Grid segmentation method based on graph convolution network

A grid segmentation and convolutional network technology, applied in image analysis, neural learning methods, biological neural network models, etc.

Pending Publication Date: 2021-04-09
ZHEJIANG UNIV
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  • Claims
  • Application Information

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Problems solved by technology

The former often increases the amount of calculation due to the sparsity of the data, while the latter abandons the original structure of the three-dimensional object, and the amount of calculation is still relatively large

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  • Grid segmentation method based on graph convolution network
  • Grid segmentation method based on graph convolution network
  • Grid segmentation method based on graph convolution network

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Embodiment Construction

[0026] The idea of ​​the present invention is: use the adjacency relationship of the faces in the grid to form a graph, use the graph convolutional neural network and feature embedding to learn features on this graph, and finally use the fully connected layer to obtain the scores belonging to each category for each face, Finally, the category to which each face belongs is predicted, which specifically includes the following steps:

[0027] Step 1: Transform the mesh model to the specified number of patches, and perform centering and scaling operations.

[0028] Step 2: Convert the model processed in step 1 into a graph representation, and perform preliminary feature extraction for each face and then input it into the trained corresponding graph convolutional neural network. For the type of part that each face in the grid belongs to Make predictions. Wherein, the graph convolutional neural network is composed of a transformation module, a graph convolution module, a feature em...

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Abstract

The invention provides a grid segmentation method based on a graph convolution network, and the method takes the surface of a grid as a basic unit, and carries out the graph convolution operation in a dual graph formed based on the adjacency relation of the surface, so as to obtain the feature representation of the surface. In the feature acquisition stage, static and dynamic edge convolution is utilized at the same time, and the capability of learning information from potential relations between surfaces is also obtained while the actual adjacency relation is utilized. In addition, the features are further enhanced by utilizing the idea of feature embedding in instance segmentation, and finally, all parts of the grid are segmented by utilizing the enhanced features. According to the method, a better result is obtained on a data set segmented by a plurality of parts.

Description

technical field [0001] The invention belongs to the fields of computer graphics and computer vision, and in particular relates to a grid part segmentation method based on a graph convolutional network. Background technique [0002] Semantic segmentation is one of the key issues in computer vision. With the development of deep learning, semantic segmentation using neural networks in the field of two-dimensional images has been widely explored and studied. When this problem is extended to a 3D mesh, image-based operations are often not directly applicable due to its irregularity. Previous methods tend to voxelize 3D models or use multi-view 2D images to represent 3D objects, and then apply methods in 2D images. The former often increases the amount of calculation due to the sparsity of data, while the latter abandons the original structure of the three-dimensional object, and the amount of calculation is still relatively large. For the three-dimensional grid data, we transfo...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/11G06N3/08G06N3/04
CPCG06T7/11G06N3/08G06T2207/20081G06T2207/20084G06N3/045
Inventor 倪天宇郑友怡
Owner ZHEJIANG UNIV
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