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Chincholkar, Y. D.
- Steganography for Two and Three Lsbs Using Extended Substitution Algorithm
Authors
1 Department of Electronics and Telecommunications Engineering, Dnyanganga College of Engineering and Research, IN
2 Department of Electronics and Telecommunications Engineering, Sinhgad College of Engineering, IN
3 Department of Electronics and Telecommunications Engineering, RMD Sinhgad School of Engineering, IN
Source
ICTACT Journal on Communication Technology, Vol 4, No 1 (2013), Pagination: 685-690Abstract
The Security of data on internet has become a prior thing. Though any message is encrypted using a stronger cryptography algorithm, it cannot avoid the suspicion of intruder. This paper proposes an approach in such way that, data is encrypted using Extended Substitution Algorithm and then this cipher text is concealed at two or three LSB positions of the carrier image. This algorithm covers almost all type of symbols and alphabets. The encrypted text is concealed variably into the LSBs. Therefore, it is a stronger approach. The visible characteristics of the carrier image before and after concealment remained almost the same. The algorithm has been implemented using Matlab.Keywords
Steganography, Cryptography, Encryption, Decryption, Extended Square Substitution Algorithm.- Mutual Coupling Reduction between Microstrip Antennas Using Electromagnetic Bandgap Structure
Authors
1 Department of Electronics and Telecommunication Engineering, Sinhgad College of Engineering, Maharashtra, IN
2 Department of Electronics and Telecommunication Engineering, Sou. Venutai Chavan Polytechnic, Maharashtra, IN
3 Department of Aerospace Engineering, Defence Institute of Advanced Technology, Maharashtra, IN
Source
ICTACT Journal on Communication Technology, Vol 2, No 1 (2011), Pagination: 241-245Abstract
When the number of antenna elements is placed in forming the arrays, mutual coupling between the antenna elements is a critical issue. This is particularly concern in phase array antennas. Mutual coupling is a potential source of performance degradation in the form of deviation of the radiation pattern from the desired one, gain reduction due to excitation of surface wave, increased side lobe levels etc. EBG (Electromagnetic Band Gap) structure (also called as Photonic Bandgap Structure PBG) not only enhances the performance of the patch antennas but also provides greater amount of isolation when placed between the microstrip arrays. This greatly reduces the mutual coupling between the antenna elements. The radiation efficiency, gain, antenna efficiency, VSWR, frequency, directivity etc greatly improves over the conventional patch antennas using EBG. The EBG structure and normal patch antenna is simulated using IE3D antenna simulation software.Keywords
Antenna, Electromagnetic Band Gap (EBG), Mutual Coupling, Surface Waves, Antenna Efficiency.- Effective Robust Patchwork Method to the Vulnerable Attack for Digital Audio Watermarking
Authors
1 Department of Electronics and Telecommunications Engineering, Savitribai Phule Pune University, IN
Source
ICTACT Journal on Image and Video Processing, Vol 8, No 4 (2018), Pagination: 1753-1758Abstract
This paper presents patchwork based digital audio watermarking. The advanced growth in transmission of digital data has resulted in a corresponding elevation in the need for copyright protection of signal. Cryptography and steganography are used for the content protection but do not completely solve the copyright issue. Watermarking is a method to protect and identify the digital data while maintaining the quality of the host media, it permits various types of watermarks to be hidden in audio signal e.g. image, audio and video. This paper limits on image embedding technique using patchwork-based method. In patchwork based method average of all segments of approximate coefficients is calculated for embedding watermark into sound signal. The experimental results shows that proposed method achieves imperceptibility for audio signal as watermarked audio signal is inaudible after embedding watermark and robustness of watermark against different signal processing attacks with higher PSNR. The resulting audio is robust to attacks and exhibits good quality in term of peak signal to noise ratio. The simulation results show the effectiveness of the proposed system.Keywords
Audio Watermarking, Stationary Wavelet Transform, Patchwork.References
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- Traffic Sign Board Detection for Advanced Driver Assistance Systems and Autonomous Vehicles
Authors
Source
Automation and Autonomous Systems, Vol 10, No 6 (2018), Pagination: 119-122Abstract
The basic idea for the ADAS system to analyse live road situations with a camera which will be placed on the vehicle and a processing unit on board that will assist the driver while they are driving in different traffic conditions on the road to avoid accidents. As autonomous vehicles, such as Google’s ‘self-driving car has become more prominent recently because of the ability to detect and recognise informational road. A majority of existing approaches to traffic sign recognition separate the task into two phases designed to capitalize on these advantages The first phase, known as the “segmentation phase,” determines which regions of an image are likely to yield traffic signs, and the second phase is known as the “classification phase,” determines what kind of sign (if any) is contained in this region. Here, we describe a new approach to the “segmentation” phase. This paper shows a programmed street sign detection and acknowledgment framework that depends on a computational model of human visual acknowledgment handling. The tangible analyser removes the spatial and worldly data of enthusiasm from video arrangements. The removed limit data at that point fills in as the contribution to region Analyzer, which at that point looks for specific shapes in the picture. Later these recognized items are encouraged into a neural system. Potential highlights of street signs are then removed from the question regions comparing to the concentrations, and the neural system perceived activity signs and recognized sign board is shown to the driver.
Keywords
ADAS (Advanced Driver Assistance Systems), CNN (Convolutional Neural Network), Real-Time Image Processing, Autonomous Vehicle- Traffic Sign Board Detection and Recognition for Autonomous Vehicles and Driver Assistance Systems
Authors
1 Department of Electronics and Telecommunication Engineering, Sinhgad College of Engineering, IN
Source
ICTACT Journal on Image and Video Processing, Vol 9, No 3 (2019), Pagination: 1954-1959Abstract
In the recent year's many approaches have been made that uses image processing algorithms to detect traffic sign boards. Edge detection is used to avoid segmentation problems of the existing method. Color based segmentation faces the challenge of adaptive thresholding which fails in real time scenarios. This proposed algorithm is yet another approach to detect traffic sign boards from video sequences. The first step of this work is the pre-processing of the video frame which is achieved by the gray scale conversion and edge detection and the second step is the extraction of the objects. Hough Transform algorithm is then applied to measure properties of image regions for further analysis. The different feature points which include perimeter, area, filled area, solidity and centroid are extracted for the detection of the traffic sign board. Feature generation and classification are done on the recognition side to get the class of the detected object. The input for the project is video sequences taken from a camera placed on the vehicle.Keywords
Hough Transform, Machine Learning Algorithm, Traffic Detection, Feature Classification.References
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