Defocus-based three-dimensional particle location with extended depth of field via color coding

A quantitative evaluation of the depth of field of optical systems is given. Results of the calculation of the distribution of the complex amplitude and intensity in a three-dimensional scattering pattern formed by the optical system for an on-axis point object are presented. The work was carried out as part of developing optical systems with an extended depth of field for a synthesized hologram of a point object located on a perpendicular constructed to the hologram center.

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Three-Dimensional Computational Imaging with One Liquid Crystal Lens Camera and Refocusing from Extended Depth of Field Intensity and Depth Image Pair

Advances in 3D Image and Graphics Representation, Analysis, Computing and Information Technology - Smart Innovation, Systems and Technologies ◽

10.1007/978-981-15-3863-6_44 ◽

2020 ◽

pp. 397-403

Author(s):

Xiaoxi Chen ◽

Yalei Zhang ◽

Jiacheng Ma ◽

Liming Zheng ◽

Mao Ye

Keyword(s):

Liquid Crystal ◽

Field Intensity ◽

Three Dimensional ◽

Computational Imaging ◽

Depth Image ◽

Depth Of Field ◽

Image Pair ◽

Extended Depth Of Field ◽

Liquid Crystal Lens

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A three-dimensional multifunctional compound-eye endoscopic system with extended depth of field

Electronics and Communications in Japan ◽

10.1002/ecj.11431 ◽

2012 ◽

Vol 95 (11) ◽

pp. 14-27 ◽

Cited By ~ 8

Author(s):

Keiichiro Kagawa ◽

Kenji Yamada ◽

Eiji Tanaka ◽

Jun Tanida

Keyword(s):

Compound Eye ◽

Three Dimensional ◽

Depth Of Field ◽

Extended Depth Of Field

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Instantaneous three-dimensional sensing using spatial light modulator illumination with extended depth of field imaging

Optics Express ◽

10.1364/oe.21.016007 ◽

2013 ◽

Vol 21 (13) ◽

pp. 16007 ◽

Cited By ~ 65

Author(s):

Sean Quirin ◽

Darcy S. Peterka ◽

Rafael Yuste

Keyword(s):

Spatial Light Modulator ◽

Three Dimensional ◽

Depth Of Field ◽

Light Modulator ◽

Extended Depth Of Field ◽

Field Imaging

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Computer Assisted Image Reconstruction of Oligomer Structure

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100092323 ◽

1976 ◽

Vol 34 ◽

pp. 472-473

Author(s):

A.M. Jones ◽

A. Max Fiskin

Keyword(s):

Three Dimensional ◽

Depth Of Field ◽

Computer Assisted ◽

Projection Data ◽

Two Dimensional ◽

Single Particles ◽

Dimensional Reconstruction ◽

Computer Assisted Image ◽

The Fourier Transform ◽

Space Approach

If the tilt of a specimen can be varied either by the strategy of observing identical particles orientated randomly or by use of a eucentric goniometer stage, three dimensional reconstruction procedures are available (l). If the specimens, such as small protein aggregates, lack periodicity, direct space methods compete favorably in ease of implementation with reconstruction by the Fourier (transform) space approach (2). Regardless of method, reconstruction is possible because useful specimen thicknesses are always much less than the depth of field in an electron microscope. Thus electron images record the amount of stain in columns of the object normal to the recording plates. For single particles, practical considerations dictate that the specimen be tilted precisely about a single axis. In so doing a reconstructed image is achieved serially from two-dimensional sections which in turn are generated by a series of back-to-front lines of projection data.

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