RESEARCH PAPERS

encoder research papers


encoder research papers



A 1.3 TOPS H. 264/AVC single-chip encoder for HDTV applications
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ABSTRACT An H. 264/AVC encoder is implemented on a 31.72 mm2 die with 0.18 µm CMOS technology. A four-stage macroblock pipelining architecture encodes 720p, 30frames/s HDTV videos in real time at 108MHz. The encoded video quality is competitive

Wyner-Ziv video coding with low-encoder complexity
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ABSTRACT In current interframe video compression systems, the encoder performs predictive coding to exploit the similarities of successive frames. The Wyner-Ziv Theorem on source coding with side information available only at the decoder suggests that an asymmetric

2.8 to 67.2 mW low-power and power-aware H. 264 encoder for mobile applications
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Abstract SWLMs, and then shifted and reused in SRA. 87.5% A 2.8 to 67.2 mW H. 264 encoder is implemented on a memory power of IME is thus saved. 12.8 mM2 die with 0.1 I8 tm CMOS technology. The proposed Figure 2 shows the proposed fractional-pixel ME (

Multiview distributed video coding with encoder driven fusion
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ABSTRACT In this paper, a scheme based on multiview and Distributed Video Coding (DVC) is introduced. More specifically, a new fusion technique between temporal, homography and Disparity Compensation View Prediction (DCVP) side informations is

A rate control algorithm for the H. 264 encoder
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ABSTRACT The emerging coding standard H. 264 is mainly intended for video transmission in all areas where bandwidth or storage capacity is limited (eg video telephony or video conferencing over mobile channels and devices). Since its main applications concern

Integrated holographic encoder for wavelength-hopping/time-spreading optical CDMA
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ABSTRACT We report on the application of an integrated holographic device to the generation of two-dimensional (time-frequency) optical codes for use in optical code-division multiplexing based on wavelength encoding/time spreading. The dual code device is

Real time global motion estimation for an MPEG-4 video encoder
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ABSTRACT This contribution presents a powerful method for real-time capable global motion estimation. Up to now no further solutions are known to the authors. Global motion estimation is a great tool in MPEG-4 coding process to improve overall visual quality. The

22.6 A 5mW MPEG4 SP Encoder with 2D Bandwidth-Sharing Motion Estimation for Mobile Applications
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The MPEG-4 standard has been widely adopted for video compression on mobile devices. MPEG-4 codec designs [1-2] have been reported that address the low power requirements demanded by mobile devices. In this paper, a 5mW MPEG-4 SP encoder is presented with

HM9: High Efficiency Video Coding (HEVC) Test Model 9 Encoder Description
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Abstract The JCT-VC established a 9th HEVC test model (HM9) at its 11th meeting in Shanghai from 10 October to 19 October 2012. This document serves as a source of general

A single-chip MPEG2 MP ML video encoder LSI with multi-chip configuration for a single-board MP HL encoder
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Page 4. 4 Trend of MPEG2 video encoder LSI Three-chip MP ML in 1995 (Mitsubishi) Two-chip SP ML in 1995 (NTT) 5 Functionality of Video Encoder Standard: SP ML, MP ML and 4:2:2Profile ML with a single chip MP HL (4:2:0 or 4:2:2) with multiple chips

Automatic calibration of sinusoidal encoder signals
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ABSTRACT Precision positioning and manipulation systems often rely on data from sensors delivering a sinusoidal signal pair. These signals can be interpolated to provide a high resolution measurement. The paper presents a novel method for removing signal

x264: A high performance H. 264/AVC encoder
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The joint effort by ITU-T's Video Coding Experts Group and ISO/IEC's Moving Pictures Experts Group resulted in standardization of H. 264/MPEG-4 AVC in 2003 . Like previous standards, H. 264/AVC specifies only a decoder, therefore allowing for improvement in

High performance two-symbol arithmetic encoder in JPEG 2000
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ABSTRACT In JPEG 2000, the Arithrneric Encoder (AE) is the throiighpirt bottleneck. An AE capahle of encoding mnltiple symho1. s per cycle is an cient way to increase the throitghput. for higli-i-esohiiion inluge. In this paper, a twosyinhol AE arcliitectiire is pi-

Computational control of an H. 264 encoder through Lagrangian cost function estimation
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ABSTRACT A complexity control algorithm for an H. 264 encoder is proposed. Computational savings are achieved by early prediction of skipped macroblocks prior to motion estimation through estimating a Lagrangian ratedistortion-complexity cost function.

