Image analysis – Image compression or coding – Shape – icon – or feature-based compression
Reissue Patent
2006-11-20
2011-10-18
Alavi, Amir (Department: 2624)
Image analysis
Image compression or coding
Shape, icon, or feature-based compression
C382S248000, C382S232000, C382S250000, C382S173000
Reissue Patent
active
RE042853
ABSTRACT:
It is known to represent a square block of an image which has a maximum horizontal or vertical extension N as N vectors each representing one column or row, and encode it using an N×N discrete cosine transform matrix. We introduce a technique which transforms an input vector, or array, representing a portion of an arbitrarily-shaped object block in which the maximum horizontal or vertical extension is at most N, by adding to it additional padding elements, to produce a vector or array which can be encoded using an N×N discrete cosine transform. The padding maximises the number of transformed elements which are zero. We propose encoding arbitrarily-shaped objects based on this padding technique.
REFERENCES:
patent: 4602383 (1986-07-01), Ogawa et al.
patent: 4742552 (1988-05-01), Andrews
patent: 5422963 (1995-06-01), Chen et al.
patent: 5666212 (1997-09-01), Gilge
patent: 5734755 (1998-03-01), Ramchandran et al.
patent: 5946419 (1999-08-01), Chen et al.
patent: 5949919 (1999-09-01), Chen
patent: 5959673 (1999-09-01), Lee et al.
patent: 5990956 (1999-11-01), Lee
patent: 6037988 (2000-03-01), Gu et al.
patent: 6078694 (2000-06-01), Takahashi et al.
patent: 6154570 (2000-11-01), Boon
patent: 6233279 (2001-05-01), Boon
patent: 6259732 (2001-07-01), Lee
patent: 6356587 (2002-03-01), Choi
patent: 6483874 (2002-11-01), Panusopone et al.
patent: 6501861 (2002-12-01), Cho et al.
patent: 6516094 (2003-02-01), Takahashi et al.
patent: 6591018 (2003-07-01), Okuno et al.
patent: 6718066 (2004-04-01), Shen et al.
patent: 6842177 (2005-01-01), Garg et al.
patent: 6888892 (2005-05-01), Chung et al.
Notice of Allowability, mailed Sep. 23, 2003, for U.S. Appl. No. 09/637,883, 5 pages.
H. H. Chen et al, “A Block Transform Coder for Arbitrarily Shaped Image Segments,” IEEE Xplore, Apr. 28, 2010, 5 pages.
P. Kauff et al, “Shape-Adaptive DCT with Block-Based DC Separation and Δ-DC Correction,” IEEE Transactions on Circuits and Systems for Video Technology, vol. 8, No. 3, Jun. 1998, 6 pages.
T. Sikora, “Low complexity shape-adaptive DCT for coding of arbitrarily shaped image segments”, Signal Processing: Image Communication, vol. 7, No. 4-6, Nov. 1995, pp. 381-395.
J.-W. Yi et al, “A new coding algorithm for arbitrarily shaped image segments”, Signal Processing: Image Communication, vol. 12, No. 3, Jun. 1998, pp. 231-242.
Liou Ming
Shen Guobin
Zeng Bing
Alavi Amir
Schwabe Williamson & Wyatt P.C.
The Hong Kong University of Science and Technology
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