Microscopic surface contouring by fringe projection method

Quan, Chenggen; Tay, Cho Jui; He, Xiaoyuan; Kang, Xin; Shang, H.M.

doi:10.1016/s0030-3992(02)00070-1

Cited by 80 publications

(38 citation statements)

References 15 publications

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“…Through this approach, Van der Jeught et al [7] have realized 120 Hz microscopic 3D profilometry in real-time by utilizing the graphics processing unit (GPU) for real-time 3D data processing and visualization, which is similar to what have been realized in macro-scale measurement systems [8][9][10]. There are also research works that change the lenses into non-telecentric lenses with small field-of-view (FOV) and long working distance (LWD) [11][12][13][14][15]. Lately, telecentric lenses are utilized as an alternative to those non-telecentric methods owing to their larger depth of focus (DOF) [16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Microscopic structured light 3D profilometry: Binary defocusing technique vs. sinusoidal fringe projection

Zhang

2017

Optics and Lasers in Engineering

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Section: Introductionmentioning

confidence: 99%

Microscopic structured light 3D profilometry: Binary defocusing technique vs. sinusoidal fringe projection

Zhang

2017

Optics and Lasers in Engineering

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“…Three-dimensional (3D) shape measurement is of great importance to fields ranging from manufacturing to medicine [1,2]. Numerous techniques have been developed, including Moiré, holography, and digital fringe projection (DFP) [3].…”

Section: Introductionmentioning

confidence: 99%

Optimal fringe angle selection for digital fringe projection technique

Wang

Zhang

2013

Appl. Opt.

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Existing digital fringe projection (DFP) systems mainly use either horizontal or vertical fringe patterns for three-dimensional shape measurement. This paper reveals that these two fringe directions are usually not optimal where the phase change is the largest to a given depth variation. We propose a novel and efficient method to determine the optimal fringe angle by projecting a set of horizontal and vertical fringe patterns onto a step-height object and by further analyzing two resultant phase maps. Experiments demonstrate the existence of the optimal angle and the success of the proposed optimal angle determination method. Disciplines Computer-Aided Engineering and Design | Mechanical Engineering CommentsThis article is from Applied Optics (2013) Existing digital fringe projection (DFP) systems mainly use either horizontal or vertical fringe patterns for three-dimensional shape measurement. This paper reveals that these two fringe directions are usually not optimal where the phase change is the largest to a given depth variation. We propose a novel and efficient method to determine the optimal fringe angle by projecting a set of horizontal and vertical fringe patterns onto a step-height object and by further analyzing two resultant phase maps. Experiments demonstrate the existence of the optimal angle and the success of the proposed optimal angle determination method.

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“…Several optical methods have been developed for surface contouring. In recent years, phaseshifted fringe projection method has become a predominant method of surface contouring, and has been extended to measurement of micro-components such as MEMS components [6][7][8].…”

Section: Introductionmentioning

confidence: 99%