I am a super cop

Chapter 276 Sketch [Seeking Monthly Pass]

"Looking for trafficked children? This is hard work!" Lu Weiwei gasped, her voice was loud... the whole cafeteria could hear it.

Gao Xu scratched his head in embarrassment...

It was still a little embarrassing to see the strange gazes from the people around.

He is not an expressive person, and neither is his partner Liao Kai, so the two of them will not look boring when they work together.

Moreover, the case was handled in a different place, so the two talked very quietly.

However, Lu Weiwei, who is a policewoman, has a louder voice than the two of them.

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

"Hehe, yes, this time we have seven working groups, with a total of more than [-] people, sent to different cities to find the whereabouts of those trafficked children."

Gao Xu took a sip of the drink that Gu Chen bought, and continued: "Our group came to Jiangnan City specifically to find a little girl who was trafficked ten years ago."

"Ten years ago?" Gu Chen was also taken aback for a moment, feeling that things were not that simple.

Police officer Wang also said: "Ten years ago, things were different. Wouldn't it be even more difficult to find a case that was unsolved ten years ago?"

"No matter how difficult it is, you have to find it." Liao Kai, who rarely spoke, finally confided: "We also know that this kind of task is very difficult, but we are here with the latest technology, so it can be regarded as an experiment here, or Call it an attempt."

Gu Chen glanced at Police Officer Wang and Lu Weiwei next to him without knowing it.

The three of them stared at each other, feeling that this was interesting.

In the case of ten years ago, two foreign police officers brought the latest technology to find the trafficked children?

If there is no definite goal, it can be said that this search is no different from finding a needle in a haystack.

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

This is not a difficult thing to have a complete monitoring network now.

But looking for a child who was lost ten years ago, not to mention the huge crowd, just giving you a rough range requires a lot of work.

Lu Weiwei couldn't wait, and asked, "Then what kind of cutting-edge technology did you bring? Is it something new?"

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

"Cross-age... face recognition algorithm?" Lu Weiwei was stunned for a moment, and then she calmed down and asked, "What is this stuff?"

"To put it simply, it should use this face recognition technology to solve the face recognition problem of the same person at different ages, and use data analysis to infer what the child will look like when he grows up, right? Officer Gao, Officer Liao .”

Gu Chen quickly guessed the cutting-edge technology mentioned by the other party based on his previous knowledge of face recognition skills given by the system.

Gao Xu and Liao Kai stared blankly for a moment, and they both looked at Gu Chen in disbelief.

Gao Xu said in surprise: "Gu Chen, this technology is still in the testing stage, how do you know?"

"That's right, this time the bureau sent our seven working groups to different cities to verify the operability of this technology. Logically speaking, no other brother units should know about it?" Liao Kai He also expressed his doubts.

Gu Chen was only skeptical before, but now that he got the result from Gao Xu and Liao Kai, he suddenly felt a burst of relief.

Xin said that the technical theory he had mastered before was still useful, at least this technology, which he currently owns.

But how to control it, there is no direct application yet.

"I just saw some by chance in relevant academic forums, and there are often discussions there. I also remembered some related content about face recognition."

Gu Chen casually finds a reason to stop in the past.

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

"Then what kind of operation method did you bring this time?" Gu Chen was also curious about how this technology would be implemented.

Gao Xu glanced at Liao Kai beside him.

The two nodded.

Afterwards, Gao Xu opened the backpack, put a laptop on the table, opened it and said, "The loss of a child is a pain that no family can bear. It is very difficult to find clues in such a huge crowd."

"That's right, it's like finding a needle in a haystack." Police Officer Wang kept staring at Gao Xu's computer while drinking his drink.

"So the latest face recognition technology can enable artificial intelligence to deeply learn the growth laws of facial features, and with a child's photo, it can recognize faces across ages."

Gao Xu clicked on his own file...

Immediately, hundreds of face images appeared on the page in the folder.

Lu Weiwei and Officer Wang quickly stood up and walked behind Gao Xu.

"What... is this?" Lu Weiwei asked curiously, "Could this be your technology?"

"It should be like this. This is the picture of the abducted little girl when we were two or three years old. Through the combination of models and data, we got hundreds of information about the lost child and her in the vast crowd. A list of people whose parents have a high degree of similarity." Gao Xu said.

Officer Wang mentally said: "If the little girl was abducted at the age of three, it will be ten years later, and the little girl must be at least 13 years old."

