ARIEL DISPLAY PROGRAM
Once
an analysis sequence has been digitized, transformed and smoothed, the ARIEL DISPLAY module is a Windows based
program used to obtain a complete presentation of image motion data for
biomechanical analysis.
The
DISPLAY module allows simultaneous
presentation of the three-dimensional stick figures, displacement, velocity,
acceleration, video images and numerical data tables as well as analog data
signals.
The
stick figures may be displayed in single frame, multiple frames or animation
mode with multiple image sequences being viewed at the same time. The size, location and orientation of the
stick figures for each sequence can be set in any manner desired to create
comparison displays. Text labels can be
added to the display to create complete illustrations and copies of the color
graphic display may be printed from the color printer.
The
DISPLAY software also allows
normalizing the data signals in both time and amplitude.
Although
a few of DISPLAY’s features appear
complex, they are relatively easy to master once you understand the underlying
concepts. This manual is arranged to
teach you these concepts in a logical order by showing you, in step-by-step
fashion, how to use the DISPLAY
program.
A
few of the new features you will see in DISPLAY version 1.0
1. Signal Normalization. Analog and kinematic signals can be
normalized in both Time and Amplitude.
2.
Simultaneous AVI Display. AVI files can be synchronized with analog and 3D signals.
3.
Extended Graphing Options.
Graphs can be generated in X vs Y format as well as the distance between
any two points.
4.
APAS Tool Bar.
A toolbar has been added to allow the user to activate individual APAS
modules from within the main programs.
5.
Template Options.
A template option has been added to allow the user to create analysis
templates for use with other data files.
6.
Alignment Options.
Figures can be aligned to correspond to a desired axis.
7.
Segment Linear Options. Segment linear options of Force, Energy and Power have been added
to the display options.
The
following list provides the basic guidelines for the necessary components of
the DISPLAY program to provide the best possible performance. The software requires a minimum of Microsoft
Windows 95/98 or later and APAS-2000 Revision 1.0 or later.
1. Ariel Performance Analysis System (APAS)
software used to collect kinematic data in *.3D and analog data in *.ANA file
formats.
Prior
to performing the DISPLAY analysis
process, you should take the time to familiarize yourself with the format and
contents of the various screens listed below:
THE APAS TOOL BAR
You
can activate any of the APAS software modules from within the current program
by selecting the icons located on the APAS tool bar. The tool bar is toggled on/off using the APAS Toolbar command in
the VIEW menu. A check mark in the left
column of the menu indicates that the toolbar is currently active. The toolbar can be re-located anywhere in
the main program window by dragging it with the mouse. The following program modules can be
activated by clicking the appropriate icon.
Icons are pictorial representations of programs, commands or
functions.
THE TOOL BAR
You
can activate many functions by selecting the icons located on the DISPLAY program tool bar. The tool bar is located near the top of the
window. The icons in the Display Tool
Bar can be divided into three sections.
Icons are pictorial representations of commands or functions. You can access the following commands by
clicking the appropriate icon.
MAIN DISPLAY TOOL BAR
The Main Tool Bar icons can be used to
activate general file commands.
GRAPHING TOOL BAR
Sampled data can be displayed using the
icons in the Graphing Tool Bar.
ANIMATION TOOL BAR
The icons in the Animation tool bar are
used to "mimic" buttons on a VCR.
When these icons are selected, all active windows will be updated with
the command.
THE DISPLAY WINDOW LAYOUT
When
a Display file is opened, additional windows will be displayed inside the main
window. Multiple windows can be opened
simultaneously. The DISPLAY Title will be displayed at the
top of each Display Window. The
Display Window title incorporates the *.DIS filename that consist of the *.ANA
filename and the associated *.3D file being used.
THE STATUS BAR
The
status bar provides information about the current DISPLAY file. The status bar is located at the bottom of
the DISPLAY window.
The
right side of the DISPLAY Window Status Bar is divided into three fields. The first field displays the name of the
currently active Analog file. If no analog file has been selected, no name
will be displayed.
The
second field displays the name of the currently active 3D file. If no 3D file has
been selected, no name will be displayed.
The
third field displays the name of the currently active worksheet file. If a worksheet file has not been specified
for exporting the data, this field will remain blank.
The
far left side of the status bar indicates the current status of the DISPLAY
file. This field will usually state READY
1.
Double-click the DISPLAY icon
located in the APAS System window
group. The main DISPLAY window will
appear.
The
following steps are recommended for correct operation of the Display program.
1.
Choose the NEW command from the FILE menu. This will open a new *.DIS document with an empty list of Display
data sets. A grid with 12 columns
appears to display the active sample list.
2.
Select the ANALOG command
from the FILE menu to specify
an Analog (*.ANA) file for retrieving
data sets. This selection can be
changed at any time.
3.
Click on the NEW-A/D button below the “grid” and
select a Save Trial and Channel from the active Analog file. Clicking the SELECT button will add the selected data set(s) to the list of data
sets in the grid without leaving the dialog box. Select the OK button
to enter the selected data set to the active data set display.
4.
Repeat Step #3
to select all data sets of interest.
The
main "grid" displays information relating to the new data types. The first five columns are flags that are
toggled by clicking on the grid element:
Column #1(A) - is used to
mark individual entries as either active or inactive. Active channels will be graphed and displayed for analysis. If an entry is active, a "=>" will be displayed in the
first column. If an entry is inactive,
the first column will be blank. If the
user selects FILE, SAVE AS and there are disabled channels, the program prompts
the user whether or not to save disabled channels.
Column #2 (M) - is used to
mark an individual entry as the Maximum Voluntary Contraction (MVC). Only one entry can be labeled as the
MVC. The Maximum Voluntary Contraction
channel is the channel where the subject has performed a maximum
contraction. Marking a channel as the
MVC is only required for normalizing using the MVC option.
Column #3 (T) - is used to
mark an individual entry as the Trigger channel. Only one entry can be labeled as the Trigger. The Trigger channel is used in partitioning
data. It typically is not an EMG
channel but rather some other signal which helps one partition the analog
data. An example would be a switch
opening/closing to define an activity of interest.
Column #4 (C) - is used to
for angle measurements. When this
column is selected, the Complement angle will be displayed.
Column #5 (X) - is used to
mark an individual entry as the X-axis for displaying X-Y graphs. Only one entry can be labeled as the X-axis.
Column #6 - is the
Filename of the current data file.
Column #7 - is the
Trial ID of the analog data file.
Column #8 - is the
Channel ID of the analog data trial.
Column #9 - is left
blank for analog data.