block discrete cosine transform
A Novel Approach for Blocking Artifact Reduction in JPEG Compressed Images
... The block discrete cosine transform (BDCT) is most popular transform technique for image compression such as JPEG [1] for still images, MPEG [2] for moving pictures, and ...the ...
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Chaos Based Video Security using Multicore Framework
... in discrete cosine transform domain, discrete Fourier transform domain, and spatial ...cipher block chaining encryption is done to encrypt the video ...
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Digital Image Compression using Block Truncation Coding and Discrete cosine Transform, Hybrid Technique
... each block is coded separately. Gray levels of each image block is quantized by Q level quantizer and these quantizer levels are chosen such that a few low order moments are preserved in the quantized ...
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Review Paper on 8-bit Discrete Cosine Transform using Common Boolean Logic Adder
... With the advent of high resolution images and high definition videos, they are very popular and can be easily found in daily use by several people. Relying on quality data for processing led to the development of the ...
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Using Discrete Cosine Transform 2 to achieve High Peak Signal to Noise Ratio in Image Processing
... [5]. Dinesh Gupta, Pardeep Singh, Nivedita, Sugandha Sharma, Vol.12 No.2, “A Comparative study of Image Compression between Singular value decomposition, Block truncating coding, Discrete cosine ...
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A Novel Approach Based on DCT for Electrocardiograph Signal Compression
... modified discrete cosine transform (MDCT) is a lapped transform based on the type-IV discrete cosine transform (DCT-IV), with the additional property of being lapped: it ...
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Blocking Artifacts Reduction in Block based Discrete Cosine Transform Compressed Images
... Fourier-related transform similar to the discrete Fourier transform (DFT), but using only real ...the block. The result is an [8 × 8] transform coefficient ...
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Block wise image compression & Reduced Blocks Artifacts Using Discrete Cosine Transform
... ata compression is defined as the process of encoding the data using a representation that reduce the overall size of the data. This reduction is possible when the original dataset contains some type of redundancy. ...
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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 two-stage algorithm for the early detection of zero-quantized discrete cosine transform coefficients in High Efficiency Video Coding
... where α is determined by a theoretical analysis of the properties of the DCT. Among these methods, Zhou et al. [7] provided a larger value α (i.e., 1 4 for an 8 × 8 DCT), which provided a more stringent condition for ...
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(RTCS) equalizer for standard
... a discrete cosine transform (DCT) block is embedded within the framework of a conventional RNN ...Recurrent Transform Cascaded (RTCS) equalizer for standard communication channel models ...
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SIMULINK BASED PROPOSED MODEL FOR IMAGE COMPRESSION AND COMPARISION WITH OTHER IMAGE COMPRESSION TECHNIQUE
... (discrete cosine transform) which is very much similar with the ...is discrete wavelet transform (DWT) used for image ...model block processing. Each block in this model ...
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Implementation of Image Fusion Techniques for Remote Sensing Application
... and transform domain ...Wavelet Transform (SWT) is similar to Discrete Wavelet Transform (DWT) but the only process of down-sampling is suppressed that means the SWT is translation-invariant ...
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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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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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Digital Image Watermarking Technique Using Discrete Wavelet Transform and Discrete Cosine Transform
... the transform domain in order to ensure non- erasability of the ...wavelet transform and a robust definition for the threshold which validates the ...
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Effect of Secret Image Transformation on the Steganography Process by using LSB & DCT Techniques
... algorithms transform the original message into a cipher text before transmission, whereas the basic idea used in Steganography is to hide the existence of the message in a ...
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Comparative Analysis of Image Compression Using DCT and DWT Transforms
... Discrete Cosine Transform (DCT) exploits cosine functions, it transform a signal from spatial representation into frequency domain. The DCT represents an image as a sum of sinusoids of ...
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Complexity Analysis and Accuracy of Image Recovery Based on Signal Transformation Algorithms
... The Fast Fourier Transform is at every turn used in digital signal processing algorithms. FFT algorithms utilize many applications for example, OFDM, noise reduction, digital audio broadcasting, and digital video ...
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Implementation Of Hexagon Based Search (HEXBS) Algorithm For Motion Estimation Using MATLAB
... sebagai Block Matching Motion Estimation sering digunakan dalam pelbagai piawai pengekodan bagi mendapatkan nibah pemampatan yang tinggi dalam pengekodan ...
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