National Forensic Doctor

Wu Junhao stood at the stairs going up to the 28th floor, looking at Jiang Yuan below, searching almost inch by inch, and soon became bored.

He often appears at the scene, but he has never seen such a careful on-site inspection.

However, today's situation was special, and Wu Junhao couldn't run even if he wanted to.

What if you go out to do something and come back and see Jiang Yuan lying in a pool of blood? How do you explain it?

It's a pity that it's not.

He is a man with long arms and legs, like a giraffe, and a good brain, but if he is stabbed, his struggling posture is probably similar to that of a short winter melon like a sika deer.

Therefore, even though he was bored, he could only watch over him - Wu Junhao couldn't help but have various movie scenes pop up in his mind. Those bodyguards who went to the bathroom, security guards who went to bet on horse races, and mercenaries who temporarily fucked a few women, all they saw after peeing was coolness.

Huang Qiangmin next to him was waiting patiently.

In fact, he could have gone back long ago, but he just stayed at the scene, and the others could only accompany him.

Wu Junhao moved, moved, and came to Huang Qiangmin's side, saying: "Engineering technology is really boring."

Huang Qiangmin glanced at him and asked, "Are you bored?"

If he wasn't bored enough, how could he chat with the captain.

Wu Junhao didn't answer, only said: "Are we just going to wait like this?"

"Do you have any idea?"

"I'll take people to search the building. Search each floor, maybe we can catch the murderer." Wu Junhao wanted to go out and play, and he didn't hesitate to work overtime.

Huang Qiangmin said: "Someone went to search."

"They don't search as well as I do. I can search everywhere."

"This building is quite big. There are also various public areas, bathrooms, lounges, utility rooms..." Huang Qiangmin rambled on, refusing to let Wu Junhao go out.

There are now three squadrons of people in and around Wanghe Building, and there is no need for Wu Junhao at all.

Furthermore, the people in the 1st Squadron were already working outside. The addition of Wu Junhao was just causing trouble.

Wu Junhao looked down with a frown, feeling that he was suffering even more than Jiang Yuan who was working.

"Okay. Let's go back." Jiang Yuan took out hundreds more evidence bags and concluded the inspection of the fire staircase.

Wu Junhao suddenly breathed a sigh of relief, as if he had been released. As he walked, he asked, "Did you find anything?"

"I don't know. It's basically trace evidence. You won't be able to see it when you go back. It has to be sent to Changyang." Jiang Yuanneng did the on-site investigation very carefully, but the examination of trace evidence requires a professional laboratory.

Don't say he doesn't know it yet, even if he does, Ningtai County can't afford the equipment.

Don't even think about it if you have it all, just buy a newer and better one. If Huang Qiangmin agrees, the audit can interrupt his hindfoot.

Of course, Huang Qiangmin never thought about such a thing.

He directly named someone and said, "You and Lu Jianfeng, send the things to Changyang and wait for them to check them on the spot. I'll call them later."

Lu Jianfeng was the captain of the Criminal Science Squadron and Jiang Yuan's immediate boss, so he was sent out by Huang Qiangmin to deliver evidence.

However, the working model within the criminal police brigade is like this. The squadron leader is equivalent to the team leader in the class. He usually collects homework and leads the team to do some work. When encountering a large case and collective action, the squadron leader is the battle pacesetter. .

Changyang City is the provincial capital, and the level of the criminal police detachment is more than one level higher than that of Ningtai County. If you trouble people to do a test, you must say something nice.

But saying something nice is enough. The Tan Yong case happened just a few months ago. The Ningtai County Criminal Police Brigade supported a dog and Jiang Yuan and other criminal police officers from the Changyang City Criminal Police Detachment. The incense has not yet been burned.

"Don't go home at night." Huang Qiangmin called to Jiang Yuan again and said, "Just sleep at work. I'll ask the police station to pay more attention to your house. It usually doesn't matter. This method is the safest and the least labor-intensive. .”

"Okay." Jiang Yuan agreed immediately.

He insists on going home now, and maybe he will have to bring bodyguards back with him.

Even so, your home is definitely not as safe as your workplace. It's better to stay up late and work overtime at work.

The most important thing is that there is still no proof that there really is a murderer.

Although Jiang Yuan was able to accept the humiliation after being enlightened by his master Wu Jun, before that, he still hoped that the impact would be smaller.

…

County Bureau.

From outside the gate, you can see the bright lights and the busy atmosphere of people coming and going.

For police officers, standing three stations away and looking at the police station today, they can smell the smell of murder.

