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Overview

General

“Upperlimb” is a stand alone application focused on upper extremity motion analysis, based on measurement data collected from 3D optical marker tracking systems.

It has been created for quick and easy processing and analysis of upper limb movement data and is offered as a graphical user interface to ensure maximum applicability in medical practice and research.

Features

The application includes advanced algorithms for joint center- and axes estimation, based on functional methods. The results of the data processing can be visualized as 3D stick figure motion and time series plots. It also integrates a motion analysis data mining tool to collect frame based parameters from the time series and it allows to export this data for external processing, e.g. by spreadsheet programs (Excel or Open/Libre-Office).

Upperlimb is a highly configurable software tool that allows to:

  • anatomical landmark reconstruction and process joint kinematics
  • split the captured motion data into motion cycles based on a free configurable event scheme
  • determine spatiotemporal parameters for every motion cycle
  • export data in different formats (d3d, MAT, PDF, CSV, XML, gla, glx)
  • create reference data files from processed data

Distinctive features:

  • Stand-alone and multiplatform application (no matlab licence is needed, available for windows and linux baased operating systems).
  • Using of trial-metadata files (e.g. .enf-files from Vicon measurement systems) to control the processing steps (Details).
  • Several functional methods available for joint center/axes estimation with event-based control of the phases the estimations are based on (Details).
  • Working with additional static scapula “tip-trials”, to deal with scapula measurement for humerus elevation angles bigger than 90 degrees.
  • Adjunct SHR ratio algorithm, without gimbal locks and independent from offset angles (Details).

History

The original application Version 0.1 has been developed from the company ORAT Software-Entwicklung in the year 2009 to simplify and standardize research projects from medical PD students in the Gait- and Motionlab at Heidelberg University clinics. It fullfills the specific needs of this gaitlab only.

“Upperlimb 0.2” was the first application based on the Nimue platform - a high configurable set of modules to build up motion analysis applications. It includes a big set of commercial modules, which prohibits, that the application can be made available open source as a whole.

With the growing number of PD students, working with this software, and with the growing number of publications based on its calculations, the idea comes up to implement a “Version 2 Upperlimb software” and to make it commonly available.

Changelog

Unreleased


Upperlimb 0.926 - 2018-08

Added

Changed

Removed

Fixed

Planed

  • Planed to fix in this version: Static shoulder angles measurements over 90 degree sometimes show offset about 180 degree.
  • The resizing behavoir of the window showing processed data is unhandy. If the status switched from processed data not available to available the size should be grown vertically automatically to show the new processed data node.
  • Fixing the bug that probihits cancelation of running calculations.

Upperlimb 0.925 - 2018-07

Added

  • Default Upperlimb Model changed to Version 1.5, which includes new measure variants for describing Scapula Humeral Rhythm (SHR) and functionality to show configurable glenohumeral ROM phases in the sheets. This is useful to analyse data of patients with less the 90 degree humeral elevation.
  • New attribute “threshold” added to the <AdjunctRotation>-element.
  • Installer for 64bit Windows machines
  • Support for JDK1.8/64bit with more memory support
  • Support for Windows 10
  • Fast Fourier transformation available in a Plotsheet or as Input/Output-Filter of the Processing Step.
  • The export as csv file format functionality now considers a given labelset and label group name. If a labelset is given, than only the defined labels are exported. If a label group name is given, than the name is interpreted as as phase an only frames of phases with phase type name = label group name are exported. Addionionally the number of fraction digits as defined in the options for the csv file format are respected.
  • If functional joint center determination for center of rotation based on Gamage 2002 is used, a new attribute “biasCompensationMaximumChange” is added, which defines a value for the maximum allowed difference between the last two interations. If the difference is bigger than this value, for one or more of the three components, than an explicit warning is given in the process log. The Upperlimb default models has switched on this functionality.

Changed

  • Grouping for big numbers is switched off in the csv-export.
  • Determination of R/LElePhase depends now on a new parameteter defined as a constant to define the minimum elemvation ROM to detect a phase. Details are described here.

Removed

  • The context menu of the nodes in the “Data”-view have included actions, which are not needed. The child-nodes representing d3d-files now do not allow cut, copy, paste, delete and rename. Instead these actions are useful for the raw-data files, e.g. c3d-files. All nodes now include only useful actions.

Fixed

  • Sometimes the tree view update of the processed d3d-file corrupts. During processing a session, the the UI reaction can be slow and it can happen, that undesired mouse actions invokes a rename process. Internal node names of d3d-files depend on the file name. That´s why renaming during processing a session can corrupt the file. If this happens, the user can see that nodes names change to a name with an inserted “.c3d” string. This bug is fixed by elimination of the rename action in the context menu of the d3d-nodes.
  • If the plot sheet is switched from singles trials to meanStd (action in the toolbar) and not for all plots all timeseries are available you get an error message that mean-std is not possible and the toolbar action switch “meanstd” is automatically unchecked if you close the modal warning message. But the single trials are not shown again. Now this is fixed and the single trials are automatically shown again after closing the warning dialog.
  • Some export routines has wrongly written only one time frame, if only matrix 3×3 timeseries should be exported. Fixed by a better timeserie length estimation for generic data objects which does not know anything about timeseries.
  • Usage of adjunct rotation failes, if the attribute phase is used during setting the values to NaN before the given phase starts.
  • If a session folder contains “_” characters output d3d-files are not shown in the ouput view of the Data Explorer.

Future

At the preset, we have started to make the usage of the current (already extended) version of the software possible outside the Heidelberg Motionlab. To do this, the documentation must be extended and components which are very specific for the Heidelberg Motionlab must be removed. Based on the experiences made with the application of the software in Schulthess clinics in Zürich - Swizerland and at Hertie institute Tübingen - Germany I try to move the development of the software into a generic tool which can be used by the customers with minimal support.

If you are interested in starting with upperbody motion analysis you can ask Oliver Rettig for an introduction in measuring and modelling details, in the usage of the Upperlimb software and for adaptions to your specific research interests. Professional support and consulting is available.

It is planed to find a funding, to build a basis version of Upperlimb, open sourced as a whole. An extended version, inclusive professional support, cauld be made commerically available and supported in the future.

start.txt · Last modified: 2018/07/20 14:12 by oliver