Result Oriented Approach: Reserving Room Before Encryption In Reversible Data Hiding In Encrypted Images
Abstract— Recently, reversible data hiding (RDH) in encrypted images is the most important property that the original cover can be lossless recovered after embedded data is extracted while protecting the image content’s conﬁdentiality. Due to use of embedding data by reversibly vacating room from the encrypted images, this method may be subject to some errors on data extraction and image restoration. In this paper, we propose method by reserving room before encryption with a traditional reversible data hiding algorithm, and thus it is easy for the data hider to reversibly embed data in the encrypted image. This method can achieve real reversibility,data extraction and image recovery are free of any error. according to this method, it can embed more times as large payloads for the same image quality as the previous methods, such as for PSNR dB.
Keywords— Reversible data hiding (RDH), Histogram shift (HS), Difference expansion (DE).
Abstract— — In this paper biometrics is used for the authentication purpose. In biometrics specially, Face recognition is used for this paper. We are collecting some faces stored in the databases used for authentication purpose. Suppose one human got mark in faces it will not allow for authentication for that reason .thermal infrared template algorithm is used to handle the critical situation. Collect the faces by using MWIR Camera after stored in the databases and register the faces using linear image registration tool .using image morphology it generate superficial blood vessels. The extracted vascular network wills procedure contour shape which is characteristic to each individual’s .finally it matches original image. Gabor filter is used for future extraction.
Keywords— biometrics, face recognition, biometrics authentication, facial signature, MWIR image.
Abstract— Steganography is the hiding of a secret message within an ordinary message and the extraction of it at its destination. Steganography takes cryptography a step farther by hiding an encrypted message so that no one suspects it exists. Ideally, anyone scanning your data will fail to know it contains encrypted data. Additionally secret data embedding is performed using frequency domain approach – DWT (Discrete Wavelet Transform), DWT outperforms than DCT (Discrete Cosine Transform). Secret data is hidden in one of the high frequency sub-band of DWT by tracing skin pixels in that sub-band. Different steps of data hiding are applied by cropping an image interactively. Cropping results into an enhanced security than hiding data without cropping i.e. in whole image, so cropped region works as a key at decoding side. This study shows that by adopting an object oriented Steganography mechanism, in the sense that, we track skin tone objects in image, we get a higher security. And also satisfactory PSNR (Peak- Signal-to-Noise Ratio) is obtained.
Abstract— This paper presents the seismic behavior of beam column joint using Glass Fiber Reinforced polymer (GFRP) wraps. The dimensions of the specimens were fixed to be 0.2 m x 0.15 m cross section and the height of column was fixed as 1m and the cantilever length of the beam was fixed as 0.8m to carry out the experimental work. The column portion was reinforced with 4 No’s of 8mm diameter in tension side and 4 No’s of 8 mm diameter in compression side. The beam portion was reinforced with 2 No’s of 8 mm diameter in tension side and 2No’s of 8 mm diameter in compression side. The performances of the specimens are compared in terms of lateral load versus displacement curves. The grade of concrete proposed was M20 and the grade of steel was Fe 415. Four numbers of exterior beam column joint were cast and tested under lateral loading. The specimens was designed as per IS 13920:1993. Out of four specimens one was control specimen and the remaining three specimens were wrapped with 1 layer, 2 layers, and 3 layers of GFRP. Results by experimental work shows that GFRP specimens carries more load carrying capacity than the control specimen.
Keywords— column joint, GFRP sheet, Number of wrap, Number of GFRP layers, Reinforcement
Abstract— The present study deals about the short circular column of slenderness ratio 3,6,9 and C/S as 150 mm diameter and 450 mm,900 mm,1350mm height. Totally 21 Number of columns are casted. The columns are wrapped using Basalt fiber reinforced polymer, Glass fiber reinforced polymer and jute fiber composites of three layers, four layers and five layers in combination for these specimens the following data are to be obtained, Load vs Deflection, ultimate compressive strength.
Keywords— Confinement, FRP, Compressive strength
Abstract— The development of new binders, as an alternative to Portland cement (PC), by alkaline activation, is a current researcher’s interest. Geopolymer binder is obtained by a manufacturing process less energy-intensive than Portland cement and involves less greenhouse gases emission and also reducing initial cost of the project. A supplementary material belongs to prospective materials in the field of civil engineering. Researchers have employed Various molecular ratio, temperature and duration, Fibers addition, Superplastizers, Setting time, alkaline activators and alternate binders to modify some properties of Geopolymer system. This paper presents a comprehensive overview of the previous works carried out on using different additives by varying various properties.
Keywords— Geopolymer, Alkaline activator, molecular ratio, temperature and duration, Fibers, Setting time, Superplastiziers
Compressive Strength and Split Tensile Styrength of Geopolymer Mortar with Binary and Quinary Blends
Abstract— Today, the world is on the verge of witnessing a sustained growth in infrastructure build up. The demand in the construction industry has increased the necessity of high strength concrete. In all construction work, concrete plays a vital part and it increases the total cost of the project. There is also concern on the production and usage of concrete due to its impact on environment. Concrete can be generally be produced of locally available constituents, However, environmental concerns, stemming from the high energy expenses and CO2 emission associated with cement manufacture have brought about pressures to reduce cement consumption through the use of supplementary materials. It reduces the cost, makes concrete more durable and it is eco-friendly. As part of the research efforts to develop cement less alkali-activated mortar using fly ash and other supplementary materials as a binder.
Keywords— Fly ash, volcanic ash, Metakaolin, Zeolite, Rice Husk ash, Nano silica, Alkaline Activator