low bit rate
Efficient Low Bit Rate Low Latency Channelization in DECT
... creating low bit-rate channels with- out the ine ffi ciency associated with the use of short bursts, is to increase the frame ...the low bit-rate channels by reducing the high TDMA ...
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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 TWELP ...
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FMO-based H.264 frame layer rate control for low bit rate video transmission
... the rate control algo- rithm in the JM reference software follows the adaptive scheme as described in JVT-G012r ...adaptive rate control algorithm and improvements have been proposed by several ...adaptive ...
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Warped Discrete Cosine Transform-Based Low Bit-Rate Block Coding Using Image Downsampling
... (WDCT)-based low bit-rate block coding using image ...high bit-rate coding applications because of the overhead required to define the parameters of the warping ...Recently, low ...
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Steganography integration into a low-bit rate speech codec
... survive low bit-rate ...all low bit-rate codecs are based on analysis by synthesis (AbS) that uses effective methods such as linear predictive coding (LPC) to eliminate ...in ...
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Enhanced Adaptive Approach of Video Coding at Very Low Bit Rate Using MSPIHT Algorithm
... very low bit rate with the enhancement of performance by pro- posing an approach of modified Set Partitioning in Hierarchical Tree ...the low frequency frame is encoded by the H.264/AVC ...
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GiLBCSteg: VoIP Steganography Utilizing the Internet Low Bit Rate Codec
... than the samples that had been altered, although most of the time the difference between the two stayed within 5 dB, as shown in Figure 2. The difference in dB level did exceed 5 dB at some points, with the difference in ...
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Universal steganography model for low bit-rate speech codec
... Low bit-rate speech codec offers so many advantages over other codecs that it has become increasingly popular in audio communications such as mobile and VoIP (Voice over Internet Protocol) ...
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SECURE VOICE COMMUNICATION USING LOW BIT RATE SYSTEM FOR GSM USERS
... The reconstructed speech signal obtained as an output by the speech decoder is shown in Fig. 4. The signal is corrupted with noise and so its quality is degraded. However there is no loss of information to the GSM user ...
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A Very Low Bit Rate Image Compressor Using Transformed Classified Vector Quantization
... advantages of both the DCT and the CVQ while preserving good reconstructed image quality. The codebook uses a smaller dimension for its code vector, reducing the complexity of the sample space and decreasing the size of ...
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Performance Analysis of Hybrid DWT and DCT based Compression Techniques for Low Bit Rate
... its low computational complexity ,mostly for sub band coefficients and using Singular value decomposition(SVD)[5] in which original image is decomposed in form USV ’ , where U and V ’ are Eigen vectors whereas S ...
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Feature extraction for very low bit rate video coding
... Most video compression methods used to date operate on the principle of mak- ing inter-frame predictions using block matching motion estimates and coding the prediction errors using a DCT. These methods were originally ...
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Listless Block Tree Coding with Discrete Wavelet Transform for Embedded Image Compression at Low Bit Rate
... is low-pass subband which contains the coarse approximation of the source image and is represented as LL and there are three high-pass subbands which exploit details of an image across various directions – HL is ...
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Vector Quantization for Image Compression using Repulsion based FPCM
... in low bandwidth allotted channels in which significant low frequency data in the image is transmitted initially, and then less significant high frequency data are ...A low bit rate ...
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Facial Image Compression Based on Structured Codebooks in Overcomplete Domain
... The scheme presented in Figure 6 is used as a basic setup for this application. As it was discussed earlier, for the case of very-low-bit-rate regime, only one shape profile (simple step edge) is ...
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WIMAX OFDMA using high efficiency video Coding in VLSI accomplishment
... increasing day to day life so an effective video communication for wireless transmission is High Efficiency Video Coding in WIMAX - OFDMA.HEVC (High Efficiency Video Coding) is recently prepared new video coding standard ...
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Source Codec for Multimedia Data Hiding
... in low bit-rate audio signal like compressed speech in Voice over IP (VoIP) is still an emerging ...problem. Low bit-rate codec has certain signal processing models as well as ...
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International Journal of Computer Science and Mobile Computing
... High bit-rate data hiding and low bit- rate data hiding, where bit -rate means the amount of data that can be embedded as a portion of the size of the cover ...
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Satellite Image Compression using Discrete wavelet Transform
... The 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 features. G.Kwallace in [1] proposed a ...
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A Fast Soft Bit Error Rate Estimation Method
... number of components is too low, the corresponding pdf will be too smooth and then the BER less reliable. On the other hand, if this number is too high, this means that the same class of observed samples comes ...
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