Rendering drawings for interactive haptic perception

Abstract

This paper describes a rendering method for generating tangible drawings of spatial real world objects based on a theory of haptic image perception and understanding. The method is based on an analysis of the process of drawing used by blind people and on cognitive considerations. A haptic rendering pipeline has been implemented which uses methods such as folding out or flattening to create 2D images from 3D models. The evaluation currently being carried out is described and the results are discussed in a broader application context.

Review of Designs for Haptic Data Visualization

“…Way and Barner [39], [40] in 1997 presented two seminal papers on the automatic translation of images into a tactile form, felt with the microcapsule paper. Furthermore, and in the same year, Kurze [138] presented a haptic renderer that converts a 3D scene into a 2D form that can be printed as a raised line drawing or used in some systems for interactive exploration [139]. Although these are foremostly static visualizations they are important and relevant to this paper because they utilize aggregation and simplification methods that are necessary for haptic visualization.…”

“…Although these are foremostly static visualizations they are important and relevant to this paper because they utilize aggregation and simplification methods that are necessary for haptic visualization. Additionally, Kurze [139] developed a navigation aid (TGuide) to interactively explore tactile images [138]. The system utilized a custom made mouse with eight vibrators, a digitizer pen and a speech recognition and synthesis system.…”

Vers la maîtrise du virtuel à travers le réel

“…La perception haptique est utilisée en combinant des perceptions tactiles (peau) et kinesthésiques (muscles et articulations). Cette définition a été établie car pour palper et percevoir des objets réels grâce au toucher, les stimuli tactiles et kinesthésiques sont nécessaires [23]. Même en proposant une grande variété de méthodes interactives graphiques, très peu de techniques de modélisation basées sur l'ordinateur ont permis aux modeleurs de concevoir directement avec leur meilleure boîte à outils : les mains [8].…”

Visualization tools for blind people using multiple modalities

“…Haptic devices allow users to interact directly with their data -to get an overview of a graph users could just run their fingers along it. This has many advantages over raised paper graphs that are used by blind people [10]. For example, our system is dynamic so that we can render a haptic scene in real-time, rather than having to wait for a raised paper graph to be printed.…”