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Discrete cosine transform technique

Digital Image Watermarking Technique Using Discrete Wavelet Transform and Discrete Cosine Transform

Digital Image Watermarking Technique Using Discrete Wavelet Transform and Discrete Cosine Transform

... a technique which allows an individual to add hidden copyright information or other verification message to digital ...watermarking technique has grown significantly to protect the copyright ownership of ...

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Reversible Data Hiding Technique using Novel Interpolation Technique and Discrete Cosine Transform

Reversible Data Hiding Technique using Novel Interpolation Technique and Discrete Cosine Transform

... One drawback of the DFT for a few applications is that the change is not simple esteemed, notwithstanding for genuine information. On the other hand, we do not have such issues with the discrete cosine ...

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Digital Image Compression using Block Truncation Coding and Discrete cosine Transform, Hybrid Technique

Digital Image Compression using Block Truncation Coding and Discrete cosine Transform, Hybrid Technique

... Block truncation coding (BTC) is a simple, fast, lossy and fixed length compression technique for gray scale images. BTC is a block-adaptive binary encoding method based on moment preserving quantization. The ...

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A Review on Transform Domain Adaptive Filters

A Review on Transform Domain Adaptive Filters

... of transform domain normalized LMS (TDNLMS) ...orthogonal transform for converting its input samples in to partially uncorrelated ...Self-orthogonalizing transform domain least mean square (SO-TRLMS) ...

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A Generalized Approach to Linear Transform Approximations with Applications to the Discrete Cosine Transform

A Generalized Approach to Linear Transform Approximations with Applications to the Discrete Cosine Transform

... approximation technique and combined it with pruning approximation techniques, (b) we proposed an algorithm to estimate the complexity distortion function and search for optimal transform approximation ...

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Comparative Analysis of Hybrid DKT DCT with DKT and DCT in Image Compression

Comparative Analysis of Hybrid DKT DCT with DKT and DCT in Image Compression

... Watermarking Technique Using Hybrid Wavelet Transform Generated from Kekre Transform and Discrete Cosine Transform” by ...watermarking technique using Kekre’s algorithm to ...

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A Digital Image Watermarking Algorithm Based on DWT DCT and SVD

A Digital Image Watermarking Algorithm Based on DWT DCT and SVD

... on discrete wavelet transform (DWT), 2 dimensions discrete cosine transform (DCT) and singular value decomposition (SVD) for robust watermarking of digital images in order to protect ...

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Contrast and Luminance Enhancement Using Discrete Shearlet Transform, Discrete Cosine Transform And Filtering Technique

Contrast and Luminance Enhancement Using Discrete Shearlet Transform, Discrete Cosine Transform And Filtering Technique

... Image enhancement is a key processing on an image for wide range of applications. Contrast enhancement improves the perceptibility of an image by changing the pixels intensity of the input image. In this project, a novel ...

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An Evaluation of Palm Print Recognition Techniques using DCT, Haar Transform and DCT Wavelets and their Performance with Fractional Coefficients

An Evaluation of Palm Print Recognition Techniques using DCT, Haar Transform and DCT Wavelets and their Performance with Fractional Coefficients

... proliferating technique in the ever increasing use of Biometrics for security and ...a technique for palm print recognition using the Discrete Cosine Transform, Haar Transform ...

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

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 ...Zadoff-chu ...

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Implementation of Image Fusion Techniques for Remote Sensing Application

Implementation of Image Fusion Techniques for Remote Sensing Application

... Discrete cosine transform is extensively used in digital image ...fusion technique can be used for application which does not require high quality and precision ...

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Complexity Analysis and Accuracy of Image Recovery Based on Signal Transformation Algorithms

Complexity Analysis and Accuracy of Image Recovery Based on Signal Transformation Algorithms

... Fourier Transform (FFT), Discrete Cosine Transform (DCT), Discrete Wavelet Transform (DWT) and Gabor Filter has been implemented for feature extraction of ...

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Comparative Analysis of Image Compression Using DCT and DWT Transforms

Comparative Analysis of Image Compression Using DCT and DWT Transforms

... Discrete Cosine Transform (DCT) exploits cosine functions, it transform a signal from spatial representation into frequency ...compression technique, during a step called ...

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SIMULINK BASED PROPOSED MODEL FOR IMAGE COMPRESSION AND COMPARISION WITH OTHER IMAGE COMPRESSION TECHNIQUE

SIMULINK BASED PROPOSED MODEL FOR IMAGE COMPRESSION AND COMPARISION WITH OTHER IMAGE COMPRESSION TECHNIQUE

... through discrete cosine transform, discrete wavelet transform and compare this technique with our proposed ...same discrete cosine transform in our proposed ...

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A Survey on Digital Image Watermarking Based on DCT and NPA
                 

A Survey on Digital Image Watermarking Based on DCT and NPA  

... victimization Discrete Cosine Transformation technique were developed in recent ...replacement technique in watermarking rule supported bit replacement ...the transform domain. Benefits ...

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GRAM-SCHMIDT ORTHOGONALIZATION BASED FACE RECOGNITION USING DWT

GRAM-SCHMIDT ORTHOGONALIZATION BASED FACE RECOGNITION USING DWT

... Yuehui Chen et al., [14] proposed a face recognition approach by using DCT and hybrid Flexible Neural Tree (FNT) classification model. The DCT is used to extract the input features to build a face recognition system and ...

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Replay attack detection with auditory filter-based relative phase features

Replay attack detection with auditory filter-based relative phase features

... the cosine phase feature is computed using only phase ...the cosine phase does not normalize the phase variation by cutting positions and the sine function is not applied to the unwrapped phase spectrum; ...

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Performance Study of Several Methods and Selected Wavelets for Image Compression

Performance Study of Several Methods and Selected Wavelets for Image Compression

... Fourier transform in addition to the wavelet transform is to take a observe the root function veil of the time-frequency ...Fourier transform, where the slit is plainly a square ...or cosine ...

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Performance evaluation of Improvement in BER Performance  using DWT Based OFDM AND DFT Based OFDM for Different Modulation Approaches

Performance evaluation of Improvement in BER Performance using DWT Based OFDM AND DFT Based OFDM for Different Modulation Approaches

... QAM (quadrature amplitude modulation) is a method of combining two amplitude-modulated (AM) signals into a single channel, thereby doubling the effective bandwidth. QAM is used with pulse amplitude modulation (PAM) in ...

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Telugu Speech Enhancement In Terms Of Objective Quality Measures Using Discrete Wavelet Transform With Hybrid Thresholding

Telugu Speech Enhancement In Terms Of Objective Quality Measures Using Discrete Wavelet Transform With Hybrid Thresholding

... Discrete Wavelet Transform has become a powerful tool in a wide range of ...wavelet transform produces non- redundant information due to orthonormal ...signal, discrete Wavelet ...

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