low bit-rate transform compression
Very Low Bit Rate Video Coding by Combining H 264/AVC Standard and 2 D Discrete Wavelet Transform
... video sequence. After applying a two dimensional Haar wavelet transform on it, Figure 5(b) is obtained. Finally, Figure 5(c) indicates the corresponding LL, LH, HL, and HH bands according to Figure 5(b). ...
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Feature extraction for very low bit rate video coding
... block transform coding using temporal prediction and motion estimation ...The low-level processing used by these methods, such as transforms, ltering and correlations, is by now well understood and major ...
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Steganography integration into a low-bit rate speech codec
... significant bit (LSB) replacement / matching method towards the pulse code modulation (PCM) format voice data ...in transform domain, firstly transforming the cover’s data to the transform domain, ...
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AN ENHANCED LOSSLESS IMAGE COMPRESSION BASED ON HIERARCHICAL PREDICTION CONTEXT ADAPTIVE CODING
... high bit resolution images on low bit resolution displays, bit resolution needs to be ...reduced bit rates and high compression gain, an enhanced method for compression of ...
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Efficient bit rate control method for distributed video coding system
... wireless low-power video surveillance systems, visual sensor networks and mobile systems with ultra light encoders ...The transform domain DVC coding sys- tem named Power-efficient, Robust, hIgh ...
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Warped Discrete Cosine Transform-Based Low Bit-Rate Block Coding Using Image Downsampling
... be transform coded and therefore signif- icantly reduces the WDCT overhead per ...of transform coefficients to improve the compression perfor- ...
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Performance Analysis of Hybrid DWT and DCT based Compression Techniques for Low Bit Rate
... Lossy compression technique consists of basically three main steps: Transform quantization and ...Lossless Compression technique is that in lossy compression, a high compression can be ...
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Facial Image Compression Based on Structured Codebooks in Overcomplete Domain
... image compression technique in the scope of distributed source coding ...image compression is considered from the position of source coding with side information and, contrarily to the existing scenarios ...
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Satellite Image Compression using Discrete wavelet Transform
... image compression is most important task to be accomplished on order to save storage capacity, several image compression methods are explored in [13] mostly based on spatial ...Cosine Transform ...
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Listless Block Tree Coding with Discrete Wavelet Transform for Embedded Image Compression at Low Bit Rate
... The performance of LBTC-DWT is compared with other compression methods as LBTC, WBTC, NLS and SPIHT. The proposed algorithm is found to be better than other methods by a wide margin in terms of various parameters ...
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GiLBCSteg: VoIP Steganography Utilizing the Internet Low Bit Rate Codec
... In order to test the algorithm, 20 minute voice recordings have been created. As a first task, random samples are collected from the data sets. The length of these excerpts lasted ten seconds, sixty seconds, five ...
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Perceptual Evaluation of a New Subband Low Bit Rate Speech Compression System based on Waveform Vector Quantization and SVD Postfiltering
... new low rate speech coding algorithm, based on a subband ...a low pass filter, thus yielding the low frequency (LF) ...speech compression (variable degree of analysis/synthesis at ...
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Performance Analysis of Bit Error Rate (BER) in OFDM System by Integrating with the Discrete Fractional Fourier Transform (DFrFT)
... data rate, high speed and low complexity compared to conventional methods such as CDMA, TDMA and ...as bit error rate, PAPR, ICI, ISI ...the Bit Error Rate (BER) is evaluated by ...
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Quality Assessment in Image Compression by using Fast Wavelet Transformation with 2D Haar Wavelets
... [3] Vetterli, M. and Kovacevic, J., Wavelets and Subband Coding, Englewood Cliffs, NJ, Prentice Hall, 1995, http://cm.belllabs.com/who/jelena/Book/home.html. [4] G. Beylkin, R. Coifman, and V. Rokhlin, Fast wavelet ...
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Discrete Wavelet Transform for Image Compression and A Model of Parallel Image Compression Scheme for Formal Verification
... Wavelet transform divides the information of an image into approximation and detail ...after compression and decompression) is 100% then the compression is lossless as the image can be reconstructed ...
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An overview Survey on Various Video compressions and its importance
... a bit rate of up to ...lower bit stream to get lower resolution or frame ...expensive; bit stream scalability allows flexibility in the required processing power for ...
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Universal steganography model for low bit-rate speech codec
... the transform domain and hid the secret information by modifying some parameters in the transform domain, resulting in a moderate data hiding capacity and ...in low bit-rate VoIP audio ...
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Implementation of Low Bit Rate Vocoder for Speech Compression
... applications, low bit-rate speech compression methods are ...on low bit rate speech coding technology, mainly in TWELP and solved the problem of optimizing the program of ...
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Morphological Transform for Image Compression
... image compression was presented by Bogdan and Meadows ...lossy compression scheme for digital still images using Kohonen’s neural network ...image compression scheme for lossless compression ...
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Index Terms Discrete Wavelet Transform, Image Compression Haar wavelet transform lossy compression
... Wavelet transform. The fast Fourier transform (FFT) and the discrete wavelet transform (DWT) are both linear operations and the mathematical properties of the matrices involved in the transforms are ...
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