Analysis of a surface encoder in wave optics
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Page 1. Analysis of a Surface Encoder in Wave Optics Y. Watanabe, W. Gao, H. Shimizu and S. Kiyono Department of Keywords: Position Measurement, Surface Encoder, Wave Optics, Machine Tool CarriageAbstract. A surface

Implementation of a fast H. 263+ encoder/decoder
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Abstract In this paper, we propose efficient video coding algorithms that lead to a significant speed improvement in low bit rate video coding, while maintaining high video reproduction quality. We also map some of the SIMD structured components of video coding onto Intel's

Characteristics of a sixteenstate turbo-encoder/decoder (turbo4)
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ABSTRACT This paper presents the characteristics of an integrated circuit called" turbo4" which can be used as a turbo-encoder or as a turbo-decoder. The turbo-encoder is built using a parallel concatenation of two recursive systematic convolutional codes with

Comparative study of multiencoding schemes for OCDM using a single multiport opticalencoder/decoder
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ABSTRACT We analyse the performance of multicode shift keying modulation in an optical code-division multiplexing network scenario and demonstrate the effectiveness of using a single multiport optical encoder/decoder as a source coding element. We assign a set of

Test of a turbo–encoder/decoder
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Abstract This paper presents tests on the integrated circuit called" turbo4" which can be used as a turbo-encoder or as a turbo-decoder. The turbo-encoder is built using a parallel concatenation of two recursive systematic convolutional codes with constraint length k= 5.

GOP level parallelism on H. 264 video encoder for multicore architecture
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ABSTRACT H. 264 is a popular codec used for encoding the videos that are hosted on the video server and delivered over the internet. Achieving real time encoding still remains a challenging problem. A possible solution to minimize the encoding time would be to

Learning new semi-supervised deep auto-encoder features for statistical machine translation
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Abstract In this paper, instead of designing new features based on intuition, linguistic knowledge and domain, we learn some new and effective features using the deep autoencoder (DAE) paradigm for phrase-based translation model. Using the unsupervised

Fast Mode Decision for H. 264/AVC Encoder Based on Interblock Correlation
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Abstract The up-to-date video coding standardH. 264/AVC could achieve higher encoding performance compared with previous versions since it employs many tools to increase the coding accuracy, particularly the rate-distortion optimization technique for mode decision.

Encoder And Decoder For (15, 11, 3) and (63, 39, 4) Binary BCH Code With Multiple Error Correction
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ABSTRACT In the present Digital Communication systems, it is highly possible that the data or message get corrupted during transmission and reception through a noisy channel medium. To get the error free communication we need Error correction code. BCH codes

Design of Coder Architecture for Set Partitioning in Hierarchical Trees Encoder
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Abstract High performance Arithmetic Coder architecture is proposed in this paper for image compression. This arithmetic coder architecture is used in Set Partitioning. In Hierarchical Trees for further compression of the Discrete Wavelet Transform decomposed images.

ASYNCHRONOUS TIME ENCODER BASED QUASI-STATIC MODELLING FOR HUMAN AREA NETWORK IN VANET
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ABSTRACT Power constraints play a key role in designing Human Area Networks (HANs) for bio authentication vehicle based on driver's identity. To alleviate the power constraints, we advocate a design that uses an asynchronous time encoding mechanisms for For unsupervised problems like clustering, linear or non-linear data transformations are widely used techniques. Generally, they are beneficial to data representation. However, if data have a complicated structure, these techniques would be unsatisfying for clustering.

Simulation of H. 264 based Real time Video Encoder for Underwater Acoustic Channel
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Abstract In order to transmit a better quality video in under water acoustic channel, compression schemes with high compression ratio and less time complexities are required. Conventional coding schemes can deliver high compression ratios but need to be

Software-Based Encoder for UHD Digital Signage System
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ABSTRACT With the rapid growth of the digital signage industry, high resolution video contents are used for digital signage. In this situation, advertisers want to use UHD video contents to advertise their product. In this paper, we propose a softwarebased encoder for

An initial positioning method on magnetic rotary encoder applying to PMSM
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Abstract. Magnetic rotary encoder can be used to detect the rotor position of PMSM, in order to realize vector control of PMSM. An initial positioning method on magnetic rotary encoder based on open loop control system was presented to calculate absolute difference of average

A method of constructing the half-rate QC-LDPC codes with linear encoder, maximum column weight three and inevitable girth 26
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ABSTRACT This paper presents a method of constructing the half-rate irregular quasi-cyclic low- density parity-check codes which can provide linear encoding algorithm and their H- matrices may contain almost the least 1 elements comparing with H-matrices of all

Validation of a Real-time AVS Encoder on FPGA.
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ABSTRACT A whole I frame AVS real-time video encoder is designed and implemented on FPGA platform in this paper. The system uses the structure of the flow calculation, coupled with a dual-port RAM memory between/among the various functional modules. Reusable

