It was getting brighter, and after a night of drizzle, the streets had been washed clean. A group of security agents and policemen in police uniforms and plainclothes were searching carefully on this small street.
Xu Hui, who had not slept all night, had bloodshot eyes. At this moment, he was leaning on the side of the car, looking at these busy people, and he didn't know where his thoughts had gone.
"Captain Xu, let's have some breakfast. I bought freshly baked hot buns and soy milk." A young female agent came over with a bag and greeted him.
"Okay, thank you, I'm really a little hungry." Xu Hui, whose thoughts were interrupted, took the steamed buns and soy milk handed by the female agent and said with a smile: "Give it to everyone as soon as possible, so that everyone can also They all have a belly pad."
"Team Xu, have you found anything?" A young detective walked over quickly carrying an evidence bag: "Just now the cleaner found a fruit phone in the trash can not far away. The phone was intact, but it was turned off. Status. The phone number has been verified. This is the phone that Chen Mingcheng lost after talking to 'Viper'.
The cleaner saw us looking for something, so he handed it to us with his cell phone. "
Xu Hui looked at the old fruit phone in the evidence bag and couldn't help but ask: "Have your fingerprints been collected?"
"It was collected, but there is nothing else on it except the cleaner's fingerprints. It was wiped clean." The agent said helplessly.
Xu Hui nodded and said: "It's what Chen Mingcheng did, and it was handed over to the technical department for cracking. I want to know the contents in the shortest possible time.
In addition, collect surveillance videos from around here for me. From the interrogation of the enemy spy codenamed 'Viper', I learned that his last phone call was to Chen Mingcheng.
In other words, Chen Mingcheng has been commanding the entire operation remotely from nearby. If this is the case, then we will definitely be able to find clues from these surveillances.
In addition to these surveillances on the streets, you also need to mobilize some shopping mall store entrances, as well as 24-hour convenience stores, movie theaters, cafes, fast food restaurants, etc. It was still raining that night, so it was impossible for him to stay on the street. He should have settled in a nearby store.
Although several years have passed and Chen Mingcheng's appearance has changed, his walking posture, body proportions, and skull cannot be changed. I can definitely use these new data types to compare and find out among the people in the surveillance, which one is Chen Mingcheng. No matter how powerful you are, you can't escape my fiery eyes. "
Everyone has their own special characteristics or marks, such as fingerprints, irises, lip lines, etc. In fact, there are many physiological characteristics or physiological ID cards that can represent our personal identity, such as facial recognition that we often use.
Facial recognition is generally divided into two types: 2D plane and 3D three-dimensional facial recognition. First of all, the first 2D plane is the image recognition technology used to compare the captured facial image with the original stored facial photo. The coincidence degree meets the standard. approved.
However, this method has a major drawback, that is, it cannot identify which ones are real people and which ones are photos. It is possible to use a photo to fool this 2D facial recognition technology.
As for 3D facial recognition technology, it records the 3D contour data information of a person's face, and then compares it with the stored 3D facial contour data. This can effectively prevent someone from trying to get away with a photo. .
However, this kind of 3D facial recognition also has flaws, that is, if someone holds the person's 3D face mask or a 3D head model, they can fool the 3D facial recognition system and pass the verification.
So now many 3D facial recognition technologies add infrared sensing and eye-catching technology to them. When performing 3D facial recognition, the system will also simultaneously sense the temperature of the face being recognized and the movement of the eyeballs to verify whether it is a real person and not a mask. Only when these conditions are met at the same time can the verification be passed.
Each person's face is our best physical identity, and it is unique. But after some plastic surgery, these faces can be copied. But no matter how you copy it, it is only superficial, and it is difficult to change the structural outline of the skull.
Therefore, we have seen in many movies, TV dramas and programs that police forensics can use the victim’s skull and then restore it to obtain photos of the victim before he or she was alive.
The current artificial intelligence system can then calculate and generate 3D skull outline data based on the suspect's photos, and then based on the huge surveillance screen, compare the faces of these people in the surveillance screen. Features and the generated 3D skull outline data are then compared to find relevant suspects.
In this way, no matter how disguised the suspect is, it will be difficult for him to escape the sharp eyes of the system.
Of course, single-condition screening is prone to errors and has limited accuracy. This requires adding some more search conditions to the artificial intelligence system.
Just like when we search for information in a search engine, the more conditions we provide, the more accurate the search results will be.
Although each of us is walking in the same way, there are subtle differences in our walking postures. This is a habit we have formed subconsciously, and it is difficult for us to notice it.
The artificial intelligence system can detect these subtle changes and identify the person.
In addition to walking posture, there are also human body proportions.
In art, the proportions of the human body are divided into seven upright, five sitting, five-legged, three-and-a-half, three-court and five-eye. In other words, the body proportion of a normal Asian is seven heads, which is relatively standard.
Some painters will appropriately exaggerate this proportion in order to reflect the human figure. For example, when drawing a model, the head is usually expanded to nine, so that the model drawn in this way is particularly tall and attractive.
In real life, everyone's body proportions are actually different. Some people are fatter, some are thinner, some have longer legs, and some have rounder heads.
It may be difficult to filter such a condition alone, but when combined, it is also a very valuable clue condition. Combined with other previous conditions, the suspect's identity can be basically locked.
This is the convenience and help that artificial intelligence technology brings to modern case detection, and our country’s application of artificial intelligence technology has always been at the world’s advanced level.
"With so many surveillance images, it will take a lot of time to collect and compare them. Is it too late? This Chen Mingcheng may have run away long ago when he saw the mission failed." The young agent frowned and said worriedly.
No, Xu Hui shook his head very firmly and said: "Currently, the stations, airports and major entrances and exits in Anxi city have set up cards to verify the identity of people. Chen Mingcheng is more cautious when he comes. He is not sure whether we have him." Before his identity, he did not dare to take the risk of leaving the city.
I'm sure he is still in the city now and is already thinking of ways to hide his identity. "
"How to hide it, or continue to dress up as a woman?" The young agent laughed.
"Hehehe, maybe it is really possible. But no matter how hard he hides this time, I will arrest him." Xu Hui smiled, and then said firmly.
