National Forensic Doctor

meeting room.

The begonia flowers on the windowsill are pink, and the cigarette butts in the pot have been carefully picked up by a botanist. The smell is pleasant.

The meeting room was very quiet, except for the sound of a broken pen that could not be written and the pen being flicked anxiously.

Huang Qiangmin urgently mobilized a batch of pens and finally solved the problem.

The botanists then went about their business in silence.

For Su Lei and others, botany itself is a dull science that does not require much verbal communication. Most of the knowledge is accumulated over many years.

This made her doubt Jiang Yuan's botany ability. In terms of age alone, students of Jiang Yuan's age are, at most, graduates of graduate school and have just begun doctoral studies. The reason for this consideration is that undergraduates and master's students do not have enough time to accumulate enough knowledge of botany. of.

Not every botanist knows all the plants in a botanical garden, and many people may not recognize most of them. However, it is still far from being a botanist to recognize all the plants in the botanical garden.

Based on Su Lei's thinking, she could easily imagine that if Jiang Yuan did not have real forensic botany abilities, wouldn't there be huge problems with the botanical evidence that he had identified.

Thinking of this, Su Lei's sense of social responsibility exploded instantly.

Su Lei's scientist spirit allowed her to focus on the job she had just received.

She believes that the conclusion of her work is the best explanation!

The video of the drone crawling out was divided into pictures one by one. Su Lei zoomed in and looked at each one. If she encountered any doubts, she marked them, and then went back to read them carefully. She felt quite comfortable.

After jotting down two steps in her notebook, Su Lei asked the familiar botanist next to her: "Who processed this image? It feels like it is similar to satellite remote sensing images. The image enhancement is quite good."

Satellite remote sensing images are the so-called only way to apply them. Only after image correction, image enhancement, and information extraction are performed on the obtained images, manual interpretation can be performed.

Although the image area faced by Jiang Yuan and others is not as large as that of satellite remote sensing images, it is still too difficult to distinguish with the naked eye, and there must be a lot of rework. The current mode is obviously much more advanced, and its accuracy and convenience have also been improved.

The botanist who came first was obviously very satisfied. He smiled and said, "The image enhancement done by Team Jiang is said to be for video surveillance and the like. He is self-taught."

"This..." Su Lei couldn't stand it on the spot: "Teach yourself video surveillance and image enhancement at the same time, and then also learn botany at the same time?"

"Well..." The botanist who came first obviously didn't think this kind of thing was normal, but he didn't have the strength to refute.

Su Lei blinked and couldn't help but look around and said: "There are five botanists among us, but none of us seems to know how to process satellite remote sensing images."

"Because we are botanists!" the person next to him emphasized.

"But forensic scientists know how to process satellite remote sensing images. Is this normal?" Su Lei looked at the pictures assigned to her computer. Among other things, the geometric correction was very beautiful. Almost all modern botany practitioners are exposed to satellite images, including the current aerial images taken by drones. Because of the deformation of photographic materials, objective lens distortion, atmospheric refraction... the original images are not truly aligned.

And correcting them... To put it simply, it is much more difficult than using Photoshop to beautify people.

In addition, the captured images cannot always be clear. Contrast adjustment, color synthesis, density segmentation, and image fusion are all essential.

Finally, even image cropping is an image preprocessing task.

Su Lei has seen images that were very comfortable to process, and also seen images that were very uncomfortable to process. Now when she thought about it, she felt that the images in front of her were the ones she had ever been exposed to, and the processing level was one of the best.

The botanists in the same room had more qualifications than Su Lei and had seen many more pictures. At this time, they heard Su Lei talking about this topic, and they all praised Jiang Yuan.

Jiang Yuan said modestly: "The things we study as forensic medicine are inherently complicated. There are specialized branches of forensic imaging and forensic botany, but our studies are relatively shallow. Please bear with me."

"Don't dare to go too deep. If you go deeper, those who engage in satellite remote sensing and botany will be unemployed." The botanist next to him shook his head.

"No, we are all just dabbling in it, so we need everyone's help." Jiang Yuan spoke, clicked the print button on the computer, and the inkjet printer next to him began to work. stand up.

Su Lei couldn't sit still, so she stood up again, stepped on her high heels, and walked up to the printer.

It's a large commercial printer with a fixed asset identification card affixed to it, and the characters "Jianjiang City, Shannan Province" shine brightly.

Su Lei frowned, feeling a little inconsistent, but she didn't notice the specific problem.

"Is there something wrong with this mountain col?" The picture Su Lei saw had been enlarged and marked. She looked carefully and saw that there was nothing wrong with the markings. The vegetation in this area did look like a corpse. She judged: "The newly grown shrubs, which look like four or five years old, should not be six years old."

"Well, dig it out and take a look. Maybe it's wrapped in something." Jiang Yuan also walked over, standing a head taller than Su Lei.

