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The
acronym OMA stands for Optical Multi-channel Analyzer
and is what Princeton Applied Research called their
early SIT vidicon cameras.
The
OMA program was developed by researchers as a way to
investigate and post-process photometric images from
CCD detectors used for laser-based imaging of
reacting and nonreacting flows as well as some
spectroscopic applications. Originally written in
assembly language on a PDP11 computer, the software
has been around since the late 1970s. It has since
grown on Classic Mac OS to be a very powerful image
processing platform. Additionally, OMA is used in
many labs as the front end interface for controlling
I/O devices such as cameras, Digital I/O cards and
stepper motors. OMA is a powerful control,
acquisition and processing system for photometric
images. This version has been updated to run under
Mac OS X v10.4.x and to take advantage of new
features in Mac OS X v10.5.x.
OMA
has been sold commercially for while at US$1000 per
copy, but in this new initiative both the
Application and the Source Code are being released
to the research comunity under the Gnu Public
License (GPL). It is hoped that this move will
create and foster a community of OMA users who (in
finding solutions to their own specific imaging
needs) are able to contribute to the development of
functionality within OMA. We encourage interested
programmers to help implement future development
directions and make suggestions.
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OMA
for Mac OS X Features |
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Image
Display
Display
Photometric Images with false color-maps.
Users can edit their own color-maps and load
them into OMA. Save As pdf graphics files.Includes
support for 3-plane images and TIFF imports.
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Image
Processing
Simple
transforms - scale, rotate, skew,
filter, add, subtract, ...
Complex
transforms - 2D-FFT, Gaussian smoothing,
Contour aligned smoothing, 2D-Gradients...
If
what you need is not available then implement
it yourself in C with the Source Code. (Requires
Xcode) |
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Macro
Scriptable
Group
OMA commands into ASCII text files and execute
them from within OMA. Generate batch files or
create your own OMA processing short cuts.
Macros can also have loops and simple
arithmetic on image-derived values. |
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PIV
Processing
Auto
and cross-correlation Particle Image
Velocimetry from particle image or image
pairs. Fully transparent PIV process, centroid
hunting, Multiple Peak hunting algorithm,
outlier correction, etc. You control the
processing! |
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2D
Vector Field Processing
Read,
store and manipulate 2D vector fields. Save
fields as vector pdf files for publication.
Import vector fields from text files. Convert
between vector fields and OMA images and vice
versa. |
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Camera
& Digital I/O Control Use
your Hardware's Control Libraries to interface
OMA to your equipment, then control timing,
stepper motors and cameras using OMA for Data
Acquisition AND Processing !
Read RAW, JPG, and TIFF image files from your
digital camera.
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Much
More...
Windows?
Linux? There is a version of the OMA program
that operates under Xwindows, which makes the
program available on Linux or even Windows
machines. For instructions on getting OMA
running on your Windows machine, check here.
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