"That's right, so we screened out these people through big data. They are all girls around 13 years old. The appearance of these people is within the scope of automatic matching and screening by machines."

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

"This is a photo of the little girl before she got lost. She was less than three years old at the time."

Then Gao Xu pointed to another one and said, "This is a photo of a face model created by using the latest face recognition technology to let artificial intelligence deeply study the growth laws of the five sense organs."

"That is to say, through the photos constructed by this model, you screened out these hundreds of similar photos?" Gu Chen asked.

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

Gu Chen held his chin hesitantly and said: "You use the existing face recognition system for testing, but the trafficked children have been missing for more than ten years. As children grow older, the face shape, eyes, mouth corners, forehead, skin, etc. The identification features will change significantly, and the face recognition rate of the machine will also drop accordingly. With a photo of a 3-year-old child, the effect is not ideal."

"Gu Chen, this is already very good." Officer Wang felt that Gu Chen didn't need to be critical, so he said, "If we can narrow the scope down to a few hundred people, it will take a lot of time and energy to continue the investigation, but This is much better than searching without a goal, at least with a goal."

"I also think it's good." Lu Weiwei couldn't help wiping her mouth and said, "Once the scope is determined, it's only a matter of time before we find this abducted child. Even if we investigate one person a day, the truth will always come to light." .”

Hearing the encouragement from Police Officer Wang and Lu Weiwei, Gao Xu nodded excitedly and said with a smile: "To be honest, we are under a lot of pressure this time. The system jointly developed by Pengcheng Bureau and this high-tech enterprise , if it lands, it will require breakthroughs from our seven working groups."

"However, at present, we can only investigate step by step. At first we have visited five cities and investigated nearly 30 people, but the efficiency is not high. This time we come to Jiangnan City, I hope we can gain something. "

Liao Kai on the side also said: "Yes, although this new technology is not very mature at present, our country is already in the world's first echelon of this technology, and the application of this technology has already been able to By assisting the police, we have successfully narrowed down the search area for children who have been abducted for more than ten years, and we are no longer looking for a needle in a haystack.”

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

Gao Xu was stunned for a moment, and said with some frustration: "I have been checking in different cities for 44 days."

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

"Yes." Although Liao Kai was exhausted, he was still serious about his work: "We have been working continuously for 44 days, and many working groups have not achieved corresponding results."

"If in the next investigation, the longer our inspection time, the greater the pressure on our working groups and higher-level technical departments, so everyone is working hard and wants to be the first to get the results .”

"No wonder you look like you haven't slept well for many days." Lu Weiwei smiled and said, "I'll buy some more Red Bull for you later, you can sleep well tonight in the police dormitory of our Furong branch , Tomorrow we will arrange the docking work with you."

"Thank you so much."

"You're welcome."

After everyone finished their dinner, Gu Chen brought Gao Xu and Liao Kai to the police dormitory area.

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

"Although it's not as comfortable as a hotel, it has everything you need. If you need any help, you can call my number."

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

"Thank you so much, Gu Chen." Gao Xu also rubbed his bloodshot eyes, and said with a wry smile, "It's been 44 days since the two of us have had a good night's sleep. The first thing we do when we open our eyes every day is Start to check the personnel information within the scope, for fear of delaying time."

"Thank you for your efforts." Liao Kai also thanked the victim.

"What's the matter, everyone is a policeman and should help each other." After Gu Chen finished speaking, he said, "By the way, Gao Xu, can you show me that little girl's photo again?"

Gao Xu froze for a moment.

Gu Chen smiled and said: "That's it, about your work matchmaking, maybe Brother Wang will arrange it tomorrow, so I want to understand the relevant situation first, if you can show me the information of the trafficked girl, maybe it will be more helpful." it is good."

"Haha, so that's the case?" Gao Xu was also hesitant for a while because of Gu Chen's sudden concern, but after learning about the situation, he suddenly felt relieved.

"Okay, then you can take it over and have a look, and just return it to me tomorrow." Gao Xu glanced at Liao Kai beside him, and said with a smile: "Liao Kai and I have traveled a long distance, and we are really tired. We will wash up later. Take a shower and sleep."

"Then I wish you all a sweet dream." After taking the materials and photos given by Gao Xu, Gu Chen helped them close the door and went back to his dormitory.

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

So the four-person dormitory has also become a three-person dormitory, and now only Ding Liang and Huang Zunlong still live here.

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

Usually at this time, the two of them would go outside for a walk, but today it was raining heavily, so everyone naturally huddled in the dormitory obediently.

