# Find maxima (Trackmate module)

 Name Find Maxima Detector for TrackMate Software Fiji Author Maintainer File TrackMate\_FindMaxima.jar [$1](https://github.com/thorstenwagner/ij-trackmate-findmaxima/releases/latest)$ Source Github [2 ] Status active

## Purpose

This plugin implements the find maxima detection algorithm for TrackMate. It was tried to resample the approach as for the Process -> Find Maxima… command. The results are almost the same. Subpixel accuracy is activated by default.

## Installation

Copy the jar file into your fiji plugins folder. If you start TrackMate it is detected automatically and you can choose it as detector.

## Parameters

Estimated blob diameter: To achieve subpixel accuracy this region is used for refining the positions.

Tolerance: As for the Process -> Find Maxima… command: “Maxima are ignored if they do not stand out from the surroundings by more than this value. In other words, a threshold is set at the maximum value minus noise tolerance and the contiguous area around the maximum above the threshold is analyzed. For accepting a maximum, this area must not contain any point with a value higher than the maximum. Only one maximum within this area is accepted.”

## Example

The example shows a typical image of scattering nanoparticles. The detection was done with a estimated blob diameter of 10 and tolerance of 10: