Therefore, in the design and production process of personalized clothing, it is often necessary to try on clothes yourself to investigate the effect of clothes on the body. However, under the network environment, when customers need to customize clothes remotely, it is obviously difficult to realize traditional tailor measurement and on-site fitting. Therefore, virtual reality fitting has become a technical problem that must be solved in modern clothing customization production.
Three-dimensional virtual fitting technology is an innovative product combining digital simulation technology with virtual reality. With the help of computer information processing technology and graphics principles, the user's body information is processed to form a relatively similar three-dimensional human model, so that the virtual model can be worn on the corresponding clothing products, and the user can observe through the system to achieve the effect of three-dimensional clothing fitting.
Since the appearance of virtual fitting technology, it has been trying to solve the problem that online shopping clothes can't be actually tried on, but it has been in a tepid state for a long time due to technical limitations and almost unsolvable privacy issues.
At present, most virtual three-dimensional fitting models are made by putting on computer software in advance, which is still different from the real size, body shape and face shape of the human body. The research on clothing virtualization technology in China is still in the exploratory stage, and there is no mature market-oriented software. Some e-commerce websites also try to open their own fitting rooms, but these fitting rooms are rough and the technology is too simple.
Taking the fitting room of Uniqlo as an example, it is mainly divided into body model and collocation model. In the body shape mode, consumers can choose similar body shapes among the five body shapes; In the collocation mode, consumers can choose their favorite clothes, and after clicking, the clothes will be "worn" on the model, showing the wearing effect of the selected clothes. However, these are not real three-dimensional virtual fitting.
"The upper body effect of clothes is very different from that in virtual images."
"The fit between clothes and the body looks ok when you try it on the internet, but it is very tight after wearing it."
"For me, the biggest problem is that smart recommendation has no appetite. It is better to search for it yourself. "
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With the virtual integration into people's lives, problems emerge one after another.
It can be seen that the ideal virtual fitting technology must take into account both data measurement and consumers' personal preferences. Although the latest virtual fitting 3D model and artificial intelligence automatic imaging technology may be able to more truly imitate the fitting effect of clothing cloth on human body and make the visual experience of fitting more intuitive, for consumers, there are still some problems to be solved urgently in online fitting technology at present, such as size recommendation matching degree and background clothing library.
Therefore, in the application fields of clothing CAD, network virtual fitting, three-dimensional human animation and so on, how to solve the problem of three-dimensional reconstruction of real human body and clothing is faced. Obtaining an accurate three-dimensional mannequin is usually the first step of virtual fitting, followed by fitting and realistic three-dimensional clothing simulation.
In order to realize the virtual environment of virtual fitting, online clothing display and virtual shopping, it is necessary not only to establish the model of human body and clothing, but also to consider the collision between human body and clothing. Therefore, it is necessary to unify the modeling of human body and clothing, and generate a virtual three-dimensional human body model similar to the actual human body quickly, conveniently and realistically, and carry out three-dimensional virtual fitting on this real model. Therefore, a complete set of "three-dimensional anthropometry system" and "three-dimensional fitting system" is essential.
Solution 0 1
The development of three-dimensional scanning technology is very rapid. Anthroscan Bodyscan, manufactured by German Human Solutions Company, can accurately obtain the three-dimensional body shape, size and color of human body, and can quickly capture the three-dimensional point cloud image and color texture information of human body. It is one of the most accurate 3d scanner at present.
Anthroscan Bodyscan adopts the most accurate laser triangulation technology. Eight cameras scan synchronously from the left front, right front, left rear and right rear directions of the human body to generate a 360-degree human body image model.
Solution 02
Jiaxing ultra-dimensional SLR camera array -VR3D instantaneous 3D imaging system human body capture
Another way is to use camera array equipment for shooting modeling. Body Capture series products of VR3D instantaneous three-dimensional imaging system use the principle of close-range photogrammetry to capture the photographer's all-round information instantly by synchronizing camera array and flash system. In addition, by integrating AutoModeling automatic modeling software, three-dimensional models can be obtained with one click.
When shooting, the real person stands in the center of the array and needs to stand in a T-shape or A-shape with open arms. This standard posture is mainly to facilitate the binding of human bones. In addition, the clothes worn by real people can also be unfolded, thus retaining more accurate clothing information in the final three-dimensional model.
Through the automatic modeling software integrated in the camera array, the collected 38 photos are automatically synthesized into a three-dimensional model.
After scanning for more than ten seconds or even several seconds, the system software will automatically reconstruct the 3D model, and it takes only a few tens of seconds for the complete 3D model to make a virtual fitting.
The clothing model generated by three-dimensional reverse modeling can not only greatly reduce the clothing production time, but also make the outline and details of the clothing more realistic. Among the clothing modeling systems, V-Stitch of Gerber Company in the United States, syst system of Germany and trunk 3D of PGM Company in the United States are relatively mature at present.
After scanning and measuring the consumer's real human body, body shape curve characteristics, facial features and other data through the three-dimensional human body scanning system, it is imported into the three-dimensional fitting system, and the original standard human body model of the three-dimensional fitting system is modified according to the real data in the "three-dimensional fitting system" to virtually reproduce the three-dimensional real human body model, so that the virtual human body model can reflect the body shape and facial characteristics of the real human body. After two-way selection, consumers and designers determine the design data such as clothing styles, fabrics and colors, and import them into the "tailor-made system" to complete the clothing design, automatically generate personalized clothing samples, and virtually "sew" them into ready-to-wear clothes, which can be worn on three-dimensional real mannequins to intuitively show the personalized fitting effect.
Although three-dimensional technology has made remarkable progress in virtual fitting, so far only a few mature systems have been officially used, and it takes a long process to achieve a certain degree of practicality. At present, there are still some difficult problems, such as the expression of fabric texture and motion, the realization of realism and flexible surface modeling, and the simulation of fabric drape.
Realizing virtual fitting is the trend of future life development and the inevitable trend of fashion design. From the consumer's point of view, in the digital environment, we can express multiple selves, explore new possibilities and become another self; For the clothing industry, digital fashion reduces waste, contributes to more sustainable fashion, greatly improves the quality of clothing design and accelerates product development.