civil forensic

Chapter 433 Chao Wen Dao

The basement of the Longli County Criminal Police Brigade.

Looking at Faji Zhai's red eyes, Fayi Ye was a little scared, and when he was taking out a basket of bones, he said kindly: "Zhai Chu, do you want to take a break? You can do your work anytime, and you can do it anytime. Don't try so hard."

"Rest..." Fayi Zhai tilted his head, and repeated Ye Fayi's words a little slowly, like a broken repeater. After a while, he said: "If you take a rest..., yesterday was nothing. Stayed up late?"

"You didn't need to stay up late yesterday." Ye Fayi couldn't laugh or cry, and thought, what can you do now that you have to be cheated of 10 yuan for breakfast.

Fayi Zhai struggled for a while, took another sip of the strong wolfberry tea in the thermos that he brought with him, cheered up a little, and said: "Although I only read a few simple things yesterday, if I just want to understand the cutting-edge technology, I should It is also enough."

Forensic Ye Ye clicked twice: "You are too hardworking."

"What about you, you are still young, so you don't want to fight?" Fayi Zhai kindly mentioned Fayi Ye.

Forensic doctor Ye laughed: "I am 46 years old, and I can fight for a few more years."

Forensic Zhai looked at him coldly: "Maybe I can fight 10 years longer than I can."

There are several key steps in skull restoration, from [-]D modeling, to the calibration of feature points, to the overall deformation and local deformation. In this series of processes, [-]D modeling is to create an identical skull and feature points on the computer. The calibration is equivalent to attaching soft tissue to the skull, and the overall deformation is the adjustment of the position and proportion of the organs, that is, where is the nose, how high is the brow bone, and what is the shape of the mouth.

He mainly wanted to do the case, or in other words, to really restore the two skulls, so he started working as usual after taking care of other people a little bit.

Times change, and so do the polynomials, coefficients, and equations on the screen.

Forensic doctor Ye said: "I can do anything."

Everyone expressed that they would do skull restoration.

"Chasing every day is a day. I'm also doing my best." Forensic doctor Zhai relaxed his tone, then turned to the young forensic doctors who came to train, and said, "You have more opportunities. If you have time recently, you can read the relevant information." Even though Jiang Yuan is in Shannan Province, when you go out of the province later, it will not be easy to see such cutting-edge technology."

And wanting to perfectly reproduce the appearance of the deceased during the partial deformation process is as complicated as guessing what he (she) made himself into. There are a lot of details to pay attention to.

Local deformation determines the specific shape and details of the facial features, that is, the size of the nose, the size of the mouth, etc. This step is actually equivalent to what a plastic surgeon can do.

"How long has Captain Jiang been studying?"

The young forensic doctors nodded one after another. Everyone understands the truth.

Seeing this, Jiang Yuan continued talking.

Forensic doctor Ye was stunned for a moment. He has been in bad shape for many years. The general leaders either don't understand forensic technology, or they are not a few years older than him. It is really rare for people to grind their crotch with their heels like this.

Fayi Zhai even smiled calmly, and said, "I reviewed it all night yesterday, just to understand it better when I want to read it."

The young forensic doctors who followed nodded solemnly. In Jiang Yuan's words, not only the knowledge of forensic anthropology is contained in it, but also the knowledge of mathematics and computer is required. It is difficult, but it is only now. Everyone still stared with bated breath, struggling to digest.

Up to this point, it can be understood as an unchangeable physiological characteristic of a person.

"There are some key data to pay attention to here. For example, the distance between the brow center point and the outer corner point of the eye socket, the distance between the outer corner points of the two eyes, etc. of the skull model to be restored..." Jiang Yuan began to fill in some information while talking. data.

"We must study hard."

Several forensic doctors are in a good mood.This is the most common situation during training. When faced with a brand new and very advanced thing, everyone's interest and enthusiasm are very high.

Partially deformed, changing beyond recognition.

Jiang Yuan didn't hide his secrets anyway, unfolded the software and said: "No. 2 is relatively slow, but it can also achieve local deformation, but this part itself may need to be more detailed, because the final effect is largely local deformation. It’s decided. Let’s continue to work on it first, everyone will take a look first, and have a basic feeling. If you want to look at it from the beginning later, just find another case.”

"clear."

Install the 3DSlicer in the same way, put it on the table and open it, put out the half-made skull before, Jiang Yuan said again: "It happens that the computer upstairs runs the male skull of No. 1, and here we make No. 2 first. Then, you How about looking at the bones, or do skull restoration with me?"

While speaking, he looked at Forensic Zhai, Forensic Ye and other young forensic doctors.

Lao Ye also nodded.He does not seek to understand, but mainly pays attention to an atmosphere.

But if you carry two baskets of corpses up at one go, it feels a bit weird, and it's not very convenient to spread them out, so they are simply placed in the room in the basement-the funeral home is too far away, and everyone actually doesn't bother to go there.

While pulling the screen, Jiang Yuan said: "As we all know, there are two main methods to realize the local deformation of the reference face model: one is the scattered data interpolation method, and the other is the free deformation technology FFD. I am going to use the first one now. The method adopts the radial basis function interpolation method, and the commonly used radial basis functions include Gaussian function, Hardy quadratic function, thin slice spline with linear additional term..."

Jiang Yuan typed on the keyboard for a while, got up and said, "Run and have a look. Essentially, the radial basis function network is a three-layer feedforward network..."

Fortunately, he has been in bad shape for a long time, so he said casually: "I'm too far away from the frontier, and it's useless to stay up all night."

While talking, Jiang Yuan also came over.

"It's good to know as much as you can learn." Forensic doctor Zhai tried his best to be conservative, so as not to say too good, let these young forensic doctors have unreasonable fantasies, and then face failure.

Forensic doctor Zhai nodded slightly. After all, he has the basics, including skull restoration. What he mainly lacks is the pre-requisite skills, knowledge of forensic anthropology, which is still very smooth.

"Let's start directly?" Jiang Yuan brought a high-performance laptop, which Bureau Huang had just sent over from the county, and the source was unknown.

"Forensic Zhai has a heart." Jiang Yuan praised, at such an age, he can still maintain his pursuit of technology.

Theoretically, if a corpse had undergone plastic surgery before its death, depending on the degree, it could be seen roughly.

On the one hand, people themselves like new things, on the other hand, new technologies have broad prospects, and it would be great if you have yourself in the prospects.

As Jiang Yuan spoke, he began to assign values ​​to these functions.

In the previous purely manual cranial restoration, there was no need to consider these functions and other issues, and more art and sculpture skills were needed.Switching to computer assistance, pre-requisite skills such as sculpture are not necessary, and what is replaced is the requirements for mathematics and computers.

Therefore, dry corpses are more popular with forensic doctors than wet corpses.

It's still not easy to take the whole body to the office upstairs.Occasionally, I would go up with a skull in my arms, and leave with a pinch of my waist, and the policemen I saw on the road would not say anything.

However, to hear the Tao does not mean to be enlightened.

Forensic doctor Zhai is old, so he definitely doesn't understand these things, but young forensic doctors are all college students who have just graduated. Although under normal circumstances, they still don't understand these things, but what kind of mathematical genius is Bao Buqi...

not at all.Everyone subconsciously looked at the other parts of the skeleton. Although forensic anthropology always makes people feel unfriendly, it depends on who you compare it with.

Jiang Yuan looked at Forensic Ye again.

Forensic Ye looked at Jiang Yuan with clear eyes and a smile on his face.If you don't understand, you don't understand, and he, Ye Liwang, has a clear conscience.

(End of this chapter)