International Journal of Computer Techniques

1-6

Authors: - IJCTK.Geetha Rani , B.Banu Priya , S.Gayathri , J.Jetlish Stephani

Data hiding technique can be used to embed a secret message into a compressed video. This new video data hiding method makes use of erasure correction capability of Repeat Accumulatecodes and superiority of Data Hiding. Flexible Macroblock used for message hiding and unhiding. This method withstands frame drop and insert attacks. The proposed solutions are analyzed in terms of message extraction accuracy, excessive bit rate and quality distraction. RSA algorithm is used for key generation. The cover video is divided into number of frames in which the data can be hidden into blocks of frame. The video which contains secret data is called stegno video. The extraction of data is done using FMO technique

11-16

Authors: - IJCTMinu Inba Shanthini W.B , Vignesh. R , John Shajio.T , Vijay Raj.D

Crack detection in road pavements and objects has been a constant field of research in pavement management. Conventionally, humans were engaged to detect cracks in the pavements and they used to present report sheets based on their assessment. But, this process was a time consuming one and was costlier too. So, researchers were trying for minimizing the human involvement and at the same time detecting the cracks precisely. This gave way to numerous automated techniques for the detection of cracks. In the below paper, an automated technique to detect cracks in road pavements by means of digital image processing is proposed . In Some conditions such as complex texture, bad illumination, and non-uniform background in images may influence the accuracy of the automatic system. In this technique we propose a automated detection of crack area in the road pavement from the road surface video footage. First, the images required are processed by gray scale morphological processing. The result is received by filtering the images and then applying the edge detection operators. Based on applying shape based image retrieval algorithm, the particular defective area can be retrieved. These results are simulated through computer software tool using MATLAB VERSION 7.9

23-28

Authors: - IJCTAneesh Chacko , Kavitha R

Smart phones are becoming more sophisticated and consist of many sensors. GPS, vision, audio, light, temperature, direction, and acceleration sensors are few. In smart phones, sensors make human activity recognition better and easier. Accelerometer and Gyroscope are available in most of the smart phones and made data collection easy. In this work twelve different statistical measures are extracted as a feature from the raw data collected by these sensors. LDA and KNN classifiers are used to classify the activity

35-42

Authors: - IJCTAkansha Singh , Krishna Kiruba R , Dr. D.C. Joy Winnie Wise

Mobile Ad-Hoc Network is a self configurable network. It will establish a network in on demand manner especially for battlefield communications. In such applications, intergroup communication is crucial to the team collaboration. To address this weakness, in this paper a new class of ad-hoc network called Flying Ad-Hoc Networks (FANETs) is introduced. A distributed client tracking solution to deal with the dynamic routing nature of client mobility, and present techniques for dynamic topology adaptation in accordance with the mobility pattern of the clients is proposed. The proposed system is two different routing algorithms for ad hoc networks: Optimized Link-State Routing (OLSR), and Predictive-OLSR (P-OLSR). The latter is an OLSR extension that is designed for FANETs. It takes advantage of the GPS information available on board.The simulation results indicate that FANET is robust against network partitioning and capable of providing high relay throughput for the clients. Depending on the high mobility of FANET nodes, the topology changes more frequently than the network topology of a typical MANET or even VANET. Multi-UAV systems may include different types of sensors, and each sensor may require different data delivery strategies

46-52

Authors: - IJCTT.Nandhini , M.Saratha

Images are being used in many fields of research. One of the major issues of images is their resolution. In this paper we are studying different image resolution enhancement techniques that use Wavelet Transform (WT). Basis functions of the WT are small waves located in different times. They are obtained using scaling and translation of a scaling function and wavelet function Therefore, the WT is localized in both time and frequency. In this method is used to improve the image resolution for different type of images. In this paper we are comparing different image resolution enhancement techniques those using Wavelet Transform. In this correspondence, the authors propose an image resolution enhancement technique based on interpolation of the high frequency subband images obtained by discrete wavelet transform (DWT) and the input image. The edges are enhanced by introducing an intermediate stage by using stationary wavelet transform (SWT). DWT is applied in order to decompose an input image into different subbands. Then the high frequency subbands as well as the input image are interpolated. The estimated high frequency subbands are being modified by using high frequency subband obtained through SWT. Then all these subbands are combined to generate a new high resolution image by using inverse DWT (IDWT). The quantitative and visual results are showing the superiority of the proposed technique over the conventional and state-of- art image resolution enhancement techniques.

