This page is a part of CVprimer.com, a wiki devoted to computer vision. It focuses on low level computer vision, digital image analysis, and applications. It is designed as an online textbook but the exposition is informal. It geared towards software developers, especially beginners, and CS students. The wiki contains mathematics, algorithms, code examples, source code, compiled software, and some discussion. If you have any questions or suggestions, please contact me directly.
ImageJ
From Computer Vision Primer
Here we have a comparative analysis of ImageJ and Pixcavator 2.4.
|
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 has to be found first by thresholding or another method.) |
(The characteristics are computed for all possible thresholds.) |
|
size/area |
Yes |
|
|
circularity/roundness |
Yes |
|
|
centroid |
Yes |
Yes |
|
perimeter |
Yes |
Yes |
|
bounding rectangle |
Yes |
No (Useless for such applications as microscopy where the results should be independent of orientation) |
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|
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Analysis of the gray scale image without prior binarization |
Limited |
|
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Detection of objects as max/min of the gray scale |
Yes |
|
|
Filtering detected objects (in order to deal with noise etc) |
Yes (with respect to contrast only) |
Yes (with respect area, contrast, roundness, and saliency) |
|
Counting objects/particles |
Yes |
|
|
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) |
|
Computation of gray scale characteristics of objects |
No |
|
|
contrast |
No |
|
|
center of mass |
No |
Yes |
|
saliency/mass |
No |
|
|
average contrast |
No |
Yes |
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Automatic analysis |
Yes |
Yes |
|
Semi-automatic mode |
No |
Yes (based on objects found for all possible thresholds) |
|
Manual mode |
No |
Yes (full control over found objects) |
|
User interface |
Hundreds of commands in drop down menus |
4 sliders, 7 buttons |
|
User experience (mine) |
“Wrong image format!” “Threshold first!” “Results unsatisfactory? Start over!” |
|
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Screenshots |
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| Platforms |
Windows, Mac, Linux |
Windows only (cellAnalyst web application is available) |
| Price |
Free |
$150 (free trial) |
