Discrete Cosine Transformation
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INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES MANAGEMENT DISCRETE COSINE TRANSFORMATION FOR ANALYSIS OF IMAGE
... A discrete cosine transform (DCT) expresses a sequence of finitely many data points in terms of a sum of cosine functions oscillating at different ...perform discrete cosine ...
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Text hiding using Discrete Cosine Transformation (DCT)
... transformations, Discrete wavelet transformation, Discrete Cosine Transformation and many ...implement Discrete Cosine Transformation (DCT) as steganography ...
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Four dimensional matrix discrete cosine transformation based remote education video compression technical research
... matrix discrete cosine transformation-based video compression algorithm can do without adopting motion compensation techniques among intra-frame ...
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An Improved Discrete Cosine Transformation Block Based Scheme for Copy-move Image Forgery Detection
... The discrete cosine transformation (DCT) segments the image into spectral sub-bands of varying ...current discrete cosine transformation (DCT) was improved and the dimension of ...
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Image Fusion Based On Sparse Sampling Method And Hybrid Discrete Cosine Transformation
... Abstract— Image fusion is a mixture of several images to a merged image ensuing more informative than other input images which have been used in recent years. Image fusion based on Discrete Cosine ...
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Privacy Preserving Clustering Based on Discrete Cosine Transformation
... Discrete cosine transformation is a unitary transformation, which can preserve the Euclidian distances between original and transformed ...the transformation matrix with the original ...
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Image Compression Algorithms under JPEG with Lapped Orthogonal Transform and Discrete Cosine Transformation
... (discrete cosine transform). Now here Lapped Orthogonal Transform and Discrete Cosine Transformation are using with JPEG 2000 ...The discrete cosine transform is a fast ...
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A JPEG Discrete Cosine Transformation Based Coding Technique for Image Data
... David Salomon [8] provides necessary consideration for image compression. An image compression method is specified for a specific type of images. New data compression methods that are developed and implemented have to be ...
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Robust Digital Image Watermarking Technique using Image Normalization and Discrete Cosine Transformation
... the discrete Fourier transform (DFT) of an image is computed and then the Fourier-Mellin transform is performed on the magnitude, the watermark is embedded in the magnitude of the resulting ...
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Discrete cosine transformation, Elliptic curve digital signature algorithm, Image authentication, imperceptibility, JPEG, Public key cryptography.
... curve discrete logarithm problem (ECDLP) and ECDLP is significantly more difficult than IFP (Integer Factorization Problem) and DLP (Discrete Logarithm Problem) ...
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A Digital Image Watermarking Method in the Discrete Cosine Transformation Domain
... The most important point in distinction of DCT and DFT that is, after implementation DFT, the result will be a complex function with amplitude and phase but for DCT, just a function with real coefficients is observable ...
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A low-power and high-quality implementation of the discrete cosine transformation
... Abstract. In this paper a computationally efficient and high- quality preserving DCT architecture is presented. It is ob- tained by optimizing the Loeffler DCT based on the Cordic algorithm. The computational complexity ...
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Effect of Secret Image Transformation on the Steganography Process by using LSB & DCT Techniques
... as Discrete Fourier transformation (DFT), discrete cosine transformation (DCT), and Discrete Wavelet transformation (DWT) are used to embed the secret image data in the ...
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Face Recognition using Two Dimension Fractional Discrete Cosine Domain and BPNN
... present. Discrete Fourier Transformation representation allows manipulating the information content of the image globally by means of spatial manipulations of the transformed ...that Discrete ...
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A Comparative Study on ROI-Based Lossy Compression Techniques for Compressing Medical Images
... (BTC), Discrete Cosine Transformation (DCT), Embedded Zero-tree Wavelet (EZW) coding, Set Partition In Hierarchical Tree (SPIHT) Algorithm, Zero-Tree Entropy (ZTE) Coding Algorithm and Singular Value ...
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Analysing and evaluating a dual sensor autofocusing method for measuring the position of patterns of small holes on complex curved surfaces
... Major radius and minor radius, respectively mm Computer aided design Charge coupled device Horizontal distance between dual sensors mm Discrete cosine transformation Depth of field µm Op[r] ...
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AN APPROACH FOR COMPRESSING DIGITAL IMAGES BY USING RUN LENGTH ENCODING
... mathematical transformation which is related to the Fourier transformation which is similar to the discrete Fourier transformation but it uses only real ...sample. Discrete ...
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A Survey on Different Watermarking Approaches
... Watermarking methods are divided in two main categories called domain specific and the transformation specific. In case of spatial domain based approaches, the information message is directly embedded in the ...
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Image Compression – Decompression using Polynomial Based Wavelet Transformation in PDF Document
... double discrete wavelet transform (DDWT) is a generative method of image blur that determines wavelet analysis of a blurred ...Polynomial Discrete Cosine Transformation Lossless Image ...
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An Improved Technique for Hiding Secret Image on Colour Images using DWT, DCT, SVD
... For Discrete Cosine Transformation the functions of the oscillation coefficient in various frequencies reveal a limited sequence of data points in ...total. Discrete Cosine ...
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