Image analysis – Image compression or coding – Transform coding
Patent
1997-10-02
2000-12-12
Boudreau, Leo H.
Image analysis
Image compression or coding
Transform coding
382251, 382166, 708400, G06K 936
Patent
active
061609188
ABSTRACT:
An image compression scheme uses a reversible transform, such as the Discrete Hartley Transform, to efficiently compress and expand image data for storage and retrieval of images in a digital format. The image data is divided into one or more image sets, each image set representing a rectangular array of pixel data from the image. Each image set is transformed using a reversible transform, such as the Hartley transform, into a set of coefficients which are then quantized and encoded using an entropy coder. The resultant coded data sets for each of the compressed image sets are then stored for subsequent expansion. Expansion of the stored data back into the image is essentially the reverse of the compression scheme.
REFERENCES:
patent: 4947447 (1990-08-01), Miyaoka et al.
patent: 5339265 (1994-08-01), Liu et al.
patent: 5341442 (1994-08-01), Barrett
patent: 5430556 (1995-07-01), Ito
patent: 5491761 (1996-02-01), Kim
patent: 5615020 (1997-03-01), Keith
patent: 5696507 (1997-12-01), Nam
patent: 5754457 (1998-05-01), Eiton
patent: 5850484 (1998-12-01), Beretta et al.
Bracewell, Affine theorem for the Hartley Transform of an Image, IEEE vol. 82, No. 3, pp. 388-390, 1994.
Xingming et al., The Fast Hartley Transform on the Hypercube, ACM 0-89791-273-X/88/0007 pp. 1451-1454, 1988.
Arai et al., A Fast DCT-SQ Scheme for Images, IEICE vol. E 71 No. 11, pp. 1095-1097, 1988.
Poularikas, The Transform and Applications, Handbook, IEEE Press, pp. 281-285, 1995.
"A More Symmetrical Fourier Analysis Applied to Transmission Problems", R. V. L. Hartley, Proceedings of the I.R.E., Mar. 1942, pp. 144-150.
"Discrete Hartley Transform", R. N. Bracewell, J. Opt. Soc. Am., vol. 73, No. 12, Dec. 1983, pp. 1832-1835.
"The Fast Hartley Transform", Ronald N. Bracewell, Proceedings of the IEEE, vol. 72, No. 8, Aug. 1984, pp. 1010-1018.
"Fast Two-Dimensional Hartley Transform", R. N. Bracewell, et al., Proceedings of the IEEE, vol. 74, No. 9, Sep. 1986, pp. 1282-1283.
"Structured Fast Hartley Transform Algorithms", C. P. Kwong and K. P. Shiu, IEEE Transactions on Acoustics, Speech, and Signal Processing, vol. ASSP-34, No. 4 Aug. 1986, pp. 1000-1002.
"Improved Fourier and Hartley Transform Algorithms: Application to Cyclic Convolution of Real Data", Pierre Duhamel and Martin Vetterli, IEEE Transaction on Acoustics, Speech, and Signal Processing, vol. ASSP-35, No. 6, Jun. 1987, pp. 818-824.
AT&T Corp.
Boudreau Leo H.
Sherali Ishrat
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