Need help or advice ? Come to the Icy club ! - Every Wenesday morning from 9h30 to 12h30 - Francois Jacob Building - Main hall - Pasteur
Register

User reviews

This plugin is not rated yet


Please log-in to post a review

Distance profiler (track processor)

by Alexandre Dufour

Track Processor plugin that computes the relative distance between detections and their evolution over time, with possibility to export to Excel for further analysis

Publication Id
ICY-P9B1Z1
See technical details
View complete changelog

Documentation

Introduction

This plugin is a track processor (i.e., available from the Track Manager) that computes the pair-wise relative distance between detections for each time point of a sequence.

Given a set of tracks (e.g., produced by your favorite tracker), the plugin will measure for each time point the distance between available detections at that given time point.

Example

Assume you have the following tracks in the track manager:

  • Track "A" with detectionss on frames 3 to 7
  • Track "B" with detections on frames 4,7,9
  • Track "C" with detections on frames 7 to 10

This plugin will measure the distances on the frames where the tracks overlap, i.e.:

  • Between tracks "A" and "B": on frames 4 and 7
  • Between tracks "A" and "C": on frame 7
  • Between tracks "B" and "C": on frames 7 and 9

Track groups

If you sequentially perform several tracking operations (e.g., adjusting tracking parameters, or tracking different objects with different trackers), each set of tracks will appear in the track manager as different groups (which you can hide/show via the "Tracking groups" menu). This track group information is kept in the final analysis, and lets you quickly sort the distances based on the interactions you are interested in (e.g. say, you may want to compare 2 track groups, but don't care about distances between detections within a given group).

Output

The output of this plugin is a spreadsheet with the following columns:

  • Track group (A): description of the track group for the first track
  • Track ID (A): the ID of the first track (its order within the group)
  • Track group (B): description of the track group for the second track
  • Track ID (B): the ID of the second track (its order within the group)
  • Frame: the sequence frame where both tracks overlap and a measure can be made
  • Distance: the distance in pixels between the 2 detections at the current frame

The "Export to Excel" button lets you push this data into a disk file for further sorting, processing, analysis.