Chapter 156: Sneakers

Wu Jun stood at the stairs going up from the 28th floor, watching Jiang Yuan search almost inch by inch, and soon felt bored.

He also often appears at the scene, but he has really never seen such a careful crime scene investigation.

It is a pity that today's situation is special, and Wu Jun wants to run but it is not easy to run.

If he goes out to do something, and comes back to see Jiang Yuan lying in a pool of blood, how to explain it?

It's also a pity.

A man with long arms and long legs, like a giraffe, and a good brain, but if he is stabbed, the struggling posture is estimated to be similar to a plum blossom deer-like short dwarf.

So, although bored, he can only guard him—Wu Jun's mind couldn't help but flood with various movie scenes. Those bodyguards who went to the restroom, security guards who went to horse racing, mercenaries who temporarily screwed a few women, after peeing, what they saw were all cold.

Huang Qiangmin next to him was quite patient waiting.

He could have gone back long ago, but he stuck to the scene, and others could only accompany him.

Wu Jun moved and moved, came to Huang Qiangmin's side, and said: "Doing technology is really boring."

Huang Qiangmin glanced at him and asked: "You are bored, right."

If he wasn't bored enough, how could he find the brigade captain to chat.

Wu Jun didn't answer, only said: "Are we just waiting like this?"

"Do you have any ideas?"

"I'll take people to search the building, search layer by layer, maybe I'll catch the murderer." Wu Jun just wanted to go out and play, and he didn't care about working overtime.

Huang Qiangmin said: "Someone went to search."

"They didn't search as well as I did. I can find it even in the corners."

"This building is huge. There are various public areas, restrooms, lounges, utility rooms..." Huang Qiangmin was wordy and didn't let Wu Jun go out.

Now there are three squadrons of people in Wanghe Building and the surrounding area, and Wu Jun can't be used at all.

Furthermore, the people of the First Squadron were originally working outside, and adding a Wu Jun would just be making trouble.

Wu Jun looked at the bottom with a sad face, feeling that he was more bitter than Jiang Yuan who was working.

"Alright. Go back." Jiang Yuan took another hundred physical evidence bags of physical evidence, which was considered the end of the fire stairs inspection.

Wu Jun breathed a sigh of relief, as if he had been released, and asked while walking: "Did you find anything?"

"Don't know. Basically, they are all trace evidence. You can't see them when you go back. You have to send them to Changyang for inspection." Jiang Yuan can do crime scene investigation very carefully, but the inspection of trace evidence has to go to a professional laboratory to do it.

Not to mention he doesn't know yet, even if he knows, Ningtai County can't afford the equipment.

Don't think about it, just buying a newer and better one, Huang Qiangmin promised in the front, and the audit could break his back.

Of course, Huang Qiangmin never thought about this kind of thing.

He directly pointed to a person and said: "You go with Lu Jianfeng, send the things to Changyang, and wait there for them to do the inspection. I will call them later."

Lu Jianfeng is the captain of the Criminal Science Squadron, which is considered Jiang Yuan's immediate superior, and was sent out by Huang Qiangmin to send evidence.

However, the working mode within the criminal police brigade is like this. The squadron captain is equivalent to the small group leader in the class. Usually, he collects homework and leads the team to do work. When encountering a big case and collective action, the squadron captain is the combat pacesetter.

Changyang City is the provincial capital, and the level of the Criminal Police Detachment is more than one level higher than Ningtai County. Asking people to do testing, you must say something nice.

But saying something nice is enough. The Tan Yong case was only a few months ago. The Ningtai County Criminal Police Brigade supported a dog to the Changyang City Criminal Police Detachment at that time, as well as Jiang Yuan and other criminal police. The incense hasn't been burned yet.

"Don't go home at night either." Huang Qiangmin called Jiang Yuan again and said: "Sleep in the unit. I'll let the police station pay more attention to your home. Generally, it doesn't matter. This method is the safest and most labor-saving."

"Okay." Jiang Yuan agreed immediately.

If he insists on going home now, he might have to bring a bodyguard back.

Even so, home is definitely not as safe as the unit. It's better to stay up late and work overtime in the unit.

Most importantly, there is still no proof that there really is a murderer.

Although Jiang Yuan has been able to accept the loss of face after the enlightenment of 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 busy temperament of the lights being bright and people coming and going.

