civil forensic

Chapter 1243 Stirring up the Storm



Chapter 1243 Stirring up the Storm

Chapter 1243 Stirring up the Storm

"Oh my, I suddenly feel excited!"

Li Guangnian rubbed Shen Changfeng's neck, his tone full of emotion, and said: "There were three victims in a rainy night. The murderer's methods were cruel and he had a strong anti-reconnaissance awareness. The bodies found so far are still in a state of decay. Director Jiang himself has not been able to participate in the first autopsy. Even so...but..."

After all, Shen Changfeng had been trained by his captain for several years, so he shouted out reflexively, "Yes, yes, it's exciting! The emotions are getting excited."

"Then you stay here and accompany Director Jiang. Please help with anything you need. If there is any connection required, you should also do it as soon as possible." Li Guangnian quickly issued a series of orders.

"Yes." Shen Changfeng took it out of habit without any bargaining.

"Director Jiang, then we will go and investigate the circumstances of the victim's death a few days before his death." Li Guangnian said goodbye with a smile.

"Pay special attention to the occupations of the people around him. Especially those who come into contact with various knives. Well, you should also pay attention to their hobbies." Jiang Yuan reminded.

"I understand. Nowadays, some people like to play with swords and guns, just like some otakus who don't even know how to play Gundam, but start buying Frostmourne. What's good about buying World of Warcraft peripherals..." Li Guangnian said a few words, waved his hand, and left.

Cui Qishan and others also left one after another.

After Shen Changfeng and the others had left, leaving only himself, Jiang Yuan, Miao Ruixiang, Mu Zhiyang, Wen Ming, and a corpse in the room, he whispered, "Our team leader likes Director Jiang very much. He talked about your stories before he had the chance to meet you. He was very excited to see you this time..."

"I can see that I hit you pretty hard." After Mu Zhiyang closed the door of the autopsy room, he had time to complain.

Shen Changfeng quickly said: "It looks painful, but it's actually not that painful, and these are all familiar locations, I'm tired of hitting them."

"This is considered workplace bullying," said Maki Zhiyang.

Shen Changfeng quickly shook his head: "No, our captain was born in the 1980s, an old second-dimensional person, and he does things according to the template of Akagi Takenori. He is actually very good to me."

Mu Zhiyang curled his lips: "We still have to resist if we need to."

Miao Ruixiang next to him asked curiously: "What is Akagi Takenori?"

"It's a character in the comic book 'Slam Dunk'." Shen Changfeng explained.

Miao Ruixiang said he understood: "What is "Slam Dunk" about?"

……

Jiang Yuan took out all the photos of the wounds from the first autopsy on the male corpse and placed them in front of him to read carefully.

In a homicide investigation, the murder weapon is always the top priority. When Jiang Yuan was still young, Ningtai County’s funding was so tight that Huang Qiangmin would drain the water from the creek to find the murder weapon. Shen Yaowei also walked through the garbage mountain in search of the murder weapon.

In a murder case, the facts are not clear just because the police say they are. How can you say it is clear if you can't even find the murder weapon!

Especially when it comes to the stage of sending the case to the court, whether there is a murder weapon or not is a different situation. Let’s not talk about China, let’s take the United States as an example. If there is no murder weapon, how can you guarantee that the American police did not use the Great Restoration Technique, how can you guarantee that the suspect is not tortured, how can you guarantee that the stupid American police will not make mistakes in the investigation, and there will be no substitution of the dead.

Of course, the presence of a murder weapon is not enough to prove the crime, so a chain of evidence including the murder weapon is needed to prove the crime.

In homicide investigations, the murder weapon is often a key, especially in such a chaotic situation, when many traces on the body have been washed away by rain, and the darkness and suburbs make it difficult for surveillance to function. At this time, finding the murder weapon will naturally bring a series of clues.

Especially for this male corpse, when Jiang Yuan discovered that the wound was not caused by a professional knife, he decided to try to find the murder weapon.

