Collision Detection

In virtual reality and haptic systems, collision detection is the computational process of determining when virtual objects come into contact with each other or with a user's virtual representation (such as a virtual hand or cane). When a collision is detected, the system can trigger force feedback, sound effects, or other responses. In accessibility applications, collision detection is essential for haptic interfaces used by blind people — it enables users to "feel" virtual objects by applying forces to their fingers or hands when they touch virtual surfaces, walls, or objects. The accuracy and speed of collision detection algorithms directly affect the realism and responsiveness of the haptic experience.