Laser on-site engraving
At the opening ceremony of the Winter Olympic Games, the most eye-catching thing is the "Yellow River water" pouring down and rolling in. Then the river slowly froze and became an ice world. A huge water rose from the ice and solidified into ice. The history of the host cities of the past 23 Winter Olympic Games flashed back to it, and finally became "2022 Beijing, China".
Players interact with video hockey. After the ice hockey hit repeatedly in the video space, the five rings of ice and snow broke through the ice, which was dazzling, and the audience applauded. The creativity of this program can be said to amaze the world.
Many people are curious about how this is achieved. The black technology used in this is laser engraving.
What is laser engraving technology
Literally, laser refers to the amplification of light by stimulated radiation. When a beam of light passes through an object, stimulated radiation can occur under certain special conditions, and the emitted light is identical to the incident light. This process is like amplifying the incident light through a light cloning machine. Because of its unique optical characteristics, laser is also known as "the brightest light", "the most accurate ruler" and "the fastest knife".
As one of the major inventions of mankind in the 20th century, laser has been integrated into all aspects of economic society. Light has been widely used in optical fiber communication, beauty, printing, ophthalmic surgery, weapons, ranging and other fields.
Laser engraving is based on CNC technology and laser is the processing medium. The physical denaturation of the melting and vaporization of the processed materials under the irradiation of laser engraving can make the laser engraving achieve the purpose of processing. Laser engraving technology began in the 1960s. The first generation of Co2 laser engraving machine actually uses laser as the magnifying ruler of the light pen, and controls the work of the light pen by stepping on the switch with one foot, which can be used to copy calligraphy, engrave images and portraits. The laser engraves an image similar to the original on the work piece. This is a simple and original Co2 laser engraving machine with low cost.
After 60 years of development, laser engraving technology has been able to read stereo images and large images, and store and process information of multiple images.
How hard is it to break the ice and snow rings of the Winter Olympics?
Laser engraving is not difficult to achieve. The difficulty of the Winter Olympic Games project lies in: first, how to achieve the water flow image on the screen; Secondly, in order to perfectly display the images of previous Winter Olympics and ice and snow sports events on the ice cube, it is necessary to convert all the images of the moving figure into the point data required by the laser machine;
Then it is necessary to "learn" a large number of traditional Chinese ink and wash paintings through the machine, establish the ink and wash texture feature model, and then generate stylized landscape images, and then convert the 3D animation into the point data required by the laser machine to achieve the ink and wash image in "The Water of the Yellow River Comes from the Sky".
In order to perfectly display the images of previous Winter Olympics and ice and snow sports on the ice cube, it is necessary to convert all the images of the moving human into the point data required by the laser machine. To this end, we must convert tens of thousands of images to be displayed at the IceCube laser point into digital information.
The Olympic rings broke the ice and even made a 360-degree digital device. From the water cube to the ice cube, the crystal clear Olympic rings were chiseled out with 24 "laser cutters" around the whole stadium.
Of course, these are not laser engraving technologies that can be achieved unilaterally. This also requires the assistance of the Bird's Nest ground screen. This LED screen on the Bird's Nest site is the largest ground screen in the world. The ground interactive projection is different from the ordinary projection screen. The ground interactive projection needs video effect software, projector, core control software and sensors to achieve. The shadow instrument projects the picture on the ground. When people walk through the projection area, the ground image will change. The projector and infrared sensing module capture the action of the experimenter through the capture device, and then interact with the ground through the interaction system.
The Olympic rings broke the ice and even made a 360-degree digital device. From the water cube to the ice cube, the crystal clear Olympic rings were chiseled out with 24 "laser cutters" around the whole stadium.
Of course, these are not laser engraving technologies that can be achieved unilaterally. This also requires the assistance of the Bird's Nest ground screen. This LED screen on the Bird's Nest site is the largest ground screen in the world. The ground interactive projection is different from the ordinary projection screen. The ground interactive projection needs video effect software, projector, core control software and sensors to achieve. The shadow instrument projects the picture on the ground. When people walk through the projection area, the ground image will change. The projector and infrared sensing module capture the action of the experimenter through the capture device, and then interact with the ground through the interaction system.
It has to be said that in the past 14 years, China's scientific and technological level has undergone earth-shaking changes. The application of artificial intelligence, machine vision, cloud, Internet of Things, 5G. Compared with 2008, the Beijing Olympic Games focused more on displaying China's 5000 years of civilization and history.
Post time: Mar-14-2023