User friendly softwareChris Rorden, University of South Carolina

www.mricro.com

Complex freeware•Most scientific freeware is complicated

•Developer has little incentive to make it user friendly.

•Most users want to use a tool without having to learn about underlying assumptions.

•Danger for unintended consequences

Interactivity•MRIcroGL uses GPU for interactive

volume rendering.

•Helps users intuitively grasp complex operations like the rendering transfer function.

Dragging node adjusts α and intensity. Double-click to set color

Video tutorials•Demonstrate range of capabilities

•Videos illustrate useful techniques.

•Show order of steps to produce desired results.

• Text rather than speech

• Bandwidth

• Frames can be paused while a translation is performed.

•Demonstrate functions to new users

•Help advanced users with repetitive tasks

•Remember sequence and parameters of processing steps

Scripting