Image analysis – Image compression or coding – Pyramid – hierarchy – or tree structure
Reexamination Certificate
2005-06-07
2005-06-07
Couso, Yon J. (Department: 2625)
Image analysis
Image compression or coding
Pyramid, hierarchy, or tree structure
C348S298000
Reexamination Certificate
active
06904175
ABSTRACT:
A wavelet-based image compression system and method are presented. Compression is accomplished by performing a wavelet transformation of an input digital image. The resulting wavelet coefficients are compared to a threshold value. Coefficients falling below the threshold are discarded. The remaining coefficients are quantized. The quantized coefficients are then compressed using an entropy encoding technique, such as arithmetic, run length, or Huffman encoding, or a combination of Huffman and run length encoding. The wavelet transform can be an integer wavelet transform derived using a lifting scheme or correction method, while the quantization scheme can be sub-band oriented. Input color image pixels can be reduced using a color table. In addition, color pixels can be transformed between color spaces prior to wavelet transformation.
REFERENCES:
patent: 5014134 (1991-05-01), Lawton et al.
patent: 5101446 (1992-03-01), Resnikoff et al.
patent: 5241395 (1993-08-01), Chen
patent: 5412741 (1995-05-01), Shapiro
patent: 5414780 (1995-05-01), Carnahan
patent: 5420636 (1995-05-01), Kojima
patent: 5453945 (1995-09-01), Tucker et al.
patent: 5495292 (1996-02-01), Zhang et al.
patent: 5600373 (1997-02-01), Chui et al.
patent: 5604824 (1997-02-01), Chui et al.
patent: 5615287 (1997-03-01), Fu et al.
patent: 5640159 (1997-06-01), Furlan et al.
patent: 5682152 (1997-10-01), Wang et al.
patent: 5748786 (1998-05-01), Zandi et al.
patent: 5754793 (1998-05-01), Eom et al.
patent: 5757974 (1998-05-01), Impagliazzo et al.
patent: 5764805 (1998-06-01), Martucci et al.
patent: 5828849 (1998-10-01), Lempel et al.
patent: 5835145 (1998-11-01), Ouyang et al.
patent: 5845041 (1998-12-01), Ohkuma et al.
patent: 5880856 (1999-03-01), Ferriere
patent: 5881176 (1999-03-01), Keith et al.
patent: 5901249 (1999-05-01), Ito
patent: 5923785 (1999-07-01), Dube
patent: 6144773 (2000-11-01), Kolarov et al.
patent: 6222881 (2001-04-01), Walker
Lipschutz et al., Discrete Mathematics, 1997, McGraw Hill, Second Edition, p. 55.
Said et al., An Image Multiresolution Representation for Lossless and Lossy Compression, Sep. 1996, pp. 1303-1310, IEEE Trans. on Image Processing, vol. 5, No. 9.
Chao Hongyang
Fisher Howard P.
Fisher Paul S.
Hua Zeyi
Couso Yon J.
Ostrolenk Faber Gerb & Soffen, LLP
Vianet Technologies, Inc.
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