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Cloth real-time simulation method for virtual fitting

A simulation method and real-time simulation technology, applied in image data processing, 3D modeling, instruments, etc., can solve problems such as failure to meet real-time requirements, large calculation time consumption, unnatural human-computer interaction, etc.

Inactive Publication Date: 2018-10-09
NANJING UNIV
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Problems solved by technology

And each element test needs to solve at least one root of a cubic equation, 15 cases need to solve 15 cubic equations and some additional judgment conditions, so this process takes a lot of computing time and cannot meet real-time requirements
[0007] To sum up, the current 3D virtual fitting system is limited by the speed of cloth simulation. On the basis of maintaining high fidelity of cloth simulation, it is difficult to achieve the real-time simulation required by virtual fitting, resulting in unnatural human-computer interaction and poor user experience. Difference

Method used

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  • Cloth real-time simulation method for virtual fitting
  • Cloth real-time simulation method for virtual fitting
  • Cloth real-time simulation method for virtual fitting

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[0029] In order to describe the present invention more specifically, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. The core of this system lies in a fast cloth simulation method based on GPU, including the following steps:

[0030] Step 1 Load the corresponding 3D model of human body and clothing

[0031] After the user logs in, the pre-built 3D model of the user's human body and clothing is loaded, and then the user selects the clothing for virtual fitting.

[0032] Step 2 Construct the hierarchical bounding box of the current frame

[0033] First, the center of the corresponding bounding box of each triangle is used as a reference point to generate the corresponding morton code (morton code), and then the corresponding hierarchical bounding box structure is constructed in parallel by GPU.

[0034] In the generated morton code (morton code), repeated codes may appear. For repeated codes, the s...

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Abstract

The invention provides a cloth real-time simulation method for virtual fitting, which belongs to the technical field of virtual fitting. The problem solved by the invention is that a cloth fast simulation method based on a GPU is proposed for the problem that the simulation speed of the existing 3D virtual fitting is slow. The core part of a main algorithm of the cloth real-time simulation methodis to rapidly construct and update a bounding volume hierarchy (BVH) by maximally utilizing the parallelism of the GPU, and a collision detection and processing method for corresponding large step integration is proposed. According to the cloth real-time simulation method, an entire cloth simulation system is arranged on the GPU, and a corresponding stream processing algorithm is proposed. Compared with some existing methods at present, the cloth real-time simulation method provided by the invention can realize cloth simulation more rapidly on the basis of ensuring high realness degree of cloth simulation, realizes the real-time simulation of clothing in a virtual fitting application, and is suitable for other cloth simulation fields.

Description

technical field [0001] The invention belongs to the field of virtual fitting, and mainly aims at the problem of slow cloth simulation speed in the current 3D virtual fitting, and proposes a real-time cloth simulation method for virtual fitting. Background technique [0002] There are two main types of virtual fitting technology at present: virtual fitting based on 2D images and virtual fitting based on 3D graphics. The former uses 2D image textures to match the human body, which is prone to misalignment between clothes and the human body, and cannot be rotated 360°, resulting in a poor sense of reality. The virtual fitting based on 3D graphics realizes a high-realistic virtual fitting by modeling the human body and clothing in 3D, and then performing cloth simulation. Due to the large amount of calculation for cloth simulation, the simulation speed of the existing technology is slow, and the real-time simulation required by virtual fitting cannot be achieved. Currently, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/20G06T19/00
CPCG06T17/20G06T19/00G06T2210/21G06T2210/16
Inventor 周余苏统奎于耀
Owner NANJING UNIV
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