Optimizing continuity in multiscale imagery (SIGGRAPH Asia 2010 paper)

Video accompanying the technical paper:
Charles Han, Hugues Hoppe. Optimizing continuity in multiscale imagery. ACM Trans. on Graphics (Proc. SIGGRAPH Asia 2010).

Abstract:
Multiscale imagery often combines several sources with differing appearance. For instance, Internet-based maps contain satellite and aerial photography. Zooming within these maps may reveal jarring transitions. We present a scheme that creates a visually smooth mipmap pyramid from stitched imagery at several scales. The scheme involves two new techniques. The first, structure transfer, is a nonlinear operator that combines the detail of one image with the local appearance of another. We use this operator to inject detail from the fine image into the coarse one while retaining color consistency. The improved structural similarity greatly reduces inter-level ghosting artifacts. The second, clipped Laplacian blending, is an efficient construction to minimize blur when creating intermediate levels. It considers the sum of all inter-level image differences within the pyramid. We demonstrate continuous zooming of map imagery from space to ground level.

See project page at http://research.microsoft.com/~hoppe/proj/pyramid/

Category:

Science & Technology

Tags:

• SIGGRAPH Asia 2010
• ACM Transactions on Graphics
• Bing Maps
• Google Earth
• satellite imagery
• aerial photography
• image pyramid
• mipmap
• structure transfer
• clipped Laplacian blending
• Han
• Hoppe