civil forensic

Chapter 142 Storage
The next day.

The sky is high and the air is crisp.

Feed big and strong.

Walk the dog.

During working hours, Jiang Yuan went to the office area of ​​the Economic Investigation Brigade.

Wei Zhenguo also arrived almost in time, and happened to meet him at the door.

"It's strange that you came early." Wei Zhenguo said cheerfully.

He is quite willing to help Jiang Yuan.He even felt that it was rare to be able to help Jiang Yuan, so he was extra positive.

Jiang Yuan smiled like a student, and said, "Leave a good impression on others."

"Actually, it's not necessary. Besides, we're helping him." Wei Zhenguo said, and brought Jiang Yuan into the room, smiling all the way and greeting everyone.

In the office area in the morning, there were police officers coming and going, all of them staring at Wei Zhenguo, and people would ask questions from time to time.

Fortunately, the police officer from the economic investigation came out to greet him, saving at least two rounds of questioning time.

"Let me introduce, this is Li Suigong. The deputy captain of our No. [-] Economic Investigation Squadron." Wei Zhenguo said with a self-mockery to adjust the atmosphere: "Same as me."

Li Suigong smiled: "What do you mean by the title of deputy captain. Forensic doctor Jiang doesn't need to be introduced, I've heard the name for a long time..."

"Let's look at the case directly." Wei Zhenguo laughed twice, and felt that it was not suitable for small talk.

Li Suigong led the two of them into the office, turned on the computer and said, "You should understand the basic situation of the case, and we just made a record for the victim, and now we are waiting for the criminal center in Changyang to reply. "

"Do you use fingerprints to identify yourself?" Jiang Yuan asked.

"Generally not. Because no one can be found." Li Suigong explained: "This contact-based economic case is different from a criminal case in that the criminal suspect can be contacted in the early stage. It depends on the method used to confirm him. identity of."

Jiang Yuan listened and nodded, indeed, in criminal cases, it is usually unknown who did it, and it is necessary to find someone to come out.

Economic cases are different. In fact, it is to know that someone has done it, but to confirm the real identity of someone.

"We usually use DNA and photos to identify people. DNA is more accurate and faster. For photos, we can use facial recognition, and then through the portrait bayonet, we can often find people directly."

When Li Suigong said this, he looked at Jiang Yuan and said, "Now the DNA and photos have been sent to Changyang City, and they are still stuck. We will not be able to continue until they are processed."

When Jiang Yuan heard about the photos and facial recognition, he immediately regained his spirits. Z asked, "What do you do with your photos?"

"Just meet the requirements for facial recognition."

"What are the requirements for facial recognition?"

"It means that the facial features are clear, like a headshot. Of course, if the general conditions are not met, the matching rate will be lower. The clearer the matching rate, the higher the matching rate."

"Where does it match?"

"It's mainly facial checkpoints." Li Suigong pointed out the window and said, "Just like vehicle checkpoints, many cities now, especially high-speed rail stations and airports, have face checkpoints. When the time comes, take us It is easier to find the suspect by comparing the photos in your hands with the photos taken by face checkpoints in various places."

In fact, it is a static version of face recognition.

It is not easy to recognize the people inside when the crowd is moving.

But if you take pictures of everyone passing by, and then compare the photos with the photos, it's not easy.

Facial recognition and portrait bayonet are such a simplified idea.

Jiang Yuan basically understood, and said, "Can you show me the photos on your side?"

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."

With that said, Li Suigong found a few photos from the computer folder.

Jiang Yuan looked at the pictures on the screen. They were all photos taken by high-definition cameras, and the imaging clarity was quite good. If you use the human eye as a basis to distinguish, it is not a problem to see the face clearly.

"Is this clarity not enough?" Jiang Yuan asked without understanding.

"Facial recognition mainly looks at the face. Moreover, if we do it more clearly, the probability of recognition will be higher. Otherwise, it will be thrown into the blacklist library, and there will be no news for a long time, and this clue will be yellow. What Li Suigong said was very practical.

Jiang Yuan nodded slowly. The case was not big in the first place, and it had to wait statically when it was sent to other provinces and cities for storage.It will be reported here only after the system recognizes it and manually confirms it.

Vague, difficult for everyone.

If a false alarm is really going to happen, the one who is tired is still on his own side.

Therefore, we must do a good job here.The definition of one's own face is high enough, so it is easy to compare.

Jiang Yuan thought of fingerprints from this.

For fingerprint comparison, one side is the fingerprint of the suspect, and the other side is the accuracy of fingerprint collection.The level of fingerprints collected in Ningtai County has always been low, and we really need to think about it 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 all sent to Changyang City? What kind of finished product did they make? Can you show me?" Jiang Yuan asked again.

