论文标题
3D表面测量的皮秒高光谱边缘图案投影
Picosecond Hyperspectral Fringe Pattern Projection for 3D Surface Measurement
论文作者
论文摘要
用于表面3D测量的主动立体电视系统依赖于不同条纹模式在场景上的顺序投影以稳健而准确地生成3D表面数据。这将时间分辨率限制为可以投影和记录足够数量的模式的时间。通过频谱编码模式并使用高光谱成像仪记录它们，可以在单个图像中记录几种模式，从而将时间分辨率限制在照明持续时间。使用高脉冲能量飞秒的Ti：Sa Laser，在空心芯纤维中宽广的脉冲范围和两个高光谱摄像机，记录在梯形格栅上衍射产生的模式。
Active stereovision systems for the 3D measurement of surfaces rely on the sequential projection of different fringe patterns onto the scene to robustly and accurately generate 3D surface data. This limits the temporal resolution to the time by which a sufficiently high number of patterns can be projected and recorded. By encoding patterns spectrally and recording them with a hyperspectral imager, it is possible to record several patterns in a single image, limiting the temporal resolution to only the duration of the illumination. A picosecond 3D surface measurement was demonstrated using a high pulse energy femtosecond Ti:Sa laser, spectrally broadened in a hollow core fiber, and two hyperspectral cameras recording the patterns generated by diffraction at an Echelle grating.