58-64

Authors: - IJCTMr.S.Sambasivam , K.Kavitha

School Information Management System (SIMS) provides a simple interface for maintenance of students, staffs, and parent’s information. It can be used by graduate school to maintain the records of admin easily. The creation and management of accurate, up-to-date information regarding a students’, staffs’ academic career is critically important in the schools. School information system deals with all kind of student details, staff details, parent’s details, academic related reports, school details, course details, curriculum, batch details and other resource related details too. It tracks all the details of a student from the day one to the end of the course which can be used for all reporting purpose, tracking of attendance, progress in the course, completed years, coming year curriculum details, exam details, project or any other assignment details, final exam result and all these will be available through a secure. It will also have faculty details, faculty promotion details, batch execution details, students’ details in all aspects, the various academic notifications to the staff and students updated by the college administration. It also facilitates us explore all the activities happening in the college, Different reports and Queries can be generated based on vast options related to students, batch, course, faculty, exams, certification and even for the entire school.

78-81

Authors: - IJCT Jinchao Guo, Jiuhui Pan

The Suffix tree is a versatile data structure in string processing. Among the available construction algorithms, the algorithms based on suffix links are popular because they can operate online in linear time. However, the original algorithm based on node-oriented suffix links takes too much time to look up the correct branch. To improve the efficiency, our approach creates suffix links between edges. Relatively, it reduces the number of branch looking up operations and maintains the worst case linear time complexity

95-99

Authors: - IJCT FU Danlong

As a rising number of information online, we can easily obtain a large quantity of information, but to process them with manpower will be divorced from reality. Targeted the accounting reports and the contracts which are clientele oriented and scientific, this study tried to discuss a solution based on Information Extraction(IE) to obtain such kind of information from Internet by cyber retrieval, and then format these information by Natural Language Processing(NLP), the essence of this work is to process Internet text into structured data. This study obtained more than 20000 pieces of PCT information from the WIPO website server by using web crawler, and took the valuable information at particular locations. This study also tried to process quoted company announcements into valuable structured data by NLP, this study proposed the solution to build a system that to process professional text, which is written by natural language (Chinese) and from the CNINF website server, into structured data, on the base of the Domain Ontology Knowledge Lib. This study also did a simulation experiment, to prove the feasibility of the system.

105-111

Authors: - IJCT XiaoHua. Meng, YanFei. Lin, DaSheng Qin

In order to address the weakness of particle swarm optimization’s tendency to easily fall into local optimum in solving large scale combinational optimization problem, considering the balance that inertia can control between local search ability and global search ability, the paper proposed an improved hybrid particle swarm optimization algorithm (PSO) by adopting the self-adaptive inertia weight model and local search strategy of simulated annealing algorithm. Not only increases the variety of particles according to their distance to global optimum, but also enhances the local search ability of the algorithm. The Traveling Salesman Problem (TSP) is adopted to validate the efficiency of the proposed algorithm. By comparing with inertia weight linear decreasing particle swarm optimization, adaptive inertia weight particle swarm optimization and simulated annealing (SA) algorithm, experiments demonstrate that our method has a more promising results, proves it a more efficient modified algorithm

114-117

Authors: - IJCT Shaik Riyazuddin , K.Johnblessing , K.Nikhil Kumar , R.Bhakkiyalakshmi

This work proposes the design of Circularly polarized antenna for wireless system communication such as Mobile Communication and more. The Circular patch has radius of 12.5mm placed on the FR4 substrate. To increase the performance, the slots are introduced in this work. In order to get the Lossless communication and Low interference we are using Low VSWR Value. The proposed antenna resonates at 2.4 GHz, 3.4 GHz, 3.8 GHz, 5.6 GHz and 6 GHz. Hence its applications fall on ISM (2.4 - 2.483 GHz) band, fixed mobile Wi-MAX (2 - 6 GHz) applications. Since the antenna is designed with miniaturized size it can also be preferred for Bio-Telemetry applications. To design and simulate the antenna HFSS software tool has been used.

124-129

Authors: - IJCT Supreet Johar , Prof.A.S.Narote

Images sometime contain highly sensitive and personal information. If not protected, sensitive information in the images (e.g., MRI scan of a patient or G.I.S. maps) might be subject to unauthorized accesses by cloud providers. A naive approach to protect confidentiality of outsourced images is to encrypt the images before they are stored in the cloud. However, once this is done, it may not be possible to perform basic image processing operations, such as scaling and cropping. For instance, a remote pathologist, accessing a large histopathology image, would require first to access a scaled-down version, and then perform scaling and cropping operations to get a proper resolution for the Region of Interest (ROI). With images that are encrypted using standard encryption techniques, such operations would require the client machine to download the full encrypted images, decrypt them on the local machine, and then perform the operations. This makes the workflow slow and inefficient because a huge amount of data is pre-fetched and processed. 2DCrypto, a cloud-based multi-user encrypted domain image scaling and cropping framework based on the modified Paillier cryptosystem. For Practical deployment, a novel spaceefficient tiling scheme for tile-level encrypted domain scaling and cropping operations is implemented. In 2DCrypto, a number of pixels in a tile are put together and the tile is encrypted instead of encrypting each pixel independently and also optimizes the modified Paillier scheme to limit its storage requirement. Thus a space efficient and secured framework for image scaling and cropping using encryption is implemented.