9.1 Why Image Matching?
Image matching deals with several particular problems, which cannot be addressed by text search, 1D barcode search, or 2D barcode search:
(1) Tables: image matching is responsible for retrieving documents with similar Tables.
Figure 9.1 Documents with Tables.
(2) Images: image matching is responsible for retrieving documents with similar images.
Figure 9.2 Documents with images.
(3) Special Symbols: image matching is responsible for retrieving documents with similar Special Symbols.
Figure 9.3 Documents with Special Symbols.
(4) Figures, Drawing, Designs: image matching is responsible for retrieving documents with similar Figures, Drawing, and Designs.
Figure 9.4 Documents with Figures, Drawing, and Designs.
(5) Maps: image matching is responsible for retrieving documents with similar Maps.
Figure 9.5 Documents with maps.
(6) Hand Written Notes: image matching is responsible for retrieving documents with Hand Written Notes.
Figure 9.6 Documents with handwritten notes.
(7) …
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