I'm a Super Cop

"Looking for abducted children? It's a hard job Lu Weiwei takes a breath of cool air. Her voice is loud You can hear it all over the dining room.

Gao Xu is embarrassed to scratch his head

It's still a little awkward to look at the people around you.

He is not a person who is good at expressing himself, and so is his partner Liao Kai. Therefore, the two partners will not look gloomy.

In addition, they were working in different places, so they spoke very quietly.

However, as a policewoman, Lu Weiwei's voice is much larger than the two of them.

From the beginning of the conversation, Gao Xu and Liao Kai felt the "enthusiasm" of Jiangnan City police

"Ha ha, yes. This time, we have seven working groups, more than 20 people in total, sent to different cities to look for the whereabouts of the abducted children."

Gao Xu took a sip of the drink Gu Chen bought, and continued: "our group specially came to Jiangnan City to look for a little girl who was abducted and trafficked ten years ago."

"Ten years ago?" Gu Chen is also stunned for a moment, feeling that things are not so simple.

Police officer Wang also said: "things have changed for a long time ten years ago. It is not even more difficult to find out the cases that were not solved ten years ago, but to find them later 10 years later?"

"No matter how hard it is, you have to find it." Liao Kai, who seldom spoke, finally confided: "we also know that this kind of task is very arduous, but we come here with the latest technology to do an experiment, or a kind of attempt."

Wang Wei and officer Lu Wei don't know what to look at.

Three people big eyes stare small eyes, I feel this is a bit interesting.

In the case ten years ago, two foreign police officers with the latest technology can find abducted children?

If there is no definite target, it can be said that the search is no different from looking for a needle in a haystack.

Gu Chen had been in contact with some cases of lost children before, but they were all found on the same day when they were lost.

This is not a very difficult thing to have a perfect monitoring network.

But ten years ago lost children, now to find, not to mention the vast sea of people, is to give you a general scope, that also needs to do a lot of work.

Lu Weiwei couldn't wait to ask, "what kind of cutting-edge technology are you bringing? Is it something new? "

Gao Xu and Liao Kai looked at each other, just thinking for a few seconds, Gao Xu blurted out: "we cooperated with a high-tech enterprise in Pengcheng to develop a cross age face recognition algorithm."

"Cross age Face recognition algorithm? " Lu Weiwei was stunned for a while, and then he calmed down and said, "what is this thing?"

"To put it simply, we should use this face recognition technology to solve the face recognition problem of the same person in different age groups, and infer the appearance of children after growth through data analysis, right? Officer Gao, officer Liao. "

Gu Chen quickly guessed the cutting-edge technology that the other side said according to his previous knowledge of face recognition skills given by the system.

Gao Xu and Liao Kai's eyes are obviously stunned for a moment, and they both look at Gu Chen in an incredible way.

Gao Xu was surprised and said, "Gu Chen, this technology is still in the testing stage, how can you know?"

"Yes, this time the bureau sent our seven working groups to different cities to verify the operability of this technology. In principle, no other brother units should know about it, right?" Liao Kai also expressed his doubts.

Gu Chen was just skeptical before, but now he gets the result from Gao Xu and Liao Kai, and suddenly feels relaxed.

The theory of technology previously mastered by Xinshuo is still useful. At least, I have this technology at present.

However, there is no direct application of how to control.

"I just happened to see some of them in relevant academic forums. There are often discussions about face recognition, and I remember some of them."

Gu Chen casually finds a reason for Tang Sai.

Gao Xu said with a smile: "it seems that the police in Jiangnan City have high professional requirements. For example, we only know to work hard. These too professional things are not our strong points."

"What kind of operation are you bringing this time?" Gu Chen is also curious about how this technology should be implemented.

Gao Xu looks at Liao Kai beside him.

They nodded.

Later, Gao Xu opened his backpack, put a laptop on the table, opened it and said, "losing a child is a pain that any family can't bear. It's very difficult to find clues in the vast sea of people."

"Yes, it's like looking for a needle in a haystack." Officer Wang was drinking a drink, staring at Gao Xu's computer all the time.

"Therefore, the latest face recognition technology enables artificial intelligence to deeply learn the growth rules of facial features. With a child's photo, it can realize cross age face recognition."

Gao Xu opened his own document

Suddenly, the folder, hundreds of face images appear in the page.Lu Weiwei and officer Wang quickly stood up and walked behind Gao Xu.

"This What is it? " Lu Weiwei curiously said: "is this your technology?"

"It should be said so. This is a list of hundreds of people who are similar to the lost children and her parents through the combination of model and data with the photos of the abducted girl when she was two or three years old." Gao Xu said.

"If the age of the little girl who was abducted is three years old, it will be ten years later, and the little girl will be at least 13 years old," Wang said

"That's right. So we screened out these people through big data. They were girls around 13 years old, and their appearance was within the scope of automatic matching and screening by machines."

