Why can t you smile when taking big photos for protection? Experts tell you the core reason

Why can't you smile when taking photos for protection? Experts say that the main reason is that the face identification software of the airport cannot be identified. Passport-Photo.Online biological characteristics photography and travel expert...


Why can't you smile when taking photos for protection? Experts say that the main reason is that the face identification software of the airport cannot be identified.

Passport-Photo.Online biological characteristics photography and travel expert Karolina Turowska said that computer algorithms do not hurt people's brains. When comparing three-dimensional human faces and two-dimensional photos, it is necessary to accurately "distinguish points by point" and measure the facial features of living people, including the pupils, two ears, the distance between the nose and mouth, the width of the mouth and eyes, etc.

She said that smiling faces will change the ratio of the distance between the various organs on the face, making it more difficult for computers to recognize them.

This is the reason why many countries stipulate that when looking at the faces on photos, the expression must be "neutral" and unbiased.

Moreover, each country may have different "neutral" standards. For example, if a French license applicant is bending on the corners of his face and mouth in the photo, he may be returned. The British regulations are "the entire head and upper shoulders are not allowed to have other objects or people", with pure butter or light gray background and red eyes.

The British license also requires "closing your mouth, looking directly at the lens, and no hair or anything covering your face in front of you." The head must not be covered unless it is for medical or religious reasons. Unless you have to wear a glass, you cannot have a glass in your photos.

The US regulations are more stringent: color, color in the last 6 months, white or near-white background, neutral expression and silence of two eyes, wearing daily clothes, not wearing uniforms, nor religious clothes (except for daily clothes). No hats are allowed, and no hair can be covered. Except for those who wear hats in religious customs and daily life, but the faces shall not be covered by any cover, including shadows.

The lens regulations are also more severe - unless the eye is just opened, the doctor requires that the lens be worn, and the applicant must present the doctor's signature certificate. The frame of the eyeglass must not cover the eyes, and the lens must not shine, project, or reflect. People who usually wear hearing aids can take photos while wearing them.



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