Sankar Krishnamurthy

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We present a new edge detector for automatic extraction of oceanographic (mesoscale) features present in in-frared (IR) images obtained from the Advanced Very High Resolution Radiometer (AVHRR). Conventional edge detectors are very sensitive to edge fine structure, which makes it difficult to distinguish the weak gradients that are useful in this(More)
during the summers of '93 and '94. Thanks are also due to Ron Holyer and Matthew Lybanon of the Naval Research Laboratory, John C. Stennis Space Center, for providing satellite images for testing some of the techniques described in this dissertation. I would like to thank Lakshman Prasad, Ajit Pendse, Amit Nanavati and Dr. Daryl Thomas for many enlightening(More)
BACKGROUND Inflammatory markers (IM) are elevated in atrial fibrillation (AF). However the relation of IM to substrate modificationinAF remains unclear.We sought to assess the relationship of IM to fractio ated atrial electrogram (FAE) in patients undergoing AF ablation. METHODS At baseline, left atrial (LA) pressure was recorded and peripheral blood was(More)
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