Attending ex-girlfriend's wedding, arresting the groom's officer on the spot

Chapter 137 A Theft Case
The development of criminal investigation technology cannot be said to be fast, but it is not slow either.

Take fingerprint identification and analysis as an example. More than ten years ago, criminal policemen used horseshoe mirrors to identify fingerprints and compared thousands of fingerprint cards.

At that time, no one engaged in fingerprint identification and analysis was not short-sighted.

But even now, the ancient equipment such as the horseshoe mirror has not been completely abandoned.

Just like a charming young woman and a green girl, there is always someone who likes each other.

Now, although fingerprint cards are no longer used to collect fingerprints, many people still hold a horseshoe mirror in front of the computer screen when comparing fingerprints.

In this meeting room, there are two older combatants who are still using horseshoe mirrors.

Most of the other people use the image processing software that comes with the system to pre-process the fingerprints such as enlargement and distortion, and then put them in the system for comparison.

But either way, either use a horseshoe mirror, or use a mouse.

There is no one who uses the keyboard like Lu Chuan.

"Lu Chuan, you... a hacker?"

Gao Wenxiang thought to himself that he was also well-informed.

He has seen someone who used a horseshoe mirror to shed tears on the screen.

Print out the fingerprints, and compare the ridges one by one, he has also seen it.

But what is Lu Chuan doing?
The images on the computer screen switched crazily, and streams of data flowed in a corner of the screen like something in The Matrix.

Is fingerprint identification already at this level now?

Lu Chuan is doing image-to-number transformation, parsing fingerprint images into two-dimensional numbers, and then enhancing the impact through mathematical transformation.

"This one, just change it, and it will be fine soon."

Lu Chuan did not explain in detail.

Before he acquired advanced fingerprint identification and analysis skills, as a current surveyor with a professional background, he couldn't understand his current operating methods.

Let alone Gao Wenxiang, who explained to the army that he was transferred back from another job, and only had a college degree.

When the two were smoking just now, Gao Wenxiang shared his police experience in detail.

Xu is that older people like to share their wasted life.

When he was surveying the office, Yang Sen Laobai liked to talk about his great achievements in the past.

Fortunately, Lu Chuan is a qualified listener.

This is also the reason why Lu Chuan is more popular, because he can control his tongue and don't talk too much.

In this office, Lu Chuan, as the only criminal police officer of the criminal investigation detachment, has a different status after all.

Except for the two technical policemen from the Technical Appraisal Center, other people have to be asked to go to the head of the detachment frequently.

Therefore, even though Lu Chuan's keyboard tapping sound was a bit noisy, everyone didn't pay much attention to it.

When I was in my unit, the voices of everyone chatting were much louder than this.

Soon, everyone's attention shifted to their computer screens again.

Only Gao Wenxiang glanced at Lu Chuan's computer screen when he was free, enjoying the visual sense of The Matrix.

Ding Dong!

The crisp prompt sound woke up the detectives immersed in their fingerprints.

It was Lu Chuan's first time participating in the fingerprint battle of the Municipal Bureau, and he didn't quite understand what the ding dong sound meant: "Brother Gao, what's wrong?"

Gao Wenxiang looked at a policeman who had just stood up and stretched himself, and clicked his tongue twice: "Someone just successfully compared the fingerprints."

Gao Wenxiang pointed to the third seat on the opposite side, the policeman stood up and stretched: "Sun Hao from the Technical Appraisal Center, in terms of technology alone, is a little worse than Director Liu Guodong, and the first fingerprint fell into his hands. "

Lu Chuan looked up and saw that Sun Hao was about the same age as Liu Guodong, a middle-aged man with a fat figure and a kind smile on his face.

"Congratulations, it has to be Director Sun."

"That's right, it's only been less than an hour?"

Many colleagues gave applause and congratulations in time.

The police station and criminal police brigade below basically hand over technical problems that they cannot solve by themselves to two places.

One is the investigation office of the criminal investigation detachment, and the other is the technical appraisal center of the Municipal Bureau.

In terms of workload, the Technology Appraisal Center receives more work from below.

After all, the Criminal Investigation Detachment still has its own cases, and the Technical Appraisal Center specializes in technical support.

