Image analysis – Image compression or coding
Patent
1995-10-26
1998-06-02
Couso, Jose L.
Image analysis
Image compression or coding
G06K 936
Patent
active
057613419
ABSTRACT:
A digitized image is encoded by detecting edges in the image, encoding the position and sharpness of the detected edges, smoothing and reducing the size of the digitized image, and encoding the resulting reduced image. A digitized image encoded in this way is reconstructed by generating a horizontal edge image and a vertical edge image, or a horizontal edge image, a vertical edge image, and a diagonal edge image, from the encoded edge position and sharpness information, smoothing each of these edge images by a series of filters to obtain a series of edge images, filtering each edge image in each series with an edge synthesis filter to synthesize a high-frequency image, decoding the reduced image, and performing an inverse wavelet transform on the decoded reduced image and the high-frequency images.
REFERENCES:
patent: 5420636 (1995-05-01), Kojima
patent: 5481269 (1996-01-01), Imhoff et al.
patent: 5546477 (1996-08-01), Knowles et al.
patent: 5561724 (1996-10-01), Kido et al.
patent: 5598481 (1997-01-01), Nishikawa et al.
patent: 5661822 (1997-08-01), Knowles et al.
Staphane Mallat et al, "Compact Image Coding from Edges with Wavelets", ICASSP Proceedings, IEEE, 1991, pp. 2745-2748.
R. Montufar-Chaveznava et al. "Astronomical Image Coding using an Edge and Texture Model", Proceedings of the IEEE-SP International Symposium on Time-Frequency and Time-Scale Analysis, 25-28 Oct. 1994, pp. 148-151.
IEEE Transaction on Communications, vol. No. 4, Apr. 1983, pp. 532-540. P.J. Burt et al. "The Laplacian Pyramid as a Compact Image Code".
ICASSP 91: 1991 International Conference on Acoustics, Speech, and Signal Processing, Toronto, Ontario, Canada, 14-17 May 1991 pp. 2745-2748. Mallat et al. "Compact Image Coding from Edges with Wavelets".
Couso Jose L.
OKI Electric Industry Co., Ltd.
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