Raised Line Drawing

A graphic representation in which lines and shapes are physically raised above the surface of paper or another substrate so they can be perceived by touch. Raised line drawings are a fundamental tool for making visual information accessible to blind and low-vision users, commonly used for maps, diagrams, charts, and illustrations. They can be produced through various methods including swell paper (microcapsule paper heated to raise printed lines), thermoforming, embossing, or 3D printing. While effective for conveying spatial relationships and shapes, raised line drawings require training to interpret and are most useful when accompanied by tactile labels or audio descriptions.