civil forensic

Chapter 12 Rottweiler

The police dog of the Police Dog Squadron of the Ningtai County Criminal Police Brigade is called Da Zhuang, a four-year-old Rottweiler with a strong physique, a square face and a bald face. The average daily food standard is 45 yuan.

Compared with the police dog Heizi in Longli County next door, Da Zhuang is younger, more handsome, and stronger.But it is precisely because of its youth that it does not have a medal of merit on its chest, and there is no joint construction project between the police and the people behind it. Therefore, its daily food expenses are 30 yuan less than that of Heizi.

Da Zhuang didn't know this, so his mood was still very stable. When he saw someone coming, he still had pure happiness in his eyes, and his tail fluttered lightly.

"Da Zhuang, sit down." The trainer probably felt that the police dog wagging his tail was a bit embarrassing, so he came from the other side of the wall and yelled loudly.

Jiang Yuan followed the voice and saw a tall policewoman with long and slender side legs, a slender waist and straight back, just turned around.

At that moment... Jiang Yuan felt that her face resembled a Rottweiler.

The face is square, the eyebrows are straight, the ears are floppy, the almond-shaped eyes are slightly black and brown, and they seem to have a sad expression.

"Li Li, let me borrow your kitchen to make fried rice. Do you have rice and eggs?" Wu Jun greeted him bluntly, introduced Jiang Yuan by the way, and said, "My apprentice, the fried rice is quite delicious. "

Li Li nodded politely to Jiang Yuan, and then said: "You pick up a few eggs from Da Zhuang's basket first, and there is also meat in it. I will ask the food delivery person to make up for it in the afternoon."

Da Zhuang sat up straighter when he heard his name.

This is not the first time Wu Jun came to Ceng Da Zhuang, he responded with a smile, and asked again: "Have you eaten yet? Have fried rice together?"

"Okay." Policewoman Li Li responded readily, and said, "It's just right, I'll spare some time to cook for Da Zhuang."

The three of them then talked and entered the kitchen of the Police Dog Squadron.

In terms of basic construction alone, the conditions of the police dog squadron are worse than that of the criminal police team. The police dog training site is hardened land, and the surrounding courtyard walls are also the simplest red brick cement. Depending on the craftsmanship, it may be a dog police. The staff did it themselves.

The independent kitchen of the Police Dog Squadron is just two bungalows.It may be dated back to the eighties and 90s when it was built.It can only be said that Ningtai County, a small county under a prefecture-level city, has not achieved much in terms of competing for the dividends of the era.

The equipment in the kitchen is complete, especially a large pot with a strong stove, which looks quite professional, but Li Li pointed to the ordinary small stove next to it, and said: "You use that one, over here It's for Da Zhuang. How much meat should you cut?"

"No meat. I know how to make vegetarian fried rice." Jiang Yuan said, "Eggs, rice, a little green onion and oil are enough. Do you want to make more for the police dogs?"

"No need. Your fried rice is too nutritious to feed dogs."

As Li Li spoke, she took out the ingredients from the refrigerator, gave some of the rice to Jiang Yuan, and threw all the pig's trotters into the dog rice bowl; gave some of the eggs to Jiang Yuan, and threw all the chicken chops into the dog rice bowl; Throw all the chopped carrots, broccoli, and cabbage into the dog rice bowl...

The food standard of 45 yuan for police dogs is pure food expenses, just like the food standard of 75 yuan for the meritorious dog Heizi and the 19.3 yuan standard for recruits. and labor costs.So it will be enough to eat.

Under the benchmark, Uncle Seventeen’s fried rice with eggs costs 1.2 yuan per pound of rice for three servings; half an egg costs 0.5 yuan; vegetable oil and spring onions add seasonings, etc., and 0.8 yuan is enough—calculated in this way, The total cost of the meal for Jiang Yuan and others was 2.5 yuan, and the per capita food cost was about 0.8 yuan...

But Uncle Seventeen's LV3 egg fried rice skills still make this meal look delicious.

In contrast, Li Li's cooking skills are probably not even in LV1. This point can be guessed from the way Da Zhuang eats while sniffing, and Li Li's state of gobbling.

"Come here often when you're free." Li Li ate a few mouthfuls and drank half a glass of water in one gulp, then patted her chest and said to Wu Jun: "Captain Wu, you recruited a talent this time, and this is the person who does things. Can you borrow it from our squadron? Look at Da Zhuang, other dogs are rushing to eat, and he can't wait to be left behind..."

"I don't care about employing people." Wu Jun smiled and shied away, quickly finished the fried rice, got up to pick his teeth, and said, "We still have work in the afternoon, and I leave the dishes and chopsticks to you to clean up."

Wu Jun, who was full of food and drink, called Shang Jiangyuan and left, moving skillfully like a regular customer in the alley of Sanlipu.

Jiang Yuan looked back at Da Zhuang, and saw him eating the 45 yuan in the basin with a calm expression.Not fast, not slow, with a calm expression like a car that is fueling itself.

"The police dog trained by the policewoman is called Da Zhuang, which is a bit strange." Jiang Yuan chatted as he walked.

Wu Jun smiled and said: "It should be the name given by her previous trainer. They also said at the beginning that the first dog was called Da Zhuang, and the second was called Er Zhuang. They kept barking all the way, neatly. "

"Where is Er Zhuang? Are you out on duty?"

"If a dog is brought in, the plan will stop." Wu Jun curled his lips and said, "What Team Yellow means is that dogs are too expensive, and one dog is enough. For the remaining money, it is better to hire a few auxiliary police officers."

