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

Chapter 136
Ever since Lu Chuan acquired advanced fingerprint identification and analysis skills, he hadn't actually used this skill well.

After Song Kun's murder case was solved, Lu Chuan joined Li Donglin's task force.

In the past two months, most of the energy has been put on the task force.

This time, I can calm down and do a good job of fingerprint identification and analysis, which will definitely play a big role.

"Officer Lu?"

Lu Chuan, who was scanning the fingerprint database of accumulated cases, was awakened by a voice beside him.

"Hello, Officer Lu, my name is Gao Wenxiang, and I'm from the Criminal Police Brigade of the High-tech Zone."

Lu Chuan nodded, High-tech Zone Criminal Police Brigade...

Lu Chuan only knew the captain Yuan Shaokang, and Song Kun's apprentice Li Kai.

This Gao Wenxiang has never dealt with him.

"Lao Song's case...Thank you for your help."

Although everyone who participated in the fingerprint battle knew that Lu Chuan belonged to the Criminal Investigation Detachment, few people knew about Lu Chuan's specific deeds.

But Gao Wenxiang is different. Song Kun himself is a member of the Criminal Police Brigade of the High-tech Zone.

The murder case of Song Kun was solved thanks to Lu Chuan.

"You're welcome, everything should be done."

The two shook hands, and they knew each other.

"Hey...Old Song..."

Gao Wenxiang obviously has a good relationship with Song Kun, and regrets Song Kun's sacrifice.

"By the way, the fingerprints of our brigade last time were the fingerprints of the disappearance case of Goldman Sachs. I took them, but the identification analysis is not good, so I can only ask Director Liu for help."

Lu Chuan nodded, a little stunned. It turned out that Gao Wenxiang collected the fingerprints on the electric car in the Goldman Sachs disappearance case.

To be honest, the level of collection needs to be improved.

"Is this the first time Police Officer Lu participated in the fingerprint battle?"

Gao Wenxiang glanced at Lu Chuan's computer screen and moved closer.

Lu Chuan nodded: "I only started working last year, and it is indeed my first time participating in the fingerprint competition.

Worked last year?

Gao Wenxiang knew Lu Chuan, but he didn't know that Lu Chuan had only started working for more than half a year.

"Then Police Officer Lu is really young and promising!"

Lu Chuan smiled and did not explain.

Gao Wenxiang's social skills obviously exceeded Lu Chuan's expectations.

"Brother told you, this fingerprint battle...is not the way you play it."

Ok?
The two chatted for a while and became acquainted a lot. Gao Wenxiang called himself an elder brother: "Brother Gao, what else can I say?"

"It's not a saying, it's just a little skill."

Gao Wenxiang pointed to his own screen, then pointed to Lu Chuan's screen: "The cases in the accumulated case database are sorted by time."

"The cases before last year basically appeared in the fingerprint battle every year, but the comparison has never been successful."

"So, we'd better focus on this year's case, which will have a much higher probability of winning."

"and……"

Gao Wenxiang paused, and took out a pack of cigarettes from his trouser pocket: "Go out and talk?"

Liu Guodong obviously didn't popularize these tricks to Lu Chuan, Lu Chuan nodded: "Go, pump me."

As he said that, he took out Huazi from his bag, and Gao Wenxiang stared at it in a daze.

It's not easy for a criminal police officer who just started work now.

Has it reached the level of drawing Huazi?

Silently watching their own white sand put back, Gao Wenxiang and Lu Chuan got up and left the work station.

Snapped!
Lighting a Chinese cigarette with the prefix 3 on Gao Wenxiang, the other party half-closed his eyes, a little intoxicated.

"This Huazi tastes really good..."

Lu Chuan lit one himself, but he didn't smoke it while holding it in his hand.

For Lu Chuan, the social function of cigarettes is obviously greater than the demand for nicotine.

"What else did my brother just say?"

