civil forensic

Chapter 74 Identifying the Source
On the way back, Wang Zhong became taciturn.

On the waterlogged street, there were few pedestrians and vehicles, but Wang Zhong was staring out the window with dull eyes.

It was almost time to arrive at the criminal police team, so Wang Zhong asked, "Aren't we too useless?"

Jiang Yuan frowned tactically: "Us?"

"What I mean is that we are engaged in technology. You see, if the conditions are not met, there is no way to solve the case. You just say, it's just a heavy rain, surveillance, surveillance can't see, fingerprints, fingerprints can't be scanned, footprints, footprints I can't match..." Wang Zhong muttered, "I know that many huge unsolved cases were not solved because of the heavy rain. But when I encountered such a case, I felt quite uncomfortable."

Jiang Yuan said "oh".

"Don't you understand?" Wang Zhong was a little disappointed. We are all technicians, so we should feel the same way.

Jiang Yuan drove the car, looked ahead, and said: "Understanding is understanding, but there is a sense of powerlessness, right?"

"Yes! Powerlessness, this sums it up well, it's like this, so, you still understand..."

"But today's case has not reached the level of powerlessness." Jiang Yuan interrupted Wang Zhong's wailing.

Wang Zhong sat up straight and asked, "Is there no one? Such heavy rain..."

"It's not raining in the store." Jiang Yuan glanced at Wang Zhong and said, "Isn't the store the focus of our on-site investigation?"

Wang Zhong was shocked when he heard that, yes, the focus of today's investigation is the store.

Wang Zhong hurriedly asked, "Did you get your fingerprints, or something?"

"I don't think there are any fingerprints. Go back and have a look." Jiang Yuan had several plans in his mind, but he didn't say them out.

Some things are too tiring to talk about empty-to-air, and if they are not done well, they will enter the debate session, so it is better to talk about them after they are done.

Wang Zhongxian became more active, parked the car with Jiang Yuan, and followed Jiang Yuan to the office.

As he approached the office building, Jiang Yuan turned a corner and entered the camp of the Police Dog Squadron.

Wang Zhong was surprised: "Do you want to use a dog?"

"Have you had lunch?" Jiang Yuan asked Wang Zhong back.

"Oh... oh, I forgot." Wang Zhong rubbed his head in embarrassment, and said, "Then let's eat first. Should we eat fried rice or buy it from the cafeteria?"

Jiang Yuandao: "Make it yourself and eat it with the dog. I promised Da Zhuang before."

Wang Zhongting's eyelids were wrinkled: "I understand the first sentence of the few words you said."

Just as he was talking, Da Zhuang rushed over with a chain on his back.

The sound of the iron chain being pulled instantly exploded in the ears of the policeman, which was even more sensitive than the sound of gunshots.Wang Zhong couldn't help but backed away, putting his hands in front of his chest.

Da Zhuang let out a "Wang", without even looking at Wang Zhong, he frantically wagged his tail at Jiang Yuan.The dog's face is full of expressions of cuteness to please, resentment to please, and ecstasy to please.

"Vegetables and meat are ready." Li Li also heard the movement, and rushed out of the kitchen, looked at Wang Zhong again, and asked, "One more?"

"Get some noodles, and make a little more juice when cooking. It's also delicious. Master and I can't eat too much." Jiang Yuan has mastered the LV5 dog rice skill, and he can make it very flexibly.

Wang Zhong was a little embarrassed, and said with a smile, "It's the same if I make some instant noodles."

"No need." Jiang Yuan waved his hand. When the LV5 dog meal is made, Wang Zhong will eat instant noodles next to him. Wouldn't it be worse than Da Zhuang?

Don't let him steal Da Zhuang's food and affect the growth and development of other police dogs.

"Then let me help." Wang Zhong once again expressed his willingness to be proactive.

At this time, Da Zhuangyan watched Wang Zhong about to touch the ingredients, and couldn't wait to "bark" out, and the dog chain suddenly rattled.

"Da Zhuang, sit down." Li Li shouted.

Da Zhuang sat at the door aggrieved, staring at Wang Zhong, with an expression of "try if you dare to touch me".

Wang Zhong swallowed, and quickly stood beside Li Li.

Li Li's expression was calm, her eyebrows drooped like a rottweiler, she patted Wang Zhong's shoulder skillfully, and said, "Stop making trouble, Da Zhuang won't let me interfere when Jiang Yuan is cooking. The dog is too big , I have my own ideas."

Wang Zhong laughed twice.

"Get me a mobile phone holder." On the other side, Jiang Yuan used his mobile phone to release the surveillance video of Xinfa Tobacco Hotel, and put it in front of the pot to play it in a loop.

Watching the video on the mobile phone is not very clear, but Jiang Yuan doesn't care much.

He can enhance the picture or a certain point in the video by reducing noise and collaborative filtering.

However, for Jiang Yuan now, what matters is not technology, but where it is applied.

In the video, the robber holds a sharp knife and wraps himself tightly in a hoodie, only showing a pair of eyes.Looking at it from beginning to end, even if I was panting tiredly, there was no intention of opening it.

For this kind of noise reduction and collaborative filtering, it is obviously useless.

If you want to see the face, you need perspective skills - this is obviously not allowed!
Instead, Jiang Yuan wants to use this method to remind himself where the enhancement is really needed.

The fatty meat is being stir-fried, the beef is being boiled, and the seafood is being steamed...

Jiang Yuan manipulated the ingredients step by step, watching Li Li and Da Zhuang salivate.

At the same time, in his mind, he has been considering all aspects of the video and sorting the questions he thought of.

He has many choices, not no clues.

Much of the information presented in the video can be explored.For example, the hoodie is likely to be purchased online. If the source can be confirmed, it is possible to find the suspect's information.

The suspect's shoes have also been exposed many times, and the sacks used to transport cigarettes back and forth can also be a direction of investigation. Of course, what Jiang Yuan paid the most attention to was the weapon in the suspect's hand!
A dagger half arm's length.

It can be seen that the blades were opened by themselves. Even so, it is not easy to buy two such long knives.

However, Jiang Yuan is not very sure whether the source can be determined.See the picture for details.

When the meal is ready, Jiang Yuan scoops out Da Zhuang's portion first, and subconsciously looks at Da Zhuang.

Da Zhuang immediately pouted, as if he wanted to laugh and show Jiang Yuan that he was smarter than everyone else.

(End of this chapter)