Since Lu Chuan obtained the advanced fingerprint identification and analysis skills, he actually didn't use this skill well.

After the murder of Song Kun was solved, Lu Chuan participated in Li Donglin's task force. In the past two months, most of the energy has been put on the side of the task force.

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

"Officer Lu?" Lu Chuan, who was scanning the fingerprint database of the case, was awakened by the voice beside him.

"Hello Officer Lu, my name is Gao Wenxiang, and I am from the Criminal Police Brigade of the High-tech Zone." Lu Chuan nodded, and the criminal police brigade of the high-tech zone ...... Lu Chuan only knew the captain Yuan Shaokang, and Song Kun's apprentice Li Kai.

This Gao Wenxiang has never dealt with it.

"Old Song's case...... Thank you for your help. "Although the people who participated in the fingerprint battle knew that Lu Chuan was from 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, it's all what should be done." The two shook hands and knew each other.

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

"By the way, the fingerprints of our brigade last time were the fingerprints of the Goldman Sachs disappearance case, which I collected, but I couldn't do it in terms of identification and analysis, so I could only ask Director Liu for help." Lu Chuan nodded, a little abruptly, it turned out that in the case of Goldman Sachs' disappearance, the fingerprints on the electric car were collected by Gao Wenxiang.

Truth be told, the level of collection needs to be improved.

"It's the first time Officer Lu has participated in the fingerprint battle, right?" Gao Wenxiang glanced at Lu Chuan's computer screen and leaned over.

Lu Chuan nodded: "I only joined the work last year, and it is indeed the first time to participate in the fingerprint battle." Joined the job last year? Gao Wenxiang knew Lu Chuan, but he didn't know that Lu Chuan had only been working for more than half a year.

"That 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 will fight...... It's not like you're playing like that. "Huh? The two chatted for a while and got acquainted with each other a lot, Gao Wenxiang called himself his brother: "Brother Gao, what else is there to say?" ”

"It's not a word, it's just a little skill." Gao Wenxiang pointed to his screen, and then pointed to Lu Chuan's screen: "The cases in the backlog library are sorted by time. ”

"Cases before last year have appeared in fingerprint battles basically every year, but they have not been successful."

"Therefore, it is best for us to focus on this year's case, so that the probability of winning is much greater."

"And ......" Gao Wenxiang paused, and took out a pack of cigarettes from his trouser pocket: "Go out and say?" Liu Guodong obviously didn't popularize these tips for Lu Chuan, Lu Chuan nodded: "Go, smoke mine." As he spoke, he took out the Huazi in his bag, and Gao Wenxiang was stunned for a moment.

It's not easy for a criminal police officer who has just come to work now. It's already at the level of pumping Huazi? Silently seeing their white sand put it back, Gao Wenxiang and Lu Chuan got up and left the station.

Syllable! lit a Chinese cigarette with the prefix 3 to Gao Wenxiang, and the other party half-squinted his eyes, a little intoxicated.

"The taste of this Huazi is really good......" Lu Chuan lit one himself, but he didn't suck it in his hand.

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

"What else did my brother just say?"

"Oh, let's talk about that," Gao Wenxiang took another puff of his cigarette: "The fingerprint battle we organized, in fact, it is difficult to have a murder or other major cases to be solved, so in order to make the results look better, the city bureau will release some relatively simple theft, arson or other small cases every year." ”

"When you go back to compare, pay more attention to this aspect of the case, and it will be easy to succeed in the comparison." With a cigarette, the two returned to their workstations again.

Quiet conference room, only the whining of computer fans. All of them are in the groove. The most important thing in fingerprint battles is not how strong the fingerprint identification and analysis ability is.

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

Therefore, the most important thing for everyone is to choose the fingerprint for comparison. This is a rather interesting phenomenon.

There were a total of eighteen people who participated in the battle, except for Lu Chuan's computer screen, the other people's computer screens were browsing the cases that happened this year.

Moreover, everyone invariably focused on three arsons, four thefts, and two robberies.

Choosing the one with the clearest fingerprint in these cases is a top priority. Of course, there is no rush now.

Choosing fingerprints is not something that can be selected in a while. Even if you choose it, you still have to pre-process the fingerprint, which is even more time-consuming.

Although the city bureau will put some simple cases to prevent the fingerprint battle from having no results, it is definitely not a case that can be solved at a glance.

Difficulty, there is still some. Lu Chuan didn't care much about this. The advanced fingerprint identification analysis gave Lu Chuan great confidence.

Therefore, at the beginning, Lu Chuan didn't think about grabbing those simple cases with seventeen other colleagues. When Lu Chuan came up, he locked the fingerprints in the backlog of cases to the murder case.

Thirteen homicides, this is the number of homicides in this fingerprint battle of the Haizhou City Public Security Bureau. Of course, this does not mean that there are only 13 homicide cases in the history of Haizhou City, but there are cases with fingerprint and physical evidence, just 13 cases.

For the rest, there were no fingerprints at the scene. The first case selected by Lu Chuan was a murder case in the high-tech zone seven years ago.

Lu Chuan did not pay attention to the specific content of the case, and 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 ridge lines are twisted and folded.

Although the clarity is acceptable, it is difficult to identify the fingerprint because of the excessive force.

The fingerprints of the murder case, and it was a case seven years ago, was definitely investigated by the Haizhou Municipal Public Security Bureau for many rounds.

It is even very likely that experts from the provincial department have been invited to conduct an appraisal. It hasn't broken so far, so there are two possibilities.

One is that the information of the fingerprint owner is not in the fingerprint bank. Second, the pretreatment of fingerprints is not in place, and the identification and analysis are not successful.

"That's you!" Thirteen murders, 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 in the case.

As for how many can be successfully compared, it depends on the will of God. PS software is Lu Chuan's main offensive weapon this time.

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

However, this kind of software also has its own flaws, that is, the integration is too high, and the user has little room to play on his own.

Image processing is, to put it bluntly, a kind of data processing. Noise reduction, sharpening, increasing or decreasing contrast, sometimes Lu Chuan needs to set the parameters himself.

In this case, PS software is not as easy to use as some of the more open image processing software. Then, in the quiet conference room, there was a dense sound of keyboard tapping.

Quite a few people looked sideways. Gao Wenxiang also looked sideways at Lu Chuan, and saw a scene that he would never forget.