civil forensic

Chapter 84
Ordinary trace inspection is used to do accumulated fingerprints. After the results are made, they must be handed over to fingerprint experts for review.

Some provinces and cities have special organizations such as "Fingerprint Expert Committee" to do the work of fingerprint review.However, most of them feel that the manpower of experts is wasted, and they use the mode of collecting by special personnel, assigning them to experts, and then summarizing their opinions, such as Shannan Province.

However, during the fingerprint battle, there is no need to take off your pants and shit.All the people present are experts. If I skip these experts and go to other experts, it will not be troublesome, but it will also cause everyone's doubts—could my active participation in the battle organized by the Ministry of the Ministry have caused my expert qualifications to be questioned.

At the same time, it is also to increase everyone's work fun and help everyone learn from each other.The fingerprint review during the fingerprint battle will be reviewed by the experts present.

Each time, as long as 11 experts complete the review and have a majority of votes "agreeing to identify", the fingerprint comparison this time is considered a success.The fingerprint post of the provincial department can send a letter to the local criminal police team to organize the arrest.

However, even if 11 experts complete the review, the fingerprint match will still exist in the system, waiting for review by other experts.

If subsequent experts continue to choose "agree to identify", or most people choose "agree to identify", it will not affect the follow-up operation of the fingerprint matching.However, in the whole process, if someone chooses to "identify and exclude", it is possible to enter a new round of discussion and judgment.

Because of this, the judgment of the option of "determined exclusion" must be very cautious, and only when there is strong confidence and basis for judgment will someone choose it.

Li Zemin, the uncle next to Jiang Yuan, clicked on the system's message notification immediately.He has always entered the state relatively late, and it is also because he is too old to beat young people, so he is used to fishing in the first few days, and it is often three or four days after the fingerprint battle that he slowly starts to exert his strength.

However, Li Zemin is still very concerned and curious about the identification of other fingerprint experts.

In the target fingerprint library of the fingerprint battle, any fingerprint is not simple.Most of the fingerprints are actually key fingerprints that have been read and compared by experts.

No county bureau would easily release the key fingerprints of a serious case to the provincial department without multiple attempts.

And the experts in the fingerprint battle are naturally not fuel-efficient lamps.

As a trace inspection post, experts in a province who have accumulated a lot of experience and professional skills will first choose the method they are best at, pick out the fingerprints that they are most likely to match successfully, and then spend many hours, Even days, to try to match fingerprints.

Most of the fingerprint experts can complete such one or two matches within 14 days of a fingerprint battle, which is considered relatively successful.

In order to complete such a match, fingerprint experts naturally have to do their best.

What Li Zemin likes to watch the most is that these colleagues around him are exhausting all their strength and pretending to be nonchalant.

In the system message, there are a total of 12 prompts, which represent 12 cases where the fingerprints of the accumulated cases have been compromised.

Li Zemin has already agreed to all of the previous 11 items.There is nothing to say. The first batch of completed fingerprints were carefully studied and self-reviewed by experts. Few people are willing to spend a long time to achieve a "identification exclusion" by others.

And the latest system message, click to open, and the two fingerprints that pop up are not unexpected by Li Zemin. With a little judgment, it can be confirmed that the two are the same.

Positive comparison is relatively easy, just like it is very difficult for an ordinary person to find the two most similar pigs from a group of pigs.But if you bring two pigs over and ask him whether the two pigs look alike, most people will be able to give a reliable answer.

Let alone an expert.

Li Zemin lightly operated the mouse, and clicked "Agree" on the latest system message.

Then, Li Zemin looked at the specific fingerprint information.

At this time, Li Zemin discovered that the signatory of the "identification" of the fingerprints was Jiang Yuan next to him.

"Good guy, you're lucky." Li Zemin muttered, and then continued to look at the fingerprints.

The first thing Li Zemin saw was the quadrilateral fingerprint structure.He smiled unconsciously, and then praised Jiang Yuan's luck.