Jiang Yuan thought for a while and nodded in agreement.

noon.

Jiang Yuan slept on his stomach for half an hour, got up again, opened the fingerprint of the intentional injury case suggested by Xiao Wang in the morning, put it in a big picture, and looked at it seriously.

The suspect left four consecutive fingerprints with different clarity and completeness. The first thing to consider is which fingerprint to focus on.

In terms of integrity, the little finger should have the highest integrity, but it also has the highest probability of not being matched.Because the probability of fingerprint sampling to the little finger is the lowest, many places apply for temporary residence permits and the like, they use the thumb or index finger, and the same is true for fingerprint punching and so on.

Relatively speaking, the integrity of the index finger is the lowest among the four fingerprints left by the suspect. Moreover, the extension is very wide and the deformation is the most serious.

Jiang Yuan pondered for a while, enlarged the image of his index finger, and began to study it.

The difficulty of marking the fingerprint of the little finger is relatively low. Of course, because the images are taken in sections from the cylinder, it may still be impossible to do it at the level of Lao Yan and Xiao Wang, but since they participated in the fingerprint battle a few years ago, then It should still be tagged correctly.

Therefore, the main reason why the little finger cannot be compared is more likely that there is no match in the fingerprint database.And this situation cannot be compensated by technology.

Most likely because of the technology itself, the fingerprint that was never matched was the fingerprint of the index finger.

This fingerprint is very severely deformed. It is conceivable that when the suspect hit someone with it, his grip must have been so strong that some of the fingerprint papillae of his fingers were squeezed together, and some of them were separated. It's like a winding mountain road, which is flattened by a giant's foot.

Jiang Yuan still opened Photoshop, and tried to use Photoshop-CS5 to do "edit-transform".

This step seems to restore the winding road to its original spacing and size on the plane.

Jiang Yuan first fine-tuned the left and right to the center by 5%, felt that it was not enough, then adjusted it to 10%, then 20%, and then fine-tuned it back a little...

There are no specific templates for these operations. If there is any reference, the distance between the baseline ridges of ordinary people’s fingerprints is 0.52mm. When the unit is fine-tuned by 1%, a number representing the average value is really meaningless.

On the other hand, because the fingerprints are taken in sections, and the technology of the current survey police is not very strong, so there seems to be problems with the shooting angles of different photos. It is obvious that the synchronization is not enough.

Various factors intersected, so Jiang Yuan tried many times, but he failed.

When he was about to get off work, Xiao Wang ran over again, approached Jiang Yuan mysteriously, and said in a low voice: "I checked, and this case has participated in three fingerprint battles, but there was no result."

"In the province?" Jiang Yuan paused the mouse.

"The first time was in the province, and the next two times were in the city." Xiao Wang paused for a moment, then smiled again: "The first time was in the era of horseshoe mirrors, and there was no automatic fingerprint system. The second time, there will be one." , with the same result."

The horseshoe mirror is a hand-held magnifying glass, the main part of which is similar to a microscope lens, and needs to be viewed with the eye against one end of the eyepiece.Traditionally, it has been used for fingerprint matching, document inspection and even physical evidence search, etc. It can also be used with a camera to take pictures and extract fingerprints.Before the emergence of automated fingerprint recognition technology, the horseshoe mirror was the most powerful weapon in the hands of trace inspection.

Xiao Wang's so-called horseshoe mirror era refers to the time before automatic fingerprint recognition technology became popular. In the fingerprint battle at that time, fingerprint experts were no longer primates with sparse hair sitting in front of the computer, but a group of A hairless primate holding a horseshoe mirror and a fingerprint chip in the other.

The matching of fingerprints also relies on rich experience and memory.

Jiang Yuan nodded slightly after listening to Xiao Wang's words.From his understanding, the current case is a case that has received relative attention, but has not received top-level attention.As for serious injury cases to this extent, there are more than ten years of accumulated cases. With this level of criminal investigation resources, it is basically over.

"I'll run it again." Jiang Yuan edited the feature points of the fingerprint he had just adjusted, and then threw it to the automatic fingerprint recognition system to run.

Soon, a row of candidate fingerprints is listed on the right side of the screen.

Jiang Yuan and Xiao Wang looked at the 20 candidate fingerprints listed from top to bottom, and it was no surprise that they were only disappointed.

"It's just a matter of luck. Even if you win the competition, you won't be ahead." Xiao Wang's technical ability is average, but he has some foresight.

Jiang Yuan agreed: "Indeed, with such a large adjustment range, the order given by the system is of little reference value. The fingerprints ranked 50 may also be the fingerprints of the suspect..."

"If it doesn't work, forget it. I'll look for other cases later." Xiao Wang sighed, and walked back as he spoke.

Jiang Yuan held the mouse and moved it to the right. After thinking for a while, he directly set the number of fingerprints on the candidate inspection list to 150.

In this way, the number of matching fingerprints given by the system each time will be more than seven times the original number, and the closer the fingerprints are to the back of the list, the lower the probability of matching.

Jiang Yuan was not in a hurry at first, and after making a decision, he looked at the fingerprints with peace of mind.

After a while, a translucent system prompt appeared in the field of vision——

Task: Compete in Liu Yu's injury case and assist in the detection of the case.

Task content: The victim needs to be comforted, the perpetrator needs to be punished, and both parties need peace of mind.help them.

Jiang Yuan couldn't help being amused, he was going to put down this intentional injury case, but now with the system bonus, he can hold his breath even more.

(End of this chapter)