Image analysis – Image transformation or preprocessing – Changing the image coordinates
Patent
1994-04-21
1995-05-02
Couso, Yon J.
Image analysis
Image transformation or preprocessing
Changing the image coordinates
395425, 3649278, G06K 900
Patent
active
054127408
ABSTRACT:
A signal processing system includes means for performing a logic function on a multi-dimensional array of information stored in a memory. Typically, the memory stores two-dimensional video information (pixels), and the logic function is a discrete cosine transform (DCT), or other linear operation. The logic function is performed on both rows and columns of the information. In the prior art, this has required two memory spaces, so that information could be written into one memory while being read out of another memory. In the present invention, a single memory space is used to transpose the information between row and column format, by performing a read-modify-write operation on each memory location in a specified sequence.
REFERENCES:
patent: 3922642 (1975-11-01), Tooka
patent: 3922643 (1975-11-01), Poole
patent: 4153944 (1979-05-01), Grandle, Jr.
patent: 4918527 (1990-04-01), Penard et al.
patent: 4972495 (1990-11-01), Blike et al.
patent: 5048104 (1991-09-01), D'Aoust et al.
IEEE Transactions on Computers, Jul., 1972, "A Fast Computer Method for Matrix Transposing" by J. O. Eklundh, pp. 801 through 803.
"A Connection Between Bit Reversal and Matrix Transposition: Hardware and Software Consequences", IEEE Transactions on Acoustics, Speech and Signal Processing, vol. 38, No. 11, Nov. 1990 by Pierre Duhamel, pp. 1893-1896.
"Fast Computational Algorithms for Bit Reversal", IEEE Transactions on Computers, vol. C-23, No. 1, Jan. 1974 by Robert J. Polge, B. K. Bhagavan, and James M. Carswell, pp. 1-9.
European Search Report, 18 Aug. 1993.
AT&T Corp.
Couso Yon J.
Fox James H.
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