Optimized dithering technique in frequency domain for high-quality three-dimensional depth data acquisition

• 来源期刊: 中国物理B（英文版）
• 关键词: fringe generation genetic algorithm frequency domain 3D shape measurement
• 年，卷（期）: 2019,（8）
• 页码范围: 124-131
• 页数: 8页
• 语种: 英文
• DOI: 10.1088/1674-1056/28/8/084202

摘要

On the basis of the objective functions,dithering optimization techniques can be divided into the intensity-based optimization technique and the phase-based optimization technique.However,both types of techniques are spatial-domain optimization techniques,while their measurement performances are essentially determined by the harmonic components in the frequency domain.In this paper,a novel genetic optimization technique in the frequency domain is proposed for highquality fringe generation.In addition,to handle the time-consuming difficulty of genetic algorithm (GA),we first optimize a binary patch,then join the optimal binary patches together according to periodicity and symmetry so as to generate a full-size pattem.It is verified that the proposed technique can significantly enhance the measured performance and ensure the robustness to various amounts of defocusing.