During working hours, Jiang Yuan went to the office area of the Economic Investigation Brigade.
Wei Zhenguo arrived in about time and met him at the door.
"It's strange that you came early." Wei Zhenguo said cheerfully.
He was quite willing to help Jiang Yuan. He even thought it was rare to be able to help Jiang Yuan, so he was extra active.
Jiang Yuan smiled like a student and said, "Leave a good impression on others."
"Actually, no need. Besides, we are just doing him a favor." Wei Zhenguo said before leading Jiang Yuan inside, smiling all the way and greeting everyone.
In the office area in the morning, police officers were coming and going. Everyone was staring at Wei Zhenguo, and from time to time someone would ask questions.
Fortunately, the economic investigation police officer came out to greet me, which saved at least two groups of questioning time.
"Let me introduce, this is Li Suigong, the deputy captain of our Economic Investigation No. 3 Squadron." Wei Zhenguo said, mocking himself to adjust the atmosphere: "Just like me."
Li Suigong smiled: "What else can you call me like deputy captain? Forensic Doctor Jiang doesn't need an introduction. I've heard his name for a long time..."
"Let's just watch the eucalyptus." Wei Zhenguo laughed twice, but also felt that it was not suitable for small talk.
Li Suigong then led the two of them into the office, and while turning on the computer, he said: "You should know the basic situation of Guzi. We have just made a record of the victim. Now we are waiting for the news from the Criminal Division Center in Changyang.
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"Do you use fingerprints to confirm your identity?" Jiang Yuan asked.
"It's generally not used because we can't find anyone." Li Suigong explained: "This kind of contact-based economic case is different from criminal cases, that is, the criminal suspect can be contacted in the early stage. It depends on what method is used to identify him.
identity of."
Jiang Yuan nodded as he listened. It was true. In criminal cases, we usually don't know who did it and we have to find someone to come out.
Economic cases are different. In fact, you know someone is doing it, but you just want to confirm someone's true identity.
"We usually identify people through DNA and photos. DNA is more accurate and faster. For photos, we use facial recognition and then use the portrait card to find the person directly."
When Li Suigong said this, he looked at Jiang Yuan and said: "Now the DNA and photos have been sent to Changyang City, but they are still stuck and have not been processed. We cannot continue here until they are processed."
When Jiang Yuan heard about photos and facial recognition, he immediately became energetic. Z asked: "How should you process your photos?"
"As long as it meets the requirements for facial recognition."
“What are the requirements for facial recognition?”
"It means clear facial features, like a mug shot, are the best. Of course, if the general conditions are not met, the matching rate will be lower. The clearer the facial features, the higher the matching rate."
"Where does it match?"
"It's mainly about face mounts." Li Suigong pointed out the window and said, "Just like vehicle mounts, many cities now, especially high-speed rail stations and airports, have face mounts. When the time comes, use our
It will be easier to find the suspect by comparing the photos in your hand with the photos taken by face mounts in various places."
In fact, it is a static version of face recognition.
It is not easy to identify the people inside when the crowd is moving.
But if you take a photo of everyone passing by and compare the photos with each other, wouldn't it be simple?
Facial recognition and portrait bayonet are such a simplified idea.
Jiang Yuan basically understood it and said, "Can you show me the photos you have here?"
Li Suigong hesitated for a moment and said, "Just take a look. This photo was also taken by your Criminal Division Squadron. They are all surveillance photos."
As he spoke, Li Suigong found a few photos from the computer folder.
Jiang Yuan looked at the photos on the screen. They were all photos taken by a high-definition camera. The image definition was quite good. If the human eye was used as the basis for discrimination, it would not be a problem to see the face clearly.
"Isn't this clear enough?" Jiang Yuan asked without understanding.
"Facial recognition mainly looks at the face. Moreover, if we do it clearly here, the probability of recognition will be higher. Otherwise, it will be thrown into the blacklist and there will be no news for a long time, and this clue will be useless.
"What Li Suigong said was very practical.
Jiang Yuan nodded slowly. The eucalyptus seeds were not big to begin with. If they were sent to other provinces and cities for storage, they could only wait statically. They would have to be identified by the system and confirmed manually before they would be reported here.
It's difficult for everyone in Momo Huhu.
If a false alarm does occur, you will be the only one to suffer.
Therefore, you need to do this first. The definition of your face is high enough, so it will be easy to compare.
Jiang Yuan thought of fingerprints from this.
Fingerprint comparison requires the suspect's fingerprints on the one hand, and the accuracy of the fingerprint collection on the other. The level of fingerprints collected in Ningtai County has never been high, and we really need to think about this aspect in the future.
Jiang Yuan's divergent thoughts stopped as soon as they dispersed, and his eyes focused on the picture in front of him again.
"You just said that the pictures were sent to Changyang City? Can you show me what the finished product they made looks like?" Jiang Yuan asked again.
