Related Experiment Video
Updated: Jun 12, 2026

Compact Lens-less Digital Holographic Microscope for MEMS Inspection and Characterization
Published on: July 5, 2016
Resolution limits of holographic mapping filters for geometric coordinate transformations
Abstract:
A recently proposed position, rotation, and scale-invariant optical pattern recognition system using a holographic logpolar mapping filter is analyzed with respect to resolution and accuracy. The limits are set by the resolution of the mapping filter, which must have a bandwidth proportional to the square of the input bandwidth. With 1800 x 1800 pixels in the computer-generated mapping filter, we get a maximum input field of 24 x 24 pixels and an angular resolution of 4.80 degrees . Determination of the position of the input object is possible with at best 50% relative accuracy, and, in practice, multiobject capability is highly questionable. Numerical simulations and experimental evidence support the resolution limits found.
Related Concept Videos
Geometry of Hyperbolas
Imaging Biological Samples with Optical Microscopy
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...
Coordinates and Map Projections
Chromatographic Resolution
The effectiveness of separation can be evaluated by determining the level of separation between two neighboring peaks in a chromatogram, which represents the individual components of a sample.
In chromatography,...
Super-resolution Fluorescence Microscopy
