基于非规则表面分割的纹理贴附式几何校正算法

TEXTURE ATTACHMENT GEOMETRIC CORRECTION ALGORITHM BASED ON IRREGULAR SURFACE SEGMENTATION

为了增强投影显示系统对非规则投影表面的几何适应性,提出基于非规则表面分割的纹理贴附式几何校正算法。通过将特征标记图像作为纹理介质贴附于非规则投影表面的方式,来实现非规则投影表面的非重建式面片网格划分,有效地克服了非规则投影表面测量难度大、人工操作复杂度高等问题。利用特征标记图像中每个特征标记右侧的特征编码序号,更有利于快速准确地检测得到所有特征标记。将特征编码序号作为特征标记的码值使用,提高了特征标记图像对非规则投影表面的适应性和扩展性。通过对实验结果分析可知,几何校正算法能够实现非规则投影表面的贴附式纹理增强显示效果。

In order to enhance the geometric adaptability of projection display system to irregular projection surface,we propose a texture attachment geometric correction algorithm based on irregular surface segmentation.Attaching the feature marker image as texture material to the irregular projection surface,the non-reconstructed patches meshing of the irregular projection surface could be realized,so it effectively overcame the difficulties of measuring the irregular projection surface and the complexity of manual operation.Using the feature coding sequence number on the right side of each feature marker,it was more conducive to quickly and accurately to detect the feature markers.The feature coding sequence number was used as the code value of feature marker,which improved the adaptability and expansibility of feature marker image to irregular projection surface.Through the analysis of the experimental results,we can see that the geometric correction algorithm can achieve the attached texture enhancement display effect of irregular projection surface.