even discrete cosine transform
A comparison of discrete cosine transform and discrete wavelet transform algorithm in watermarking against common attacks
... (Nivedita et al., 2012), (Fung et al., 2011). Watermarking based on DCT has two facts. The first fact is that much of the signal energy lies at low-frequencies sub-band which contains the most important visual parts of ...
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Computation of Hilbert Transform via Discrete Cosine Transform
... Hilbert transform (HT) is an important tool in constructing analytic signals for various purposes, such as envelope and instantaneous frequency analysis, amplitude modulation, shift invariant wavelet analysis and ...
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Review Paper on 8-bit Discrete Cosine Transform using Common Boolean Logic Adder
... operation. Discrete Cosine Transform (DCT) is widely used in image and video compression ...(Discrete Cosine Transform) architecture using various techniques. Discrete ...
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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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Image Compression Using Discrete Cosine Transform (DCT) & Discrete Wavelet Transform (DWT) Techniques
... i.e. Discrete Cosine Transform (DCT) and Discrete Wavelets Transform (DWT) that are widely ...orthogonal transform and attempts to decorate the image ...
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A Generalized Approach to Linear Transform Approximations with Applications to the Discrete Cosine Transform
... linear transform and we use the DCT as a specific ...joint transform pruning and Haar basis projection-based approximation ...DCT transform into signal-independent and signal-dependent ...optimal ...
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Performance Study of Several Methods and Selected Wavelets for Image Compression
... The discrete cosine transform (DCT) is using only real numbers and DCT is a Fourier-correlated transform equivalent to the discrete Fourier transform ...with even ...
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Integrated Approach for Speech Compression Using DWT & DCT
... Discrete Cosine Transform (DCT) is very common when encoding video and audio tracks on computers. The DCT can also be used to analysis the spectral components of images as well. To DCT is very ...
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The Application of Selective Image Compression Techniques
... of discrete cosine transform (DCT) and discrete wavelet transform (DWT) methods to arrive at a better compression ratio mostly used to compress medical images is one of the techniques ...
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Blind Modulation Recognition in Wireless MC CDMA Systems Using a Support Vector Machine Classifier
... using Discrete Transforms (DTs) and Mel-Frequency Cepstral Coefficients (MFCCs) is ...the Discrete Wavelet Transform (DWT), Discrete Cosine Transform (DCT) and Discrete ...
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SIMULINK BASED PROPOSED MODEL FOR IMAGE COMPRESSION AND COMPARISION WITH OTHER IMAGE COMPRESSION TECHNIQUE
... Image compression is much necessary to improve storage capacity of images and also for utilizing transmission bandwidth. There are two types of image compression techniques lossless and lossy image compression technique. ...
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A Digital Image Watermarking Algorithm Based on DWT DCT and SVD
... The Discrete Cosine Transform is a very popular transform function that transforms a signal from spatial domain to frequency domain and it has been used in JPEG standard for image compression ...
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Telugu Speech Enhancement In Terms Of Objective Quality Measures Using Discrete Wavelet Transform With Hybrid Thresholding
... is transform domain ...the transform domain techniques, signals are first transformed into a new domain and then noise attenuation is performed on the transformed ...Fourier Transform (FT), ...
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VLSI Architecture for 2-D Sub-band Wavelet Transform using 9/7 Wavelet Coefficient
... of discrete wavelet transform (DWT) over the unitary transforms like discrete wavelet transform (DWT), discrete cosine transform (DCT), discrete sine ...
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Hybrid Optical Cryptography and Compressive Sensing Based on Orthogonal Matching Pursuit
... fast transform such as discrete Fourier transform (DFT), discrete cosine transform (DCT), real sinusoidal transform (RST), Haar wavelet transform, Hadamard ...
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A Survey of Digital Video Watermarking Techniques for Copyright Protection and Authentication
... Discrete Cosine Transform (DCT) based watermarking: A digital signal can be converted into different frequency components using discrete cosine ...DCT Transform includes only the ...
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PAPR Reduction in UF OFDM and F OFDM 5G Systems using ZCT Precoding Technique
... In this system, first the input data sequence is generated randomly and then the generated data symbols are subjected to the modulation process. For that in our proposed system, we use the QAM modulation. After the ...
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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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A Review on Transform Domain Adaptive Filters
... Fourier transform based block normalized LMS (FBNLMS) was introduced to reduce the computational complexity by using discrete fourier transform ...Hartley transform based normalized LMS ...
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A Survey on Digital Image Watermarking Based on DCT and NPA
... Discrete wavelet transform (DWT) of the image produces multi resolution representation of an image. DWT divides the image into high frequency quadrants and low frequency quadrants. The low frequency ...
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