Failed comparison!

It's still a failed comparison.

The four bright red characters seemed to be silently mocking Lu Chuan's efforts for an afternoon on the screen.

In the second fingerprint identification analysis, Lu Chuan adopted a different treatment method.

Segmentation distinguishes the entire fingerprint, which is a rare method of processing.

Dividing fingerprints requires very high fingerprint identification and analysis capabilities of the criminal police, especially when Lu Chuan divides a fingerprint into four parts, which requires Lu Chuan to have an overall analysis idea of the fingerprints of each part.

When dealing with any one of these parts, contact the fingerprints of the other three parts.

Generally speaking, the more experienced trace detection, when using the segmentation fingerprint method to identify and analyze the fingerprint, that is, to divide it into two parts.

In this way, the difficulty of processing is relatively low.

Like Lu Chuan, it is very rare to be divided into four parts.

However, even so, Lu Chuan, who has advanced fingerprint identification and analysis skills, is still confident that he can do a good job of analysis.

As a result, the comparison still failed.

Pulling out the fingerprints, Lu Chuan also put aside the fingerprints after the last pretreatment.

The same fingerprint, after two different identification and analysis methods, the final result is ......

Basically the same.

The fingerprints produced by the two completely different methods are the same, but the system comparison still fails.

This shows that it is more likely that the owner of the fingerprint is in the system and does not seem to have left a sample.

Scratching his head, Lu Chuan sighed.

That's how it works, especially fingerprint analysis.

In the past six months, Lu Chuan has identified thousands of fingerprints, to say the least.

Some of these fingerprints are very difficult to identify, and some are very low.

However, fingerprint identification analysis is not only related to the difficulty of fingerprint preprocessing analysis.

In some cases, the fingerprints are very clear, but there is no sample of the target suspect in the system, so they cannot be compared.

Just like the fingerprints identified by Lu Chuan in the fingerprint battle organized by the Haizhou City Public Security Bureau, the suspect's fingerprint sample was not entered in the system, and it was useless for anyone to identify it.

Rubbing his somewhat sour eyes, Lu Chuan decided to give up the fingerprint.

There is no way, there is no fingerprint sample of the suspect in the fingerprint bank, and if you continue, there will be no results.

Looking at the time, it was already past nine o'clock in the evening.

In the conference room, most of the people were still fighting.

"Are you working overtime today?"

Zhao Zhigao, who was beside Lu Chuan, patted Lu Chuan's shoulder: "The fingerprint just now was unsuccessful?"

Zhao Zhigao sat next to Lu Chuan, and he was very clear about what fingerprints Lu Chuan was doing.

Lu Chuan nodded helplessly: "I used two different methods, but I still didn't succeed."

"Often, let's go, let's rest first."

Lu Chuan nodded, and the two walked out of the conference room: "I'll get another fingerprint later, and I'll rest today."

"Okay, I'll get another one and I'll go back."

The two smoked two cigarettes and chatted about the criminal investigation detachment of the prefecture and city.

"The other party doesn't say anything, and the case is not easy to handle."

Although the murderer of the serial murder of the taxi driver was arrested, the interrogation of the other party was very unsmooth.

"Didn't you find a psychologist?"

Although Lu Chuan has never done pre-trial and has no experience in this area, he has heard of it.

Most of the murderers of serial cases have a psychology that is different from ordinary people.

This kind of person cannot be figured out and understood by ordinary people's reasoning.

When Lu Chuan was in college, he listened to the teacher explain some cases, and sometimes, to deal with this kind of criminal suspect, it is necessary for psychological experts to participate.

"I've heard that a psychiatrist has passed, let's see what happens tonight."

Back in the room, most of the experts were still there.

Lu Chuan clicked on the hero list that had just been updated on the computer screen, and his ranking had fallen from first to second.

Tian Rong hit another fingerprint, with a score of six points.

plus the original eighteen points, a total of twenty-four points, so that with a score four points higher than Lu Chuan, he became the first on the hero list.

The number of cases has also changed from four to five.

Lu Chuan's results have not changed, two cases, and twenty points.

Closing the hero list casually, Lu Chuan opened the fingerprint battle library and provoked the case, what he was aiming at was still a murder case!

This time, Lu Chuan chose a paste-bottom fingerprint.

The basic situation of the case, Lu Chuan probably glanced at a case in the Meishan mine ten years ago.

Meishan is the largest coal mine base in the province, which began to be developed 50 years ago and still has a large coal production.

Ten years ago, workers went down the mine and found a worker who had been missing for three days in a mine.

At that time, the police who handled the case found the murder weapon that killed the worker in the rubble deep in the mine, and collected half of the fingerprints from it.

Compared with the narrow fingerprints processed by Lu Chuan in the afternoon, the pre-processing of this fingerprint is impossible to rely purely on eyesight analysis.

The familiar sound of the keyboard sounded again, and the people around looked up and didn't care.

Lu Chuan typed on the keyboard all morning, and the regular clicking sound felt a little noisy at first, but he got used to it after listening to it.

What's more, it was this click that compared to two murders.

In the afternoon, Lu Chuan's side suddenly lost his voice, and everyone was still a little adapted.

Fingerprints need to be processed and analyzed mathematically.

The first is image layering, then image enhancement, and finally sharpening, denoise, and more.

More than an hour later, at nearly eleven o'clock, the pre-processing results of the pasted fingerprints finally ended.

Stretching his waist, Lu Chuan pulled the processed fingerprint into the fingerprint comparison system.

Zhao Zhigao also finished processing a fingerprint.

The result is a pity, and it is normal, and it is not successful.

"Another one?"

Smoking out a cigarette and handing it to Lu Chuan, Zhao Zhigao smiled: "It's okay, I got seven or eight fingerprints today, and I didn't get one, let's do it, it's better than ......."

Bite!

As a result, before Zhao Zhigao finished speaking, the prompt for the completion of fingerprint comparison sounded.

"Matchup!"

Four big characters, shining on the screen like the sun.

"Success...... Gone?"

Zhao Zhigao knew that Lu Chuan was a murder.

Homicide case!

That's a homicide!

The slogan and demand that the murder case must be solved is not put forward now.

Ten years ago, twenty years ago, that's what was requested.

With a large province, a population of nearly 100 million, more than a dozen urban areas, and more than 50 county seats, how many cases will occur in a year, and how many murders will there be in a year?

In each district and county alone, there may be only one or two homicides a year, but at the provincial level, there are hundreds of cases a year.

With so many cases, after so many years, there are only eighty-three homicide cases that can enter the fingerprint meeting battle bank.

It can be seen how many people have studied these cases.

However, the case has never been solved, so you can know how difficult it is to solve the case.

And Lu Chuan, in one day, won three murders in a row!