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This paper presents an algorithm that achieves high quality video compression with low memory bandwidth of reference frame data and latency due to computation in motion estimation for screen content. Efficiency is attained by content-adaptive placement of the search windows within the reference frames. In our scheme, the center location of the search window is decided by k most prominent motion vectors...
Human being normally uses natural language in form of written or spoken in their daily life. It is an entirely concept based on Artificial Intelligence, Computer Science and Linguistic resources. In Indian languages, Gujarati is an Indo — Aryan language with rich and high inflection. In these languages, several words have common root that's need to be reduced by using stemmer. Stemmer is used to reduce...
To cope with the significant computational complexity introduced by High Efficiency Video Coding (HEVC) standard, several parallelization schemes are introduced, such as Tiles, Wavefront parallel processing(WPP) and Dependent slice segments. These coding structures make multi-core processing possible. In this paper, we analyzed the degree of parallelism WPP can achieve and then proposed a multi-threaded...
We present a distributed and asynchronous versioning mechanism (DAVM) in this paper to identify consistent replicas for each encoding block in BW-RAID, which uses "mirroring and RAID4" encoding scheme to improve the system performance and disk space utilization. DAVM has three advantages: Firstly, it is distributed and asynchronous in management. Secondly, it is correct and workable in any...
A distributed system's interconnection structure emerges as a pattern in the system matrices. This pattern must be preserved through system analysis and control synthesis, and much has been written on these topics. A problem which has not received any attention to date is how to identify a pattern, given the linear system model. This paper proposes a method for identifying a pattern that is mathematically...
On the one hand, Constraint Satisfaction Problems (CSP) are a declarative and expressive approach for modeling problems. On the other hand, propositional satisfiability problem (SAT) solvers can handle huge SAT instances up to millions of variables and clauses. In this article, we present an approach for taking advantage of both CSP modeling and SAT solving. Our technique consists in expressively...
On the one hand, Constraint Satisfaction Problems (CSP) are a declarative and expressive approach for modeling problems. On the other hand, propositional satisfiability problem (SAT) solvers can handle huge SAT instances up to millions of variables and clauses. In this article, we present an approach for taking advantage of both CSP modeling and SAT solving. Our technique consists in expressively...
In this paper, we improve a computational conceptof logic-based consensus among agents that has been introducedrecently. A consensus is defined as a non-contradictoryfragment of the information conveyed by various agents suchthat this fragment does not logically conflict with any agent. In this study, we introduce an additional requirement to theconcept of consensus to avoid some paradoxical consensuses...
The Earth Exploration Satellite Services need to support a wide variety of spectral efficiencies and data rates based on channel conditions, such as a function of the elevation angle. For this purpose, Consultative Committee for Space Data Systems (CCSDS) presents the Advanced Coding and Modulation (ACM) 131.2-B-1 standard. The standard employs Serial concatenated convolutional Turbo-coding with variable...
High Efficiency Video Coding (HEVC) is a novel video compression standard. It provides significantly better performance than its predecessor, but introduces high computational complexity due its hierarchical block structure. Determining Coding Units (CU), Prediction Units (PU), and Transform Units (TU) size is a time consuming process, as block partitioning decisions are based on rate-distortion optimization...
This paper proposes a new hybrid encoding of finite linear CSP to SAT integrating order and log encodings. The former maintains bound consistency by unit propagation and works well for instances with small/middle domain sized variables and/or arity of constraints. The latter generates smaller CNF and is suitable for instances with larger domain sized variables, but its performance is not good in general...
The advent of the state-of-the-art video coding standard, High Efficiency Video Coding (HEVC) is expected to bring great changes to relevant fields of broadcasting, storage and communications. HEVC achieves higher coding gains compared to its previous video coding standards in terms of rate-distortion (R-D) performance with various improved coding tools. This leads to heavy computational complexity...
In this paper, a pristine method of tough digital video watermarking algorithm in H.264 compressed domain is articulated. Most of the video watermarking techniques interleave the watermark in I-frames but in this paper a fabulous method of blind low complexity video watermarking in P-frames for H.264 video is proposed. Our algorithm decides which 4×4 block within the macro-block of P-frame will be...
This paper addresses the patch size issue in sparse representation over learned dictionaries. A strategy for selecting the best patch size is proposed. It is empirically shown that the representation quality of natural image patches depends on the patch size considered. The proposed strategy selectively chooses the most appropriate patch size based on the resulting sparse representation error. The...
Nowadays, RFID systems have been widely deployed for applications such as supply chain management and inventory control. One of their most essential operations is to swiftly identify individual tags to distinguish their associated objects. Most existing solutions identify tags sequentially in the temporal dimension to avoid signal collisions, whose performance degrades significantly as the system...
Coding standard violations, defect patterns and non-conformance to best practices are abundant in checked-in source code. This often leads to unmaintainable code and potential bugs in later stages of software life cycle. It is important to detect and correct these issues early in the development cycle, when it is less expensive to fix. Even though static analysis techniques such as tool-assisted code...
Distributed software development is a globally accepted practice by large organizations for achieving significant cost savings in research and development. However when it comes to product quality, defect prevention and early detection has always been a challenge. Factors such as differences in language, coding standards and documentation styles across distributed teams can aggravate the situation...
To represent very large or small values, large range is required as the integer representation is no longer appropriate. These values can be represented using the IEEE-754 standard based floating point representation. This paper presents high speed ASIC implementation of a floating point arithmetic unit which can perform addition, subtraction, multiplication, division functions on 32-bit operands...
Many computer applications have been released targeting the implementation of a general Electronic Health Record (EHR) system. The main goal of an EHR system is to digitally store useful medical information about a patient's history and to share it across different health care units. Furthermore, the EHR systems should provide important information to the medical doctors during or after an encounter...
In this paper, we study delivery of two nested message sets over combination networks with an arbitrary number of receivers, where a subset of receivers (public receivers) demand only the lower priority message and a subset of receivers (private receivers) demand both the lower and the higher priority messages. We give a complete rate region characterization over combination networks with three public...
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