Localized Haptic Texture: A Rendering Technique based on Taxels for High Density Tactile Feedback


論文アブストラクト:We investigate the relevance of surface haptic rendering techniques for tactile devices. We focus on the two major existing techniques and show that they have complementary benefits. The first one, called textsc{S}urface textsc{H}aptic textsc{O}bject (textsc{SHO}), which is based on finger position, is shown to be more suitable to render sparse textures; while the second one, called textsc{S}urface textsc{H}aptic textsc{T}exture (textsc{SHT}), which is based on finger velocity, is shown to be more suitable for dense textures and fast finger movements. We hence propose a new rendering technique, called textsc{L}ocalized textsc{H}aptic textsc{T}exture (textsc{LHT}), which is based on the concept of textit{taxel} considered as an elementary tactile information that is rendered on the screen. By using a grid of taxels to encode a texture, textsc{LHT} is shown to provide a consistent tactile rendering across different velocities for high density textures, and is found to reduce user textit{error rate} by up to 77.68% compared to textsc{SHO}.


この研究では,サーフェイス上で触覚刺激を与える2つの手法を組み合わせて,指の位置と加速度情報を利用した 触覚刺激提示システムを実装・評価しています.この2つの情報を組み合わせて,Taxelという触覚ディスプレイの概念を提案していまして この手法を利用することにより,高い密度でのテクスチャ描画が可能となり,テクスチャの識別率も従来手法よりも良いということを明らかにしています.