He can actually see piles of folders with different names at hand, but without the owner's permission, it is obviously not easy to order.

Li Suigong glanced at Wei Zhenguo with a wry smile, and said again: "Your request is still a routine. All right. I happen to have a previous case here, and the criminal was also in the news later. Let me find it for you."

He took the mouse back, picked it up, and released a new picture.

It was indeed a headshot.

"Did the graphic investigation team of the provincial department do it?" Jiang Yuan asked while watching.

"Yes. Even if this is done well, it's still a relatively big case. I told the other party specifically and strengthened it a second time." Li Suigong said with a sigh.

Ningtai County doesn't have a map investigation team, so they can only ask for help, and this part is often the place that consumes the most emotions.

Jiang Yuan listened and nodded.

With the comparison, he also understood.

What the picture detectives do is simple and simple, that is, to extract the head portraits of the suspects in the surveillance screen or in the photos, and store them separately.

If the resolution of the avatar and so on meet the requirements, this can be used directly.In most cases, obviously not.

Therefore, the second step of processing is to enhance the image, de-noise and de-noise, and repair where it can be repaired.

Jiang Yuan has also seen the level of the provincial department's graphic investigation, that is, LV2 is dissatisfied.

As I said before, making images with a real level, and doing face mount development, are both face and face.

"Let me make this picture." Jiang Yuan had already prepared to take over the job, just to see what the specific requirements were like.

Li Suigong looked suspiciously at Jiang Yuan, then at Wei Zhenguo.

Wei Zhenguo's face was calm, and he said with a soothing expression: "Second-class merit."

"Okay, then how do I give you the photo?" Li Suigong didn't hesitate to face the "second-class work".

There are actually quite a few people with second-class merit among the criminal police. With the configuration of the Ningtai County Bureau, one of them can be rotated in about a year or two.

However, it is quite rare for 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 the phone."

"On the phone?" Li Suigong was surprised.

"I use my mobile phone to operate the computer, wait a moment." Jiang Yuan had already installed the relevant software earlier.

And just to enhance the clarity of the face, this requirement is really not high.

Ordinary people can actually operate it after a few days of training.

For example, in the graphic investigation brigade of the provincial department, not everyone can reach the level of LV2. What ordinary team members do is actually to operate software and work step by step.

Jiang Yuan sat on the side, and within a few minutes, the image enhancement was completed.

He didn't use any special method, basically the software did it fully automatically.

The retrieved images were put back into the intranet and opened on the computer, and indeed, the existence of several layers was clear.

"What you did...you can really do it." Li Suigong's eyes lit up.

"Can this be delivered?" Jiang Yuan asked.

"Of course, the clarity is enough, quite enough." Li Suigong replied repeatedly, and sat down and said: "Wait a minute, I will send the picture to the blacklist library."

Jiang Yuan and Wei Zhenguo sat beside them and waited.

Li Suigong was worried that the two of them would be bored, so while doing things, he said: "In the current blacklist database, there are high-risk personnel, special personnel, and those handed over from different units. It is also quite complicated, but the efficiency is not bad..."

"Will the suspect warn the police as long as he passes the face checkpoint?" Jiang Yuan asked.

"It's almost the same. Those who pass the bayonet will take pictures, and when they are compared, they will be reminded, and then they will be manually identified here, and then they can be submitted." Li Suigong said: "Generally, as long as the initial position is determined, it is easier to find later. Human."

"That is, there is still a need to go in the future."

"Not necessarily. For example, if the face checkpoint at Changyang's airport calls the police, and then confirms that the person has boarded the plane, then please cooperate with the police at the destination. Of course, we usually send people there by ourselves." Li Suigong smiled.

Wei Zhenguo smiled understandingly, economic investigation, all that was caught was money.

Li Suigong got it done quickly, clapped his hands, and said, "Jiang Forensic Doctor, that, I don't know if you are still busy here."

"Not busy, just tell me." Jiang Yuan knew the elegant meaning after hearing the strings.

"Well, I'm a little embarrassed, but I still have a lot of pictures here, can you please help me deal with it?" Li Suigong is now a person who believes in "second-class merit".

Jiang Yuan agreed without hesitation, and only said: "If it is processed in large batches, I have to go back to the office to do it."

"No problem, no problem. Shall I upload it to the intranet now?"

"Okay." Jiang Yuan agreed, and returned with Wei Zhenguo.

Li Suigong escorted the two of them out graciously, and said: "If there is any news about the case, I will let you know!"

(End of this chapter)