Embed Size (px)
Citation preview
Signal Processing Aspects of the Visualization of Scientific Data:
An Overview
Dennis Bergin
MSIM 842Old Dominion University
Signal Processing Aspects of the Visualization of Scientific Data:
An Overview
Objectives Signal Processing in Visualizing Scientific Data Spiral for Visualization of Serial Periodic data Research Visualization of Cardiac & Breath
Sounds Improve Visualization in Presentations
Motivation Explore visualization of scientific
data to improve presentation of dissertation research
Signal analysis & modification for real-time virtual pathology
Literature Search Signal Processing Aspects of Scientific Visualization, R.
Moorhead R., Z, 1995. Interactive Visualization of Serial Periodic Data, John Carlis,
1998. Investigations into Visualization and Significance of Phase
Relationships in Cardiac Rhythms, Eldon Nelson.
Heart and Breath Sound Visualization work by Hiroshima Makino, American Society of Anesthesiologists, 2002-2004,
The Visualization Process
Mapping Numbers To Imagery
ShapeColorOpacity
Temperature Pressure Humidity Salinity Density
Velocity Stress
Sound Visualization
Visualization TypesExploratory or Interactive
Scientific Visualization
Signal Processing Issues
Aliasing Color ModelsAutomatic Feature Extraction
Presentation of Scientific Data
FilteringData CompressionMultiresolution
Signal Processing Issues
Techniques “Colorwheel” Streamlines Line Interval
Convolution Critical Point Analysis
Issues with Visualization of Time-Invariant 2D Data
Multivariate Visual
Ambiguity Screen Clutter Visual
Distortion
Scalar Contours Shading
Serial Periodic Data
Traditional ApproachesTimelines for Temporal DataDynamic Query Systems/Starfield DisplaysFocus+Context /Zoom Calendar Visualization
REQUIRES: Simultaneous display of serial and periodic attributes (e.g. seasonality)
Spiral Visualization
Year-month Consumption % For 12 Highly Consumed Foods, 1980 – 1988
Monthly Consumption % For All 112 Foods During the period 1980 – 1988
Indented Spiral, With Spokes Monthly Consumption %, 1980 – 1988
Spiral Visualization
Tightening a Spiral View of Sound Data from 5 Instruments.
Single Spoke of a Spiral Display of Neuron Firing Frequencies
Average and Maximum Groups Sizes for 2
Chimpanzees
Visualization of Cardiac Rhythms and Breathing Sounds
Investigations of Eldon Nelson
Phase Relationship of the EKG Data Graph
Visualization Work by Hiroshima Makino
Visualization of Heart Murmur
Visualization of Cardiac Rhythms and Breathing Sounds
3D Visualization of Breadth Sounds Using Visualization Sound Color Software
Visualization Work by Hiroshima Makino
3D Breathing Sounds Color Visualization
Signal Processing Aspects of the Visualization of Scientific Data:
An Overview
Comparison of Related Publications Nelson and Carlis identify need for better ways to classify scientific data. Not a great deal of work in this area.Makino, Nelson research in visualizing sound dataMuch research in sonification of data - different, but related
Strengths & Weakness of the ContentGood job of identifying needed areas of improvement Sufficient overview of signal processing aspects of scientific data visualizationLacking details for implementing spirals Makino’s work was described clearly and concisely in abstracts
Signal Processing Aspects of the Visualization of Scientific Data:
An Overview
Useful Applications & Possible Extensions of Work
Spirals for Visualization of Seasonal & Frequency Data
Musical, Pathology, and Other serial periodic data
Impact on the State of the ArtSpirals Effective to Visualize Serial Periodic Data
Provides visual cues to both serial and periodic aspects of the data, and interactions such as the change in period over timeMultiple Common Data Sets and Multiple-link Views, Data Exploration
