Image analysis – Image compression or coding – Including details of decompression
Patent
1997-08-22
1999-06-08
Au, Amelia
Image analysis
Image compression or coding
Including details of decompression
382235, 382250, 382268, G06K 936, G06K 946
Patent
active
059110074
ABSTRACT:
An image processing apparatus for orthogonally transforming image information in a block comprising NXN pixels, and creating block information composed of MXM pixels (N.noteq.M) on the basis of the information orthogonally transformed. The created block information is reverse transformed into real spatial information having MXM pixels. The reverse transformation is performed using a basic vector other than a transposed matrix of an orthogonal transformation matrix of MXM pixels.
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Chang et al., "Transform Coding of Arbitrarily-Shaped Image Segments", Aug. 1, 1993, pp. 83-90.
Haddad et al., "Digital Signal Processing Theory, Applications, and Hardware", 1991, pp. 408-411.
Haddad et al., Digital Signal Processing--Theory, Applications, and Hardware, 1991, pp. 408-410, Textbook.
Au Amelia
Canon Kabushiki Kaisha
Johnson Timothy M.
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