Journal ArticleDOI
Bayesian-Based Iterative Method of Image Restoration
TLDR
An iterative method of restoring degraded images was developed by treating images, point spread functions, and degraded images as probability-frequency functions and by applying Bayes’s theorem.Abstract:
An iterative method of restoring degraded images was developed by treating images, point spread functions, and degraded images as probability-frequency functions and by applying Bayes’s theorem. The method functions effectively in the presence of noise and is adaptable to computer operation.read more
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Journal ArticleDOI
An image restoration technique with error estimates
TL;DR: In this article, a wavelet-like multiscale representation of the true image is used to achieve smoothing at all scales of resolution simultaneously, thus capturing detailed features in the image at the same time as larger scale extended features.
Journal ArticleDOI
A deep chandra acis study of NGC 4151. I. the X-RAY morphology of the 3 kpc diameter circum-nuclear region and relation to the cold interstellar medium
Junfeng Wang,Giuseppina Fabbiano,Guido Risaliti,Guido Risaliti,Martin Elvis,Margarita Karovska,Andreas Zezas,Andreas Zezas,Carole Mundell,Gaelle Dumas,Eva Schinnerer +10 more
TL;DR: In this article, Chandra Advanced CCD Imaging Spectrometer (ACIS-S) observations of the nearby Seyfert 1 galaxy NGC 4151 were used to detect X-ray emission along the boundary of the ionization cone, which indicates that gas there is not completely shielded from the nuclear continuum, as would be the case for a molecular torus collimating the bicone.
Journal ArticleDOI
HiRes DECONVOLVED SPITZER IMAGES OF 89 PROTOSTELLAR JETS AND OUTFLOWS: NEW DATA ON THE EVOLUTION OF THE OUTFLOW MORPHOLOGY*
TL;DR: In this paper, a high-resolution deconvolution algorithm, HiRes, was used to improve the visualization of spatial morphology by enhancing resolution (to subarcsecond levels in the IRAC bands) and removing the contaminating side lobes from bright sources.
First Light for the Next Generation of Compton and Pair Telescopes
TL;DR: In this paper, a measurement method for Compton telescopes is applied, capable of detecting tracks from electrons with an energy of 500 keV and higher in a detector consisting of Silicon strip detectors; in principle this allows a unique reconstruction of the incoming photons' direction for Compton events.
Journal ArticleDOI
Chandra Observations of the Young Pulsar PSR B0540–69
Philip Kaaret,Herman L. Marshall,Thomas L. Aldcroft,Dale E. Graessle,Margarita Karovska,S. Murray,Arnold H. Rots,Norbert S. Schulz,F. D. Seward +8 more
TL;DR: In this article, the authors determined a position for young pulsar PSR B0540-69 of R.A. = -69°19'5498 (J2000) with a 1 σ radial uncertainty of 07.082 ± 0.005 (95% confidence).
References
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Book
Modern probability theory and its applications
TL;DR: Probability Theory as the study of Mathematical Models of Random Phenomena as mentioned in this paper is a generalization of probability theory for the study and analysis of statistical models of random variables.
Journal ArticleDOI
Image Evaluation and Restoration
TL;DR: The extent to which the processing approaches the optimum can be evaluated by determining the fraction of the total information content of the image which can be visually extracted after processing.
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Restoration of Turbulence-Degraded Images*
TL;DR: In this paper, the amplitude and phase coefficients of the two-dimensional Fourier series representing the degraded images were corrected by applying corrections to the optical transfer function of the turbulence measured at the time the images were photographed.