计算机工程
計算機工程
계산궤공정
COMPUTER ENGINEERING
2014年
2期
246-249,255
,共5页
李新华%袁振宇%张涛%姚志明
李新華%袁振宇%張濤%姚誌明
리신화%원진우%장도%요지명
线结构光扫描%三维重构%足背点云%曲线拟合%曲面重构%参数测量
線結構光掃描%三維重構%足揹點雲%麯線擬閤%麯麵重構%參數測量
선결구광소묘%삼유중구%족배점운%곡선의합%곡면중구%삼수측량
line-structured light scanning%3D reconstruction%instep point cloud%curve fitting%surface reconstruction%parameter measurement
针对人体足背的三维建模问题,提出一种基于线结构光扫描的新型重构及测量方案。采用2台高分辨率 CMOS 摄像头,从不同角度拍摄照射在足背上的线结构光线,通过灰度重心法细化图像中的结构光线,经坐标转换获得足背的点云数据。对足背点云数据后跟处的盲区采用最小二乘曲线拟合法进行修复,并运用三维 Delaunay 网格化算法实现曲面重构,获得完整的足背三维轮廓。实验结果表明,该方案程序运行稳定,足部主要参数的绝对误差均小于4 mm,具有较高的测量精确度。
針對人體足揹的三維建模問題,提齣一種基于線結構光掃描的新型重構及測量方案。採用2檯高分辨率 CMOS 攝像頭,從不同角度拍攝照射在足揹上的線結構光線,通過灰度重心法細化圖像中的結構光線,經坐標轉換穫得足揹的點雲數據。對足揹點雲數據後跟處的盲區採用最小二乘麯線擬閤法進行脩複,併運用三維 Delaunay 網格化算法實現麯麵重構,穫得完整的足揹三維輪廓。實驗結果錶明,該方案程序運行穩定,足部主要參數的絕對誤差均小于4 mm,具有較高的測量精確度。
침대인체족배적삼유건모문제,제출일충기우선결구광소묘적신형중구급측량방안。채용2태고분변솔 CMOS 섭상두,종불동각도박섭조사재족배상적선결구광선,통과회도중심법세화도상중적결구광선,경좌표전환획득족배적점운수거。대족배점운수거후근처적맹구채용최소이승곡선의합법진행수복,병운용삼유 Delaunay 망격화산법실현곡면중구,획득완정적족배삼유륜곽。실험결과표명,해방안정서운행은정,족부주요삼수적절대오차균소우4 mm,구유교고적측량정학도。
Aiming at the problem of human instep 3D modeling, a new scheme that uses line-structured light scanning to reconstruct 3D model and measure parameters is presented. Line structure light photos are taken by 2 high resolution CMOS cameras from different angles. To get the point cloud data of instep, the scanning images are thinned by gray-gravity method and image coordinates is transformed to world coordinates. The least squares curve fitting algorithm is used to fix the blind data in human heel zone. And the 3D Delaunay triangulation algorithm is used to restructure the curved face of instep and get a complete human instep 3D model. Experimental result shows that the running of the scheme is stable, the absolute error of the main parameters of foot is less than 4 mm, and it has high accuracy.