent pixel size is radians.

It is conservatively estimated that the horizontal viewing angle of the eye is 120 degrees, and the vertical viewing angle is 60 degrees, which is equivalent to 100 million pixels of image data.

However, the corresponding interesting thing is that when we print 6x4"** Most people can't tell the difference between 300dpi and 150dpi at ordinary sight distance. So, although the human eye and brain can work together to process a large amount of visual data, a printout of 150dpi can provide enough quality to satisfy us. It is important to point out that women have more cone cells and men have more rod cells.

As a result, girls can always see brighter colors than men, but they can't see as clearly as in bad light.

Comparing it with a camera or monitor with the human eye is somewhat inappropriate. The photoreceptor cells in the human eye are distributed on the spherical surface, and the ability to recognize details in the central area of the visual field is very different from the edge of the visual field, and the human eye and brain have long adapted to correct and compensate for vision in the course of millions of years of evolution. According to scientist, researcher, and photographer Dr. Rowe Clark, the center of a person's field of vision (let's say a 90° 90° area) has a number of pixels in the billion; If the central field of view of a person is 120°, the number of pixels will be billion.

According to his algorithm, the normal field of view should be about 180°, which means that the human eye has more than 100 million pixels. However, it is problematic to base the calculations on a 180° field of view. As we just mentioned, the resolution of the center of the field of view and the edge of the field of view is very different.

The resolution of the human eye decreases as you move towards the periphery, and the outermost part seems to be only 12°. In this way, the number of pixels of the human eye should be much less than 1 billion.

1. **When the object is clearly visible, the corresponding resolution of the field of view area is 2169 x 1213. Counting the blurred areas on the top, bottom, left, and right, the final resolution is 6000 x 4000.

2. This can't be counted! If you have to calculate, each pixel is a photosensitive point, and the human eye is photosensitive by cells, so count how many cells there are!

Mechanical scanning imaging is called "pixels", because it is composed of different set points, such as 1000 1000 = 1 million pixels, 10000x10000 = 100 million pixels. Human and animal eyes, mirrors, and optical photographs are not called "pixels". Because none of their imaging is punctate.

Hello, the vision of the human eye is adjusted by the refractive power of the refractive muscle of the eye, so that the visual image is accurately located on the retina, and the human eyesight is in the normal range at this time. Usually the human eye does not have a word for pixels, and it is impossible to determine how many pixels there are.

Clearly calculated how much he earned, how much did you earn, when should he lose, he was all good and shrewd, and then looked at the version on the basis of shrewdness, and calculated the time. For example, Lü Buwei counted Qin Shi Huang in it.

This is also shrewd, and it can be regarded as cleverness. But people are not as good as heaven, his business is done, and he ended up with his life. But he's still one of the most business-savvy people in history. People are very admired.

Normal is.

China's logarithmic eye chart, which is normal, is now the new eye chart commonly used.

To prevent myopia, we must learn to use our eyes scientifically, read and write in a correct posture, keep the distance between our eyes and books about one square foot, and read books continuously for no more than one hour, and look at the distance or look at green plants every once in a while. Do more eye exercises during breaks, eat more carrots, apples, bananas, cuttlefish, eggs and other foods, and take a walk or exercise outdoors in your spare time.

Children under the age of 18 are myopic and can recover from timely treatment after myopia due to their strong adjustment of the eyeball. It is recommended to take Joy Vision Nutrients, myopia can recover quickly, and the younger the better. You only need to take one sachet twice a day, with warm water, and stick to it for a period of time.