Using forensic botany, it is generally possible to determine the burial status of corpses within a few years. Moreover, corpses that do not use coffins or other methods are usually particularly obvious. Therefore, if the outside is wrapped with straw mats or plastic sheets, the underground environment or state will be different. The specific differences are not very clear to forensic scientists.

The concept of corpse farms has been around for a long time. There are not so many corpses at home and abroad that are so harmful.

If other majors face a shortage of research funds and researchers, forensic medicine faces a shortage of research materials. Especially in recent years, those engaged in forensic research are almost as good as those engaged in alien research—— They all began to use theory to surpass reality.

Su Lei looked up at Jiang Yuan. Speaking of which, Jiang Yuan is younger than the master students she has taught, but what Jiang Yuan is doing now, and even his current level of relaxation, are beyond the reach of most botany scholars.

"Forensic Doctor Jiang seems to be doing things very quickly." Su Lei asked.

Jiang Yuan smiled and said: "I will come earlier. After I finish, I can help everyone."

"That's good." Su Lei was polite and went back to her seat to do some work.

Later, a policeman from the backlog squad came over and took the printing paper from Jiang Yuan's hand. Someone organized a small team of people and the entire police dog squadron to dig in the area.

After a while, Jiang Yuan printed several pieces of paper in succession, then started to get up and take a walk.

Su Lei looked over in surprise and asked, "Just for a moment?"

"Well, I'll hand in the paper first. How can I help?" Jiang Yuan asked politely.

Botanists who can be included in Pang Jidong's list and dare to accept the invitation are definitely the best in domestic botanical circles. Jiang Yuan's forensic botany is just a branch of the branch of botany, and there is nothing to be proud of.

Su Lei always found it incredible. Recalling her previous thoughts, she decided to test Jiang Yuan and said, "I have a few doubtful plots here. Captain Jiang can help me take a look."

Jiang Yuan nodded, immediately came over to take a look, and quickly proposed a solution, saying: "I think it should be fine. If you are worried, we can process the image again."

As he spoke, he returned to his seat and sent the enhanced image to Su Lei with a quick output.

Su Lei couldn't help but fall into self-doubt when she looked at the extremely clear image and the plot of land that was ruled out as a suspect.

A layman looking at Jiang Yuan would only think that this guy is quite powerful, like the kind of expert who grows up other people's children.

There is only one like Su Lei. She was originally someone else's child. She was very good at reading. She skipped grades and took exams at the same time. She took the college entrance examination at the age of fourteen and went abroad after graduating from university at the age of seventeen. Five years later, she even got a Ph.D., on the spot. Entering the station and returning to China two years later, the Four Youths started. In less than five years, they had their own team. Then they chose a new direction, took their students, and fought hard for seven years. He is one of the pioneers in the field of biology.

It can be said that the other botanists present may be very strong in terms of strength and ability, but they are also older, and they tend to have ordinary resumes. At least in high-level academic circles, they cannot be called geniuses. of.

Su Lei is a true academic genius, and a genius who works at full capacity. She believes that among her peers, there may be someone who can surpass her achievements. After all, this thing also depends on luck, but it seems that she is only twenty Jiang Yuan, who is many years old, is still a forensic doctor and has a high level of botany knowledge. This really challenges Su Lei's outlook on life.

Coupled with a high level of image enhancement technology...

"Thank you. Can you help me make a few more images?" Su Lei asked directly.

"Okay." Jiang Yuan responded. His line has been penetrated, and now he wants to support other lines.

The image of line C is also relatively complicated, and Su Lei chose it specially. Although most of the images have been processed by Jiang Yuan and can be read smoothly, Jiang Yuan's time was limited before, and he could only perform rough processing in the face of a large number of pictures.

The several pictures Su Lei proposed are all of plants with very complex conditions and clear enough images. Although research and judgment can also be done, the efficiency and effect are definitely not very good.

Jiang Yuan had no doubt that he was there. He sat down and moved quickly. LV5's image processing technology could only be said to be a blast when faced with the normal images taken by this kind of drone.

After another while, Su Lei got a new image.

Compared with the previous images, this set of images is not only clearer, but also clearly classified plants accordingly. That is to say, we use the prior knowledge of the category attributes in this area, and then use the characteristics of these sample categories to establish A certain discriminant function is obtained, thereby classifying the types of the entire image.

Needless to say, this kind of image is friendly to botanists. Su Lei felt that it was more comfortable than the images she got from national laboratories. The satellite remote sensing experts over there would not process the pictures so thoughtfully.

Su Lei silently made an appraisal, and then silently threw the new image to Jiang Yuan.

Jiang Yuan continued to deal with it, still very quickly.

The two of them went back and forth, which actually made the work progress a lot faster.

Gradually, Su Lei even felt a trace of guilt towards Jiang Yuan: Such a genius among geniuses, but I actually neglected him because he was a forensic doctor. Isn't this the unfair treatment I have received? Why did I suddenly become like this? It's so inappropriate...