Design and Implementation of High Security Optical Shaft Encoder for an Artificial Limb using Xilinx on FPGA
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Abstract FPGA technology is used to make logic systems and it is majorly based on Computer-Aided Design (CAD). In this paper, the main aim is to introduce and implement our own logic for high security optical shaft encoder for an artificial limb using Xilinx

H. 264 Video Encoder Standard–Review
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ABSTRACT This paper presents a study on diverse techniques for H. 264 video compression using diverse view filling formats and benchmarking their acts. In the conventional H. 264 standard, identified size of Macro-blocks (MBs) is cut after one single

A Mod-Encoder Compression Algorithm for Secure Communication
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ABSTRACT Now a days, the data communications over internet is increased, as the internet usage is increased, the traffic and adversary attacks on the communication path also increased. so to avoid all the problems, secure data communication is needed for user

Analyzing the effect of an integrate and fire encoder and decoder in feedback
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ABSTRACT The human motor system has often been studied as a feedback control problem, but the integration of binary neuronal encoding in these formulations has been largely overlooked. Neuronal encoding has, however, been studied in open loop, with efforts

The Design and Implementation of Real Time Encoder System.
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Abstract This paper designed and implemented a next-generation solution for the Internet Broadcasting system applying FlashVideo. Compressing HD Class images in real time currently being broadcast in the field, this is a system that can service VOD as well as

The Likelihood Encoder
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For source coding we demonstrate the use of a new likelihood encoder by applying it to obtain simple achievability proofs of rate-distortion theory, distributed source coding, and source coding for secrecy. The encoder selects codewords based on likelihoods with

LDPC Encoder Based Linear Feedback Shift Register Structure
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Abstract. The non-rule circulates LDPC code is the core of the forward-acting error correction code of our country digital television broadcasts in ground DTMB transmission standard. In view of sub block characteristic of this LDPC code generates matrix. It has designed a kind

encoder encryption research papers



Hardware-efficient encryption encoder and decoder unit
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ABSTRACT The distribution and retrieval of multimedia data over wireless networks have become widespread, thus creating the need for secure transmission of data over networks. However, one of the main problems with the secure transmission of digital data over

Performance Study of a Selective Encryption Scheme for the Security of Networked, Real-Time Video.
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The network intruder must first separate the encrypted portions of the stream, and then still faces the complexity of the encryption algorithm. Aegis acts as a stream filter between the MPEG encoder/ decoder and the transmission mechanism.

Adding safeness to dynamic adaptation techniques
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For exam- ple, if the adaptive action is to change the encryp- tion filter, then the intermediate adaptive steps include changing the encryption encoder, changing the decryp- tion decoder, monitoring the message buffer to deter- mine when it is safe to swap the encoder or

A combined encryption and error correction scheme: AES-Turbo
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decoding. According to general perspective of the system Turbo Encoder block is embedded in AES encryption block in the first round after subbytes block. The remaning steps of the AES encryption are followed normally . Subscriber-limited reception television broadcast security encoder-decoder system US RE31735 E.Abstract. A method and apparatus for encoding only to authorized subscribers, the television signals including a video portion, an aural portion, and an encryption codes signal We supplied standard parameters to assign the rectangular ROI and used the FROI flag to trigger the ROI encryption in our modified JPEG 2000 encoder. Fig. In other words, the proposed encryption method is compressibility equivalent to the standard JPEG 2000 encoder.

Performance Study of a Selective Encryption Scheme for the Security of Networked, Real-Time Video.
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The network intruder must first separate the encrypted portions of the stream, and then still faces the complexity of the encryption algorithm. Aegis acts as a stream filter between the MPEG encoder/ decoder and the transmission mechanism.

Adding safeness to dynamic adaptation techniques
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For exam- ple, if the adaptive action is to change the encryp- tion filter, then the intermediate adaptive steps include changing the encryption encoder, changing the decryp- tion decoder, monitoring the message buffer to deter- mine when it is safe to swap the encoder or

A combined encryption and error correction scheme: AES-Turbo
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decoding. According to general perspective of the system Turbo Encoder block is embedded in AES encryption block in the first round after subbytes block. The remaning steps of the AES encryption are followed normally . Page 2.

Image Stegano-Cryptography Based on LSB Insertion Symmetric Key Encryption
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38 III. A STEGO-CRYPTOGRAPHIC MODEL Transmitter side: Encryption – Encoder is used to encode the text message by using symmetric- key algorithm the output of this encoder will be the cipher text. Now this cipher text will be hiding in the image.