What Jiang Yuan refers to as "professional knives" here are actually "ordinary knives", which are more likely ordinary knives held by professionals rather than professional knives held by ordinary people.

For Jiang Yuan, who possesses the "Trace Inspection - Tool Trace Inspection (LV6)", this is the easiest clue to investigate that he has seen so far.

Although the murderer's wounds were mixed up and it was difficult to make out the appearance of a murder weapon, this was only at level 3 to 4 difficulty at most. If it was an autopsy, combined with injections or scanning, Jiang Yuan estimated that he would have reached level 3 perfection. With a full level 2 unit and some money, he could basically come to a similar conclusion.

Unfortunately, the person responsible for the first autopsy was Shen Changfeng.

There is nothing much to say about this. Donghua City is not much stronger than Qinghe City. When Jiang Yuan was not in Ningtai County, the local forensic doctors were either Miao Ruixiang or Wu Jun, who were also not much stronger.

Pathological anatomy itself is not difficult. After solving the problems of nausea and vomiting, a person who graduates from an ordinary forensic university can become basically proficient in it after working for a year or two. He or she can also write routine autopsy reports smoothly. The key is that murder cases are hard to find, and serial killers are even rarer.

Although Shen Changfeng fantasized in his dreams that one day he would encounter a big case and solve it in no time, receiving applause from colleagues and the ACG world, his daily work was to deal with bodies of people who died in car accidents, committed suicide, or died accidentally. This meant that he had been working as a social screw step by step throughout his career. Suddenly, a slightly decayed corpse appeared in front of him...

It is not easy to ask Shen Changfeng to make a judgment, and it is a bit unrealistic to ask him to be comprehensive.

Fortunately, Shen Changfeng's basic operations were standardized. He took pictures where necessary, and the entire autopsy process was recorded. Young people who graduated from professional schools have this advantage, especially those who graduated from good schools. No matter how excited they are, they can always be patient and complete the most basic work.

On the contrary, he could not infer the appearance of the murder weapon from the appearance of the wound, and this is something that a forensic doctor should not be asked to accomplish.

Normally, forensic doctors need 3 hours to develop a level skill. But today's corpses require the appearance of murder weapons to be blurred, tomorrow's corpses require skull reconstruction, and the day after tomorrow's corpses require forensic anthropology. How can there be such people in grassroots units?

In addition to Jiang Yuan, and the various Eight Tigers.

As for the experts invited by Donghua City later, they should have a tool identification level of LV3 or above, otherwise they cannot be called experts. However, the difficulty of tool identification on this corpse is already high, and the difficulty of secondary autopsy is even higher. Coupled with the factor of decay, simple tool identification, even LV4, is probably not going to be useful.

However, these are not difficult for Jiang Yuan.

In addition to LV6 trace inspection - tool mark inspection, he also has LV4 skull restoration, LV5 image enhancement technology, LV5 image recognition and analysis. The modeling of the latter three is much more difficult than that of a murder weapon.

You may know how to do it, but you can't skip the necessary steps.

Jiang Yuan had to screen the photos first, not only those involving wounds, but also had to pay attention to the lens and distortion control - it was good that Shen Changfeng could calm down and complete the photo-taking task, but he should still have a gap to reach LV2 criminal photography.

After screening the photos and conducting a quality assessment, Jiang Yuan then calibrates the data for the photos he needs to use. That is, he calculates the actual length corresponding to each pixel. Finally, he selects a reference point and aligns the photos from multiple angles in space.

When doing this step, Jiang Yuan used Agisoft-Metashape.

When I was doing this step, a child next to me who was studying hard and taking notes actively broke into pieces.

It was not until Jiang Yuan started to do two-dimensional feature extraction, parameter modeling, and then opened ImageJ to analyze the direction of tissue tearing and reconstruct the stirring trajectory that Shen Changfeng laughed out loud.


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