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2011 International Conference on Image Analysis and Signal Processing

Date 21-23 Oct. 2011

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Displaying Results 1 - 25 of 159
  • [Front and back cover]

    Publication Year: 2011, Page(s):c1 - c4
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    Freely Available from IEEE
  • [Title page]

    Publication Year: 2011, Page(s):i - ix
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  • Table of contents

    Publication Year: 2011, Page(s):x - xviii
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  • Selected mapping and partial transmit sequence schemes to reduce PAPR in OFDM systems

    Publication Year: 2011, Page(s):1 - 5
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1087 KB) | HTML iconHTML

    Orthogonal Frequency Division Multiplexing (OFDM) has been currently under intense research for broadband wireless transmission due to its robustness against multi-path fading. However, OFDM signals are characterized by large peak-to-average power ratios (PAPR), which can reduce the system efficiency. To overcome this problem, in this paper, based on the definition of the PAPR in OFDM systems, we ... View full abstract»

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  • A novel method for frame rate up-conversion

    Publication Year: 2011, Page(s):6 - 9
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (881 KB) | HTML iconHTML

    In this paper, we proposed a new motion compensated interpolation (MCI) algorithm for frame rate up-conversion (FRUC) in multimedia applications. First, we propose the bilateral motion estimation (ME) scheme to obtain the motion field of an interpolated frame without yielding the hole and overlapping problems. Secondly, we partition the block which the sum of bilateral absolute differences (SBAD) ... View full abstract»

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  • A fast algorithm for discrete sine transform using first-order moment

    Publication Year: 2011, Page(s):10 - 15
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1029 KB) | HTML iconHTML

    A fast algorithm for discrete sine transform (DST) is proposed. Through derivation the traditional DST is transformed into the computation of a first-order moment, which can be implemented by a simple parallel structure without multiplications. The comparison with some existing methods on the computation and the hardware complexity shows the advantage of our method under certain conditions. The ap... View full abstract»

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  • Hooke and jeeves algorithm for linear least-square problems in sparse signal reconstruction

    Publication Year: 2011, Page(s):16 - 20
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1284 KB) | HTML iconHTML

    Greedy algorithms are the major algorithmic approaches to sparse signal reconstruction from an incomplete set of linear measurements. All the greedy algorithms involve solving linear least-square problems. This is usually implemented via CGLS. Though CGLS uses a fixed number of iterations, experiments confirm that CGLS costs more than 50 percent of the total running time of greedy algorithms. In o... View full abstract»

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  • Low SNR signal time-frequency analyzing method

    Publication Year: 2011, Page(s):21 - 25
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1651 KB) | HTML iconHTML

    Signal time-frequency analysis under low signal-to-noise ratio (SNR) conditions is an important part of signal processing. As Wigner-Ville distribution (WVD) transformation can save all the traits of the original signal in the special space where the frequency is zero, a new method is proposed to extract the signal time-frequency relationship under low SNR conditions and to estimate the extent to ... View full abstract»

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  • Research on Lhasa Tibetan prosodic model of journalese based on respiratory signal

    Publication Year: 2011, Page(s):26 - 30
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (901 KB) | HTML iconHTML

    In accordance with the actual development for Tibetan speech synthesis, the paper has taken news text as training corpora, analyzed the speech and prosodic features of Tibetan Lhasa dialect and confirmed the respiratory signal parameters with prosodic features. It has confirmed 6 classes of 39 dimensions context feature parameters in terms of previous prosodic structure analysis results. It uses R... View full abstract»

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  • On Comparison Of Pilot-Aided OFDM channel estimation algorithms

    Publication Year: 2011, Page(s):31 - 35
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (964 KB) | HTML iconHTML

    Orthogonal Frequency Division Multiplexing (OFDM) is an attractive modulation technique for communication between unmanned underwater vehicles (UUV) and a distant mother platform. The objective of this study is improving channel estimation accuracy in OFDM system because channel state information is required for signal detection at the receiver and its accuracy affects the overall performance of t... View full abstract»

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  • Echo energy analysis for pulse position modulation sequences used for non-crosstalk sonar systems

    Publication Year: 2011, Page(s):36 - 41
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1095 KB) | HTML iconHTML

    High echo energy is important in sonar systems to increase measurement range. A sufficient condition is derived and obtained to achieve high echo energy for pulse position modulation excitation sequences. This paper addresses echo energy analysis under the premise that crosstalk between different sonar transducers can be avoided. Experiments validate the derived sufficient condition. View full abstract»

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  • Dual-ADC based digital calibration of timing skew for a time-interleaved ADC

    Publication Year: 2011, Page(s):42 - 45
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (824 KB) | HTML iconHTML

    The performance of time-interleaved analog-to-digital converters (TIADCs) is seriously restricted by the mismatch of the timing skew between ADC channels. The concept of dual-ADC based calibration is that setting two ADC to sample the same input signal synchronously, and the differences of the two outputs are used in calibration algorithm to estimate and compensate the errors in each ADC. Based on... View full abstract»

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  • A family Particle Swarm Optimization based on the family tree

    Publication Year: 2011, Page(s):46 - 51
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1002 KB) | HTML iconHTML

    The concept of the family was previously introduced into Particle Swarm Optimization (PSO). To further study the multi-group structure of the Family PSO (FPSO), this paper introduces the family tree into the FPSO. It made different families form a family tree and a swarm consisted of some family trees. In the experiment, topological distance was used to form a family and three spatial structures o... View full abstract»

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  • Stability analysis of FAST TCP using PI transfer function

    Publication Year: 2011, Page(s):52 - 55
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (830 KB) | HTML iconHTML

