[PDF] Top 20 Text hiding using Discrete Cosine Transformation (DCT)

Text hiding using Discrete Cosine Transformation (DCT)

... Lossless compression is usually achieved by using variable-length code words, where the shorter code words are assigned to the symbols that occur more frequently. This variable-length code words assignment is ... See full document

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Hiding Image in Audio Steganography Using Discrete Cosine Transform and Skin Detection

... 3) Embedded B-plane: After DCT step, the Embedding process is performed either G-plane (represent as green plane) or B-plane (represent as green plane) but strictly not in red-plane. The B-plane is more visible ... See full document

8

Integrated Approach for Speech Compression Using DWT & DCT

... of transformation for the compression of speech ...signal using discrete wavelet transform (DWT) and then again compressed by discrete cosine transform (DCT) then decompressed it ... See full document

5

A Comparative Study on ROI-Based Lossy Compression Techniques for Compressing Medical Images

... and Discrete Cosine Transformation (DCT) algorithms are used to code background region, while Embedded Zero-tree Wavelet (EZW) coding, Set Partition In Hierarchical Tree (SPIHT) Algorithm, ... See full document

6

An Enhanced Pixel Shuffling based Approach to Simultaneously Perform Double DCT Image Compression, Encryption and Secondary Steganography

... by Discrete Cosine Transform (DCT), Encryption and Decryption by Pixel Shuffling and Steganography by double image hiding to affirm the increased security of the previous ... See full document

9

A Review on Transform Domain Adaptive Filters

... B.Farhang-Boroujeny and S.Gazor [7] in January 1992, studied the quantization effects of transform domain normalized LMS (TDNLMS) algorithm. They have reviewed the fact that quantization has low sensitivity level in case ... See full document

5

Abstract— This paper describes the design of two-dimensional discrete cosine transform (DCT) architecture for

... two-dimensional discrete cosine transform (DCT) architecture for Multimedia communication ...basic transformation for coding method to transform the image formation from spatial domain to ... See full document

7

An Improved Technique for Hiding Secret Image on Colour Images using DWT, DCT, SVD

... a Discrete Wavelet Transform (DWT), Discrete Cosine Transformation and (DCT) Singular Value Decomposition ...and cosine transformed by one ...then cosine transformed and ... See full document

5

Image Compression Using Discrete Cosine Transform (DCT) & Discrete Wavelet Transform (DWT) Techniques

... by using the transform of wavelet accompanied by neural network as a ...bands using low level detail sub ...compression using, “Set Partitioning in Hierarchical Trees‟ (SPIHT) algorithm for ... See full document

10

1. Digital image watermarking techniques

... techniques. DCT is a fast transformation technique provides excellent energy compaction for highly correlated data and most of the information (DC coefficient) is in the first ...on Discrete ... See full document

6

Analysis of Integer Transformation and Quantization Blocks using H.264 Standard and the Conventional DCT Techniques

... The previous video coding standards relied on Discrete Cosine Transform (DCT) that provided the transformation but produced inverse transform mismatch problems.H.264/MPEG-4 part 10, uses an ... See full document

6

INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES MANAGEMENT DISCRETE COSINE TRANSFORMATION FOR ANALYSIS OF IMAGE

... Coding. DCT is a computation intensive operation. Since DCT approaches the statistically optimal Karhunen-Loeve Transform (KLT) for highly correlated signals ...[13]. DCT is used in most of the ... See full document

7

Effect of Secret Image Transformation on the Steganography Process by using LSB & DCT Techniques

... for hiding secret image into the cover ...as Discrete Fourier transformation (DFT), discrete cosine transformation (DCT), and Discrete Wavelet transformation ... See full document

7

Discrete Wavelet Transform with Adaptive Network Based Fuzzy Inference System for Compression of Images

... with Discrete Cosine Transform (DCT) and image compression is performed using Discrete Wavelet Transform (DWT) with Adaptive Network-Based Fuzzy Inference System ...encrypted ... See full document

9

GRAM-SCHMIDT ORTHOGONALIZATION BASED FACE RECOGNITION USING DWT

... by using WT and ...extracted using PCA and then classification is done by using ...images using PCA, the ICS derives three independent component images by means of blind source separation, ... See full document

10

Comparison of Frequency Domain Digital Watermarking Techniques on the Basis of PSNR

... The implementation of the digital watermarking techniques in frequency domain will be implemented in MATLAB Simulink. Simulation results of the proposed model is interactive and friendly to the end-user [14]. In MATLAB ... See full document

7

PAPR Reduction in UF OFDM and F OFDM 5G Systems using ZCT Precoding Technique

... as Discrete Fourier Transform (DFT), Discrete Cosine Transform DCT) and Zadoff-Chu Transform (ZCT) are implemented using MATLAB for F-OFDM and UF-OFDM ... See full document

7

Volume 3, Issue 4, April 2014 Page 105

... (b) Discrete Cosine Transform (DCT): In DCT method, the image is first transformed to frequency domain and then separated into spectral ...The discrete cosine coefficients of ... See full document

7

Simulation of DA DCT Using ECAT for Reducing the Truncation Errors

... The 2-D DCT architecture and the implementation were discussed in the previous chapters. Now this chapter deals with the simulation and synthesis results of the implemented 1-D 8-point DCT. Here ModelSim ... See full document

6

VLSI Architecture for 2-D Sub-band Wavelet Transform using 9/7 Wavelet Coefficient

... Where Y l j (n ) is the n-th low-pass sub band component of the j-th DWT level and Y h j (n ) is the n-th high-pass sub band component of the j-th DWT level. Two-dimensional signal, such as images, are analyzed ... See full document

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