However, Li Zemin frowned when he saw the details of the feature points of the two fingerprints.

good guy, good guy...

Li Zemin turned his head involuntarily, looked at Jiang Yuan, and said, "The fingerprint matching you did was not chewed out by software?"

The matching of software systems has its rules.The most basic principle is the matching of how many feature points. If it is more advanced, it can be a scoring system, and it will be released when the number of points is reached.

But Li Zemin looked at the two fingerprints, and when they were put together, it seemed that they couldn't get the feature points together.

However, looking at it by human standards, or in other words, not simply comparing feature points, but comparing structures such as points, lines, and surfaces, it is indeed possible to identify the same.

This can be said to be a very honest fingerprint matching method. In the era when there was no automatic matching by computer systems, everyone used a similar method.

It's just that it's much rarer now.

Jiang Yuan's eyes were fixed on the screen, while operating the mouse, he said: "When I was looking at other fingerprints, I suddenly saw it, pulled it over and compared it, and it matched."

"Then your fingerprints are pretty good." Li Zemin smiled. Jiang Yuan said that he understood quite well. With fingerprints with such a special quadrilateral structure, it is quite normal to compare them occasionally.

But when it comes to the fingerprint structure, it is such a small fingerprint with an area of ​​one centimeter square. In addition to the quadrilateral fingerprints, there may be fingerprints with pentagonal, hexagonal, circular and other structures. It is necessary to have a deep understanding of fingerprints. memory can do this.

"Good luck." Jiang Yuan responded, very entertaining.

Li Zemin laughed, tapped Jiang Yuan with his hand, and said: "It's all right now, you have come to the fingerprint battle at such a young age, and you already have a victory, and there is no pressure from now on. We are old men."

While he was speaking, someone else agreed with Jiang Yuan's "recognition of the same", and on the wall in front of the office, the "ranking list of unsolved cases" displayed by the projector was immediately updated.

Jiang Yuan's name rose by more than [-] places in one breath, and came to the middle position.

And the word "1" definitely appeared on his right side of the result.

Li Zemin's name is still behind, and there is only a "0" in the result, but he is not in a hurry. It is not difficult to go from 0 to 1.

Li Zemin even had time to continue looking at the same case that was identified just now.

"It's the case of rape of an underage girl in Miaohe County. This person has committed crimes three times. I'm familiar with it!" Li Zemin took a hiss and shouted.

Many people looked over, but most of them just heard the movement and were touched.Among the backlog of cases accumulated by the provinces and departments, there are many major and important cases, and human memory is always limited.

However, there was a trace inspector from Miaohe County in the office. At this moment, he couldn't help standing up, walked over and asked, "Did you break 515?"

"It's not me, Jiang Yuan is in the middle. It's from the Ningtai County Bureau." Li Zemin gave way, and then introduced Jiang Yuan: "Qian Mingyu is a fingerprint expert in Miaohe County, and has 20 years of police experience."

"It's useless for 20 years. I've been watching the 515 case for several years. The three victims were all middle school students. After the case happened, the parents came to our bureau many times. Later, the victim also stayed in the county. I couldn't stop, they all moved away one after another, and I called occasionally to ask..." Qian Mingyu was slightly younger than Li Zemin, so he was sobbing at this moment.

Jiang Yuan said bluntly: "I came across a quadrilateral fingerprint. After comparing them, I found them to be the same."

"Let me see, where is it?" Qian Mingyu was familiar with Li Zemin, so he just watched it on his computer.

Li Zemin gave up his seat, took a look at himself, and said, "Wanxiang City, it's a bit far away."

Wanxiang City and Miaohe County, one west and one east, can be regarded as straddling the boundary of Shannan Province.

Qian Mingyu gave a heavy "Yes", nodded to Jiang Yuan, took out his mobile phone, and said, "I'll tell our team leader that this case has been in our county for a long time."

(End of this chapter)