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Segmentation-Based Blood Blurring: Examining Eye-Response Differences in Gory Video Viewing.

Jiwon Son1, Minjeong Cha1, Sangkeun Park1

  • 1Department of Software Convergence, Kyung Hee University, Yongin 17104, Republic of Korea.

Sensors (Basel, Switzerland)
|April 12, 2025
PubMed
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Selective blood blurring in videos reduces perceived gore and viewer distress. This content moderation technique helps protect vulnerable audiences while preserving narrative details.

Area of Science:

  • Computer vision and human-computer interaction
  • Media studies and content moderation
  • Psychology and viewer response

Background:

  • Online video platforms offer vast content but pose risks of exposure to graphic material for vulnerable viewers.
  • Existing content filtering methods may be too broad, impacting narrative integrity or failing to adequately protect audiences.
  • A need exists for nuanced filtering that balances viewer protection with content accessibility.

Purpose of the Study:

  • To develop and evaluate a segmentation-based approach for selectively blurring blood in video content.
  • To assess the impact of partial blood blurring on perceived gore and viewer physiological responses.
  • To explore the potential of this method as a content moderation strategy for online platforms.

Main Methods:

Keywords:
HCIeye trackinggory videophysiological responsessegmentation-based blurringviewing experience

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  • Recruited 37 participants to view both blurred and unblurred versions of five gory video clips.
  • Recorded eye-based physiological and gaze data (eye openness ratio, blink frequency, eye fixations) using a webcam and eye tracker.
  • Analyzed data to correlate blurring with perceived gore and physiological reactions.

Main Results:

  • Partial blood blurring significantly reduced the perception of gore in highly brutal video scenes.
  • Participants showed physiological responses to gore, including decreased eye openness and increased blink frequency.
  • Individuals with a higher fear of blood exhibited more pronounced blinking responses.

Conclusions:

  • Segmentation-based blurring is a viable content moderation strategy to reduce viewer distress from graphic content.
  • This approach offers a balance, mitigating discomfort without completely obscuring narrative elements.
  • The findings support its value for streaming services aiming to cater to diverse user needs and enhance audience safety.