For police personnel, standing three stops away and looking at today's police station, you can smell the smell of homicide.

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

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

In the trace inspection office, Yan Ge, who was also working overtime, was stunned for a while, then said helplessly: "You don't disturb your master, but you use this engine to torture us."

"My master is already asleep, it's too cruel to wake him up again." Jiang Yuan said, offering Zhonghua, and smiled: "Smoke a cigarette, wake up your brain, I'll do it very quickly."

"I told my wife the same thing last time." Yan Ge bit a cigarette self-deprecatingly and soon became happy under the stimulation of nicotine.

Jiang Yuan pulled the video uploaded today from the intranet, sat on the chair, and operated it seriously.

Enhancing video is inherently more difficult and complex than enhancing pictures.

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

Jiang Yuan doesn't know what he can see this time, so it is an overall enhancement of the video. In fact, it is to use software and algorithms to strengthen it as a whole, and then look at the results.

So far, the criminal police of several squadrons have been scattered, and a total of 6 mobile phones have been sent back, with 6 videos.

The time for the 6 videos to aim at the incident window is not long. The first video Jiang Yuan saw was only 3 seconds, and the longest subsequent one was only more than ten seconds.

The shooting angle and shooting distance are also different.

There are two videos shot from downstairs, which are almost unusable. The two videos shot from the other two buildings, facing forward, are quite good, and the remaining two videos can't see much either.

Jiang Yuan intercepted the two videos facing forward and enhanced them separately.

Video enhancement algorithms can be run over and over again.

Moreover, contrary to what most people think, video enhancement is often to choose an algorithm and then you can run this algorithm many times, but it is not good to change to another algorithm and run it again.

Because the principles of different video enhancements often conflict, running one, and then running another, will not only not be clearer, but often will be completely blurred.

Jiang Yuan also made a ruthless move, first chose a suitable algorithm, ran for more than an hour, found that the effect was not obvious, changed to another algorithm, and then ran wildly.

In the process of running the algorithm, Jiang Yuan went back to the office to sleep.

Sleep for an hour or two, and then come over to see.

Yan Ge and Wang Zhong were so noisy that they had no choice. After finishing the work in their hands, they simply moved their folding beds to the forensic office to sleep.

After running like this until morning, Jiang Yuan took out the video with the best conditions and played "find the difference" frame by frame.

Single pictures, doing enhancement again, are already very reluctant at this time, but, after all, a little bit of something can be seen vaguely.

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

Across tens of meters, maybe hundreds of meters, the mobile phone lens is pulled to the closest, and the portrait shot is only a little bit big. Across the glass curtain wall, to see if there is a pair of shoes inside...

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

"Really or fake? Is there really a pair of shoes?" Wang Zhong couldn't believe it.

"And it's two-color or multi-color." Jiang Yuan pointed at the screen hard.

He believed in the results he made.

"Find Team Huang?"

"Find him."

Jiang Yuan answered, and relaxed a little.

Huang Qiangmin quickly brought people to see the pictures.

The enhanced pictures and videos are not completely comprehensive enhancement, more like a beauty camera. You enhance one part, and you have to lose another part.

Therefore, the pictures don't look very good.

And the only pair of shoes, from Huang Qiangmin's point of view, actually can't see anything.

Maybe there is a murderer, maybe there is a witness, maybe it is an image error...

Huang Qiangmin didn't say anything, just nodded and praised two sentences, then said: "The social relationship of the deceased is also quite complicated, we are preparing to follow it."

Following social relationships to find the murderer has always been a good way for murder cases.

Especially this kind of murderer who hides his head and shows his tail, often considers people the deceased knows.

Jiang Yuan has no right to speak about this traditional criminal investigation method.

He thought about it and said: "Then the trace evidence will take a few days to get results. I want to go to the market to see the shoes."

Huang Qiangmin understood as soon as he heard it. This is Jiang Yuan wanting to find shoes that match the footprint traces.

If it can be found, it will definitely have a promoting effect on the case.

Huang Qiangmin has also seen other footprint experts do similar things, and immediately responded, and said: "You must always have someone with you."

Jiang Yuan didn't refuse either. Anyway, he had to do things. The two of them together could chat. ===== CHAPTER 157 =====