David Makovoz

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We present MOPEX a software package for image mosaicking and point source extraction. MOPEX has been developed for the Spitzer Space Telescope. This paper concentrates on the mosaicking aspects of the package. MOPEX features the use of several interpolation techniques, coaddition schemes, and robust and flexible outlier detection based on spatial and(More)
We present the Spitzer Multiband Imaging Photometer 24 m source counts in the Extragalactic First Look Survey (FLS) main, verification, and European Large Area ISO Survey N1 fields. Spitzer’s increased sensitivity and efficiency in large areal coverage over previous infrared telescopes, coupled with the enhanced sensitivity of the 24 m band to sources at(More)
  • D. Makovoz
  • 2006 IEEE International Symposium on Signal…
  • 2006
We present a new method of estimating noise variance. The method is applicable for ID and 2D signal processing. The essence of this method is estimation of the scatter of normally distributed data with high level of outliers. The method is applicable to data with the majority of the data points having no signal present. The method is based on the shortest(More)
We present a generic algorithm for performing astronomical image registration and pointing refinement. The method is based on the matching of positions and fluxes of available point sources in image overlap regions. This information is used to compute a set of image offset corrections by globally minimizing a weighted sum of all matched point-source(More)
We present the reduction of the 24 m data obtained during the first cosmological survey performed by the Spitzer Space Telescope. Images of a region of sky at moderately high Galactic latitude (l 1⁄4 88N3; b 1⁄4 þ34N9) were obtained on 2003 December 9–11. The survey consists of a shallow observation of 2N5 ; 2 centered at 1718, +59 300 (main survey) and a(More)
We present 70 and 160 m observations from the Spitzer extragalactic First Look Survey (xFLS). The data reduction techniques and the methods for producing co-added mosaics and source catalogs are discussed. Currently, 26% of the 70 m sample and 49% of the 160 m–selected sources have redshifts. The majority of sources with redshifts are star-forming galaxies(More)
We propose a nonlinear partial differential equation to control the trade-off between smoothing and segmentation of images. Its solutions approximate discontinuities, thus leading to detection of sharp boundaries in images. The performance of the approach is evaluated by applying it to images obtained by the Multiband Imaging Photometer for Spitzer (MIPS),(More)