The Future of Movies (Part Two): Playing selfies on the big screen and occupying the movie circle through the Internet.

 
[Cinema] Going around for half a century: bigger, wider and more interactive.
    The popularity of this thing has always been a cycle and back to the original point. Fashion is like this, and so is movies.
 
  As early as the 1950s, the appearance of television brought an unprecedented crisis to American movies. The number of movie audiences dropped sharply from 4 billion in the 1940s to 2 billion in the 1950s, and cinemas closed down one after another. In addition, Hollywood is still experiencing the impact of McCarthy’s blacklist, more than 400 artists are excluded and social films are greatly reduced.
 
  Therefore, in order to tide over the difficulties, American movies began to start with technological innovation, and created "panoramic movies" with larger and wider pictures, as well as professional terms such as color movies, wide screens, three-dimensional movies, drive-in theaters and so on, which all sound so powerful nowadays. However, this did not stop the development of television. By the 1960s, 90% of American families had televisions, and the number of movie audiences had dropped to 1 billion. These movie projection devices in those years became a bitter memory in the history of movies after Sunset Boulevard was released.
 
  But today, half a century later, although the home theater system is designed more and more advanced, many people may still be too lazy to go out, but Hollywood projectionists finally know more about the "immersive" charm that the big screen can bring to the film. They not only pick up the panoramic technology again, but also have a more superb "holographic deck" this time — — The cinema of the future is not watching movies, nor walking into a movie (IMAX advertising words), but being in the middle of a movie.
 

 
Physical screening: it is no longer a dream to play "panoramic selfie" on the big screen.
 
  What we are talking about here is not 360-degree mobile phone camera software, but taking a selfie of the scenery shown in the cinema and on the big screen. Barco, which has been at the forefront of display technology, has created a brand-new movie viewing method of "Escape". In order to create a more comprehensive perspective and an immersive movie viewing experience, a screen is added on both sides of the main screen. This technology requires a large number of artists to draw computer three-dimensional animation for the film content extended to the next screen. In order to help complete this work, Barco also turned to the game industry for help and improved the screens on both sides with extra special effects rendering work.
 
  This technology will be used for the first time in the "Moving Maze" released in North America on September 19th this year. People are surrounded by three screens, as if they are in a movie and really participate in the crazy chase in the movie. Although there are only five cinemas with "Escape" in the United States at present, if this technology can be successful, it will inevitably change the production method of the film industry and pose a great threat to IMAX.
 
  If you want to see the panoramic solution, how can you interact with the big screen again An American company (Avatron Development USA) is building some new venues, which can use the recognition system to scan the audience’s facial expressions and movements onto a dome-shaped screen that can display 3D effects in 360 degrees during the movie viewing: "You can register before watching the movie, and when the recognition system scans your body and facial expressions, it will convert the information to the screen to interact with these movie characters." Joel hynek, the company’s visual effects technician, explained, "This is the closest we have come to holographic deck technology."
 
Note: Holodeck technology is a simulated reality system. Different from virtual reality system, this system exists in the real world. People can interact with objects in the system without glasses and tactile simulators. This technology is mainly responsible for the vision by the light and shadow system, and the nearby material generation system generates what people touch and see, which is a bit like the training ground in Machine Hunger Game. This technology first appeared in the sci-fi movie Star Trek, and now it has gradually matured in our real world.

 
Virtual reality: a private cinema that can be owned at home
 
  When we talked about holographic deck technology, we have to talk about Virtual reality in depth. It is no exaggeration to say that this technology is also a double-edged sword. If it continues to develop, it may pose a greater threat to cinemas than the Internet, or on the contrary, it may also bring more immersive experiences.
 
  The most eye-catching thing in this field is the Oculus Rift, which is launched by the start-up technology company (Oculus VR). With it, there is almost no concept of "screen", and people enter the virtual world. The new version of "Crescent Bay" launched by the company in September this year has been able to monitor the wearer’s movements in a 360-degree range within a 1.5-meter area. The wearer can walk, squat and watch from all angles, and the built-in demonstration characters can basically respond and reproduce each movement accurately, which will have an immersive seamless experience.
 
  In fact, the development of "Oculus Rift" has only been more than two years, but it has developed very rapidly. In the first half of this year, it was acquired by Facebook for $2 billion, which attracted much attention. At present, this technology is mainly used in the field of games, but the company has begun to pay more attention to the film industry and plans to build an Oculus Cinema.
 
  So, what is the effect of wearing this thing that looks like a ski goggles? To put it simply, when you watch a movie, it’s like sitting in a movie theater. You can choose your seat through the computer, and control yourself to go up and down the stairs of the movie theater to see the big screen and all the positions of the movie theater from various angles. At present, this technology is only in the demonstration stage, but imagine that if everyone can sit in the cinema with virtual equipment at home, chat with the people next to them or interact with the creative artists on the stage, then it seems less important to really climb to the cinema at a certain time through the heavy traffic and mountains — — This is so cool, just like owning a cinema!
 
  At the same time, virtual reality technology can also build a bridge between games and movies. Games pay attention to interaction and ignore good plots, but movies are more attractive in story. If this technology can be more mature, I believe even the content of film production will be more different. In this regard, although Hollywood is still in the wait-and-see stage, like the 21st century, FOSS has been looking for the possibility of combining this technology with mainstream blockbusters, and the legendary film company, which moves faster, brought a stunning experience of driving the robot Jaeger in the Pacific Rim at Comic-con this summer — — We can be sure that increasing interactive and immersive experience will be the future goal of watching movies in the "cinema".

