After watching and watching at the table with the children, Tang Jiayi finally had a relatively complete understanding of this holographic display.

If you look closely, you will see that the crystal ball hides an octahedron-like structure inside, which reminds her of the holographic box that was once popular.

Two years ago, the Japanese toy manufacturer Bandai once launched a toy called ハコビジョン (box dream), after the assembly is completed, scan the QR code with your mobile phone, you can see its own Gundam and Hatsune Miku's pseudo-holographic MV, very much from the steel egg powder and Miku powder circle a sum of money.

The toy uses a low-cost pseudo-holographic display technology, in which a flat thin glass or transparent plastic is placed obliquely inside a box with a window on the top of the front side, and then the mobile phone screen is buckled to the top of the box to play a video, because the relationship between the tilted sheet reflects the image and transmits ambient light, creating a Peppersghost illusion that people are seeing a floating image.

In 1862, John Henry Pepper of the Royal Institute of London collaborated with engineer Henry Dirks to create a haunting effect for Dickens's play The HauntedMan, using mirror reflection projection, a technique that bears his name.

After more than 100 years of development, the technology was used by magicians to perform makeovers, Disney to build haunted houses, and holographic shows used by fashion designers, artists, and pop singers.

Of course, the projection film and supporting projection equipment used by professionals have better effects and higher prices,Far from a few pieces of plastic film and mobile phone screens can be completely simulated,Holographic box or something can only be said to be fresh。 So although there was an upgraded version of cutting the projection film into triangles, splicing four pieces into a hollow pyramid, and changing from single-sided visibility to four-sided visualization, this kind of holographic box quickly lost popularity and no one paid attention to it.

In particular, in order to express the three-dimensional effect, the original 3D stereoscopic image must be converted into a flat image of the front, back, left and right, and then stitched together into a cross-shaped video at the head, which brings a lot of transcoding costs. In addition to Miku fans converting various MMD videos into holographic videos for true love, that is, Bee Games is still insisting on pushing corresponding holographic videos for its own virtual characters.

It is also for this reason that the "mobile phone small theater" holographic box sold by "Bee Department Store" still has some sales, and bees have also accumulated some experience and technology in playing pseudo-holograms.

Obviously, the crystal ball that Tang Jiayi saw today is the culmination of it.

"This thing can't be an upgraded version of your phone box, right?"

"Yes and no. ”

Atletico stretched out his hand and pulled her aside to sit down, and then whispered: "The fun department has indeed studied the upgraded version of the small theater, but the cost is too expensive after the prototype is made, and the person in charge feels that it may not be able to sell and cut the project, which I later redid with their technology." ”

"By the way, how the hell did you do that? I'm talking about where you hid the screen?"

"Hehe, the Buddha said you can't say it, you can't say it," Atletico laughed and sold a pass.

"Don't say it, I won't ask. ”

"Ahem, ahem, ahem!" someone's smug expression froze on his face.

Tang Jiayi gestured with a V-shaped scissor hand, "Are you sure you didn't remember this stubble just because you saw my Hol last month and then did this?"

"yes. ”

Atletico Madrid frankly admitted that Tang Jiayi was as uncomfortable as smelling durian.

Hol is a virtual display case that was launched on Kickstarter last year, which can be seen as an enlarged version of the Hatsune box, a microwave-like transparent box with a transparent pyramid embedded in it, and the image generated by the projection module at the top of the lid is projected downwards and reflected into the human eye by the inclined transparent glass plate, forming a translucent floating image, and finally giving people the illusion of a holographic effect in the pyramid.

If it weren't for the sudden receipt of an international parcel from Canada last month, Tang Jiayi would have forgotten that she had supported more than 1,000 Canadian dollars on a whim last year.

As for the effect of the product, she can only say that she is a little disappointed, the picture effect is not as eye-catching and beautiful as demonstrated on the official video, plus the official promised character library and third-party content are very limited, and it was shelved after playing for a while.

"My photo crystal is indeed borrowed from Hol's creativity, but the implementation method is very different, so it is not plagiarism. ”

"First of all, my crystal is very beautiful, right? The crystal ball on the top is crystal clear, and the base below is also made of special ceramic, hard and shiny, and it looks better than the plastic box. ”

Tang Jiayi nodded: "It's very beautiful, especially this magnetic levitation design, it doesn't cost less, right?"

"Well, what I call it, anyway, it's self-made, don't care about these details!"

"In addition to the four of them, how many CG roles did you make?"

"Hehe, you can see everything?"

"Isn't that nonsense? Only those four little fools would think it was their image and look for the camera everywhere. ”

"There are still cameras," Atletico said, "but not to capture images of people, but to capture skeletal movements and synchronize them to the character model, as well as the cameras that are used to identify those who are close to them." ”

"What do you mean? Whoever comes up to you will show their CG image?"

Seeing Atletico nodding, Tang Jiayi frowned: "But I was so close just now, why didn't I show me?"

"Ahem," Atletico pretended to look around, then motioned to the other party to come over, lowered his voice and said in a voice as thin as a mosquito and a fly: "Your CG model has been made, but the clothes library has not yet been prepared, and there are only default vest shorts on your body, and it was intercepted by Blue Dam just after it was displayed." If you want to see it, I'll show it to you when I get back to my room. ”

"And how many did you do?"

"Hehe, no more, no more, I made about twenty of them, and this time I brought eight of them. ”

"Handmade assembly, you are so idle!"

"Average," Atletico said, standing up, walking briskly towards Little Zhizhi and holding her small hand.

It turned out that the mischief team leader was not satisfied with watching the ball on his stomach, and planned to try some more exciting projects.

"Little Zhizhi, why did you drop it?" asked Atletico as he bent over and looked at his eldest daughter.

