Difference between revisions of "Shape Filter"
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− | + | = General Description = | |
The ImageJ Shape Filter Plugin uses the [https://github.com/thorstenwagner/ij-blob [ij-blob]] library to characterize and filter objects in binary scenes by its shape. Therefore, several features are calculated as shown below. | The ImageJ Shape Filter Plugin uses the [https://github.com/thorstenwagner/ij-blob [ij-blob]] library to characterize and filter objects in binary scenes by its shape. Therefore, several features are calculated as shown below. | ||
[[File:Shape Filter GUI.png|200px|thumb]] | [[File:Shape Filter GUI.png|200px|thumb]] | ||
− | = Shape Features = | + | == Shape Features == |
* '''Area''' (<math>A</math>): The area enclosed by the outer contour of an object. | * '''Area''' (<math>A</math>): The area enclosed by the outer contour of an object. | ||
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* '''Fractal Box Dimension''': Estimated fractal dimension by the box count algorithm. The default box-sizes are “2,3,4,6,8,12,16,32,64”. | * '''Fractal Box Dimension''': Estimated fractal dimension by the box count algorithm. The default box-sizes are “2,3,4,6,8,12,16,32,64”. | ||
− | =Examples= | + | ==Examples== |
=Installation= | =Installation= |
Revision as of 09:59, 15 July 2015
Shape Filter Plugin (ImageJ/Fiji) | |
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Author | Thorsten Wagner |
Maintainer | Thorsten Wagner (wagner@biomedical-imaging.de) |
File | shape_filter_x.y.z.jar [1] |
Source | Github [2] |
Latest version | v1.2.1 (16 Jul 2015) |
Development status | active |
General Description
The ImageJ Shape Filter Plugin uses the [ij-blob] library to characterize and filter objects in binary scenes by its shape. Therefore, several features are calculated as shown below.
Shape Features
- Area (): The area enclosed by the outer contour of an object.
- Area Convex Hull (): The area enclosed by the convex hull of the outer contour of an object.
- Perimeter (): The perimeter of the outer contour of an object.
- Perimeter Convex Hull (): The perimeter of the convex hull of the particle.
- Feret Diameter: The maximum distance between the two parallel tangents touching the particle outline in all directions.
- Min. Feret Diameter: the minimum distance between the two parallel tangents touching the particle outline in all directions.
- Long Side Minimum Bounding Rectangle: The larger side of the minimum bounding rectangle.
- Short Side Minimum Bounding Rectangle: The smaller side of the minimum bounding rectangle.
- Aspect Ratio: Defined as
- Area to Perimeter Ratio: Defined as
- Circularity: Defined as
- Elongation: Defined as
- Convexity: Defined as
- Solidity: Defined as
- Number of Holes: The number of holes inside an object.
- Thinnes Ratio: Inverse proportional to the circularity. Furthermore it normed. It is defined as
- Contour Temperatur: It has a strong relationship to the fractal dimension, defined as
- Fractal Box Dimension: Estimated fractal dimension by the box count algorithm. The default box-sizes are “2,3,4,6,8,12,16,32,64”.