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Image Database Access

Image Database Access. Find images from personal collections Find images on the web Find images from medical cases Find images from art collections Find images from architectural cases. General methods of query. Use prestored symbolic keys – standard Use example images provided by user

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Image Database Access

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  1. Image Database Access • Find images from personal collections • Find images on the web • Find images from medical cases • Find images from art collections • Find images from architectural cases Stockman MSU CSE

  2. General methods of query • Use prestored symbolic keys – standard • Use example images provided by user • User specifies colors, textures, shapes • User specifies image regions • User specifies region relationships • User sketches structures of images Stockman MSU CSE

  3. Query by example • User provides image (top left) • System creates its own feature rep. to match to other images Stockman MSU CSE

  4. QBIC (IBM) color histogram matching; user chooses colors Stockman MSU CSE

  5. Query is grid painted by user Stockman MSU CSE

  6. Texture features also possible Stockman MSU CSE

  7. User can sketch objects (more research needed) • User sketches boundaries of interest • System will use elastic matching (see Ch 14 S&S) on images in DB • Can be expensive Stockman MSU CSE

  8. Results of elastic matching Stockman MSU CSE

  9. Current problems • Indexing needed for fast browsing, but how can indexes be built? • Computing image features online will be slow, even offline computing will be slow. • What about deeper queries: “show me pictures of children enjoying eating” (same problem faced by traditional databases) • Show me pictures of tragic events, of poverty, of natural beauty, of triumph against bad odds … Stockman MSU CSE

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