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    Online shoppers can better judge material softness by optimizing visual cues. Visual indentation depth, not speed, is key to matching perceived softness with actual haptic feel, improving online purchasing decisions.

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    Area of Science:

    • * Human-Computer Interaction
    • * Perception Science
    • * Materials Science

    Background:

    • * Online shopping limits tactile interaction, leading to potential dissatisfaction due to mismatched visual and haptic product properties.
    • * Optimizing visual information is crucial for aligning perceived and actual material softness in e-commerce.
    • * Inconsistencies between visual expectations and haptic reality can negatively impact customer experience.

    Purpose of the Study:

    • * To investigate visual parameters (indentation depth and speed) for matching perceived haptic and visual softness.
    • * To optimize visual information to ensure consistency between visual cues and tactile feedback.
    • * To enhance the accuracy of softness judgments made from visual information alone.

    Main Methods:

    • * Participants performed a two-alternative forced choice task comparing visual softness impressions to haptic softness.
    • * A Gaussian process algorithm optimized visual parameters based on 25 repeated judgments per material.
    • * Visual indentation depth and speed were systematically varied and analyzed against haptic feedback.

    Main Results:

    • * Optimized visual indentation depth correlated strongly with material compliance and haptic indentation depth.
    • * Visual indentation speed did not consistently relate to material compliance, indicating its lesser importance for softness matching.
    • * Subjective ratings of softness matching significantly improved post-optimization, validating the method.

    Conclusions:

    • * Visual indentation depth is a critical parameter for accurately perceiving material softness online.
    • * Optimizing visual cues can bridge the gap between visual perception and haptic reality in e-commerce.
    • * Successful matching of haptic and visual softness relies on the relationship between visually and haptically detected indentation depths.