Hadamard transform infrared astronomical imaging device

Slingerland, J.

doi:10.1063/1.1134540

Cited by 3 publications

(1 citation statement)

References 17 publications

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“…Hadamard transforms have been used previously in microscopy ( Treado & Morris, 1990; Mei et al ., 1996 ; Hanley et al ., 1999a ), as well as in optical spectroscopy ( Hammaker et al ., 1995 ; Harwit & Sloane, 1979), magnetic resonance imaging ( Gonen et al ., 1998 ), mass spectrometry ( Brock et al ., 1998 ) and a variety of other imaging applications ( Slingerland, 1976; Harwit & Sloane, 1979). In the present context, the primary advantage of the technique is that it provides for the efficient encoding of a third dimension onto a two‐dimensional detector, thereby avoiding the loss of photons and time that would otherwise make acquisition of 3‐D spectral images prohibitive.…”

Section: Hadamard Transformsmentioning

confidence: 99%

Three‐dimensional spectral imaging by Hadamard transform spectroscopy in a programmable array microscope

Hanley

Verveer

Arndt‐Jovin

et al. 2000

Journal of Microscopy

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SummaryWe report the acquisition and deconvolution of threedimensional spectrally resolved images in a programmable array microscope implementing a Hadamard transform fluorescence spectroscopy system with adjustable spectral resolution. A stack of 16 two-dimensional spectral images was collected at 400 nm intervals along the optical axis. The specimen consisted of a polytene chromosome spread from Drosophila melanogaster doubly labelled for the Polyhomeotic protein by indirect immunofluorescence labelling with Alexa594 and for DNA with YOYO-1. The resulting four-dimensional data set consisted of the xyz spatial dimensions (898 × 255 × 16) with a 26-point spectrum at each spatial location. The total exposure time to the sample was 34 min. The system requires the acquisition of multiple images, and thus works best with fluorophores that are resistant to photobleaching. Image deconvolution reduced the amount of out-of-focus blur by up to a factor of 8, resulting in a dramatic improvement in the visualization of the chromosome backbone and localization of the specific Polyhomeotic domains.

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Section: Hadamard Transformsmentioning

confidence: 99%

Three‐dimensional spectral imaging by Hadamard transform spectroscopy in a programmable array microscope

Hanley

Verveer

Arndt‐Jovin

et al. 2000

Journal of Microscopy

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Bibliography

1979

Hadamard Transform Optics

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A discussion on data reduction in spectrometric measurements, Infrared Phys. 12: 251-261. Chandler, G. G. (1968), Optimization of a 4-m asymmetric Czerny-Turner spectrograph, J. Opt. Soc. Amer. 58: 895-899. Chester, T. L., J. J. Fitzgerald, and J. D. Winefordner (1976), Theoretical comparison of the signal-to-noise ratios of Fourier transform spectrometry with single slit linear an slewed scan spectrometric methods for the photon noise limited situation, Analyt. Chem. 48: 779-783. Clements, G. F. and B. Lindström (1965), A sequence of (± 1)-determinants with large values, Proc. Amer. Math. Soc. 16: 548-550. Cochran, W. T. et al. (1967), What is the fast Fourier transform? (1977), A multiplex technique for astronomical imagery in the infrared, Infrared Physics 17: 305-310. DeGraauw, Th. and B. P. Th. Veltman (1970), Pseudo-random binary sequences for multiplex codes, Appl. Opt. 9: 2658-2660. DeVelis, J. B. and G. O. Reynolds (1967), Theory and Applications of Holography, Reading, Mass.: Addison-Wesley. Decker, J. Α., Jr. (1971), Experimental realization of the multiplex advantage with a Hadamard-transform spectrometer, Appl. Opt. 10: 510-514. Decker, J. Α., Jr. (1971a), Experimental operation of a 2047-slot Hadamard-transform spectrometer, Appl. Opt. 10: 1971-1972. Decker, J. Α., Jr. (1971b), A new IR-spectrometer with multislit arrays (Hadamardtransform spectrometer), pp. 102-106 of Proc. XVI Colloq. Spect. Inter., Heidelberg. London: Adam Hilger. Decker, J. Α., Jr. (1971c), Hadamard-transform exhaust-analysis spectrometer, Appl. Opt. 10: 24-27. Decker, J. Α., Jr. (1972), Hadamard transform analytical spectrometer, Instrumental Society of America: Analysis Instrumentation 10: 49-54. Decker, J. Α., Jr. (1972a), Hadamard-transform spectrometry: a new analytical technique, with solids: a theoretical treatment, Science 190: 556-557. Rosencwaig, A. and A. Gersho (1976), Theory of the photoacoustic effect with solids, J. Appl. Phys. 47: 64-69.

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Self-supporting perfect masks for 2-D infrared and x-ray imaging

Giles

1981

Appl. Opt.

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A number of methods have been described in the past that use coded mask techniques for spectroscopy or 2-D imaging at IR and x-ray wavelengths. Mathematically, several types of perfect mask exist, and this paper presents a series of polynomials of the PN sequence variety that naturally form self-supporting structures. The masks do not use row and column transpositions and do not rely entirely on corner-to-corner contacts.

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Hadamard transform infrared astronomical imaging device

Cited by 3 publications

References 17 publications

Three‐dimensional spectral imaging by Hadamard transform spectroscopy in a programmable array microscope

Three‐dimensional spectral imaging by Hadamard transform spectroscopy in a programmable array microscope

Bibliography

Self-supporting perfect masks for 2-D infrared and x-ray imaging

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