scholarly journals Sparse Estimation under Saturated Condition for 3D Measurement and Its Application for Bin-Picking Robot

2020 ◽  
Vol 86 (1) ◽  
pp. 106-112
Author(s):  
Naoya CHIBA ◽  
Koichi HASHIMOTO
2016 ◽  
Vol 34 (4) ◽  
pp. 261-271 ◽  
Author(s):  
Shogo Arai ◽  
Tomoki Harada ◽  
Atsushi Touhei ◽  
Koichi Hashimoto

Author(s):  
Katherine V. Whittington

Abstract The electronics supply chain is being increasingly infiltrated by non-authentic, counterfeit electronic parts, whose use poses a great risk to the integrity and quality of critical hardware. There is a wide range of counterfeit parts such as leads and body molds. The failure analyst has many tools that can be used to investigate counterfeit parts. The key is to follow an investigative path that makes sense for each scenario. External visual inspection is called for whenever the source of supply is questionable. Other methods include use of solvents, 3D measurement, X-ray fluorescence, C-mode scanning acoustic microscopy, thermal cycle testing, burn-in technique, and electrical testing. Awareness, vigilance, and effective investigations are the best defense against the threat of counterfeit parts.


2012 ◽  
Vol 27 (2) ◽  
pp. 264-269 ◽  
Author(s):  
Christian Lorbach ◽  
Ulrich Hirn ◽  
Johannes Kritzinger ◽  
Wolfgang Bauer

Abstract We present a method for 3D measurement of fiber cross sectional morphology from handsheets. An automated procedure is used to acquire 3D datasets of fiber cross sectional images using an automated microtome and light microscopy. The fiber cross section geometry is extracted using digital image analysis. Simple sample preparation and highly automated image acquisition and image analysis are providing an efficient tool to analyze large samples. It is demonstrated that if fibers are tilted towards the image plane the images of fiber cross sections are always larger than the true fiber cross section geometry. In our analysis the tilting angles of the fibers to the image plane are measured. The resulting fiber cross sectional images are distorted to compensate the error due to fiber tilt, restoring the true fiber cross sectional shape. We use an approximated correction, the paper provides error estimates of the approximation. Measurement results for fiber wall thickness, fiber coarseness and fiber collapse are presented for one hardwood and one softwood pulp.


Author(s):  
Jiaxin Guo ◽  
Lian Fu ◽  
Mingkai Jia ◽  
Kaijun Wang ◽  
Shan Liu
Keyword(s):  

2021 ◽  
Author(s):  
Timon Hofer ◽  
Faranak Shamsafar ◽  
Nuri Benbarka ◽  
Andreas Zell

Sign in / Sign up

Export Citation Format

Share Document