He could actually see piles of folders with different names on hand, but it was obviously not good to do so without the owner's permission.
Li Suigong glanced at Wei Zhenguo with a wry smile, and then said: "Your request is still a set one. Okay. I happen to have an old criminal here, and the criminal was later on the news. I'll look for it for you."
He took the mouse again, picked it up, and released a new picture.
Sure enough, it's a headshot.
"Did the Provincial Department's Picture Investigation Team do this?" Jiang Yuan asked as he watched.
"Yes. Even if this is done very well, it is because the eucalyptus is relatively large. I specifically told the other party to strengthen it twice." Li Suigong sighed as he spoke.
Ningtai County does not have its own reconnaissance team, so it can only ask for help, and this part is often the most emotionally draining part.
Jiang Yuan nodded as he listened.
With comparison, he understood.
What picture detectives do is, to say the least, simple, which is to extract the suspect's headshot from the surveillance screen or photo and store it separately.
If the resolution of the avatar meets the requirements, this can be used directly. In most cases, this is obviously not the case.
Therefore, the second step of processing is to enhance the image, remove the noise points that should be removed, and repair the areas that can be repaired.
Jiang Yuan has also seen the level of picture scouts in the provincial department, which is why LV2 is dissatisfied.
As mentioned before, if you are really good at making images and developing face mounts, you will gain face and dignity.
"Let me do this picture." Jiang Yuan had already prepared to take over the job. He just wanted to see what the specific requirements were.
Li Suigong looked at Jiang Yuan and Wei Zhenguo with some suspicion.
Wei Zhenguo's face was calm and he said with a soothing expression: "Second-class merit."
"Okay, then how can I give you the photo?" Li Suigong stopped talking when faced with "second-class merit".
There are actually quite a few people with second-class merit among the criminal police. With the configuration of the Ningtai County Bureau, one can come around every year or two.
However, it is quite rare for people from the Criminal Science and Technology Squadron, or technicians, to get second-class merit.
Li Suigong wasn't sure where Jiang Yuan was strong, but since he dared to take over, he didn't mind copying and pasting it.
Jiang Yuan looked at the picture and said, "You put it on the intranet, and I'll do it directly on my mobile phone."
"On the phone?" Li Suigong was surprised.
"I'll use my mobile phone to operate the computer. Wait a minute." Jiang Yuan had installed the relevant software earlier.
But just to enhance the clarity of human faces, this requirement is indeed not high.
Ordinary people can actually operate it even after a few days of training.
For example, in the provincial department's picture scout team, not everyone can reach the level of LV2. What ordinary team members do is actually operating software and doing step-by-step work.
Jiang Yuan sat next to him and completed the image enhancement in a few minutes.
He didn't use any special methods, it was basically fully automated by software.
The retrieved image was put back into the intranet and opened on the computer. As expected, the existence of several levels was already clear.
"What you did... is really good." Li Suigong's eyes lit up when he saw it.
"Can this be sent over?" Jiang Yuan asked.
"Of course, the clarity is enough, quite enough." Li Suigong replied repeatedly, and sat down and said, "Wait a moment, I will send the picture to the blacklist library."
Jiang Yuan and Wei Zhenguo sat nearby and waited.
Li Suigong was worried that the two of them would be bored, so while doing things, he said: "The current blacklist includes high-risk personnel, special personnel, and those submitted by different units. It is quite complicated, but the efficiency is pretty good..."
"As long as the suspect passes the face checkpoint, will the police be alerted?" Jiang Yuan asked.
"That's pretty much what it means. Those who pass through the bayonet will be captured, and a reminder will be given when the comparison is made. Then it will be manually identified here, and then it can be submitted." Li Suigong said: "Generally, as long as the initial position is determined, it will be easier to find later.
Human.”
"That means we still need to get there later."
"Not necessarily. For example, if the face checkpoint at Changyang Airport calls the police, and then confirms that the person has boarded the plane, then ask the police at the destination to cooperate. Of course, we usually send people there ourselves." Li Suigong smiled.
Wei Zhenguo smiled understandingly, and the economic investigation brought back money.
Li Suigong finished it quickly, clapped his hands, and said: "Forensic Doctor Jiang, um, I wonder if you are still busy here."
"You're not busy, just say it." Jiang Yuan heard the string and knew what it meant.
"Well, I'm a little embarrassed, but I have a lot of pictures here. Can you help me deal with them?" Li Suigong is now a person who believes in "second-class merit".
Jiang Yuan agreed immediately and said: "If you want to process it in large quantities, I have to go back to the office to do it."
"No problem, no problem. Should I upload it to the intranet now?"
"Okay." Jiang Yuan agreed and returned with Wei Zhenguo.
Li Suigong diligently sent the two of them out and said, "I will inform you if there is any news about Eucalyptus!"
