Chapter 75: Short Knife

Forensic office.

The pine trees outside the window were washed green by the rain, looking like the male parts that had just been circumcised, tender, moist, and fleshy.

The small spider plant inside the window grew a bit bigger, and a few drooping leaves covered the cigarette butts in the flowerpot, looking quite oily and bright.

Wu Jun and Jiang Yuan entered the office together, and the first thing was to open the window, stand in front of the spider plant, and say: "Smoke a cigarette."

Jiang Yuan's desk was against the wind, and it wasn't affected, so he gave an "En," turned on the computer, opened the software, and waited for the comparison.

Just after obtaining the image enhancement skill, Jiang Yuan also tried to use it, but there was no suitable case, and it was never used.

Copying the surveillance video just watched into the computer, Jiang Yuan pulled directly to the middle link, and started to make a close-up of the robber's short knife.

Perhaps to intimidate the victim, the two robbers responsible for moving kept taking the knives out and shaking them in the air. This gave Jiang Yuan a lot of room for choice.

Image enhancement technology, as far as it was currently concerned, was mainly two technical routes.

One was spatial domain image enhancement, which was the most direct and also the most "natural" enhancement method. Simply put, it was enhancing pixels.

When the number of pixels on an image increased, the image was naturally enhanced. The most commonly used was histogram processing, which could be understood as an automatic pixel-adding method based on probability theory. Of course, specifically speaking, there were technical concepts such as gray-level histogram, gray-level point operation, histogram transformation, histogram equalization, etc.

Besides this, basic gray-level transformation, smoothing spatial filtering, sharpening spatial filtering, etc., were also technical solutions on the same level as histogram processing.

As for the other technical solution, it was the frequency domain enhancement method, which was an operation of filtering and enhancement after treating the image as a two-dimensional signal and then transforming it into the frequency domain, involving famous Fourier transform, Walsh-Hadamard transform, cosine transform, wavelet transform, etc.

These technologies, Jiang Yuan viewed them as heavenly books when he didn't understand them, and after he understood them, the computer... viewed them as heavenly books.

The old office computer had never thought that it would eventually bear everything.

It roared, howled, and trembled wildly with all its might. Under the impact of massive data and the bombardment of constantly changing technical means, the once arrogant aura became weak, the once clear screen became flickering, and the once icy body became scorching hot.

"You need to add another computer here to be suitable." Wang Zhong looked at the computer that entered a semi-dead state after producing a little result, and couldn't help but shake his head.

"Can't add a new computer. I heard from Wei Yin that they have to sign several times just to buy printing paper for internal affairs." Jiang Yuan said.

"Adding new equipment is definitely difficult, but as long as you can solve a few cases... Um, you and Wei Yin still have private contact?" Wang Zhong felt unbelievable.

Jiang Yuan looked at him strangely and said: "No private contact, just sending WeChat messages."

"You two send WeChat messages privately?" Wang Zhong was shocked.

Jiang Yuan waved his hand: "Just chatting occasionally. Can you add new equipment if you solve a case?"

Wang Zhong was diverted by Jiang Yuan's words and said: "It depends on how you say it. If you say, give me a new computer, I can solve three unsolved cases, Captain Huang will definitely buy it for you happily..."

"That depends on what kind of three cases." Huang Qiangmin's voice came from the other side of the office.

Wang Zhong, who had his back to the office door, only felt his calves go numb, turned around with difficulty, and said in a low voice: "Captain Huang, I was just... I thought..."

"It's okay, as long as the case is solved, happily, I don't care." Huang Qiangmin's mouth smiled into 44.4 degrees, looking like a cute little crocodile, tilting his head to look at Wang Zhong, and asked: "However, it must be three major cases, oh."

"Yes... that's what it means..." Wang Zhong smiled as if he had just been exploded by a beauty, not knowing whether to laugh or cry.

"Is there any progress in the case?" Huang Qiangmin looked at Jiang Yuan again, and the smile at the corners of his mouth automatically rose to 66.6 degrees.

He didn't use to come to the fourth floor where the Criminal Science Squadron was located. It was just an auxiliary squadron, and for the captain of the Criminal Police Detachment, he had too many squadrons and businesses to care about. Even Dazhuang of the Police Dog Squadron, the captain had to go and see from time to time.

After Jiang Yuan came, Huang Qiangmin's attitude obviously changed.

For Huang Qiangmin, people who could solve cases directly were different existences.

Why were the Second Squadron and First Squadron more valued? It was nothing more than that they could solve cases, could solve major cases, and could attack!

Now, Jiang Yuan could also solve cases, could solve major cases, and could attack, so Huang Qiangmin naturally had to come and see from time to time. In a unit like the Criminal Police Detachment, the material rewards that could be given were actually very few, and it wasn't suitable to use material rewards to win people over. This was a truth Huang Qiangmin understood very early.

Otherwise, if it was really about money and income, there were professional fingerprint outsourcing companies in society now. If a cow-brained fingerprint expert who wanted to make money went in, they could charge by the piece, easily earning millions a year.

Therefore, Huang Qiangmin now paid more attention to doing massage for Jiang Yuan from the spiritual aspect.

"Running, can't run out." Jiang Yuan pouted, pointing to the computer with blurred screen and soaring heat.

Wu Jun said on the side: "It's been half an hour, and my ears are not working."

Huang Qiangmin asked: "What exactly are you doing?"

"Image enhancement. The surveillance video copied back isn't clear enough. I want to see the details of this knife. I think the pattern on this position of the knife handle, if it's clearer, maybe I can search for similar pictures. Maybe I can find the source of the knife handle." Jiang Yuan opened his phone, enlarged the image inside, and showed it to Huang Qiangmin.

Huang Qiangmin understood, and his eyes changed again.

Not to mention whether the case could be solved, he was also extremely interested in this thing called image enhancement.

"Where did you learn image enhancement?" Huang Qiangmin was half curious and half happy.

"Learned it casually in school." Jiang Yuan answered very reluctantly.

Huang Qiangmin could only believe it, and couldn't help but sigh: "Young people nowadays are amazing. When recruiting new people this year, I have to look more... How long will it run?"

"Almost there." Jiang Yuan pointed to the progress bar, which was already 99%.

10 minutes later.

The progress bar was all red, and an image was displayed.

On the knife handle, there was clearly a row of dark flowers with characteristics. The flower stems were intertwined, stretching out eight claws.

"I'll search." Jiang Yuan said and opened Baidu, and pulled the picture in. ===== CHAPTER 76 =====