Gao Xu said, also put two photos on the table.

"This is a picture of the little girl before she lost her way, when she was less than three years old."

Then Gao Xu pointed to another one and said, "this is a face model photo established by artificial intelligence after learning the growth law of facial features through the latest face recognition technology."

"That is to say, you use this model to build a picture, and then filter out hundreds of similar photos?" Asked Gu Chen.

"Yes." Liao Kai nodded and said, "this is a major breakthrough, because we can narrow the scope of our search."

Gu Chen held his chin and hesitated: "you use the existing face recognition system to test, but the abducted children have been missing for more than ten years. With the gradual growth of children's age, the facial shape, eyes, corners of the mouth, forehead, skin and other logo features will change significantly, and the face recognition rate of the machine will also decline. With a picture of a 3-year-old child, the effect is very good Not ideal. "

"Guchen, that's good enough." Officer Wang felt that Gu Chen didn't need to find fault, so he said: "the scope can be reduced to a few hundred people. Although it will take a lot of time and energy to continue the investigation, it will be much better than looking for no target. At least, there is a target."

"I think it's good, too." Lu Weiwei couldn't help wiping her mouth and said: "once the scope is determined, it's only a matter of time to find the abducted child. Even if a person is investigated one day, it will come to the conclusion."

Listening to the encouragement of police officer Wang and Lu Weiwei, Gao Xu nodded excitedly and said with a smile: "to be honest, we are facing a lot of pressure this time. If the system jointly developed by Peng city Bureau and this high-tech enterprise is implemented, we need seven working groups to make a breakthrough."

"At present, however, we can only conduct a step-by-step investigation. At first, we have been to five cities and investigated nearly 30 people, but the efficiency is not high. This time we come to Jiangnan City, I hope we can make some achievements."

Liao Kai on the other side also said: "yes, although this new technology is not mature yet, our country is already in the first echelon of this technology in the world. The application of this technology has been able to help the police and greatly reduce the search scope of children abducted for more than ten years. We are no longer looking for a needle in a haystack."

"How long have you been checking?" Gu Chen suddenly asked.

Gao Xu Leng for a moment, some depressed way: "has been in different cities, 44 days of verification."

"44 days?" Gu Chen is a little surprised.

"Yes." Although Liao Kai was very tired, his working attitude was still very serious: "we have been working for 44 days in a row, and many working groups have not made corresponding achievements."

"If in the next investigation, the longer we check, the more pressure will be put on our working groups and the higher-level technical departments. Therefore, we all try our best to get the results first."

"No wonder you didn't seem to sleep well for days." Lu Weiwei laughed and said, "I'll buy you more red bull later. You can have a good sleep in our Furong Branch police dormitory tonight. We will arrange the docking work with you tomorrow."

"Thank you very much."

"You're welcome."

After dinner, Gu Chen takes Gao Xu and Liao Kai to the police dormitory area.

After registering their information, a large standard room was arranged for them.

"Although there is no comfortable hotel, there are all kinds of things you should have. If you need any help, you can call my phone number."

Gu Chen then informed the two people of his mobile phone number.

"Thank you so much, guchen." Gao Xu also rubbed his bloodshot eyes and said with a bitter smile: "we have not had a good sleep for 44 days. The first thing we open our eyes every day is to start checking the personnel information within the scope, for fear of wasting time."

"Thank you for your efforts." Liao Kai also said thanks for the victims.

"No matter what, we are all policemen and should help each other." After Gu Chen finished, he said, "by the way, Gao Xu, can you show me your picture of the little girl again?"

Gao Xu was stunned for a moment.

Gu Chen said with a smile: "well, about your work docking, maybe tomorrow elder martial brother Wang will arrange, so I want to know about the relevant situation first, if you can show me the information of the abducted girl, it will be better.""Ha ha, so it is?" Gao Xu is also hesitated by Gu Chen's sudden concern. However, after knowing the situation, he suddenly feels relaxed.

"OK, then you can take it and have a look, and give it back to me tomorrow." Gao Xu looked at Liao Kai beside him and said with a smile, "Liao Kai and I have traveled a long way. We are really tired. We will take a bath and go to bed."

"Have a good dream." After taking the information and photos given by Gao Xu, Gu Chen helps the two close the door and goes straight back to his dormitory.

Due to the personnel transfer factor, Han Yunfei, who lived in the dormitory before, was transferred with Xiao Yang.

So the four person dormitory has become a three person dormitory. Now only Ding Liang and Huang Zunlong still live here.

Opening the door, Ding Liang is lying on the bed listening to music, and Huang Zunlong is leaning against the bed to read a novel.

Usually at this time, two people will go outside, but today's rainstorm, we naturally shrink in the dormitory.

