fast discrete cosine transform
Performance Study of Several Methods and Selected Wavelets for Image Compression
... work, Fast Fourier Transform (FFT), Discrete Cosine Transform (DCT), Discrete Wavelet Transform (DWT) methods are used to process a test image is measured and compared in ...
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Complexity Analysis and Accuracy of Image Recovery Based on Signal Transformation Algorithms
... functions: Fast Fourier transform (FFT), Discrete Cosine Transform (DCT) and Discrete Wavelet Transform (DWT), used in image ...
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A Review on Transform Domain Adaptive Filters
... of transform domain normalized LMS (TDNLMS) ...orthogonal transform for converting its input samples in to partially uncorrelated ...The fast RLS algorithm is free from square ...Self-orthogonalizing ...
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A Generalized Approach to Linear Transform Approximations with Applications to the Discrete Cosine Transform
... linear transform approxima- tion for input set for different overall compu- tational resources with minimum ...a fast algorithm to transform each input element with an approximation operator, such ...
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DESIGN OF DISINFECTANT MANUFACTURING SYSTEM WITH AUTOMATIC CONCENTRATION CONTROL
... the Fast approaches of hardware implementation for Forward Discrete Cosine Transform (FDCT) and the Inverse Discrete Cosine Transform ...dimensional Discrete ...
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Comparative Analysis of Image Compression Using DCT and DWT Transforms
... [3]. O. Rioul and P.Duhamel, “Fast algorithms for discrete and continuous wavelet transforms” [4]. Makhoul, J. (February 1980). "A fast cosine transform in one and two ...
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Image Compression Using Discrete Cosine Transform (DCT) & Discrete Wavelet Transform (DWT) Techniques
... Kaur and Kaur [10]are of the view that the Image compression is the application of Data compression on digital images. There work entails the study of various image compression techniques and algorithms. Different ...
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Computation of Hilbert Transform via Discrete Cosine Transform
... Hilbert transform (HT) plays an essential role in con- structing analytic signals for a variety of signal and im- age processing ...the fast Fourier transform (FFT) [12], but many other meth- ods ...
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Frequency Domain Approaches for Fingerprint Based Gender Classification
... like Discrete Wavelet Transform, Discrete Cosine Transform, Block-based discrete cosine transform, Fast Fourier Transform and Region Properties ...
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Performance Analysis of OFDM System under FFT, DWT and DCT Based Transform Techniques
... conventional Fast Fourier Transform (FFT)-OFDM system and discrete cosine transform (DCT)-OFDM system is compared with discrete wavelet transform (DWT)-OFDM system in a ...
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Image steganography using least significant bit and secret map techniques
... Steganography is classified into linguistic steganography and technical steganography. Linguistic steganography involves the use of natural language as a carrier for hiding secret data. Technical steganography employs a ...
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Hybrid Optical Cryptography and Compressive Sensing Based on Orthogonal Matching Pursuit
... Fourier-related fast transforms such as discrete Fourier transform (DFT), discrete cosine transform (DCT), real sinusoidal Transform (RST), Haar wavelet transform, ...
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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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The Application of Selective Image Compression Techniques
... the derived image that is decoded tends to lose information after compression. It is irreversible, results in loss of data and image quality. In lossless compression, information is not lost after compression. Various ...
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Integrated Approach for Speech Compression Using DWT & DCT
... In the above figure the signal which is used to compress using DWT then by DCT with different compression ratio generating the compressed signal. After the compression by removing the distortion or unnecessary ...
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A Survey on Digital Image Watermarking Based on DCT and NPA
... Meenu Singh et al. [10] “Digital Image Watermarking Techniques: A Survey.’’ This paper then categorizes the various watermarking techniques into numerous categories dependent upon the domain in which the concealed data ...
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Implementation and Contrasting Comparision of Transform Techniques of OFDM
... The fast Fourier transform (FFT) is merely a rapid mathematical method for computer applications of ...the discrete Fourier spectrum exists only at discrete ...this discrete Fourier ...
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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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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 model ...
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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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