Junior high school graduation examination and senior high school entrance examination "two tests in one"

When will the junior high school proficiency test be implemented?
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How to define the grade of junior high school level examination?
How to arrange the examination time of junior high school academic level?
What are the subjects of the junior high school level examination?
How to register for the junior high school level examination?
How to apply the results of junior high school academic level examination to junior high school graduation?
How to apply the results of junior high school academic level examination to the admission of middle school students?

GB 2760-2024 was released heavily, and the regulations on the use of food additives in some food categories changed.

  message On March 12th, the website of the National Health Commission publicly released 47 national safety standards and 6 amendments, including Usage (GB 2760-2024). The 2014 version of GB 2760 will be officially replaced by the 2024 version of GB 2760 on February 8th, 2025. In view of the fact that the use of food additives directly affects the compliance of enterprise products, Food Partner Network has sorted out the main changes in the use of food additives in some food categories, involving the use in food, the requirements for the total amount of common use in the same food category, the restrictions on the use of sodium salts, and the restrictions on the use, etc., for industry reference.

  These preservatives can’t be used in canned food.
 
  According to the survey of canned food industry, referring to the relevant canned food product standards, that is, canned food has been pasteurized, the new version GB 2760 deleted the provisions on the use of food additives for canned food with the only function as preservative and the first function as preservative. The specific usage provisions of preservatives deleted in the new version of GB 2760 mainly include:
 
  (1) Delete canned fruits, canned vegetables, canned nuts and seeds ε -Provisions on the use of polylysine hydrochloride;
 
  (2) Nisin, ε -Provisions on the use of polylysine hydrochloride;
 
  (3) Delete ε -Provisions on the use of polylysine hydrochloride, nisin, sodium diacetate (also known as sodium diacetate), sorbic acid and its potassium salt, dehydroacetic acid and its sodium salt (also known as dehydroacetic acid and its sodium salt);
 
  (4) The regulations on the use of stable chlorine dioxide in canned aquatic products have been deleted.
 
  The new version of GB 2760 has added the total requirements when these sweeteners are used together.
 
  In the new GB 2760, the total amount of aspartame, acesulfame K and aspartame methyl acetylsulfamic acid used together in the same food category was increased. The specific provisions are as follows:
 
  (1) Aspartame (also known as aspartame): If aspartame acetylsulfamic acid is allowed to be used in food categories at the same time (the maximum dosage can be converted into aspartame by multiplying it by 0.64), when mixed, the maximum dosage cannot exceed the maximum dosage of aspartame specified in the standard.
 
  (2) Aspartame Acetylsulfamic Acid: If aspartame or acesulfame K are allowed to be used in food categories at the same time, the maximum dosage of aspartame or acesulfame K in mixed use cannot exceed the maximum dosage of aspartame or acesulfame K specified in the standard (the maximum dosage of aspartame Acetylsulfamic Acid multiplied by 0.64 can be converted into aspartame, and the maximum dosage multiplied by 0.44 can be converted into acesulfame K).
 
  Delete the use of dehydroacetic acid and its sodium salt in 7 kinds of foods such as cakes.
 
  According to the food safety risk assessment results of the food additive sodium dehydroacetate organized by the Food Assessment Center, combined with the investigation of the use of sodium dehydroacetate in related industries, the new version GB 2760 deleted the regulations on the use of dehydroacetic acid and its sodium salt in butter and concentrated butter, starch products, bread, cakes, baked food fillings, surface hanging pulp, prefabricated meat products, fruit and vegetable juice (pulp), and adjusted the maximum dosage of the food additive in pickled vegetables from 1.0g/kg to 0.

 
  Limit the application range of processing aid hydrogen peroxide
 
  Based on the latest evaluation results of safety and process necessity, combined with the actual use situation of the industry, the specific functions and application scope of hydrogen peroxide as a processing aid were clarified. The processing aid hydrogen peroxide was adjusted from the List of Processing Aids that can be used in various food processing processes and the residue is not limited to the List of Processing Aids that need to be specified in functions and application scope, and the processing aid hydrogen peroxide was specified as a desulfurizer, decolorizer and deiodifier, which can be used in starch sugar and starch processing technology, oil and fat.
 
  Some provisions on the use of food additives have no technological necessity and are deleted.
 
  According to the investigation of beverage industry and the principle that the use of food additives should have technological necessity, the regulations on the use of natamycin in fruit and vegetable juice were deleted.
 
  With the improvement of production technology, taking into account the principle of technological necessity, the β -Regulations on the use of mono-and diglycerides of carotene and diacetyl tartaric acid, and the regulations on the use of azoformamide in wheat flour were deleted.
 
  Based on the principle of process necessity, the processing aid &beta is deleted; -Provisions on the use of cyclodextrins in pasteurized milk and sterilized milk.
 
  summarize
 
  According to "Food safety lawThe implementation regulations stipulate that after the food safety standards are published, food producers and operators can implement them before the implementation date stipulated by the food safety standards. Although the 2024 version of GB 2760 has a transition period of nearly one year, considering that the adjustment of food formula will take time, some revisions will also involve the replacement of labels. It is recommended that enterprises involved in the above revisions review and adjust the formulas and labels in time to ensure the smooth passage of the old and new standards and ensure the compliance of production and operation.