low bit rate compression
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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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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Feature extraction for very low bit rate video coding
... A very basic aspect of the contents of almost all images is that it is a 3-D scene that is projected on to the 2-D image. This knowledge can be used in compression schemes in several ways. One consequence is that ...
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GiLBCSteg: VoIP Steganography Utilizing the Internet Low Bit Rate Codec
... Another study into VoIP steganography was conducted by Naofumi Aoki [8]. The author used the closed source high bit rate G.711 audio codec to embed semi-lossless steganography in it. High bit ...
6
An energy-efficient low-memory image compression system for multimedia IoT products
... One-line compression mode; 1D: One-dimensional; 2L mode: Two- line compression mode; 2D: Two-dimensional; BRC: Bit rate control; CABAC: Context-adaptive arithmetic coding; CR: ...
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Enhanced Adaptive Approach of Video Coding at Very Low Bit Rate Using MSPIHT Algorithm
... Generally, there is an increase in multimedia images. Storage and transmission become difficult, so there is need of high device storage and large bandwidth network systems. The wavelet decomposition method is im- ...
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Facial Image Compression Based on Structured Codebooks in Overcomplete Domain
... In this section, the case of single source distributed coding system with side information is discussed for the case of very-low-bit-rate (less than 0.1 bpp) compression of passport photo ...
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A Very Low Bit Rate Image Compressor Using Transformed Classified Vector Quantization
... different compression ratios even though it is a VQ-based compression ...different compression ratios while encoding or decoding ...the compression performance of the TCVQ reveals its ...
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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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Selecting stimuli parameters for video quality studies based on perceptual similarity distances
... as compression level or image restoration ...(e.g. bit-rate or noise variance) applied to an image are usually not linearly correlated with their perceived ...or low quality ...
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Performance Analysis of Hybrid DWT and DCT based Compression Techniques for Low Bit Rate
... As seen from Table.III, PSNR for Video Clips 1, 2, 3 and 4 when DWT 1st level is applied is comparatively better then PSNR obtained when DCT is applied on them. Thus for better video quality, DWT is good then DCT.DWT-1 ...
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Listless Block Tree Coding with Discrete Wavelet Transform for Embedded Image Compression at Low Bit Rate
... information. This is an array of coefficient values in which each coefficient has four bits. LBTC uses eight markers to store the significant coefficients [22]. In this a coefficient is not addressed by two coordinates ...
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SECURE VOICE COMMUNICATION USING LOW BIT RATE SYSTEM FOR GSM USERS
... The compression and decompression process is performed by speech coders using various ...are bit rate and speech quality. The bit rate is the measure of how the speech signal has been ...
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Vector Quantization for Image Compression using Repulsion based FPCM
... achieve low bit rate, many VQ schemes like side-match VQ (SMVQ) [9], classified SMVQ (CSMVQ) [10] and Gradient dependent SMVQ (GSMVQ) [6], have been ...achieve low bit ...
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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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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 ...at low bit ...
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A Novel Algorithm to Improve the Performance of the Decoder Without Affecting the Compression Ratio to Increase the Instruction Match Rates
... The first code-compression technique for embedded processors was proposed by Wolfe and Chanin. Their technique uses Huffman coding, and the compressed program is stored in the main memory. The decompression unit ...
7
A Novel Algorithm to Improve the Performance of the Decoder Without Affecting the Compression Ratio
... as bit streams, the limited memory size, and access bandwidth become the key factors in determining the different functionalities that a system can be configured and how quickly the configuration can be ...
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International Journal of Computer Science and Mobile Computing
... OPNET modeler presents the most realistic approach in modeling and simulation of computer networks. Its object oriented approach and hierarchical methodology in problem solving makes it more preferable. Seven nodes with ...
11
A New Selection Algorithm to Improve the Compression Ratio
... as bit streams, the limited memory size, and access bandwidth become the key factors in determining the different functionalities that a system can be configured and how quickly the configuration can be ...
7