Results 221 to 230 of about 2,149,393 (281)
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Discrete Pseudo-Fractional Hadamard Transform and its Fast Algorithm
IEEE Signal Processing Letters, 2020In this paper a new discrete fractional transform for data vectors whose size $N$ is a power of two is proposed. The basic operation of the introduced transform is a discrete fractional Hadamard transform. Since the described transform is not a classical
D. Majorkowska-Mech, A. Cariow
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High Resolution Hadamard Transform Spectrometer
Applied Optics, 1972The ir spectrometer described employs alkaline halide lenses, an echelle grating, and a cryogenically cooled doped germanium bolometer as a detector. It is provided for two possible modes of operation: one is a single slit or conventional scan, the other is a multiplex or Hadamard scan.
Hansen, Peter, Strong, John
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Two Asymmetric Hadamard Transform Spectrometers
Applied Optics, 1974We develop the theory of operation for dispersive spectrometers that modulate radiation at both the entrance and exit apertures by means of Hadamard codes. Specifically, we examine the operation of instruments illuminated by a beam of radiation known to be homogeneous.
M, Harwit +3 more
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Sequencing the Hadamard transform
IEEE Transactions on Audio and Electroacoustics, 1973The fast computational algorithm based on matrix Kronecker products yields the Hadamard transform in a scrambled order of sequencies. A computational algorithm is developed to arrange the transform in an increasing order of sequencies. The unscrambling is achieved by exchanges of components and requires no additional storage.
B. Bhagavan, R. Polge
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1975
This chapter is devoted to the study of the Walsh-Hadamard transform (WHT), which is perhaps the most well-known of the nonsinusoidal orthogonal transforms. The WHT has gained prominence in various digital signal processing applications, since it can essentially be computed using additions and subtractions only. Consequently its hardware implementation
Nasir Ahmed, Kamisetty Ramamohan Rao
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This chapter is devoted to the study of the Walsh-Hadamard transform (WHT), which is perhaps the most well-known of the nonsinusoidal orthogonal transforms. The WHT has gained prominence in various digital signal processing applications, since it can essentially be computed using additions and subtractions only. Consequently its hardware implementation
Nasir Ahmed, Kamisetty Ramamohan Rao
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[1988] Proceedings. The Twentieth Southeastern Symposium on System Theory, 2003
A four-level Hadamard transform that is more general than the binary Hadamard transform is presented. The transform maintains the same row orthogonality as the binary Hadamard transform but requires the use of complex numbers. A four-level Walsh transform is also obtained from the four-level Hadamard transform.
J.J. Komo, null Yuan Chengchi
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A four-level Hadamard transform that is more general than the binary Hadamard transform is presented. The transform maintains the same row orthogonality as the binary Hadamard transform but requires the use of complex numbers. A four-level Walsh transform is also obtained from the four-level Hadamard transform.
J.J. Komo, null Yuan Chengchi
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Hadamard Transform Spectroscopy
1980Fourier Transform Interferometry has become a useful tool in infrared spectroscopy. These instruments require very exacting optics and mechanical alignments which require micrometer accuracy in mirror alignments and the measurement of mirror displacement.
C. S. Bartholomew +2 more
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Hadamard Transform Raman Imaging
Applied Spectroscopy, 1988Hadamard mask encoding allows medium to high spatial resolution imaging with unfocused laser beams. A laser beam is imaged on the sample through a series of masks. The spatially encoded signals from each of n masks, each containing n resolution elements, are measured. The spatial distribution of the signal is recovered by Hadamard transformation of the
Patrick J. Treado, Michael D. Morris
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Rationalized Hadamard-haar Transform
1977 11th Asilomar Conference on Circuits, Systems and Computers, 1977. Conference Record., 2005A hybrid version of Haar (HT) and Walsh-Hadamard transforms (WHT) called Hadamard-Haar trans form (HHT)r which effectively combines the advantages of both the transforms has been developed. Recently HT has beet rationalized such that the Powers of Y'2 are replaced by integer powers of 2 [11-131.
K.R. Rao, A. Jalali
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Parametric Slant-Hadamard transforms
SPIE Proceedings, 2003The purpose of this paper is to develop a class of generalized parametric Slant-Hadamard transform of order (formula available in paper)where k is an arbitrary integer and to present its fast algorithm. As special cases of this class are the classical Slant-Hadamard (k=2 and β N =1), the generalized Slant-Hadamard (β N =1), and the parametric Slant-
Sos S. Agaian +2 more
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