In the forensic office, Wu Jun not only laid the floor, but also slept for a while.

Seeing this, Jiang Yuan directly took Wang Zhong and reassembled his "high-end computer" to the trace inspection office next door. Then, he turned it on and did video enhancement.

In the trace inspection office, Yan Ge, who was also working overtime, was confused for a while, and then said helplessly: "If you don't bother your master, you can use this engine to torture us."

"My master has already fallen asleep. It would be too cruel to wake him up again." Jiang Yuan offered to Zhonghua and said with a smile: "Have a cigarette to wake up your brain. I can do it very quickly."

"I told my wife the same thing last time." Yan Ge mocked himself as he picked up a cigarette and soon became happy under the stimulation of nicotine.

Jiang Yuan pulled out the video that was just uploaded today from the intranet, sat on the chair, and started operating it seriously.

Enhancing videos is inherently more difficult and complex than enhancing images.

The simplest video enhancement is to enhance each frame of the picture. A simpler way is to intercept a few frames from the video, enhance them, and directly analyze the desired target.

Jiang Yuan didn't know what he could see this time, so he enhanced the video as a whole. In fact, it is to use software and algorithms to enhance the overall quality, and then look at the results.

So far, criminal police officers from several squadrons have sent back a total of 6 mobile phones with 6 videos.

The six videos were all within the window of the incident. The first video Jiang Yuan saw was only 3 seconds long, and the longest one after that was only ten seconds long.

The shooting angle and shooting distance also vary.

There are two videos taken from downstairs, which are almost useless. The two videos taken from the other two buildings, the two videos taken from the front are not bad, and the remaining two videos also cannot see much.

Jiang Yuan cut out the two forward videos and enhanced them respectively.

The video enhancement algorithm can be run over and over again.

Moreover, unlike what most people imagine, video enhancement often involves choosing an algorithm and running it many times, but it is not easy to change the algorithm and run it again.

Because different principles of video enhancement are often in conflict, if you try one and then another, not only will it not be clearer, but it will often be completely blurred.

Jiang Yuan was also furious. He first chose a suitable algorithm and ran for more than an hour. When he found that the effect was not obvious, he changed to another algorithm and continued running wildly.

While running the algorithm, Jiang Yuan went back to the office to sleep.

Get an hour or two of sleep and then come back and watch.

Yan Ge and Wang Zhong were so noisy that they couldn't do anything. After finishing their work, they simply moved the camp bed to sleep in the medical examiner's office.

In the morning, Jiang Yuan took out the video with the best conditions and played "Let's find fault" frame by frame.

The enhancement of a single picture is already very reluctant at this time, but at last something is vaguely visible.

"Is there a pair of shoes here?" Jiang Yuan pulled Wang Zhong over and asked him to look at the picture on the screen.

Separated by dozens of meters, maybe hundreds of meters away, when the mobile phone lens is zoomed in as close as possible, the portrait captured is only a little larger. Then, through the glass curtain wall, you have to see whether there is a pair of shoes inside...

But under high magnification, Wang Zhong actually saw a pair of sneakers.

"Really? Are there really a pair of shoes?" Wang Zhongdu didn't believe it.

"And it's two-color or multi-color." Jiang Yuan tapped the screen vigorously.

He has no doubts about the results he has achieved.

"Looking for the yellow team?"

"Look for it."

Jiang Yuan answered, relaxing a little.

Huang Qiangmin quickly took people to see the pictures.

Enhanced pictures and videos are not completely comprehensive enhancements. They are more like beauty cameras. If you enhance one part, you will lose another part.

Therefore, the picture does not look very good.

As for the only pair of shoes, from Huang Qiangmin's point of view, there is actually nothing to tell.

Maybe there is a murderer, maybe there are witnesses, maybe the image is wrong...

Huang Qiangmin said nothing, only nodded and praised a few words, and then said: "The social relations of the deceased are also relatively complicated. We are going to sort them out first."

Following social connections to find the murderer has always been a good way to commit murder.

Especially for such hidden murderers, they are often considered to be people known to the deceased.

Jiang Yuan has no say in this traditional criminal investigation method.

He thought for a while and said: "It will take a few days for the results of the trace physical evidence to be available. I want to go to the market to look at the shoes."

Huang Qiangmin understood immediately upon hearing this that Jiang Yuan wanted to find shoes that matched the footprints.

If it can be found, it will definitely help the case.

Huang Qiangmin also saw other footprint experts doing similar things, so he immediately agreed and said, "You should always follow people around you."

Jiang Yuan didn't refuse. He had to do things anyway, so the two of them could still chat all day long.

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