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Content Based Image Retrieval (CBIR) systems that search similar images in a large database are attracting more and more research interests recently, and have been applied to medical image characterization for expert's experience sharing. One challenging task in CBIR is how to extract features for effective image representation. Therein sparse coding technique has been proven to be an effective way...
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...
The HEVC(H.265) has brought in significant improvements in terms of coding efficiency. However, the reduction in bitrates comes along with an increment in computational complexity. This paper presents a data mining approach to reduce the complexity of inter partition modes in HEVC. Determining the CU-splitting in inter partition modes requires substantial resources, so the goal of the work is to terminate...
Multimedia application on mobile phone platform is a hot topic in Information Technology industry accompanying with the advances of technologies in Internet, smart operating system and wireless network. The development of streaming media technology boosts the audio and video application over the Internet. This paper describes a mobile video live streaming system with Wi-Fi/4G mobile phone to capture...
The birefringence of fiber quantum channel is compensated for without a reference optical beam always in an interrupt way. We propose and demonstrate a scheme of continuous active polarization compensation based on the feedback of the quantum bit error rate. Two experiments with and without compensation are performed in lab and the records of sifted key rate and quantum bit error rate prove that the...
We present a novel free-space communication link using orbital angular momentum (OAM) array encoding/decoding. By employing an array with 4 spatial locations each with 5 possible OAM beams, we experimentally demonstrate a high base OAM encoding/decoding with 625 states for free-space optical communications.
We experimentally demonstrate m-ary encoding/decoding using visible-light Bessel beams carrying orbital angular momentum (OAM) for free-space obstruction-free optical communications. The bit-error rate (BER) performance of hexadecimal and 32-ary encoding/decoding are investigated. A zero BER of hexadecimal encoding/decoding is observed after decoding 500 symbols with obstruction.
Service reuse aims at improving the efficiency of software development and providing common functionalities which are not linked to any particular business process. However, the existing service reuse methods are confined to the reuse of atomic services or processes encapsulated as stand-alone services. How to reuse arbitrary granularities of Service Process Fragment (SPF) is a challenging problem...
According to the problem of low efficiency of the network transmission system based on TCP in the case of large time delay and loss rate, this paper proposes an efficient method for network transmission system based on digital fountain. The principle of the digital fountain is described and a new system is designed and implemented on the basis of Raptor Codes and UDP. The results are given and indicate...
Visualizing 2D and 3D anatomical information simultaneously within an X-ray image is challenging. Multiple monitors are required in the operating room to enable visualization of anatomical data by the surgeon. Consequently, this results in an interruption during the operation for proper assessment of information. In this paper, we introduce an interactive visualization of the 3D data from new perspectives...
By exploiting non-degenerate four-wave mixing in highly nonlinear fibers assisted by two phase-modulated pumps, we report optical multicasted hexadecimal coding/decoding of 16-QAM. Constellation manipulation for a 10-Gbaud/s 16-QAM signal is demonstrated with OSNR penalties of <2.4 dB for multicasted coding and <1.6 dB for decoding.
HTTP streaming recently emerges on Internet, and is conveniently accessed from multiple kinds of platforms. It lowers complexity for implementing media streaming applications by relying on pervasively adopted web servers. The media content is divided into segments of the fixed time intervals before being independently requested by clients. This paper studies choices of these fixed time intervals,...
We propose and demonstrate optical hexadecimal coding/decoding of 16-QAM using degenerate four-wave mixing (FWM) in highly nonlinear fibers (HNLFs). Constellation manipulation for variable coding/decoding of a 10-Gbaud/s 16-QAM signal is implemented with an OSNR penalty of <1.1 dB with CW pump and <1.2 dB with phase-modulated pump Key.
Like feedback strategy, coding scheme is an important part of networked control system designing as well. In this paper, we design the feedback law to minimize the channel rate required to stabilize the system when the coding scheme is restricted to be memoryless. The main point is to write the feedback gain matrix as an explicit expression of the closed-loop eigenstructure data. Then the constraint...
We report a novel method for all-optical generation of differential Manchester phase-shift keying (DMCPSK) coding. Multicasting generation of 40 Gbit/s DMCPSK coding is experimentally demonstrated using non-degenerate four-wave mixing (ND-FWM) in a highly nonlinear fiber (HNLF).
Based on neural network, an improvement scheme that iterative matrix replace secondary derivative has been developed by introduced quasi-Newton algorithm. Profile code based on probability has been used and comparison of window width and learning training has been completed. The experiment results indicate that the prediction for secondary structures of protein obtain a very good effect based on neural...
The emergence of high-definition video into mainstream applications has imposed a challenge to researchers and engineers in the field: achieving optimal balance between programmability and hardware efficiency. The DM6467 System-on-Chip (SOC) from Texas Instruments provides both DSP-like design flexibility and ASIC-like performance at the same time for codec designs. In this paper, we investigate how...
Finite fields have been used for numerous applications including error-control coding and cryptography. This paper presents a high-speed area-efficient architecture for arithmetic that can support arbitrary irreducible polynomials in GF(2m). The arithmetic unit can perform the Galois field arithmetic operations of addition, subtraction, multiplication, squaring, inversion and division. The least significant...
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