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Three-dimensional object normal vector, geometry and material acquisition method based on neural network

A neural network and three-dimensional object technology, applied in the processing of 3D images, image data processing, instruments, etc.

Active Publication Date: 2019-12-13
ZHEJIANG UNIV +1
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Problems solved by technology

Although there are some previous works that collect the geometric and material information of objects at the same time, these methods also have relatively strong simplifying assumptions

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  • Three-dimensional object normal vector, geometry and material acquisition method based on neural network
  • Three-dimensional object normal vector, geometry and material acquisition method based on neural network
  • Three-dimensional object normal vector, geometry and material acquisition method based on neural network

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Embodiment Construction

[0076] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0077] Based on the idea of ​​"actively irradiating some specific patterns on the object, collecting photos at the same time, and obtaining the normal vector of the object by calculating the obtained photos", the present invention provides an acquisition method combined with a neural network. Further, the method uses the obtained normal vector to optimize the model of the object. This method can also obtain material feature information while obtaining the normal vector. The final joint results in high-quality geometry and material acquisition. The specific implementation of the three parts is described in detail below:

[0078] One, a kind of three-dimensional object normal vector acquisition method based on neural network, the method m...

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Abstract

The invention discloses a three-dimensional object normal vector, geometry and material acquisition method based on a neural network, and provides an acquisition method combined with the neural network on the idea of 'actively irradiating an object with a plurality of specific patterns. while collecting a picture and calculating the obtained picture to obtain an object normal vector '. Further, the method uses the obtained normal vector to optimize the model of the object. The material characteristic information can be obtained while the normal vector is obtained. Finally, a high-quality geometric and material acquisition result is obtained through combination. The number of illumination patterns obtained through the method is small, the obtained normal vector is high in precision, and themethod is not limited to a certain specific collection device.

Description

technical field [0001] The invention relates to a method for obtaining a normal vector of a three-dimensional object based on a neural network, a geometry optimization method and a material acquisition method based on the method, and belongs to the fields of computer graphics and computer vision. Background technique [0002] Digitizing real objects has long been a difficult problem in computer graphics / vision. Currently, digitized real objects can be represented by a three-dimensional grid and a six-dimensional spatially varying bidirectional reflectance distribution function (SVBRDF). Based on this representation, the appearance of objects under any viewing angle and lighting conditions can be well rendered. [0003] However, how to simultaneously obtain the reflection information and geometric information of objects with high efficiency and high quality is still a big challenge. On the one hand, high quality requires that as many observations as possible can be obtained...

Claims

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Application Information

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IPC IPC(8): G06T15/00G06T15/04G06T15/50
CPCG06T15/005G06T15/04G06T15/50
Inventor 吴鸿智周昆康凯彰
Owner ZHEJIANG UNIV
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