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This letter presents a novel method for the description of multispectral image keypoints. The method proposed is based on a modified SIFT algorithm. It uses normalized gradients as local image features for the description of keypoints in order to achieve robustness against non linear intensity changes between multispectral images. The experimental results(More)
Retroelements (including transposons, retrotransposons, retroviruses, and lentiviruses) make up a significant portion of eukaryotic genomes. Given their ability to mutate genes these mobile elements always present a threat to the integrity of the host genomes. Recent studies have revealed complex molecular mechanisms that silence the mutagenic ability of(More)
Recent years have seen social networks gain lot of popularity to share information, connecting millions of people from all over the world. Studying the spread of information, or Information Diffusion in these networks has shaped into a well known field of study with numerous applications in areas such as marketing, politics, and personality evaluation.(More)
A significant number of new Java-based technologies for mobile code (aka agents) have recently emerged. The 'Aglets' system, from IBM's research labs, provides an elegant mechanism for creating mobile code, but lacks a native scheduling mechanism for determining where code should be executed. In this paper we present the results of an investigation into(More)
This paper presents a method for terminating the phase trellis in Multi-h Continuous Phase modulation (CPM). It is shown that tilted phase trellis for a Multi-h CPM signal is periodic and enables the representation of the modulator as the cascade of a periodic recursive continuous phase encoder (CPE) and a phase modulator (PM). We then pose the problem of(More)
This paper presents a novel method for the recognition of ancient characters in historical documents. The method proposed is especially designed for degraded documents in which the character recognition based on state of the art methods is hard to achieve due to faded out ink, stain and background noise. The method proposed deals with such degradations by(More)
This paper presents a novel approach for registration of aerial and satellite farmland imagery. We have used field junctions as features for registration. Geometric properties of a group of neighboring fields connected to the junction are used as junction descriptor. These properties are calculated by fitting a rectangle to the field. Junction descriptor(More)