项目名称: 基于人类视觉启发的变尺度三维测量技术研究
项目编号: No.51305201
项目类型: 青年科学基金项目
立项/批准年度: 2014
项目学科: 机械、仪表工业
项目作者: 崔海华
作者单位: 南京航空航天大学
项目金额: 26万元
中文摘要: 光学三维面形测量方法具有非接触、速度快、精度高、易于在计算机控制下实现自动化测量等优点,已得到大量深入研究并被广泛应用,但目前的方法大多仅能实现固定分辨率和固定深度的同尺度场景三维测量,适用性受到了限制。本项目受人类视觉变尺度三维成像机理的启发,提出一种变尺度三维测量方法。研究内容主要包括:分析人类视觉变尺度三维成像和聚焦机制,建立基于双目立体视觉测量方法的变尺度三维测量模型;研究基于高斯核的人类视网膜和视觉皮层感受区的尺度空间建模机理,构造尺度空间恒定的三维靶标,实现变尺度场景动态三维测量和数据关联;研究变尺度三维视觉测量系统动态标定与优化算法,提高测量精度;基于特征识别思想和迭代优化收敛算法建立不同尺度测量数据的分区模型,实现变尺度场景三维数据融合。本项目研究成果为大视场、大深度场景的快速、精确、高分辨率和高柔性测量提供一种有效途径,对视觉测量技术的发展具有重要的现实意义和科学价值。
中文关键词: 三维测量;变尺度测量;立体视觉;系统标定;尺度恒定特征
英文摘要: Optical three-dimensional(3D), due to its several distinct advantages such as contact-free, high precision, fast, and prone to the realization of automated measurement under computer control, has been researched in-depth and widely used. However most of the current methods can only achieve 3D measurement of the same scale scene with fixed resolution and depth. Inspired by the human adaptive vision, we develop a variable scale 3D measurement method. The research mainly includes: analyze human vision 3D imaging and focusing mechanism, and establish variable scale 3D measurement model based on the stereo measurement method; research the scale space modeling mechanism of the human retina and visual cortex feeling district based on the Gaussian kernel, and construct scale space 3D target, and achieve mutative scale scenes dynamic 3D measurement and data association; study dynamic calibration and optimization algorithms for variable-scale 3D measurement system; construct hierarchical model of different scale measurement data based on characteristics identifying ideological and iterative optimization algorithm, and achieve variable-scale scene 3D data fusion. The research successfully provides an effective, fast, accurate, high-resolution and high-flexible measurement way for large field-view, large-depth scene, provin
英文关键词: three-dimensional(3D) measurement;multi-scale measurement;stereo vision;system calibration;scale variation feature