Lloyd Huff

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  • Richard Brennan, Colin Ware, +8 authors Gerd Glang
  • 2003
ECDIS is evolving from a two-dimensional static display of chart-related data to a decision support system capable of providing real-time or forecast information. While there may not be consensus on how this will occur, it is clear that to do this, ENC data and the shipboard display environment must incorporate both depth and time in an intuitively(More)
We discuss a proposed technique for incorporation of information from a variety of sensors in a video imagery processing pipeline. The auxiliary information allows to simplify computations, effectively reducing number of independent parameters in the transformation model. The mosaics produced by this technique are adequate for many applications, in(More)
This paper discusses technique used for construction of highresolution image mosaic from a video sequence and the synchronously logged camera attitude information. It allows one to infer geometric characteristics of the imaged terrain and hence improve mosaic quality and reduce computational burden. The technique is demonstrated using numerical modeling and(More)
The National Ocean Service (NOS) is investigating the application of GPS vertical positioning of its waterborne hydrographic survey platforms to the measurement of depths directly on the NOS chart datum of Mean Lower Low Water (MLLW). One of the more difficult problems that the NOS has encountered during exploratory testing of the GPS vertical positioning(More)
It has been shown in the past that different ial GPS carrier phase kinematic position accuracy tends to degrade as baseline length increases. This position solution degradation is due to several factors, primarily, errors attributed to the spatial variation of atmospheric delays (and secondly, errors in the satellite orbit). This paper endeavours to assess(More)
BACKGROUND Several different classifications to characterize estuarine systems have been proposed. In this present paper, one of the most important estuaries in North Africa, the Oued Loukkos (Morocco), forms a case-study for proposing a systematic classification of this particular tidal estuary according to the vertical salinity gradient. FINDINGS This(More)
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