what is the resolution of human eye. give brief description about it
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125 is resolution of eye
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According to Dr. Roger Clark, a digital and film imaging professional, who is also involved in several outer space imaging NASA projects, the resolution of the human eye is approximately 576 megapixels—which is a conservative estimate because this only pegs the viewing angle at 120 degrees, and the human eye actually spans a bigger field of view of 180 degrees.
However, this is a far, far cry from the technology that is being produced today. So even considering that it is just 120 degrees, our eyes are still a long way from catching up with our tech.
The full computation is as follows: 120 * 120 * 60 * 60 / (0.3 * 0.3) = 576 megapixels
576 For the rationale behind the equation, including the explanation behind how visual acuity is computed, you can refer to Dr. Clark’s full discussion here.
THE EYE IS NOT A DIGITAL DEVICE
However, one has to remember that the eye is not a digital imaging device. As Michael Stevens explained in this video, the human eye does not capture images like a digital camera. Instead of taking a snapshot, the eye is constantly moving and the brain stitches together these stimuli to form the images we see.
Further, Stevens noted that only 7 megapixels of these 576 megapixels matter. Why? Because while we have a 180-degree field of vision, we can only detect high resolution 2 degrees from the center called Foveal vision.
Lastly, the number of pixels is only one element when determining resolution quality. There are other factors that matter, including lighting, distance, and spatial resolution. In the case of spatial resolution, the number pixels on the screen remains the same even when an object goes out of focus, yet our perception of the image quality goes down.
However, this is a far, far cry from the technology that is being produced today. So even considering that it is just 120 degrees, our eyes are still a long way from catching up with our tech.
The full computation is as follows: 120 * 120 * 60 * 60 / (0.3 * 0.3) = 576 megapixels
576 For the rationale behind the equation, including the explanation behind how visual acuity is computed, you can refer to Dr. Clark’s full discussion here.
THE EYE IS NOT A DIGITAL DEVICE
However, one has to remember that the eye is not a digital imaging device. As Michael Stevens explained in this video, the human eye does not capture images like a digital camera. Instead of taking a snapshot, the eye is constantly moving and the brain stitches together these stimuli to form the images we see.
Further, Stevens noted that only 7 megapixels of these 576 megapixels matter. Why? Because while we have a 180-degree field of vision, we can only detect high resolution 2 degrees from the center called Foveal vision.
Lastly, the number of pixels is only one element when determining resolution quality. There are other factors that matter, including lighting, distance, and spatial resolution. In the case of spatial resolution, the number pixels on the screen remains the same even when an object goes out of focus, yet our perception of the image quality goes down.
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