D. Rajya Lakshmi

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In 2004, Das, Saxena and Gulati proposed a dynamic ID-based remote user authentication scheme which has many advantage such as no verifier table, user freedom to choose and change password and so on. However the subsequent papers have shown that this scheme is completely insecure and vulnerable to many attacks. Since then many schemes with improvements to(More)
In this paper we concentrated on image retrieval system in early days many user interactive systems performed with basic concepts but such systems are not reaching to the user specifications and not attracted to the user so a lot of research interest in recent years with new specifications , recent approaches have user is interested in friendly interacted(More)
—In many real-world applications, the problem of learning from imbalanced data (the imbalanced learningproblem) is a relatively new challenge that has attracted growing attention from both academia and industry. The imbalanced learning problem is concerned with the performance of learning algorithms in the presence of underrepresented data and severe class(More)
Image searching is most interesting in the field of the computer vision. Every day many digital images are coming into the web. User is attracted to automatic image retrieval from this large dataset. Many methods which are introduced in this last ten years for image retrieval based on the similarity, size of database, image classification, similar group of(More)
Image searching is often done in the world of computer visualization. Time and again users get to see many new digital images uploaded on web. They are fascinated towards automatic image retrieval. In the past few years, many methods were introduced to retrieve images which were based on similarity of size and shape of the image. Content Based Image(More)
Databases, libraries of digital image and multimedia are considerably expanded in last few years. The growth of a content-based image retrieval (CBIR) system has become main research issue in order to retrieve the desired images successfully and accurately from a large image database. In this paper we concentrated on image features and features extraction(More)
In content-based image retrieval, interactive systems have attracted a lot of research interest in recent years. Comparatively early systems, which focused on fully automatic strategies, recent approaches have supporting many are concentrated. Assuming that a user is looking for a set of images with similar feature using the query concept within a huge(More)
A detailed analysis of the responses of the equatorial ionosphere to a large number of severe magnetic storms shows the rapid and remarkable collapse of F-region ionisation during post-midnight hours; this is at variance with the presently accepted general behaviour of the low-latitude ionosphere during magnetic storms. This paper discusses such responses(More)
WSNs are characterized by limited resources in terms of communication, computation and energy supply. A critical constraint on sensors networks is that sensor nodes employ batteries. A second constraint is that sensors will be deployed unattended and in large numbers, so that it will be difficult to change or recharge batteries in the sensors .The Energy(More)