Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Yibao, Yuan"'
Publikováno v:
Precision Engineering. 40:74-80
The differences between the transmission characteristics of the standard cubic spline filter and the Gaussian filter lead to different evaluation results even for the same profile. There is indeed an adverse impact on the comparison of measurement re
Publikováno v:
AOPC 2017: 3D Measurement Technology for Intelligent Manufacturing.
This research mainly focuses on precise pneumatic-electric displacement sensor which has large measurement range. Under the high precision, measurement range can be expanded so that the need of high precision as well as large range can be satisfied i
Publikováno v:
AOPC 2017: 3D Measurement Technology for Intelligent Manufacturing.
This study concerns an orthogonal diffraction grating-based nanometer displacement sensor. In this study, we performed calculation of displacements in the XYZ directions. In the optical measured path part, we used a two-dimensional orthogonal motion
Publikováno v:
Precision Engineering. 36:586-592
The Gaussian filter described in the ISO 11562 standard has become the most widely used filtering technique in surface metrology. However, this filter is always plagued by the large distortions called end effects at the boundaries of the filtered res
Publikováno v:
ITM Web of Conferences, Vol 17, p 01006 (2018)
Bilateral filtering has been applied in the area of digital image processing widely, but in the high gradient region of the image, bilateral filtering may generate staircase effect. Bilateral filtering can be regarded as one particular form of local
Autor:
Yibao Yuan, Hao Zhang
Publikováno v:
International Journal of Image, Graphics and Signal Processing. 1:9-16
This paper presents a new spline filter named approximating spline filter for surface metrology. The purpose is to provide a new approach of Gaussian filter and evaluate the characteristics of an engineering surface more accurately and comprehensivel
Publikováno v:
ITM Web of Conferences; 2018, Vol. 17, p1-8, 8p, 2 Black and White Photographs, 2 Charts, 1 Graph
Publikováno v:
SPIE Proceedings.
An interpolation circuit based upon the looking-up table by hardware is presented. Output data of two A/D convertors are connected to ROM's address bus. The memory space of ROM is divided. When the address bus is activated by A/D conversion's output
Publikováno v:
SPIE Proceedings.
Lacking effective error compensation method is one important reason that limits the measurement precision of optical grating. A real-time compensation method for eliminating the interpolation error of moire fringes signal is proposed. The interpolati
Autor:
Yibao Yuan, Jingbo Xu
Publikováno v:
SPIE Proceedings.
The 2D Gaussian filter was realized in approximation method. A fast algorithm of 2D Gaussian filtering is presented to determine the reference surface for 3D surface topography. The 2D Gaussian filter can be separated into two 1D Gaussian filters, an