Digital video encryption algorithms based on correlation-preserving permutations
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(5) Constant/near-constant bitrate. It is often required that the encryption transformation preserves the size of a bitstream, where the output produced by an encryption-equipped encoder and the output pro- duced by an ordinary encoder have same or similar sizes.

Simulation of image encryption using AES algorithm
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3. DESIGN OF 128BIT ENCODER 3.1 Methodology The encryption process is iterative in nature.Each iterations are known as rounds.For each round 128 bit input data and 128 bit key is required.That is,need 4 words of key in one round.So the input key must be expanded to

Compression independent reversible encryption for privacy in video surveillance
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Figure 1 highlights the opportunities for encryption in a general video encoder. The main techniques used in video privacy systems are summarized below. Obfuscation. MPEG-2, H.264, VP-6 etc. Video encoder Region encryption Encryption key Camera Region selection

Hardware architecture for simultaneous arithmetic coding and encryption
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HARDWARE ARCHITECTURE In this section, we discuss the hardware architecture for arithmetic coding using chaotic maps, and N-ary chaotic arithmetic encryption. The chaotic encoder operation inverse inverse mapping of interval [0,1) on the chaotic map according to input

An Approach to ensure Security through Bit-level Encryption with Possible Lossless Compression
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291 An Approach to ensure Security through Bit-level Encryption with Possible Lossless Compression The scheme used in the proposed cipher is substitution- based. Encryption through this proposed cipher also results in possible lossless compression.

High performance multithreaded model for stream cipher
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synchronization techniques. The model divides the execution of the stream cipher into three stages: Thread Creation Phase (TCPr), Keystream Generation Phase and the Encryption (Encoder) Phase. The implementation and

Architectures for Simultaneous Coding and Encryption Using Chaotic Maps.
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HARDWARE ARCHITECTURE In this section, we discuss the hardware architecture for arithmetic coding using chaotic maps, and N-ary chaotic arithmetic encryption. The chaotic encoder operation inverse inverse mapping of interval [0,1) on the chaotic map according to input

A chaos-based multiple security encryption system for compressed video
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Besides, the compression performance and the computation time comparison among the selective encryption, all entropy encoder output encryption, and the original compressed bitstream without encryption were also examined.

Fast encryption methods for audiovisual data confidentiality
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The encoding process of the proposed cipher/encoder is shown in Figure 7 (b). Since each symbol in the original data usually corresponds to more than 3 bits in the Huffman bitstream, the net encryption cost of the proposed algorithm is less than one CPU operation for each bit

Partial Video Encryption Using Random Permutation Based on Modification on Dct Based Transformation
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applying these transforms based on pre-designed secret key, partial encryption is achived. For the transmission of encrypted video, the encrypted video frames are quantized and encoded. To overcome the drawbacks of Huffman coding, adaptive arithmetic encoder is used at

Masking video information by partial encryption of H. 264/AVC coding parameters
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attacks. According to the adopted scheme, the coding parameter selected for encryption is altered on the basis of a secret key, 56 bytes long, generated at the encoder side by an LFSR, suitably configured and initialized. At

An intelligent text data encryption and compression for high speed and secure data transmission over internet
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The intelligent dictionary based encryption provides the required security. The output of the BWT transform is usually piped through a move-to-front stage, then a run length encoder stage, and finally an entropy encoder, normally arithmetic or Huffman coding.

Turbo-Based Encryption with Error Correction Capability
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Journal of Computational Information Systems 7:8 (2011) 2876-2885 2878 This section proposes two encryption schemes based on the Turbo encoder. Moreover, another interleaver out of the Turbo encoder is adopted to enhance the security of the encryption scheme.

Encryption of Biometric Templates using One Time Biometric Transform
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goal of securing the communication channel by generating dynamic information to be sent on the communication channel from encoder(feature extractor) to the decoder(matcher). This dynamic information could be gener- ated by changing the keys for encryption, by including

KEELOQ Microcontroller-based Code Hopping Encoder
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dual encoder. As it is, this design can be used to implement a secure system transmitter that will have the flexibility to be designed into various types of KEELOQ receiver/ decoders. The software used in this implementation makes use of the PIC16F636 internal encryption

High Resolution Image Encryption Reconstruction Using Scalable Codes
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That is to say, the image encryption algorithm that we have proposed is semantically secure against any PPT adversary. B. ENCRYPTED IMAGE ENCODING Although an encoder does not know the secret key and the original content, he can still compress the encrypted data as

A new secure and efficient scheme of ADPCM encoder based on chaotic encryption
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ABSTRACT This paper presents a new secure variant of ADPCM encoders that are adopted by the CCITT as Adaptive Differential Pulse Code Modulation. This version provides encryption and decryption of voice simultaneously with operations ADPCM encoding and


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