Boots – shoes – and leggings
Patent
1997-08-15
1999-01-12
Ngo, Chuong Dinh
Boots, shoes, and leggings
G06F 1714
Patent
active
058597883
ABSTRACT:
A fast modulated lapped transform (MLT) method and architecture for image compression and decompression systems minimizes blocking artifacts associated with JPEG based discrete cosine transform (DCT) image compression systems. The MLT method combines fast block processing capabilities of wavelet transforms and fast block processing of DCT image compression systems. The modular and pipeline MLT architecture is fast by block processing but avoids the visual blocking artifacts that can be seen in most DCT-based compression systems. Improved MLT processors are implemented by an infinite impulse response filter operating on a product of the MLT window function and the input data stream. Forward and reverse MLT processors include a new fused multiply-add logic for fast computations and localized interconnections. The MLT processors can be combined into a bank of parallel processors in a one dimensional MLT architecture, which can be used for two-dimensional image transformation. The improved MLT implementation enables a modular architecture having a reduce number of multipliers and interconnects well suited for practical VLSI implementation.
REFERENCES:
patent: 5408425 (1995-04-01), Hou
patent: 5715280 (1998-02-01), Sandberg et al.
Murthy et al. "On the Hardware Implementation of the Lapped Orthogonal Transform and the Modulated Lapped Transform", IEEE, pp. 745-748, 1992.
"On Computing the 2-D Modulated Lapped Transform in Real-Time", E. Frantzeskakis and H.C. Karathanasis, Journal VLSI Signal Processing VI, IEEE Press, pp. 361-369, 1993.
"Time-Recursive Computation and Real-Time Parallel Architectures, With Application on the Modulated Lapped Transform", E. Frantzeskakis, J.S. Baras, K.J. Ray Liu, SPIE vol. 2027, pp. 100-111, 1993.
"Signal Processing With Lapped Transforms", H.S. Malvar, Norwood, MA, Artech House, 1992, pp. 175-218.
"Extended Lapped Transforms: Properties, Applications and Fast Algorithms", H.S. Malvar, IEEE Transactions on Signal Processing, vol. 40, pp. 2703-2714, Nov. 1992.
"Overlapping Block Transform: Window Design, Fast Algorithm and an Image Coding Experiment", M. Temerinac & B. Edler, IEEE Transactions on Communications, vol. 43, pp. 2417-2425, Sep. 1995.
"A VLSI Architecture for the Real-Time Computation of Discrete Trigonometric Transforms", J. Canaris, J. VLSI Signal Processing, vol. 5, pp. 95-104, 1993.
Ngo Chuong Dinh
Reid Derrick Michael
The Aerospace Corporation
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