基于插值超分辨的双目三维重建方法OA北大核心CSTPCD
Binocular 3D reconstruction method based on interpolation super-resolution
基于双目立体匹配重建物体表面三维形貌时,其匹配精度往往受限于传感器尺寸、镜头焦距和光源环境等物理条件.针对此问题,本文提出了一种基于插值超分辨的双目表面三维重建方法.首先,在图像预处理阶段,建立基于小波变换与双直方图均衡融合的图像增强方法,克服传统双目视觉受限于复杂环境光干扰等问题;其次,构建基于拉格朗日与三次多项式插值的超分辨算法,提升图像像素密度,为双目匹配代价计算阶段增加图像细节,从而提高匹配精度;最后,基于SLIC算法对目标图像进行分割,并针对各分割区域分别做二次曲面拟合,进而获得与物体实际表面更为贴合的高度曲线,从而降低重建误差并可提高重建精度.实验结果表明:5组测量样品的全局高度测量平均相对误差为±2.3%,实验平均测量时长为1.8828 s,最大时长为1.9362 s,较传统方法有明显提升.实验分析结果验证了本文所提方法的有效性.
The reconstruction of the three-dimensional surface morphology of objects based on binocular ste-reo matching is constrained by physical conditions such as sensor size,lens focal length,and environmental light.A binocular surface three-dimensional reconstruction method based on interpolation super-resolution is proposed in response to this issue.First,at the image preprocessing stage,an image enhancement method based on wavelet transform and dual histogram equalization fusion is established to overcome the problems of traditional binocular vision limited by complex environmental light interference.Second,a super-resolu-tion algorithm based on Lagrange and cubic polynomial interpolation is constructed to increase the image's pixel density and add image details to the binocular matching cost calculation stage,thereby improving the matching accuracy.Finally,a simple linear iterative clustering(SLIC)method is used to segment the target image,and a secondary surface fitting is performed for each segmented area to obtain a height curve that is more closely aligned with the actual surface of the object,which can reduce the reconstruction error and im-prove the reconstruction accuracy.The experimental results show that the average relative error of the global height measurement of 5 sets of measurement samples is±2.3%,the average measurement time of the experi-ment is 1.8828 s,and the maximum time is 1.9362 s.This is a significant improvement over traditional methods.Experimental analysis results verify the effectiveness of the proposed algorithm.
刘宇豪;吴福培;吴树壮;王瑞
汕头大学工学院机械工程系,广东汕头 515063
计算机与自动化
双目视觉三维测量插值超分辨超像素分割
binocular vision3D measurementinterpolation super-resolutionsuperpixel segmentation
《中国光学(中英文)》 2024 (004)
862-874 / 13
国家自然科学基金(No.61573233);广东省自然科学基金(No.2021A1515010661);广东省普通高校创新团队资助项目(No.2020KCXTD012)Supported by National Natural Science Foundation of China(No.61573233);National Natural Science Found-ation of Guangdong,China(No.2021A1515010661);the Guangdong Provincial University Innovation Team Project(No.2020KCXTD012)
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