Sun Hao waved his hands, and his expression was not proud: "It's just a small case, let's take the lead first, let's continue."

The sound of ding dong is the sound of successful fingerprint identification and analysis specially set up in the meeting room during the fingerprint battle.

At the same time, a battle results leaderboard will appear in the lower right corner of everyone's computer screen.

"You click on this, and you can see the fingerprints compared by Director Sun."

Following Gao Wenxiang's instructions, Lu Chuan clicked on the prompt box in the lower right corner, and a leaderboard appeared.

Sun Hao's name is ranked first, followed by a red "1".

Others, including Lu Chuan, are all black "0".

"That 1 can be clicked on, and you can see the status of the fingerprint comparison case."

Lu Chuan clicked on it as he said, it was a battery car theft case.

Sun Hao was right, it was indeed a small case.

"Brother Gao, our fingerprints are comparable...how many fingerprints can you compare successfully?"

"It's only three or five. Most of the cases are this year's cases. Occasionally, there are also previous cases, but the number is not many. Sometimes there is no one in two or three consecutive years."

"What about the murder?"

"Murder case?"

Gao Wenxiang smiled: "The fingerprint battle organized by the provincial department may not be able to beat the murder case, our city bureau..."

Gao Wenxiang's smile told Lu Chuan the answer.

In history, there has never been a murder case.

Lu Chuan nodded and continued to process the layers of the selected fingerprints.

The fingerprint identification and analysis of murder cases is really not easy.

For nearly an hour, Lu Chuan hadn't finished the fingerprint preprocessing.

But it's coming soon, Lu Chuan estimated that it will be done in half an hour.

As time goes by, everyone's work is getting better and better.

The fingerprint battle highlights a centralized office atmosphere.

In addition, this is also an opportunity for all criminal policemen in the Haizhou Public Security Bureau who are proficient in fingerprint identification to exchange skills and connect with each other.

"Lu Chuan, take two breaths?"

After sitting for nearly two hours, Gao Wenxiang felt a little sore in his back.

Elderly men have no choice but to have a sore back or bifurcations in urine, which is always a little bit powerless.

Coincidentally, Lu Chuan also completed the preprocessing of fingerprints at this moment.

Feature point labeling and data calculation have also been completed.

The rest is to put the data in the system and run it.

"Okay, smoke one."

Picking up the soft Zhonghua beside the table, Lu Chuan hit the enter key.

The system starts to compare automatically.

In the smoking area, besides Lu Chuan and Gao Wenxiang, there were four or five people.

After working for two hours, the smoker's cravings are almost committed.

"Come on, let me introduce to you, the leader of the detachment, Lu Chuan, Director Liu's favorite student."

Gao Wenxiang was obviously an old man, and most of the people who participated in this battle knew each other.

For the criminal investigation detachment, everyone gave due respect.

They all greeted each other.

Two others passed cigarettes.

Lu Chuan hurriedly opened Ruan Zhonghua: "Pick this, smoke this."

The smoking crowd took the soft Zhonghua handed over by Lu Chuan in surprise, but didn't say anything.

Just thank you, and put out the original Hongmei, Honghe, and the highest priced Ziyun.

Smoking is the best way for men to socialize. This is a famous saying taught to Lu Chuan by Lu Chuan's father.

Sure enough, everyone became familiar with the effort of a cigarette.

"Xiao Lu, we have a case in our brigade. It's with the team leader Ren Qiang. If you take the time to see if you can help me, how's it going?"

The person who spoke was Sun Miao, a member of the Criminal Police Brigade of the High-speed Railway New District.

Lu Chuan nodded, Ren Qiang was familiar with him, so it would be no problem to ask about the situation.

"Is Team Leader Sun Jun familiar with you?"

Sun Jun... Lu Chuan nodded, it's okay.

"Where is Wang Changjiang's forensic doctor? I have a toxicology test here, and there is a queue at the Technical Appraisal Center..."

This relationship and pattern are opened.

After two cigarettes, Lu Chuan's full pack of Huazi was half empty, and everyone returned to the conference room.

Then, I saw everyone standing up and paying attention to everyone who entered the door.

(End of this chapter)