"Oh, let's talk about that." Gao Wenxiang took another puff of his cigarette: "In fact, it is very difficult for us to organize a fingerprint battle to solve any homicide or other major backlog cases, so in order to make the results look better, the city bureau will release some comparisons every year." Simple theft, arson or other small cases."

"When you go back to compare later, pay more attention to the cases in this area, and the comparison will be successful."

After a cigarette, the two returned to their workstations again.

It was a quiet conference room, only the whine of the computer fans.

Everyone is in the mood.

In the fingerprint battle, the most important thing is not how strong the fingerprint identification and analysis ability is.

Because everyone's level is about the same, in the absence of Liu Guodong, whoever succeeds in the comparison first has an element of luck.

Therefore, for everyone, the most important thing is to select the fingerprints for comparison.

Here comes a rather interesting phenomenon.

A total of 18 people participated in the battle. Except for Lu Chuan's computer screen, all the cases on the other people's computer screens were viewed this year.

Moreover, everyone unanimously focused on three cases of arson, four cases of theft, and two cases of robbery.

In these cases, it is imperative to choose the one with the clearest fingerprints.

Of course, everyone is not in a hurry now.

Choosing fingerprints is not something that can be done in a short while.

Even if it is selected, the fingerprint must be preprocessed, which is even more time-consuming.

Although the Municipal Bureau will release some simple cases to prevent the fingerprint battle from failing, it is definitely not a case that can be settled at a glance.

There is still difficulty.

Lu Chuan didn't care much about this.

Advanced fingerprint analysis gave Lu Chuan great confidence.

Therefore, at the beginning, Lu Chuan didn't think about grabbing those few simple cases with the other seventeen colleagues.

As soon as Lu Chuan came up, he locked the fingerprints in the case library to the murder case.

Thirteen homicides, this is the total number of homicides in the fingerprint battle of the Haizhou Public Security Bureau.

Of course, this does not mean that there are only thirteen homicide cases in Haizhou City's history, but that there are only thirteen cases with fingerprint evidence.

Others didn't even have fingerprints at the scene.

The first case selected by Lu Chuan was seven years ago, a murder case in the high-tech zone.

Lu Chuan did not pay attention to the specific content of the case. His attention was on the fingerprints collected at the scene.

The fingerprint is only half the size of a normal fingerprint, and the edges are badly worn, and the ridges are twisted and folded.

Although the clarity is acceptable, due to excessive force, the fingerprints are severely distorted and deformed, making it difficult to identify.

The fingerprints of the murder case, and it was a case seven years ago, must have gone through multiple rounds of investigations by the Haizhou Public Security Bureau.

It is even very likely that experts from the provincial department have been invited to conduct an appraisal.

If it has not been broken so far, then there are two possibilities.

One is that the information of the fingerprint owner is not in the fingerprint database.

The second is that the preprocessing of fingerprints is not in place, and the identification analysis is unsuccessful.

"It's you!"

Thirteen homicides, this is the goal that Lu Chuan set for himself in this fingerprint battle.

Of course, Lu Chuan's goal is not to solve all thirteen cases, but to identify and analyze all the fingerprints involved.

As for how many can be successfully compared, it depends on God's will.

PS software is Lu Chuan's main offensive weapon this time.

Compared with other image processing software on the market, PS is relatively powerful, especially in the layered processing of images, which has great advantages.

However, this kind of software also has its own defects, that is, the integration is too high, and there is not much room for users to play by themselves.

Image processing, to put it bluntly, is a kind of data processing.

For noise reduction, sharpening, increasing or reducing contrast, sometimes Lu Chuan needs to set parameters by himself.

At this time, PS software is not as easy to use as some more open image processing software.

Then, in the quiet conference room, there was the sound of intensive keyboard tapping.

Many people looked sideways.

Gao Wenxiang also looked sideways at Lu Chuan, only to see a scene he will never forget.

(End of this chapter)