کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7132601 | 1461719 | 2015 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
3D shape from phase errors by using binary fringe with multi-step phase-shift technique
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی برق و الکترونیک
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: 3D shape from phase errors by using binary fringe with multi-step phase-shift technique 3D shape from phase errors by using binary fringe with multi-step phase-shift technique](/preview/png/7132601.png)
چکیده انگلیسی
A three-dimensional shape measurement method is presented, which is a uniaxial measurement by measuring phase errors instead of the well-known phase, modulation or contrast. A sequence of exposures are captured by using a multi-step phase-shift technique with the binary fringes. Then the high-accuracy phases can be obtained by using all the exposures, meanwhile, a set of low-accuracy phases can be calculated by dividing those exposures into a set of four-step phase-shift measurements. For each pixel there will be a set of phase errors by subtracting low-accuracy phases from the high-accuracy ones. And the weighted phase error of every pixel can be calculated. Meanwhile the phase error caused by the improperly defocused binary fringes has a unique relationship with the depth z. Therefore, the 3D information of every pixel can be obtained by analyzing the phase errors. It will be promising for a uniaxial measurement, such as deep holes.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics and Lasers in Engineering - Volume 74, November 2015, Pages 22-27
Journal: Optics and Lasers in Engineering - Volume 74, November 2015, Pages 22-27
نویسندگان
Yuankun Liu, Qican Zhang, Xianyu Su,