This site contains: mathematics courses and book; covers: image analysis, data analysis, and discrete modelling; provides: image analysis software. Created and run by Peter Saveliev.
ImageJ
From Intelligent Perception
ImageJ is an open source software intended primarily for image processing with some image analysis tools.
Here we have a comparative analysis of ImageJ's and Pixcavator's image analysis capabilities.
|
Tasks and features |
ImageJ |
Pixcavator |
|
Analysis of the gray scale image after binarization |
Yes |
Yes |
|
Computation of binary characteristics of objects/particles |
Yes (A specific binarization in ImageJ has to be found first by thresholding or another method.) |
(The characteristics are computed for all possible thresholds.) |
|
size/area |
Yes |
|
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circularity/roundness |
Yes |
|
|
Yes |
Yes |
|
|
Yes |
Yes |
|
|
Yes |
No (not used in such applications as microscopy where the results should be independent of orientation) |
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Analysis of the gray scale image without prior binarization |
Limited |
|
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Yes |
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Filtering detected objects (in order to deal with noise etc) |
Yes (with respect to contrast only) |
Yes |
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Yes |
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Image segmentation method |
Watershed - for either max or min but not both (dark or light objects but not both) |
Topology (both dark and light objects) |
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Computation of gray scale characteristics of objects |
No |
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No |
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No |
Yes |
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saliency/mass |
No |
|
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No |
Yes |
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Automatic analysis |
Yes |
|
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Semi-automatic mode |
No |
(based on objects found for all possible thresholds) |
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Manual mode |
No |
(full control over found objects) |
|
User interface |
Hundreds of commands in drop down menus |
6 sliders, 7 buttons |
|
“Wrong image format!” “Threshold first!” “Results unsatisfactory? Start over!” |
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Screenshots |
ImageJ
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Pixcavator
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Support |
From the programmers via email list |
From Pixcavator's creator via email and phone |
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Documentation |
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Open source |
Mathematics (and computer code) |
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Platforms |
Windows, Mac, Linux |
Windows only |
|
Price |
Free (the development of ImageJ is funded by the US government through the NIH) |
$245 (free trial), free student edition |
An ImageJ ticket:
Wayne [Rasband] had an idea for a command called “Analyze Image” that combines filtering, background correction, segmentation, particle analysis, etc. It would work something like the closed-source, Windows-only Pixcavator program. As Wayne said, “It would not be an easy thing to create but it would be very popular with ImageJ users”.
See also other Image analysis software.
