2. THEMES
• Glyphs in medical visualisation, generally
• Combining glyphs with other types of visual representations
3. GLYPHS IN MEDICALVIS
• Glyphs in both research and clinical settings
• Clinicians still want numbers
• Perceptual bias is an issue
• Large variance in accuracy of perception
• Laying out glyphs can be an issue
4. POSITIONING GLYPHS
• Do we allow overlaps?
• What is the significance of each
glyph’s position?
• Strategies (Ward)
• Data-driven
• Structure-driven
6. OTHER CONSIDERATIONS
• Do we want some glyphs
to pop out?
• Can emphasise using
visual perception theory
• What parameter mapping
function is used?
• Continuous or discrete?
17. CAN WE DO BETTER?
Spatial
frequency
Density of
coverage
Transparency
Colour
important?
Heart Low High No Yes
Heatmap Low Low Variable No
Vector High Low Variable No
Glyphs High Low No Yes
18.
19.
20. CONCLUSION
• Layered visualisations largely an unsolved problem
• Do the benefits for the application outweigh the
challenges?
• A layered visualisation can be `modulated’ to assist user’s
visual decomposition of each layer
• How many visual channels can we use before the
visualisation becomes useless?