discrete cosine
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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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 domains. The focus of DCT is preserving Euclidian distances as well as ...
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Computation of Hilbert Transform via Discrete Cosine Transform
... In this work we introduce a new method for computa- tion of HT, which is based on the discrete cosine trans- form (DCT) [17-21]. The DCT has become the industry standard in signal processing society ...
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Grayscale Image Compression using Discrete Cosine Transform
... Abstract - Image compression is the reduction or elimination of redundancy in data representation in order to achieve reduction in storage and communication cost. [1] Discrete cosine transform (DCT) is ...
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Efficient Sentence Embedding using Discrete Cosine Transform
... Vector averaging remains one of the most pop- ular sentence embedding methods in spite of its obvious disregard for syntactic structure. While more complex sequential or convolu- tional networks potentially yield ...
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Invisible Watermarking Audio Digital with Discrete Cosine Transform
... The concept used in the DCT method is to replace the DCT coefficients in the image into a new coefficient using discrete cosine wave function [5]. Selection of the replaced coefficients may vary depending ...
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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 technique in hiding text ...
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Performance Evaluation of Image Fusion Based on Discrete Cosine Transform
... Abstract – Discrete cosine transform (DCT) is used for fusion of two different images and for image compression. Image fusion deals with creating an image by combining portions from other images to obtain ...
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Evolution of the discrete cosine transform using genetic programming
... the Discrete Cosine Transform (DCT). The cosine transform has been heavily researched and many efficient methods have been determined and successfully applied in practice; this paper presents a novel ...
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FPGA Implementation of Approximate 2D Discrete Cosine Transforms
... Discrete cosine transform (DCT) is frequently used in image and video signal processing due to its high energy compaction property. Humans are able to perceive and identify the information from slightly ...
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Dual watermarking for video using discrete cosine transform
... Different algorithms are available in the spatial and transform domains for digital watermarking. The techniques in the spatial domain still have relatively low-bit capacity and are not resistant enough to compression ...
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Digital Image Watermarking Technique Using Discrete Wavelet Transform and Discrete Cosine Transform
... on discrete wavelet transform and discrete cosine transform has been presented, where the method operates in the frequency domain embedding a pseudo- random sequence of real numbers in a selected set ...
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A Digital Image Watermarking Method in the Discrete Cosine Transformation Domain
... Abstract— In this paper, a watermarking method has been proposed based on Discrete Cosine Transform(DCT) which can be used in order to protect copyrighting and to provide right of image ownership. In this ...
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Biometrics Fingerprint Recognition using Discrete Cosine Transform (DCT)
... DCT convert images from time (spatial) domain to (frequency) domain to decor relate pixels [19]. (dct) helps separate the image into parts. The proposed scheme uses Discrete Cosine Transform (dct) to create ...
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Title: Image Compression Using Discrete Cosine Transform Method
... Baseline JPEG Standard technique is used in compression of images with 8-bit color depth. Basically, this scheme consists of seven operations which are the sampling, the partitioning, the transform, the quantization, the ...
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A Novel Discrete cosine transforms & Distributed arithmetic
... In this paper, first a comparative simulation study of PSNR is done for two quantization tables, one recommended byJPEG committee and another suitable for hardware Simplification. Simulation results indicate that ...
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Review Paper on 8-bit Discrete Cosine Transform using Common Boolean Logic Adder
... A discrete cosine transform (DCT) expresses a finite sequence of data points in terms of a sum of cosine functions oscillating at different ...of cosine rather than sine function is critical ...
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A low-power and high-quality implementation of the discrete cosine transformation
... In short, we try to ignore some un- noticeable iterations and shift the compensation steps of each angle to the quantizer to derive the optimized Cordic based Loeffler DCT.. Moreover, th[r] ...
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An efficient algorithm for computing two-dimensional discrete cosine transforms
... A brief description of the Gertner method [5] for computing the 2-D FFT is presented in section 2, together with the radix- 2 fast discrete Radon transfrom (FDRT).. discussion[r] ...
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A Survey on Different Watermarking Approaches
... Discrete Cosine Transformation is defined as the sequence of data points in terms of cosine functions. These functions are defined as the oscillating information defined at different frequencies. DCT ...
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