Zhejiang University invents a new computational water transfer printing technology to customize colorful 'coats' for three-dimensional objects

u003cbru003e u003cbr /u003e u003cbru003e Recently, a cool video went viral on a famous foreign video website: a white cheetah model that was just three-dimensional printed and slowly immersed in a pool of floating colored film. When it surfaced again, the body 'grew' out The fur, eyes, ears, and tail are vivid in color. The video has been viewed more than 500,000 times so far, and many scientific and technological media have praised it: this is a 'crazy' and 'unbelievable' invention. u003cbr /u003e u003cbru003e u003cbr /u003e u003cbru003e This video shows the latest results of Professor Zhou Kun's team at the State Key Laboratory of Computer-Aided Design and Graphics at Zhejiang University: In a project in cooperation with Columbia University, the team performed traditional water transfer technology Innovative, a new computational water transfer printing technology is proposed, which solves the problem of accurately coloring three-dimensional objects. Papers related to this research result have been accepted by top conferences in the international computer graphics community. u003cbr /u003e u003cbru003e u003cbr /u003e u003cbru003e Simply put, this is a new type of printing technique-point-to-point 'targeting' three-dimensional objects for precise coloring. Zhou Kun, a Changjiang scholar at Zhejiang University who led the research, said that it is still quite difficult for 3D printing technology to print and produce full-color 3D objects with complex patterns. This makes the three-dimensional printing that is originally oriented towards personalized customization, in terms of pattern and color realization, is always 'individualizedThis has always been a problem in the industry and science. u003cbr /u003e u003cbru003e u003cbr /u003e u003cbru003e Although some industrial-grade 3D printers can support color printing at present, the printing cost is high, the speed is slow, and it is limited to very few materials such as plastic and plaster. 'We hope to solve the bottleneck problem in the production of 3D printing by means of calculation. Make things that were difficult before easy.'u003cbr /u003e u003cbru003e u003cbr /u003e u003cbru003e 'Water transfer is a curved surface coloring technology that is currently widely used in industry, but it can only be used for coloring tasks that do not require accuracy, such as camouflage, marble and other textures.' Zhou Kun said, 'We Through computer graphics and computer vision technology, the water transfer printing can be 'targeted' and put on a arbitrarily designed color 'coat' for three-dimensional objects.' u003cbr /u003e u003cbru003e u003cbr /u003e u003cbru003e The research team used software to 'dimension reduction' of the three-dimensional design draft into a two-dimensional 'expanded drawingCalculate the deformation of the water transfer film. After that, the research team used an ordinary inkjet printer to print out the water transfer film printed with the 'expanded image\'In layman's terms, this is like a precise automatic'sticking film'.u003cbr /u003e u003cbru003e u003cbr /u003e u003cbru003e u003cbru003e