Does Zooming Improve Image Browsing

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Does Zooming Improve Image Browsing

• Presenter Rui Yang
• Discusser Anusha

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What is an Image Browser?

• An Image Retrieval Systemfor example
  http//www.altavista.com
• An Image Browser for example ACDSee

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A Zoomable Image Browser(ZIB)

• What ZIB looks like?Features
• Integration of Image Browsing and Image Retrieval
• Overview Details
• Search History
• Panning Zooming

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Zoomable User Interfaces

• A kind of visualization technique on spatially
  organized information.
• ZIB takes the advantage of ZUI and make the
  panning and zooming easier.
• Why ZIB is better? Compared with several other
  browser tools next

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Compared with ThumbsPlus

• A 2D image browser
• No Zoom in out
• Too many detailed windows

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Compared with Simple Landscape

• 3D image browser
• Walk or fly through the scene using mouse
• Separate window to show selected image

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Compared with PhotoGoRound

• A VRML image browser
• Rotate / spin scene to browse

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Experiment

• Performed a user study
• Each users is trained.
• Each subject was asked to browse through a set of
  images until he/she had located the target image.

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Criterion of Evaluating a Retrieval System

• Precision the number of relevant documents
  retrieved divided by the total documents
  retrieved.
• Recall the number of relevant documents
  retrieved by the system divided by the total
  number of relevant documents.

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Results Analyze
Users satisfaction
Performance time
Incorrect images
Recall of image
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Conclusion

• some guidelines for designing image browsing
  system
• 1. better choose zoomable image browser or 2D
  grid of thumbnails
• 2. numbers of image displayed per view
• So with large scale of image sets, ZIB appear to
  works better.

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Thanks!!!