Expressive haptic rendering with cartoon-inspired effects

Non-photorealistic rendering (NPR) rejects a rigid adherence to physically accurate creation of visual imagery in favor of expressive styles that can enhance information transfer or create an artistic feeling. This paper considers those goals in the context of haptic rendering. Expressive haptic rendering techniques are developed for cartoon-inspired haptic rendering effects and demonstrated in three classic cartoon scenarios: super-slippery surfaces, exaggerated recoil and vibration upon hitting an object, and falling from a height based on a character´s awareness of danger. Subjectively, these effects create increased interest in a scene and can facilitate transfer of artistic goals to a user. The value of expressive haptic rendering derives from this enhanced interaction experience.