scholarly journals Influence on Sampling Interval of 3D Object in CGH Reconstruction

2016 ◽  
Author(s):  
Mizuho Kimura ◽  
Daiki Yasukochi ◽  
Takayuki Yokoyama ◽  
Kosuke Koga ◽  
Shiyuan Yang
Keyword(s):  
Sampling Interval ◽  
3D Object

Calculation of structure images of crystalline defects

1978 ◽  
Vol 36 (1) ◽  
pp. 282-283
Author(s):  
M.A. O'Keefe ◽  
Sumio Iijima
Keyword(s):  
Diffuse Scattering ◽  
Computing Time ◽  
Continuous Distribution ◽  
Sampling Interval ◽  
Reciprocal Space ◽  
Objective Lens ◽  
Lattice Images ◽  
Slice Method ◽  
Space Cell ◽  
Beam Lattice

We have extended the multi-slice method of computating many-beam lattice images of perfect crystals to calculations for imperfect crystals using the artificial superlattice approach. Electron waves scattered from faulted regions of crystals are distributed continuously in reciprocal space, and all these waves interact dynamically with each other to give diffuse scattering patterns.In the computation, this continuous distribution can be sampled only at a finite number of regularly spaced points in reciprocal space, and thus finer sampling gives an improved approximation. The larger cell also allows us to defocus the objective lens further before adjacent defect images overlap, producing spurious computational Fourier images. However, smaller cells allow us to sample the direct space cell more finely; since the two-dimensional arrays in our program are limited to 128X128 and the sampling interval shoud be less than 1/2Å (and preferably only 1/4Å), superlattice sizes are limited to 40 to 60Å. Apart from finding a compromis superlattice cell size, computing time must be conserved.

Adaptive Selection of Sampling Interval in Frequency Domain for Estimating the Poles of Scatterers

PIERS Online ◽  
2007 ◽  
Vol 3 (1) ◽  
pp. 106-110
Author(s):  
Shaogang Wang ◽  
Xinpu Guan ◽  
Dangwei Wang ◽  
Xingyi Ma ◽  
Yi Su
Keyword(s):  
Frequency Domain ◽  
Sampling Interval ◽  
Adaptive Selection ◽  
Selection Of

Problem of transformation the wireframe model of the 3D object, restored from its technical drawing

2018 ◽  
Vol 10 (5) ◽  
pp. 13-31
Author(s):  
T.V. Moshkova ◽  
S.I. Rotkov ◽  
M.M. Smychek ◽  
V.A. Tyurina
Keyword(s):  
3D Object ◽  
Technical Drawing ◽  
Wireframe Model

Superquadrics Model-based 3D Object Localization Algorithm

ROBOT ◽  
2013 ◽  
Vol 35 (4) ◽  
pp. 439 ◽  
Author(s):  
Lin WANG ◽  
Jianfu CAO ◽  
Chongzhao HAN
Keyword(s):  
Object Localization ◽  
Localization Algorithm ◽  
3D Object ◽  
Model Based
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