"Gu Chen, what's in your hand?" Huang Zunlong found the files in Gu Chen's hand at a glance.

"Do you want to see the information of abducted children?" Asked Gu Chen.

Huang Zunlong waved his hand: "that still forget it, you Gu Chen brought the work back to the dormitory, this habit is not good."

"It's ok if you can solve the case. What do you do with all that?" Gu Chen make complaints about it, and throw it on the desk, then sit on the seat and look it up.

Gu Chen first took out a picture of the little girl when she was two or three years old. Her eyes blinked quickly twice.

With a "click" sound in her mind, the picture of the little girl was quickly cut into her mind.

In the visual interface at this time, scanning is displayed on the left and saving is displayed on the right.

Gu Chen directly clicks scan.

Soon, the picture of the little girl, covered by a green grid in the vision, a line with lightning, constantly ups and downs.

"Ding!"

With the end of the scan, there was a ringing sound in my mind.

Gu Chen conducted the first on-site audit according to his own facial recognition skills.

Soon, another photo appeared next to the original one, and it was shown at the age of four.

"Can you really do this?" Gu Chen is a little overjoyed. This skill is much faster than expected.

Through the locking of the little girl's face shape, eyes, corners of mouth, forehead, skin and other logo features, although it changed after a year, the basic points did not change.

"Maybe the police in Pengcheng, the direction of cooperation with high-tech enterprises, is also the calculation in this respect? However, the face recognition rate of the machine will decrease with the age of the abducted person. With a picture of a 3-year-old child, the effect is not ideal. "

Gu Chen turns to look at Ding Liang and Huang Zunlong behind him.

Both of them didn't find their own abnormality, so Gu Chen looked again at the second picture, which was the calculation photo of the little girl at the age of four.

After that, Gu Chen again scanned the second photo with face recognition skills, and got a picture of the girl at the age of five.

So, in the third and fourth pictures, until Gu Chen scanned the picture of a 13-year-old girl, a clear outline appeared in Gu Chen's visual interface.

Gu Chen quickly compared the machine calculus photos provided by Gao Xu and Liao Kai.

It can be said that the gap between the two is quite large.

If the photo provided by Gao Xu and Liao Kai is a general appearance, Gu Chen uses his own face recognition skills to scan and get a clear picture.

Now my own photos are more accurate than those provided by Gao Xu and Liao Kai.

"That's it." Gu Chen tried several times, but he couldn't extract the photos. He could only take out a pen and paper from the drawer and began to sketch on straw paper by using the image of the picture in his mind.

Half an hour has passed

Gu Chen wiped the sweat on his forehead and felt that the portrait in his hand was more vivid.

Compared with the photos simulated by the machine, Gu Chen's appearance is obviously more three-dimensional.

"My God, when did we Gu Chen become a great painter?" Ding Liang did not know when to gather behind, saw Gu Chen's sketch, the whole person's face was startled.

Huang Zunlong also came to Gu Chen's side. He picked up the sketch and compared it with the photos calculated by the machine. He could not help saying, "ah, Gu Chen, although your painting is very good, it doesn't look like the characters in this picture?"

"I didn't say I'd paint by photo." Gu Chen nailed the sketch to the target on the wall with a dart, and then nailed the picture of machine calculation to the side of the sketch.

"Ding Liang, Huang Zunlong, you two help me to have a look, give some advice." Gu Chen said.

Ding Liang held his chest in both hands and pondered for a long time. He said, "your sketch is more vivid, just like the real one, and this photo..."

After hesitating for a few seconds, Ding Liang looked up and said, "this photo gives me a feeling, a bit like a simulation character."

Gu Chen said "en" and did not agree or oppose.In fact, Ding Liang has said something about it. It's true that the new face recognition algorithm based on machine simulation has a reliable way of cross age calculation, but the error is also large.

After the artificial intelligence deeply studies the growth law of facial features, the face model photos can only be a kind of relative existence.

Therefore, a large amount of data will be obtained by filtering the photos after cross age calculation.

The reason for this is that the basic features of Liao Xu's head and face are gradually increased with age, such as the size of his head and the size of his face.

Therefore, the face recognition rate of the machine will also decline.

Looking at this picture of his vegetarian cat, Gu Chen couldn't help thinking: "if the recognition rate of machine calculus will decline, then I will use my face recognition skills to screen one by one. Can this picture represent what the three-year-old girl looks like ten years later?"

Although not sure, Gu Chen has mastered some of the use of face recognition skills.

He now encounters this kind of photo with certain difficulty characteristics and a certain age span, but he no longer only makes judgment based on the existing data.

As a result, Gu Chen put his sketched portrait back in his file bag and prepared to take it to the office tomorrow to compare it with Gao Xu's computer to see if the characters he sketched really exist in Gao Xu's computer files.