399 research outputs found

    An Efficient Image Denoising Approach for the Recovery of Impulse Noise

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    Image noise is one of the key issues in image processing applications today. The noise will affect the quality of the image and thus degrades the actual information of the image. Visual quality is the prerequisite for many imagery applications such as remote sensing. In recent years, the significance of noise assessment and the recovery of noisy images are increasing. The impulse noise is characterized by replacing a portion of an image's pixel values with random values Such noise can be introduced due to transmission errors. Accordingly, this paper focuses on the effect of visual quality of the image due to impulse noise during the transmission of images. In this paper, a hybrid statistical noise suppression technique has been developed for improving the quality of the impulse noisy color images. We further proved the performance of the proposed image enhancement scheme using the advanced performance metrics

    An Efficient Image Denoising Approach for the Recovery of Impulse Noise

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    Image noise is one of the key issues in image processing applications today. The noise will affect the quality of the image and thus degrades the actual information of the image. Visual quality is the prerequisite for many imagery applications such as remote sensing. In recent years, the significance of noise assessment and the recovery of noisy images are increasing. The impulse noise is characterized by replacing a portion of an image’s pixel values with random values Such noise can be introduced due to transmission errors. Accordingly, this paper focuses on the effect of visual quality of the image due to impulse noise during the transmission of images. In this paper, a hybrid statistical noise suppression technique has been developed for improving the quality of the impulse noisy color images. We further proved the performance of the proposed image enhancement scheme using the advanced performance metrics

    The Bow and Arrow in Sangam Literature

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    Scholars point out that the Sangam period dates back to the Veerayuga period. It is also believed to be the Iron Age. Society in the longest hierarchy of mankind. It can be seen from the association's work that the various types have evolved and evolved into different stages. The association work is not complete and does not belong to the same period, and there is ample evidence to learn about the different ethnic community in the association. Exoduses speak of emotional departmental discipline and Exodus speaks of heroic battles. Songs praising the war also showcase the weapons. Data on tools such as bows and arrows are also available. The bow and arrow are symbolically identified with certain concepts with a social background. The bow and arrow set out to illustrate societal evolution and biological values. The purpose of this article is to discuss the movements of the bow and arrow community, although numerous weapons are found in literary references

    Proline-catalysed asymmetric ketol cyclizations: the template mechanism revisited

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    A modified template mechanism based on modelling studies of energy minimised complexes is presented for the asymmetric proline-catalysed cyclization of triketones1,2 and3 to the 2S,3S-ketols1a,2a and3a respectively. The template model involves a three-point contact as favoured in enzyme-substrate interactions. Our minimisation studies are in agreement with the divergent behaviour of the 6,5-, 6,6-and 6,7-bicyclic systems. They support the high 93.4%ee observed with the 6,5-bicyclic ketol and the lower 73%ee found with the 6,6-bicyclic ketol. The calculations also explain the lack of asymmetric induction with the 6,7-bicyclic system

    A NOVEL DESIGN APPROACH IN REGULATOR SYSTEM FOR ENERGY CONSERVATION

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    Abstract—in currently conservation of the electricity is a vital factor which is effectively involved in economy of electricity generation. This paper presents a novel idea to save the electrical energy in the regulator. The energy consumed by any fan is not reduced by the regulator. The energy consumed becomes two parts. One is lost as heat energy in the regulator and the balance is used for rotating the fan. Even though fan runs slow, it consumes the same energy as it runs fast. In this new regulator, inductors are used instead of resistors. Resistor converts the electricity into heat but inductor converts it into emf and another inductor produces the same electricity from that emf. Since step up transformer is used serious with the fan. The consumed power by the transformer is returned and remaining power only can be consumed by the fan. If we use this technique, we can save 35- 38% of electricity. We can also control more than ten fans by using single regulator. It is hoped that this small product can make a big change in the power consumption. Keywords—Energy saving regulator, AC voltage controller, Step up transformer based regulator, Series transformer

    Phylogenetic Diversity of Bacterial Community Associated with the Marine Sponge Halichondira nigrocutis Collected off Southwest Indian Coast

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    This study aimed to evaluate the bacterial communities associated with the marine sponge Halichondria nigrocutis present in Indian waters by both cultivation and cultivation-independent techniques. Results using cultivation method showed that bacteria belonging to Bacillus, Acinetobacter and Vibrio spp. to be the predominant groups. Metagenomic study of sponge-associated bacteria by cultivation independent approach, involving cloning and sequencing of the 16S rDNA gene generated sequences that were subjected to phylogenetic analysis. Results demonstrated the community structure to be represented by the phyla Proteobacteria (alpha-, gamma- and delta-classes), Cyanobacteria, Actinobacteria and Firmicutes, with isolates belonging to alpha-proteobacterial group to be predominating. To our knowledge this study appears to be the first to record cultivable and uncultivable bacterial groups associated with H.nigrocutis from Indian waters
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