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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)
Explicit formulas for the tap-coef®cients of Taylor-series-based full-band FIR digital differentiators have already been presented. However, those formulas were not derived mathematically from the Taylor series and were based on observations of different sets of results. The authors provide a mathematical proof of the formulas by deriving them(More)
The all-sky far-infrared sky survey performed by the Infrared Astronomical Satellite (IRAS), launched in 1983, remains of exceptional value in astronomy. A tool developed during the IRAS mission, the Scan Processing and Integration Tool (Scanpi) has proven indispensable in maximizing the scientific value of the IRAS data. It performs weighted average fluxes(More)
The Spitzer Space Telescope Infrared Array Camera (IRAC) basic calibrated data reduction pipeline is designed to take a single raw frame from a single IRAC detector and produce a flux-calibrated image that has had all well-understood instrumental signatures removed. We discuss several modifications to the pipeline developed in the last two years in response(More)
In this paper WBF (Wavelet Based Features) and LDA (Linear Discriminative Analysis) and PCA (Principal Component Analysis) is used to recognize spoken digits from 0 to 9 in Hindi. The main objective of this work is to find out the wavelet mother that better recognize the spoken hindi digits. Thirty six experiments are carried out with six different wavelets(More)
A new type of Taylor series based 2-D finite difference approximation is presented, and it is shown that the coefficients of these approximations are not unique. Explicit formulas are presented for one of the possible sets of coefficients for an arbitrary order, by extending the previously presented 1-D approximations. These coefficients are implemented as(More)
Under the unpredictable behavior of monsoon in Central India, faster seedbed preparation and timely sowing are critical factors to achieve higher soybean [Glycine max (L.) Merrill] yield. Therefore, a “tractor-drawn ridge fertilizer drill cum seed planter” hitched to the three-point linkage system of the tractor was conceived, fabricated, and farm validated(More)
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