Core Concepts
Customization is crucial for making visualizations accessible to blind and low-vision individuals with varying needs. The author presents a model of customization using content tokens to meet design goals effectively.
Abstract
The content discusses the importance of customization in making visualizations accessible to blind and low-vision individuals. It introduces a model of customization using content tokens to address design goals such as presence, verbosity, ordering, and duration. The study involved 13 participants evaluating the effectiveness of the customization features through a settings menu and command box interface.
The study highlights the challenges faced by blind and low-vision users in accessing visualizations and how customization can enhance their experience. By allowing users to adjust the content tokens based on their preferences, customization improves information retrieval efficiency. The implementation of the model in Olli, an open-source toolkit, demonstrates its practical application in creating accessible data visualizations.
Through a cooperative usability testing method, the authors evaluated the effectiveness of the customization features with participants. The Likert scale ratings indicated that participants found both prototypes (settings menu and command box) easy to learn and interact with. Action logging revealed insights into how users utilized different customization options based on their preferences and tasks.
Overall, the content emphasizes the significance of customization in enhancing accessibility for blind and low-vision individuals when interacting with data visualizations.
Stats
Customizations applied across all hierarchy levels: 37% used low preset, 37% used medium preset, 16% used high preset, 11% user-defined custom setting.
Command box interactions: 69% toggled presence, 22% changed ordering, 10% adjusted brevity.
Quotes
"Customization is crucial for making visualizations accessible to blind and low-vision individuals with widely-varying needs."
"We identify four design goals for how BLV people should be able to customize screen-reader-accessible visualizations."