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Touching Movement: 3D Tactile Poses for Supporting Blind People in Learning Body Movements

Kengo Tanaka, Xiyue Wang, Hironobu Takagi, Yoichi Ochiai, Chieko Asakawa

TL;DR

This research explores 3D-printed human body models to enhance movement comprehension for blind individuals through a participatory design approach that developed detailed 3D models representing various body movements and incorporated tactile reference elements to enhance spatial understanding.

Abstract

Visual impairments create barriers to learning physical activities, since conventional training methods rely on visual demonstrations or often inadequate verbal descriptions. This research explores 3D-printed human body models to enhance movement comprehension for blind individuals. Through a participatory design approach in collaboration with a blind designer, we developed detailed 3D models representing various body movements and incorporated tactile reference elements to enhance spatial understanding. We conducted two user studies with 10 blind participants across different activities: static yoga poses and sequential calisthenic movements. The results demonstrated that 3D models significantly improved understanding speed, reduced questions for clarification, and enhanced movement accuracy compared to conventional teaching methods. Participants consistently rated 3D models higher for ease of understanding, effectiveness, and motivation.

Touching Movement: 3D Tactile Poses for Supporting Blind People in Learning Body Movements

TL;DR

This research explores 3D-printed human body models to enhance movement comprehension for blind individuals through a participatory design approach that developed detailed 3D models representing various body movements and incorporated tactile reference elements to enhance spatial understanding.

Abstract

Visual impairments create barriers to learning physical activities, since conventional training methods rely on visual demonstrations or often inadequate verbal descriptions. This research explores 3D-printed human body models to enhance movement comprehension for blind individuals. Through a participatory design approach in collaboration with a blind designer, we developed detailed 3D models representing various body movements and incorporated tactile reference elements to enhance spatial understanding. We conducted two user studies with 10 blind participants across different activities: static yoga poses and sequential calisthenic movements. The results demonstrated that 3D models significantly improved understanding speed, reduced questions for clarification, and enhanced movement accuracy compared to conventional teaching methods. Participants consistently rated 3D models higher for ease of understanding, effectiveness, and motivation.
Paper Structure (51 sections, 9 figures, 7 tables)

This paper contains 51 sections, 9 figures, 7 tables.

Table of Contents

  1. INTRODUCTION
  2. RELATED WORK
  3. Access to and Challenges in Physical Activity for Blind Individuals
  4. Assistive Technologies for Motion Perception and Learning
  5. 3D Model-Based Representations for Spatial and Movement Understanding
  6. PARTICIPATORY DESIGN OF 3D MODELS
  7. Session 1: Initial Concept Development and Problem Recognition
  8. Problem Identification and Initial Prototyping
  9. Creation and Evaluation of Initial Prototypes
  10. Session 2: Content Creation and Target Selection
  11. Selection of Target Poses and Movements
  12. Yoga Pose Selection
  13. Calisthenic Movement Selection
  14. 3D Model Generation and Size Determination
  15. Session 3: Support Structure Design and Refinement
  16. ...and 36 more sections

Figures (9)

  • Figure 1: Six yoga poses categorized by physical difficulty level. Level 1 (left) shows three beginner poses: Chair Pose, Crescent Moon Pose, and Wind Relieving Pose. Level 2 (right) presents three intermediate poses: Warrior I Pose, Warrior II Pose, and Reverse Warrior Pose.
  • Figure 2: Calisthenics Poses showing two different sequences of four progressive movements.
  • Figure 3: Base design components of the proposed 3D modeling system. (a) A ground base with a reference marker, indicating floor orientation and helping users sense weight distribution and body balance. (b) Instruction to move the right foot backward using the reference marker. (c) Instruction to move the left foot forward using the reference marker.
  • Figure 4: Final design of the 3D tactile pose models used in the study. All figures in (a) and (b) are mounted on flat bases to enhance tactile stability and alignment. (a) Six yoga poses divided into two difficulty levels: Level 1 includes Chair, Crescent Moon, and Wind Relieving poses; Level 2 includes Warrior I, Warrior II, and Reverse Warrior poses. (b) Two calisthenic movements, Calisthenics 1 and Calisthenics 2, each represented as a four-step sequence using distinct 3D-printed figures to show transitional postures. Reference markers on the bases are included to help users perceive foot position and forward-backward motion.
  • Figure 5: Example of audio instruction format: First announcing the total number of steps, then explaining each step individually for the Crescent Moon Pose. This pose has three steps: STEP 1: Stand with your feet close to each other, maintaining balance with both soles. Feet are hip-width apart. STEP 2: Raise both arms from the sides upward, and bring your palms together in a prayer position. STEP 3: Tilt your upper body to the right side.
  • ...and 4 more figures