14,262 research outputs found

    A multiprocessor implementation of a contextual image processing algorithm

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    There are no author-identified significant results in this report

    On the accuracy of pixel relaxation labeling

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    There are no author-identified significant results in this report

    Pixel labeling by supervised probabilistic relaxation

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    There are no author-identified significant results in this report

    Contextual classification of multispectral image data

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    There are no author-identified significant results in this report

    Variable Dynamic Force Vector Rocket Test Apparatus

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    Design and performance characteristics of variable dynamic force vector rocket test apparatu

    Optimal squeezing, pure states, and amplification of squeezing in resonance fluorescence

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    It is shown that 100% squeezed output can be produced in the resonance fluorescence from a coherently driven two-level atom interacting with a squeezed vacuum. This is only possible for N=1/8N=1/8 squeezed input, and is associated with a pure atomic state, i.e., a completely polarized state. The quadrature for which optimal squeezing occurs depends on the squeezing phase Φ,\Phi , the Rabi frequency Ω,\Omega , and the atomic detuning Δ\Delta . Pure states are described for arbitrary Φ,\Phi , not just Φ=0\Phi =0 or π\pi as in previous work. For small values of N,N, there may be a greater degree of squeezing in the output field than the input - i.e., we have squeezing amplification.Comment: 6 pages & 7 figures, Submitted to Phys. Rev.

    Crop Identification Technology Assessment for Remote Sensing (CITARS)

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    The results of classifications and experiments performed for the Crop Identification Technology Assessment for Remote Sensing (CITARS) project are summarized. Fifteen data sets were classified using two analysis procedures. One procedure used class weights while the other assumed equal probabilities of occurrence for all classes. In addition, 20 data sets were classified using training statistics from another segment or date. The results of both the local and non-local classifications in terms of classification and proportion estimation are presented. Several additional experiments are described which were performed to provide additional understanding of the CITARS results. These experiments investigated alternative analysis procedures, training set selection and size, effects of multitemporal registration, the spectral discriminability of corn, soybeans, and other, and analysis of aircraft multispectral data

    Implementation of ILLIAC 4 algorithms for multispectral image interpretation

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    Research has focused on the design and partial implementation of a comprehensive ILLIAC software system for computer-assisted interpretation of multispectral earth resources data such as that now collected by the Earth Resources Technology Satellite. Research suggests generally that the ILLIAC 4 should be as much as two orders of magnitude more cost effective than serial processing computers for digital interpretation of ERTS imagery via multivariate statistical classification techniques. The potential of the ARPA Network as a mechanism for interfacing geographically-dispersed users to an ILLIAC 4 image processing facility is discussed
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