کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5007706 1461697 2017 18 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Reconstruction of accurate 3-D surfaces with sharp edges using digital structured light projection and multi-dimensional image fusion
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی برق و الکترونیک
پیش نمایش صفحه اول مقاله
Reconstruction of accurate 3-D surfaces with sharp edges using digital structured light projection and multi-dimensional image fusion
چکیده انگلیسی


- The method is to measure and reconstruct accurate 3-D surfaces with sharp edges.
- A new method integrates structured illumination imaging (SIM) and image fusion.
- The method is vital to in-situ automated optical inspection and optical metrology.

The study presents a novel method that uses structured illumination imaging and data fusion to address one of the most difficult problems in 3-D optical measurement where an accurate 3-D sharp edge must be reconstructed, to allow automated inspection and reconstruction of a 3-D object. An innovative algorithm for reconstructing a 3-D surface profile with a sharp-edge boundary using multi-dimensional data fusion is proposed. An accurate 2-D surface edge is extracted from an image with high spatial-resolution, that is reconstructed using structured illumination imaging (SIM), so the projected edge contour of 2-D contour along the optical imaging axis can be accurately determined. The neighboring surface between the 2-D detected edge and the identified 3-D surface contour is reconstructed by extrapolating the surface using NURBS surface fitting to detect the intersecting edges. Experiments are performed to confirm the feasibility, effectiveness and accuracy of the developed method and there is a comparison between the results for a reconstructed 3-D sharp edge and a pre-calibrated high precision instrument. The proposed method ensures that a maximum deviation between the reference target and the reconstructed critical dimension is 3 μm so a resolution for the optical imaging system of less than 0.5 pixel can be achieved. The experimental results demonstrate that the proposed method is both effective and accurate.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics and Lasers in Engineering - Volume 96, September 2017, Pages 17-34
نویسندگان
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