even discrete cosine transform-2
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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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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Computation of Hilbert Transform via Discrete Cosine Transform
... The usefulness of the DCT-based algorithm was tested in envelope analysis of different experimental signals. Figure 2 shows the vibration measurement of the running AC motor using an acceleration sensor. The ...
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Implementation of Image Fusion Techniques for Remote Sensing Application
... Discrete cosine transform is extensively used in digital image processing. Large DCT coefficients are concentrated in the low frequency region. DCT based image fusion technique can be used for ...
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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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Review Paper on 8-bit Discrete Cosine Transform using Common Boolean Logic Adder
... figure Discrete Cosine Transform for picture ...Dimensional Discrete Cosine Transform is executed by utilizing just 6 CORDIC squares which needs just 6 ...
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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 ...
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Image Compression Using Discrete Cosine Transform (DCT) & Discrete Wavelet Transform (DWT) Techniques
... A 2-D DWT is used to segment a cover image of mainly four sub components: one approximate component (LL) and the other three include detailed components represented as (LH, HL, HH) which is shown in figure ...
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A Review on Transform Domain Adaptive Filters
... problems transform domain adaptive filter (TDAF) was ...of discrete cosine transform (DCT), discrete sine transform (DST), wavelet transform (WT) and discrete ...
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Review on Different Video Watermarking Techniques
... the transform domain method for the digital watermarking of video for embedding invisible watermarks behind the ...of 2-D Discrete wavelet Transform and discrete cosine ...
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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 ...
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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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PAPR Reduction in UF OFDM and F OFDM 5G Systems using ZCT Precoding Technique
... ZCT precoding is applied to this complex vector, which transforms this complex vector into new vector of same length. After that the precoded data can be represented as time domain signal with the help of an Inverse Fast ...
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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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Replay attack detection with auditory filter-based relative phase features
... Phase-based features have also been successfully used for synthesized and converted speech detection [23, 24]. One of the most commonly used phase feature is the modified group delay (MGD)-based feature [11]. Typi- ...
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Chaos Based Video Security using Multicore Framework
... To unscramble the video, the scrambled RBG frames are retrieved and each frame is split into the constituent three channels i.e into R, B, G channels. DFT is applied to each individual channel. The phase of the image ...
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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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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 ...to transform each input element with an approximation operator, such that we satisfy the ...
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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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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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