

Name  Shape Filter Plugin 
Software  ImageJ/Fiji 
Author  
Maintainer  
File  shape\_filter\_x.y.z.jar [\[1](https://github.com/thorstenwagner/ijshapefilter/releases/latest) \] 
Source 
Github [2 ] 
Status 
active 
General Description
The ImageJ Shape Filter Plugin use the [ijblob] library to characterize and filter objects in binary scenes by its shape. Therefore, several features are calculated as shown below.
If you like to cite the Shape Filter plugin in a scientific publication, please cite:
Wagner, T and Lipinski, H 2013. IJBlob: An ImageJ Library for Connected Component Analysis and Shape Analysis. Journal of Open Research Software 1(1):e6, DOI: http://dx.doi.org/10.5334/jors.ae
Shape Features
 Area (\(A\)): The area enclosed by the outer contour of an object.
 Area Convex Hull (\(C\)): The area enclosed by the convex hull of the outer contour of an object.
 Perimeter (\(P\)): The perimeter of the outer contour of an object.
 Perimeter Convex Hull (\(H\)): 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.
 Max. Inscr. Circle Diameter: The diameter of the maximum inscribed circle.
 Area eq. circle diameter: Equivalent circle diameter \(2\sqrt{\frac{A}{\pi}}\)
 Long Side Minimum Bounding Rectangle (\(L\)): The larger side of the minimum bounding rectangle.
 Short Side Minimum Bounding Rectangle (\(S\)): The smaller side of the minimum bounding rectangle.
 Aspect Ratio: Defined as \(L/S\)
 Area to Perimeter Ratio: Defined as \(A/P\)
 Circularity: Defined as \(P^{2}/A\)
 Elongation: Defined as \(1  S/L\)
 Convexity: Defined as \(H/P\)
 Solidity: Defined as \(A/C\)
 Number of Holes: The number of holes inside an object.
 Thinnes Ratio: Inverse proportional to the circularity. Furthermore it normed. It is defined as \(4\pi A/P^{2}\)
 Contour Temperatur: It has a strong relationship to the fractal dimension, defined as \(\left(log_{2}\left(\frac{2P}{PH}\right)\right)^{1}\)
 Orientation: The orientation of the major axis from in grad (measured counter clockwise from the positive x axis).
 Fractal Box Dimension: Estimated fractal dimension by the box count algorithm. The default boxsizes are “2,3,4,6,8,12,16,32,64”.
Installation
You could simply use our update site “Biomedgroup “ to install the shape filter plugin.