Capturing And Viewing Big, Wide, And Deep Imagery Michael F. Cohen Matt Uyttendaele Johannes Kopf MSR – Interactive Visual Media Universitaet Konstanz.

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Presentation transcript:

Capturing And Viewing Big, Wide, And Deep Imagery Michael F. Cohen Matt Uyttendaele Johannes Kopf MSR – Interactive Visual Media Universitaet Konstanz

BIG 3,600,000,000 Pixels Created from about MegaPixel Images

BIG

Wide 150 degrees “Normal” perspective projections cause distortions.

Deep High Dynamic Range 100X variation in Radiance

Big, Wide, And Deep No longer a single “image” –So what is it? Requires a VIEWER to “explore” Issues –Capture –Viewing

Capture

Capturing Gigapixel Images

RAW

DeVignette

White Balance

Exposure Balance

Feature Points

Feature Matches

Align Tone-mapped

Capturing Gigapixel Images

Tile Pyramid

Viewing Gigapixel Images (Wide) Want to pan and zoom Question: what “projection” = mapping from directions in the world to points on the image Most cameras use Perspective = flat film plane Panoramic cameras use Cylindrical Spherical or Fisheye are yet other mappings

Viewing Gigapixel Images (Wide) Perspective is good for narrow angle –Straight lines stay straight –Most like our perception –But distorts at wide angle Cylindrical, Spherical are good for wide angles –Allows you to see whole field of view –But makes straight lines curved and feels flat when panning Want best of both!

Viewing Gigapixel Images (Wide) Perspective Cylindrical Ours

Viewing Gigapixel Images (Deep)

HD View

Big, Wide, Deep Images Thanks

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