Paper
31 January 2013 Stitching for a large area of surface topography analysis of diamond grinding wheel
Shuang Wang, Changcai Cui, Chunqi Huang, Hui Huang, Ruifang Ye, Shiwei Fu
Author Affiliations +
Proceedings Volume 8759, Eighth International Symposium on Precision Engineering Measurement and Instrumentation; 87591B (2013) https://doi.org/10.1117/12.2014732
Event: International Symposium on Precision Engineering Measurement and Instrumentation 2012, 2012, Chengdu, China
Abstract
It is necessary to stitch small area of images together for large surface analysis while the measurement instrument used with a limited measurement area, e.g. White-light Interferometry (WLI)-based system. A new stitching method is proposed in this paper for diamond grinding wheel surface analysis. The images are captured by a WLI-based system and the 3D images’ stitching requires an overlapping region of 30%~50%. First, two-step intensity correlation matching method is used to obtain several pairs of matched points fast and the RANSAC (Random Sample Consensus) algorithm is adopted to screen them to get exact pairs of matched points. Then the measurement errors are adjusted and a stitched topography is got after data fusion. Experiments show that this method can effectively stitch 3D images of diamond grinding wheel together in less than 4 minutes with a correlation coefficient above 0.9 for two horizontal overlapping regions after adjustment.
© (2013) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Shuang Wang, Changcai Cui, Chunqi Huang, Hui Huang, Ruifang Ye, and Shiwei Fu "Stitching for a large area of surface topography analysis of diamond grinding wheel", Proc. SPIE 8759, Eighth International Symposium on Precision Engineering Measurement and Instrumentation, 87591B (31 January 2013); https://doi.org/10.1117/12.2014732
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KEYWORDS
Diamond

3D metrology

3D image processing

Data fusion

Signal to noise ratio

Interferometry

Digital filtering

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