Full-frequency detail repair method for geometric model

Abstract

The geometric model full-frequency detail repair method of the invention is based on an adaptive decomposition to keep the original details of the geometric model, so as to effectively migrate and repair the missing geometric detail information of the model surface, thereby solving the problems of complex boundary alignment process and distortion of the model. Comprises the following steps: (1) inthe geometric model full-frequency detail decomposition stage, the average curvature is used as the input signal of the adaptive decomposition of the triangular mesh model, and the signal is decomposed to obtain the full-frequency geometric detail information including a group of intrinsic mode functions and the signal margin; (2), an optimal match stage of that patch model; (3), in that phase ofgeometric structure information transmission and model full-frequency repair, accord to the matching result obtain in the step 2, the full-frequency geometric detail information obtained in the step1 is transferred from a similarity patch to a target patch; for each signal, the mesh model is reconstructed, and different geometric details are restored, so that the model can be edited.

Description

technical field [0001] The invention relates to a data-driven full-frequency detail restoration method for a geometric model, belonging to the technical field of grid model data processing and model restoration. Background technique [0002] The modeling of cultural relics with a high degree of restoration is basically completed by 3D scanning, but the scanned 3D models often have damaged surfaces, so more and more restoration algorithms for maintaining the geometric details of the model have been proposed. [0003] At present, the main methods include methods based on voxel, based on texture synthesis, and based on template library. Model inpainting is an ill-posed problem, because most methods can achieve better inpainting effects in certain model situations, but they cannot be guaranteed to be applicable to other situations. For example, for some relatively small holes, it can achieve a good repair effect, but it cannot repair well the holes with rich geometric details a...

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Problems solved by technology

[0008] The full-frequency detail repair method of the geometric model described in the present invention aims to solve the problems existing in the above-mentioned prior art and based on the self-adaptive decomposition to maintain the original detail of the geometric model, so as to effectively repair the missing geometric details on the model surface Migrate and repair information to solve the problem of complex boundary alignment process and model distortion

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