"I don't want to be in there anymore, my legs are gone," said the child with an apple braid on her head.

"I'm too, so don't live here!" the two little boys also shouted to express their opinions.

"Ma Zhizhi, isn't your leg good here?"

"And the two of you, it's just your shadows, photos, and videos, not you!"

"Snort!" I don't know when Tang Jiayi has come to Atletico Madrid's side and is looking at him condescendingly.

"What are you laughing at?

After speaking, Atletico moved to Xiao Tiantian, who had not spoken, "Or we are the most well-behaved, don't you say?"

After hearing her father's praise, the little daughter raised her little head, stretched out her white and tender little finger to point at the crystal ball, and asked, "Why does the ball turn like this?

Although the expression is a little unclear, the basic meaning can still be understood, and she asks why the crystal ball rotates clockwise, not counterclockwise.

Atletico Madrid couldn't help but hesitate when he heard this, allowing him to collect millions of books, but it was also a little difficult to answer when he encountered such a "100,000 whys".

There were too many answers and too long to know where to start, and finally he had to say vaguely, "Dad thinks this turn looks good, if you don't like it, you can also let it turn the other way around, just press it like this." ”

Fooling around this complicated issue, Atletico turned his head to look at the three little ones on the other side, and found that Tang Jiayi was changing clothes for their avatars with her mobile phone, and the little ones kept shouting "I want this!

I can't stop the ball, but no one mentions it.

In fact, as a sign of a "prodigy", the four elementary schools of the Ma family passed the mirror test very early, and they can recognize themselves in the mirror, photos, and videos, and they also know that they are different from themselves in those media. When Zhizhi said that just now, it was more like mischief, and they wanted to deliberately pretend to be ignorant.

In 1970, 29-year-old Ph.D. Gordon Gallup Jr. designed an animal experiment based on his predecessors, and thus established his position in the field of cognitive psychology.

The experiment was not complicated, two empty rooms, two large mirrors, some odorless paint, the subjects were two chimpanzees, one male and one female, all they needed to do was to anesthetize the chimpanzees, put paint marks on their faces and put them in a room alone, and then observe their reaction to themselves in the mirror after they wake up.

It was found that chimpanzees were able to associate with the paint on their faces based on the images in the mirror, proving that they had a self-awareness of their own image in the mirror and knew that they were in the mirror.

That's why this experiment is also called the Mirror Test, or the Mirror Self-Recognition Test.

Because the mirror test is simple, intuitive and repeatable, after Gallup published the test, many biologists and psychologists joined in to conduct mirror tests on other animals, especially the more intelligent ones, and found some interesting results.

First of all, cats and dogs can't pass the MSR, they will think of themselves in the mirror as if they were other of their kind, and bared their paws and teeth.

In the movie "Garfield 2 Two Cats", there is a plot of Garfield "looking in the mirror", which is the interpretation of this behavioral image. Of course, what Garfield saw in the film was actually a noble cat named "Prince XII", but their reaction at the time was obviously from the real reaction of ordinary cats when facing the mirror, but with some exaggerated and funny elements.

Secondly, in the mirror test survey of primates, scientists found that all kinds of orangutans and macaques can pass the test, and many people are relieved that self-awareness is the privilege of my primates.

However, everyone was happy too soon.

Then, as the scope of the test expanded, some embarrassing results appeared, the dolphin passed the test and comforted itself that it deserved to be the most famous marine animal, the European magpie passed the test when the supporters were immediately speechless, and then even the cartilaginous manta ray passed the test, and everyone was speechless to ask the sky.

Manta rays are primitive fish with a flat body that resembles a diamond-shaped kite and are passengers in aquariums around the world because of their striking appearance. Because manta rays were found to often roam around underwater passages, an underwater version of the mirror test was devised to prove that they are also self-aware.

In fact, more than 40 years after it was proposed, the mirror test has received increasing criticism, with some zoologists questioning that the experiment relied too much on vision and was unfair to olfactory animals such as cats and dogs. There are also many people who report that pigeons, pigs and other animals can pass the test after training, or at least know how to use a mirror to observe the environment behind them.

As for the cat slave who said that "my cat thief is smart, never scratches the mirror, and will look at me in the mirror" and other sayings are countless.

This is also the limitation of the mirror test, which is too simplistic to exclude the variable "experience". For example, many cats will explode when they see the mirror for the first time, and when they find that the cat inside can't threaten themselves and can't hurt each other, they will slowly become calm.

Regardless, the mirror test is very meaningful, for example, it can be used to measure the cognitive development of human young children.

Newborn babies have underdeveloped eyes and very bad vision, and as they grow up, they begin to open their eyes to see the world, and then scientists find that half-year-old babies can already react to images in the mirror, and when they are older, they will pat the mirror excitedly.

It's just that babies at this stage actually greet themselves in the mirror as other children, and usually until they are 18 to 24 months old, the baby can recognize the little person inside as himself, so as to successfully pass the mirror test.

The French psychoanalyst Jaques Lacan noticed this phenomenon early on, and in 1936 proposed the mirror theory, using psychoanalytic methods to explain the process of self-perception formation in the mirror stage between 6 and 18 months of age.

It's just that in the face of the big black box of the human brain, his theory, like other psychological theories, seems to be relatively "mysterious", lacking rigorous mathematical deductions and real experimental evidence, and the persuasiveness is much worse after all.

However, it is not easy to make up for this link, not to mention the ethical difficulties of children's experiments, just developing special equipment and allowing children to cooperate with the experiments are two troublesome things.

These technical problems are not a problem for Atletico, and he did it, but the result is still confused, and he has extinguished the desire to publish a paper to make a name for himself.