What does "visualization" refer to in accessible design?

In accessible design, "visualization" specifically pertains to methods and tools that help convey information visually in ways that can be understood by all users. This encompasses the creation of visuals—such as charts, graphs, and infographics—that present data and concepts in an easily digestible format. The goal is to ensure that information is not only presented visually but is also accessible to individuals with varying levels of visual ability, including those with visual impairments. This can involve using appropriate color contrasts, clear labels, and alternative text descriptions to enhance understanding.

While using graphics to replace written content might seem like a way to improve comprehension, it does not inherently ensure that the content remains accessible to everyone, particularly for individuals who rely on screen readers. Similarly, color coding can add visual interest but should not be the sole method of conveying important information, as it may be ineffective for users who are colorblind or have difficulty perceiving certain colors. Filtering visual content based on user preferences does not directly relate to the fundamental concept of visualization in accessible design, which centers around the effective communication of information to all users through appropriate visual methods.