High-Resolution Usages By Robert Ball Original Image size:3628x2357 Courtesy of NASA
Overview • Differences between large low-res. and large high-res. • Different systems: • 3x3 (tiled lcd) • Gigapixel (tiled lcd) • Smart board (projection) • focus+context (lcd plus projection) • Viz Blocks (rear projection)
3x3 array • My actual desktop • Resoltuion: 3840x3072 (typical 17” monitor: 1280x1024) • Cost about $5,000.00 • How would you like to program on this?
Gigapixel • A gigapixel = 1,000,000,000 pixels! • We currently have funding for a 0.2 gigapixel, or 200,000,000 pixels. • A typical 17” monitor has 1,310,720 pixels. • This thing is huge!
LCDs (Liquid Crystal Displays) • Problems/limitations of LCDs? • What about CRTs (Cathode Ray Tube)? Going away for good. Why? • Radiation, power guzzler, refresh rate (really bad for your eyes), and space required.
LCD or projection? • Which one? • Consider price and usage. With Bezels: Without Bezels:
Smart Board • A rear project system that is large, but is low-res. • Ideal for presentations and teaching.
Focus+Context Board • Microsoft research created this. • Combination of high and low resolution. • Has a built-in LCD screen surrounded by a projection screen.
VisBlocks • Rear Projection, high resolution • Costs $8,000 per block! Displayed is 20 blocks. That is $160,000! • Dr. North is getting 12 in January. (You figure out the math.)
Experiment • Research Question: Are 9 monitors always better than 1 monitor with regard to performance time no matter what image density used? • Participants: 36 people that were randomly selected. • ANOVA and post-hoc contrast analysis. • Image density:
Model • People in each group: The number of monitors was a with-in subject design and the data density was a between subject design): • Latin Square:
My Results - Quanlitative • People don’t like to use the mouse. They would prefer to just look at the data. • Having very fine detail on just one monitor can make people frustrated, uncomfortable, and not convinced that there is even something to find. • Not all monitors are looked at the same amount. It depends on your height!
Future Work - experiments • Insight and task based experiment on comparing one high-resolution display of geospatial data to multiple low-resolution views of the same data. • Comparing differing amounts of detail shown on visualizations and seeing who can get better performance time. Does the increased amount of detail detract from the overall structure? • Comparing different visualizations of linked data for different monitor sizes. • Comparing any of the above experiments on the 3x3 compared to the VisBlocks to see how bezels effect things.