    A new approach for the stability analysis of FAST TCP system is used for the investigation of one special kind of dynamical systems. This approach is based on results from the stability theory, optimal control theory, and variational methods. The optimal control approach allows us to obtain sufficient algebraic stability conditions for FAST TCP system. The way to obtain necessary and sufficient co... View full abstract»

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  • Research on E-government information service mechanism based on unified communication technology

    Publication Year: 2011, Page(s):56 - 61
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (401 KB) | HTML iconHTML

    Unified communication can provide flexible service for e-government, and also, can achieve more efficient government business collaboration with low-cost. In this paper, we discuss the government information service mechanism based on unified communication technology that integrates voice, data, and video services, and so on. View full abstract»

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  • 3-D geometric signal compression method based on compressed sensing

    Publication Year: 2011, Page(s):62 - 66
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1123 KB) | HTML iconHTML

    This paper provides a compression method of three-dimensional meshes based on compressed sensing. First, this method gets the 3-D geometric signal through discrete representing the three-dimensional meshes. Then, we construct a basis using Laplace operator of the three-dimensional meshes. Thus, we get the sparse representation of the 3-D geometric signal based on this basis. Last, we complete comp... View full abstract»

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  • The research on arabic numeral symbol's use in poster design

    Publication Year: 2011, Page(s):67 - 70
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (9682 KB) | HTML iconHTML

    This article presents the origin and development of Arabic numbers, the effect and the culture differences in graphic spread. We analyze the Arabic numeral symbols in graphic originality, and draw out the development space of the Arabic numeral symbols in shape and meaning of poster design. As a kind of mathematical symbols without national boundary, the Arabic numeral symbols have a large space i... View full abstract»

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  • An algorithm based on HRRP for target recognition

    Publication Year: 2011, Page(s):71 - 73
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (526 KB) | HTML iconHTML

    Based on the scattering center model, the dissertation makes detailed analysis on the physical property of HRRP samples and points out the HRRP sensitivity of target-aspect. The average HRRP for feature extraction is presented in a small target-aspect after the HRRP preprocessing methods are discussed, and experiment results based on the SVM classifier are given to show the efficiency of the propo... View full abstract»

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  • The prefix and suffix query of Chinese word segmentation algorithm for maximum matching

    Publication Year: 2011, Page(s):74 - 77
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (177 KB) | HTML iconHTML

    Chinese word segmentation is a key technology for automatic summarization. Whether the segmentation is successful and has no ambiguity or not will directly affect sentence weight calculation. In the segmentation process, the structure of word segmentation dictionary is particularly important. A rational structure of a word segmentation dictionary can improve the segmentation process of the diction... View full abstract»

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  • Skin color and feature-based face detection in complicated backgrounds

    Publication Year: 2011, Page(s):78 - 83
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4734 KB) | HTML iconHTML

    An efficient face detection scheme that can detect multiple faces in a color image with a complex environment and different illumination levels is proposed in this paper. The first stage adopts skin color-based segmentation to search potential face regions. The second stage detects the lip in potential face regions using a lip color model and searches the eyes using geometry textures. The last sta... View full abstract»

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  • Blurring length estimation using ringing artifacts in a deblurred image

    Publication Year: 2011, Page(s):84 - 88
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5531 KB) | HTML iconHTML

    The restoration quality of a motion-blurred image is highly dependent on the estimation accuracy of the motion blurring parameter. This manuscript presents a novel and precise method for estimation of the motion blurring length, wherein the ringing artifact amount of a deblurred image is measured by energy proportion contained in appropriate frequency bands, and a blurring length with minimum ring... View full abstract»

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  • Ball Carrier Detection and Behavior Recognition in Basketball Match Using Covariance Descriptor

    Publication Year: 2011, Page(s):89 - 93
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1912 KB) | HTML iconHTML

    This paper presents a novel approach for ball carrier detection and behavior recognition in a basketball match. Considering the cluttered background, fast motion of the players and the low resolution of the player images in the basketball match video, a covariance descriptor is adopted to fuse multiple visual features of the player, which can be characterized as a point on the Riemannian manifold ... View full abstract»

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  • Fast bilateral filtering using image redundancy reduction

    Publication Year: 2011, Page(s):94 - 97
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1839 KB) | HTML iconHTML

    A bilateral filter is an edge-preserving filter that is widely applied in the image processing field in spite of its length of computation time and space complexity. In this paper, we propose a fast filtering method using image redundancy reduction; our approach can reduce the filtering computation time by reducing the redundant operations between adjacent blocks of pixels. We also apply this appr... View full abstract»

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  • NMS-based blurred image sub-pixel registration

    Publication Year: 2011, Page(s):98 - 101
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (686 KB) | HTML iconHTML

    Sub-pixel accurate registration is the challenging aspect of super-resolution reconstruction. However, the blur contained in the low-resolution images will result in inaccurate registration and an unsatisfactory reconstruction result. Therefore, this paper introduces a blurred image sub-pixel registration method based on Non-Maxima Suppression (NMS). By analyzing the relationship between the image... View full abstract»

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  • Sea-surface image super-resolution based on sparse representation

    Publication Year: 2011, Page(s):102 - 107
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (895 KB) | HTML iconHTML

    Learning-based super-resolution (SR) is a popular SR technique that uses application-specific priors to recover missing high-frequency components in low resolution (LR) images. In this paper, we propose a novel approach for obtaining high-resolution (HR) image with solely a single low-resolution input sea-surface image. It is based on sparse representation via dictionary learning. As the image pat... View full abstract»

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