"Gu Chen, what are you holding in your hand?" Huang Zunlong found the file in Gu Chen's hand at a glance.

"Would you like to read the materials of trafficked children?" Gu Chen asked.

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

"It's fine if you can solve the case, so why bother?" Gu Chen casually complained, threw the documents on the desk, and then sat on the chair to read them.

Gu Chen first took out the photo of the little girl when she was two or three years old, blinking her eyes twice quickly.

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

In the visual interface at this time, the left side shows scan, and the right side shows save.

Gu Chen directly clicked Scan.

Soon, the photo of the little girl was covered by a green grid in the vision, a line with lightning, constantly undulating up and down.

"Ding!"

As the scan ended, a crisp bell sounded in my mind.

Gu Chen conducted an on-site audit for the first time based on his face recognition skills.

Soon, another photo appeared next to the original photo, and it showed that the time was four years old.

"Is it really possible to operate like this?" Gu Chen was a little overjoyed, this skill is much faster than expected.

Through the locking of the little girl's face shape, eyes, mouth corners, forehead, skin and other identification features, although it has changed a year later, the basic points have not changed.

"Perhaps the direction of cooperation between the police in Pengcheng and high-tech companies is also based on this calculation? But the face recognition rate of the machine will decrease as the age of the abducted person increases. With a photo of a 3-year-old child, the effect is far from ideal."

Gu Chen turned his head to look at Ding Liang and Huang Zunlong behind him.

Neither of them noticed their abnormality, so Gu Chen once again looked at the second photo, which was the calculation photo of the little girl when she was four years old.

Afterwards, Gu Chen used face recognition skills again to scan the second photo, and got the photo of the five-year-old girl.

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

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

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

If the photos provided by Gao Xu and Liao Kai are of a general appearance, then Gu Chen used his face recognition skills to scan and get a clear photo.

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 couldn't extract the photo, so he could only take out a pen and paper from the drawer, and began to draw a sketch on the straw paper using the appearance of the photo in his mind.

Half an hour has passed...

Gu Chen wiped the sweat from his forehead, feeling that the portrait in his hand was even more lifelike.

Compared with the photo simulated by the machine, the appearance given by Gu Chen is obviously more three-dimensional.

"My God, when did Gu Chen become a great painter?" Ding Liang got behind him at some point, and was shocked when he saw the sketch drawn by Gu Chen.

Huang Zunlong also came to Gu Chen's side, picked up the sketch, and compared it with the photo calculated by the machine, he couldn't help but doubt: "Hey, Gu Chen, although your drawing is very good, it is not the same as the characters in this photo." like?"

"I didn't say to draw according to the photo." Gu Chen nailed the sketch to the target on the wall with darts, and then nailed the photo calculated by the machine next to the sketch.

"Ding Liang, Huang Zunlong, you two can help me take a look and give some advice." Gu Chen said.

Ding Liang crossed his arms and pondered for a long time, and said, "Your sketches are more vivid and real, but this photo..."

After hesitating for a few seconds, Ding Liang raised his head and said, "This photo makes me feel a bit like a simulated character."

Gu Chen gave an "en" without agreeing or disapproving.

Ding Liang actually made a point. That’s right. Although the new face recognition algorithm simulated by the machine is reliable, it has large errors.

After letting the artificial intelligence deeply learn the growth laws of the five sense organs, the face model photos established can only be a relative existence.

Therefore, if you use this cross-age calculation to filter photos, you will get a lot of data.

This is why the workload of Gao Xu and Liao Kai is so heavy. The fundamental reason is that the calculation method of this machine will gradually increase with the age of children, and the identification features such as face shape, eyes, mouth corners, forehead, and skin will appear. obvious changes.

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

Gu Chen looked at this portrait of his plain cat, and couldn't help but fell into deep thought: "If the recognition rate of machine calculation will drop, then I will use my own face recognition skills to screen one by one. Whether this photo can represent it is What will that three-year-old girl look like ten years from now?"

Although not very sure, Gu Chen has already mastered a part of the use of face recognition skills.

Now that he encounters this kind of photos with certain characteristics of difficulty and a certain age span, he no longer makes judgments based only on the existing information.

Therefore, Gu Chen repacked the portrait he had sketched in the file bag, and prepared to take it to the office tomorrow, and use Gao Xu's computer to compare it to see if the character he sketched really exists in Gao Xu's computer file middle.

(End of this chapter)