Cryptography is one of widely used technique of secret writing which is the term used for data and information security and protects that information from various attacks. Cryptography is the process of converting a known text or plaintext into a human unreadable format called cipher text by encoding the original message using some encoding technique. Security is concerned with the protection of the network and data transmission over the network. Data Security is the most essential aspect of secure data transmission over the network. But to achieve complete data security is a challenging issue of data communication.
The concept of Hyperspectral imaging is designed to collect information as a set of images where each image represents a narrow wavelength range of the electromagnetic spectrum, this is known as the spectral band. The main idea is to combine these images in order to form a three dimensional (x, y, ʎ) Hyperspectral data cube which is processed and analyzed. X and Y represent spatial dimensions of the scene and the ʎ represents the spectral dimension made up of a range of wavelengths. This spectral dimension is a plot of wavelength and reflectance which is used to identify and understand a particular feature within the scene and hence the “fingerprints” of the materials are obtained and we are able to identify materials in the scene. Obtaining a Hyperspectral image can be tackled by any overhead method from airborne methods to space based techniques, the use of a particular grating will help in the dispersion of the spectrum.
In this case it can be differentiated into an independent file format (represented by raw data dd) and specific file format or vendor based format (represented by EO1 format from Encace). The second one is the digital evidence generated from the live acquisition process represented by the pcap extension as the output of live data capture process by wireshark application, and the third is digital evidence of multimedia file (Audio, Video, Image, Text). Meanwhile, according to  forensic analysis will involve an enormous amount of metadata generated from various types of user and system activities. However, this study is limited to metadata information directly related to the management of digital evidence for the chain of custody. A simple test was conducted to find out whether the proposed Pseudo Metadata concept has fulfilled the digital chain of custody solution.
The security of our data has always been a prominent issue. Our secret data needs to be so secure and safe so that it can only access by the authorized person. The amount of data sharing on the internet from one place to another is increasing day by day and that amount is beyond our imagination. So with rising of data sharing, the need for security of data is also increased. Steganography plays a major role in secret data communication.
The CWT can be interpreted as a linear filtering operation (convolution between the signal x(t) and a filter with impulse response ψ(-t/s)).The CWT can be viewed as a type of bandpass analysis which modifies the center frequency and bandwidth of a bandpass filter by varying the scaling parameter (s). The CWT can be expressed as Inverse Continuous Wavelet Transform: CWT is highly redundant since 1-dimensional function x(t) is transformed into 2-dimensional function. Therefore, it is discretize to some suitably chosen sample grid. The is called as dyadic sampling: s=2-j, τ = k2-j. By using the dyadic sampling we can reconstruct exactly the signal
larger field depth allows the screen to be located at any difference from the projector. COMBINER: A special mirror known as a combiner or beam splitter is required for both reflection and transmission .silvered half of mirror reflects the light while the other transparent half transmits light.the combiner must be properly positioned to view the image processed by the computer.the cloak and the background image must be fully integrated for realistic
Data is the raw form of information stored in our databases, network servers, and personal computers. This might be a wide range of information from personnel files and intellectual property to market analytics and details intended to top secret. However, some of this information not planned to leave the system. The unauthorized admission of the data will cause to several problems for
From there, on the top-right corner of the screen, “Configure Spectrophotometer” was chosen, and a wavelength of light at which the data was collected was set at 440.6 nm. The data was collected by measuring “Absorbance vs. Time.” Then “OK” was selected to secure all setting
How Does Cyber Security Staff Improves their Strategy Skill to Counter Threat Attacks through CyberCIEGE? I. Introduction I.I Background of study Cyber Security, is the body of technology that design to protect networks, programs, computers and data from damage or unauthorized access and attack. There are elements of cybersecurity, these include: Application Security, Information Security, Network Security, Business Continuity Planning, End-user Education and Operation Security. The most problem in cybersecurity is the quickly and constantly evolving nature of security risk, threat is advancing quickly but the problem is they can't keep up with it.
MDCT can now produce x, y and z resolutions of 0.6 mm. A high-resolution three-dimensional image of the thorax can be achieved when x, y two dimensional slices are piled together. And this 3D image has all of the thoracic structures, including the airways, mediastinal blood vessels and mediastinal lymph nodes. The three-dimensional image thus obtained is a digital image, with a defined spatial dimension and grey-scale characteristics. This 3D image of the thorax can be studied, stored, acquired and shown as an informational structure bases on imaging.