The development of criminal investigation technology cannot be said to be fast, but it is not slow either. Take fingerprint identification analysis as an example. More than ten years ago, criminal policemen still used horseshoe mirrors to identify fingerprints and compared them with thousands of fingerprint cards.
At that time, no one doing fingerprint identification analysis was short-sighted. But even now, the ancient equipment of horse hoof mirror has not been completely abandoned.
Just like the charming young woman and the green girl, there are always people who like each other. Nowadays, although fingerprint cards are no longer used to collect fingerprints, many people still hold a horse hoof mirror in front of the computer screen when comparing fingerprints.
In this conference room, there are two older combatants who are still using horseshoe mirrors. Most other people use the image processing software that comes with the system to amplify and distort the fingerprints and then put them into the system for comparison.
But either way, either use a hominisoscope or a mouse. There is really no one who uses a keyboard like Lu Chuan.
"Lu Chuan, you...hacker?" Gao Wenxiang thought that he was well-informed. He has seen people crying on the screen while using a hoof mirror.
He has also seen print out fingerprints and compare the ridges one by one. But what is Lu Chuan doing?
The images on the computer screen were switching wildly, and data streams were flowing in the corner of the screen like something from The Matrix.
Is fingerprint identification now at this level? Lu Chuan is doing image-to-number transformation, analyzing the fingerprint image into two-dimensional numbers, and then enhancing the impact through mathematical transformation.
"Well, it's just a change. It'll be fine soon." Lu Chuan did not explain in detail. Before he acquired the advanced fingerprint identification and analysis skills, as a current surveyor with a professional background, he could not understand his current operating methods.
Not to mention explaining to Gao Wenxiang, who only had a college degree when he returned from the army. While the two were smoking just now, Gao Wenxiang shared his police experience in detail.
Perhaps older people like to share their wasted lives. When we were surveying the office, Mr. Yang Sen 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 not 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 at the Technical Appraisal Center, others often have to call on the detachment.
Therefore, even though Lu Chuan's keyboard typing sounds were a bit noisy, no one paid special attention to it. When I was in my own unit, everyone was chatting much louder than this.
Soon, everyone's attention shifted to their computer screens again. Only Gao Wenxiang would glance at Lu Chuan's computer screen when he had nothing to do and enjoy the sense of seeing the Matrix.
Ding dong! The crisp sound alerted the detectives who were immersed in fingerprints. It was Lu Chuan's first time participating in the city bureau's fingerprint battle. 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, and tsked his tongue. Two voices: "Someone just successfully compared fingerprints." Gao Wenxiang pointed to the policeman who stood up and stretched in the third seat opposite: "Sun Hao from the Technical Identification Center, in terms of technology alone, is one step behind Supervisor Liu Guodong. Little by little, this first fingerprint fell into his hand." Lu Chuan looked up and saw that Sun Hao was about the same age as Liu Guodong, a middle-aged man with a somewhat stout 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, right?" Many colleagues promptly gave applause and congratulations. Technical problems that cannot be solved by the police station and criminal police brigade below are basically turned over to two places.
One is the current investigation office of the Criminal Investigation Detachment, and the other is the technical appraisal center of the Municipal Bureau. In terms of workload, the Technical Appraisal Center accepts more work from below.
After all, the criminal investigation detachment still has its own cases, and the technical appraisal center specializes in providing technical support.
Sun Hao waved his hands, his expression not showing any pride: "It's just a small case, let's take the lead, let's continue." The ding-dong sound was the successful fingerprint identification and analysis sound specially set up in the conference room during the fingerprint battle.
At the same time, a ranking list of results will appear in the lower right corner of everyone's computer screen.
"If you click on this, you can see the fingerprints compared by Manager Sun." Lu Chuan followed Gao Wenxiang's instructions and clicked on the prompt box in the lower right corner, and a ranking list appeared.
Sun Hao's name is listed first, followed by a red
"1". Everyone else, including Lu Chuan, is black
"0".
"You can click on that 1, and you can see the status of the fingerprint comparison case." Lu Chuan clicked on it, and 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 successfully compare?"
"Only three or five. Most of the cases are from this year. Occasionally there are cases from the past, but the number is not large. Sometimes we don't come across one for two or three years in a row."
"What about the murder?"
"Homicide?" Gao Wenxiang smiled: "The fingerprint battle organized by the provincial department may not be able to match the murder case. Our city bureau's..." Gao Wenxiang's smile told Lu Chuan the answer.
In history, there has never been a murder case. Lu Chuan nodded and continued layer processing on the selected fingerprints.
Fingerprint identification analysis in murder cases is indeed not easy. For nearly an hour, Lu Chuan had not completed the fingerprint preprocessing work.
But it's fast. Lu Chuan estimates that it will be done in half an hour. Time is passing, and everyone's work is getting better.
What stands out in Fingerprint Battle is a centralized office atmosphere. In addition, this is also an opportunity for all criminal police officers from the Haizhou City Public Security Bureau who are proficient in fingerprint identification to exchange skills and connect emotionally.
"Lu Chuan, take a couple of cigarettes to get some air?" After sitting for nearly two hours, Gao Wenxiang felt a little sore in his back. Older men have no choice but to suffer from back pain or bifurcated urination, and are always a little unable to do what they do.
It just so happened that Lu Chuan also completed the preprocessing of fingerprints at this moment. Feature point marking and data calculation have also been completed.
The rest is to put the data into the system and run it.
"Okay, smoke one." Lu Chuan picked up the soft Chinese from the table and hit the enter key. The system starts automatic comparison.
In the smoking area, besides Lu Chuan and Gao Wenxiang, there were four or five other people. After working for two hours, the smoker almost becomes addicted to cigarettes.
"Come on, let me introduce to you, the leader of the detachment, Lu Chuan, Director Liu's favorite disciple." Gao Wenxiang is obviously an old man, and most of the people participating in this battle know him.
Everyone gave due respect to the people in the criminal investigation detachment. Say hello one after another. Two others passed cigarettes.
Lu Chuan quickly opened the soft Chinese: "Smoke this, smoke this." The smokers were a little surprised and took the soft Chinese handed over by Lu Chuan without saying anything.
Just giving thanks extinguished the original red plums, red rivers and the most expensive purple clouds. Smoking is the best way for a man to socialize. This is a famous saying taught to Lu Chuan by his father.
Sure enough, within one cigarette, everyone became familiar with each other.
"Xiao Lu, our brigade has a case. I'm here with Team Leader Ren Qiang. Can you take the time to see if you can help me ask how it's going?" The person who spoke was Sun Miao from the Criminal Police Brigade of the High Speed Rail New District.
Lu Chuan nodded. He was familiar with Ren Qiang, so it would be no problem to help ask about the situation.
"Are you familiar with Team Leader Sun Jun?" Sun Jun... Lu Chuan nodded, that's okay.
"Where's the forensic doctor Wang Changjiang? I have a toxicology test here, and there's a queue at the technical identification center..." This relationship and pattern opened up.
After two cigarettes, Lu Chuan's full pack of Huazi was half empty, and everyone returned to the conference room.
Then, everyone stood up and paid attention to everyone who entered.
