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A 3D hair reconstruction method based on a single image

A single image, hair technology, applied in the field of 3D hair reconstruction based on a single image, can solve the problem of unfavorable real-time rendering of 3D hair

Active Publication Date: 2020-04-28
SOUTH CHINA UNIV OF TECH
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Problems solved by technology

[0004] Aiming at the problem that the current 3D hair reconstruction work is not conducive to real-time rendering, the present invention proposes a 3D hair reconstruction method based on a single image, which can reconstruct 3D hair whose shape is close to the original image according to the face image and can be used for real-time rendering Model

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  • A 3D hair reconstruction method based on a single image
  • A 3D hair reconstruction method based on a single image
  • A 3D hair reconstruction method based on a single image

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Embodiment Construction

[0050] The present invention will be further described below in conjunction with specific examples.

[0051] The 3D hair reconstruction method based on a single image provided by this embodiment is as follows: the hair model is converted into a strip grid model, and the strip grid hair model database is constructed. Given an input image, first from The hair region extracts the hair shape retrieval map, the hair shape feature vector and the hair direction graph as the retrieval information, then retrieves the hair model most similar to the retrieval information from the strip grid hair model database, and finally fits the hair model into the human head model. Based on this, the present invention proposes a three-dimensional hair reconstruction framework, such as figure 1 shown.

[0052] In the 3D hair reconstruction method based on a single picture described in this embodiment, the algorithm flow is as follows figure 1 shown, including the following steps:

[0053] 1) Str...

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Abstract

The invention discloses a three-dimensional hair reconstruction method based on a single picture. The method comprises the steps of 1) strip mesh hair model generation, 2) strip mesh hair model database construction, 3) picture-based hair style retrieval (hair style retrieval); and 4) strip mesh hair and head fusion (hair fusion). The main process comprises the steps that a hair model is transformed into a strip mesh model; a strip mesh hair model database is constructed; an input image is given, and a hair shape retrieval map is extracted from the hair region thereof; a hair shape feature vector and a hair directivity diagram are used as retrieval information; a hair model most similar to the retrieval information is retrieved from the strip mesh hair model database; and finally the hairmodel is attached to a human head model. The method provided by the invention realizes three-dimensional hair reconstruction for a single picture, and can be applied to hair reconstruction and hair animation.

Description

technical field [0001] The invention relates to the technical field of computer graphics and three-dimensional animation production, in particular to a method for reconstructing three-dimensional hair based on a single picture. Background technique [0002] Human beings are not only the subject of various activities, but also the object of many applications, so most virtual reality applications are inevitably human-centered. The reconstruction of human surface shape and its motion plays a key role in such applications. From daily life, game animation, education and training to industrial design, it is increasingly important to construct highly realistic personalized virtual human static models and dynamic geometry. sex. For example, in a virtual fitting, in addition to body shape and motion information, the fitting person's facial expressions, fluttering hair, etc. will have an impact on the experience. In many virtual reality applications, the realistic appearance of char...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T17/00G06T15/40G06F16/583G06F16/51
CPCG06T15/405G06T17/00
Inventor 李桂清何华赟
Owner SOUTH CHINA UNIV OF TECH
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