There are eighty-three cases, excluding the cases in Haizhou City and the cases that Lu Chuan had already won yesterday, there are still more than seventy left.
Each case can be said to be a sensational case in the year when it was committed.
The detection of any case not only represents the detection of the case that year, but also represents the end of an era.
The murder of miners in Meishan ten years ago is just one of them.
Li Hong was an ordinary employee in the mine back then, but he was not ordinary.
Li Hong's life is full of challenges, doubts, and incomprehension.
Since ten years ago, Li Hong has embarked on a path of no return in the eyes of everyone in Meishan Coal Mine, including his family.
Complain.
Since Meishan Coal Mine was restructured and acquired by Meishan Mining Group ten years ago, Li Hong has gone from an ordinary safety supervisor to a thorn in the side of daily complaints.
Chen Hu, who was once a colleague, rose step by step from safety officer to become the most influential safety director in the coal mine.
In any coal mining industry, the most important position is not working or marketing.
There is no need to worry about selling coal.
The most important positions in coal mines are those related to safety supervision.
Chen Hu is now the safety director with the greatest say in the coal mine.
Today, the entire Meishan Coal Mine is enveloped in a tense and confused atmosphere.
"Did you hear that Mr. Chen was arrested?"
"I took it away at the wine table where I was having dinner with the boss last night."
"It's about the case ten years ago..."
"Ten years ago...then Li Hong..."
In the ten years since Li Hong filed the lawsuit, the subject of the lawsuit was the Meishan Mining Group. According to people in the mine, it was eating other people's food and smashing other people's pots.
Over the years, if it weren't for Chen Hu's care, Li Hong would have been fired long ago.
Now, Chen Hu has been arrested, and Li Hong has also been taken for questioning.
Meishan Criminal Investigation Detachment interrogation room.
"My complaints are all true. They did a lot of illegal things in order to embezzle assets. The people in the mine who were complicit with them were all promoted. Those of us who were against the grain have become like me..."
Li Hong's transcript provided a very important basis for the detection of the case.
The evidence that Chen Hu committed murder is conclusive, but he did not kill for personal grudges.
"Back then, my superior asked me to forge a safety report. When I was talking in the mine, he overheard me and had no choice but to kill him..."
Behind Chen Hu's murder was a hidden mining accident that year.
"The purpose is for the smooth acquisition of Meishan Mining Group..."
Facing the death sentence, Chen Hu confessed everything.
Some of the people involved in the case have retired, and some are now in high positions.
The Meishan Criminal Investigation Detachment is very busy.
In the fingerprint battle conference room, Lu Chuan naturally didn't know that the Meishan Criminal Investigation Detachment had not slept all night, and now Lu Chuan was picking the fifth case.
In fact, there is nothing special about the so-called selection. Lu Chuan still chose the muddy fingerprints. ap.
Because this type of fingerprint is relatively easy to process using mathematical methods and computers.
Eight years ago, a headless corpse case occurred in Yunfeng City.
When the body was discovered, it was highly decomposed and looked like a giant.
The giant state is an advanced change of the corpse. The corpse is highly decomposed and it is difficult to accurately identify the relevant information of the deceased.
At that time, the identity of the deceased was not confirmed through fingerprint collection, DNA comparison and other methods.
However, the weapon used by the murderer to kill the deceased was left in the body. It was a fruit knife, and half a bloody fingerprint was extracted from the handle.
The head was cut with a sharp weapon and was never found after the incident. The scene where the body was found was not the first scene, but the murder weapon was left in the body of the deceased.
It's a very strange scene, there are clues, and it's very direct, but after so many years, it still hasn't been solved.
case.
Dragging the fingerprint into the PS software, Lu Chuan began to process it.
"Teacher Lu...what are you doing?"
PS software is something that basically everyone who plays fingerprints has used. Many of the experts present can even be said to be relatively proficient in PS software.
However, compared to Lu Chuan's operation, what everyone calls proficiency seems to be just knowing how to use it?
What Lu Chuan is doing is image layering, but unlike ordinary image layering, Lu Chuan uses two-bit image transformation.
By digitizing the fingerprint image and then using formulas to distinguish the data of different coatings, the effect of coating separation is achieved.
"This way the layering of the image is more thorough, starting from the source of the data, which is much better than the surface layering of the software itself, and the final image obtained is clearer."
"oh……"
There were a few people behind him who seemed to understand, and even more people frowned.
What is data origin?
Lu Chuan did not hide his secrets. While layering the data, he explained to everyone: "The relatively simple sine function transformation used here is then connected by Fourier transform..."
Therefore, as Lu Chuan's explanation deepened, fingerprint identification analysis gradually evolved into a mathematics class.
"Is this transformation certain?"
Zhao Zhigao asked what most people were thinking: "Is there a pattern?"
Lu Chuan's hands paused while tapping the keyboard.
"There are certain rules, but the main requirement is that the user has a high level of mathematical foundation."
When Lu Chuan studied mathematics before, he was relatively good at it.
But compared with the mathematical skills in the advanced fingerprint identification and analysis skills rewarded by the system, they are still pale in comparison.
Most people can't remember several different names, let alone use them.
Moreover, the use here is not an ordinary test question. You need to program the computer yourself and then analyze the uncertain variables.
This is a transition from the test-taking stage to practical application.
Not to mention ordinary people, even experts who specialize in mathematics may not be able to handle it.
Academics and practical applications are never the same thing.
What's more, many of the fingerprint identification and analysis experts present can't even remember where the keys on the keyboard are. They want to be like Lu Chuan...
It's not that difficult.
Gradually, those who could not understand went back.
Everyone has their own skills that they are good at. If you can’t learn other people’s skills, you should study your own skills.
"Ding!"
The pleasant sound sounded, and Lu Chuan was darkly excited.
The screen showed that the comparison was successful, which was recognition of the results of Lu Chuan's more than two hours of work.
The murderer of the unsolved case in Yunfeng City was successfully compared!
The points on the hero list and the number of solved cases are updated accordingly.
"Is this a win?"
Zhang Tao smacked his lips and poked the colleague next to him: "Lao Li, your unsolved case has been solved!"
Li Yunwei is studying a fingerprint that is missing about one-third, and is currently getting excited.
It always feels like just a little bit can be achieved in one fell swoop.
As a result, just when Li Yunwei thought he was about to reach the clouds, he was stabbed.
He glared at Zhang Tao: "I almost came out! What are you doing?"
