Annotating Gigapixel Images

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Annotating Gigapixel Images

• Qing Luan, Steven Drucker, Johannes Kopf,
  Ying-Qing Xu, Michael Cohen
• Microsoft Research

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Annotating Gigapixel Images
4 Billion Pixels
Seattle
Alice
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Annotating Gigapixel Images

• Annotations
• Text Labels
• Ambient Sounds
• Narrative Audio

Boston
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Annotations

• When
• do annotations appear?
• What is their relative strength?
• do annotations disappear?
• Based on distance from the viewer.

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Gigapixel Image
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Approximate (Log) Depth
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Adding Annotations
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(xA,yA)
fA
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(xV,yV)
fV
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(No Transcript)
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Distance
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Distance
Strength
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Normalization
Hysteresis
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For each annotation, given

• Text (dis)appears based on thresholds
• Ambient Audio Volume related to strength
• Narrative Audio
• - Starts/Ends based on thresholds
• - Restarts where left off, unless time has passed

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Text Size
Fixed Screen Size
Fixed Texture Size
Average
feels more constant
appears to shrink/grow
grows/shrinks too fast
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Demo
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Related Work

• ZUIs
• Maps

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Annotating Gigapixel Images
Thanks