Huffman codes are being widely used as a very efficient technique for compressing data. To achieve high compressing ratio, some properties of encoding and decoding for canonical Huffman table are discussed. A study an...
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With the development of semiconductor technology, microprocessors become more and more susceptible to transient faults. Some proposed schemes support redundant execution of a program in a superscalar processor for fau...
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An efficient multiscale approach for segmentation of the synthetic aperture radar images is presented based on combining the multiscale feature of SAR image with the self-organizing feature map (SOFM) network. Firstly...
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An efficient multiscale approach for segmentation of the synthetic aperture radar images is presented based on combining the multiscale feature of SAR image with the self-organizing feature map (SOFM) network. Firstly, we employ multiscale autoregressive model for extracting the feature of SAR image, which is the input of the network. Secondly, SOFM networks are trained and applied to SAR image segmentation by using the algorithm we have proposed. Experiments of SAR image segmentation are shown to validate the procedure.
A valid multiscale unsupervised segmentation of synthetic aperture radar (SAR) imagery is proposed by combining Expectation Maximization with the genetic algorithm (GA). The mixture multiscale stochastic model is intr...
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A valid multiscale unsupervised segmentation of synthetic aperture radar (SAR) imagery is proposed by combining Expectation Maximization with the genetic algorithm (GA). The mixture multiscale stochastic model is introduced to characterize and exploit the scale-to-scale statistical variations and statistical variations in same scale in SAR imagery due to radar speckle, and segmentation method is given by combining the GA algorithm with EM algorithm. The algorithm is capable of selecting the number of components of the model by using the minimum description length criterion. Our approach benefits from the properties of Genetic algorithms and the EM algorithm by combination of both into a single procedure. The experiments on the SAR images show that the proposed method outperforms the EM method.
Allocation order is the best for locality, which slide mark compact algorithm is based on. But traditional design made the algorithm's overhead too large. We proposed a fast slide mark compact algorithm, which red...
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Allocation order is the best for locality, which slide mark compact algorithm is based on. But traditional design made the algorithm's overhead too large. We proposed a fast slide mark compact algorithm, which reduces the overhead by mark bit table, live block pool and offset table. The results show that it achieves up to 8.9% speedup in industry-standard benchmark SPEC JVM98 on the Pentium 4, 11% improvement in dtlb miss numbers and 13.6% reduce with L2 cache miss numbers.
The characteristics of advanced integrated circuit technologies require architects to look for new ways to utilize large numbers of gates and mitigate the effects of high interconnect delays. Chip multiprocessors (CMP...
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The characteristics of advanced integrated circuit technologies require architects to look for new ways to utilize large numbers of gates and mitigate the effects of high interconnect delays. Chip multiprocessors (CMPs) exploit increasing transistor counts by placing multiple processors on a single die. As the chip multiprocessors (CMPs) have become the trend of high performance microprocessors, the target workloads become more and more diversified. Due to the wire delay problem and diversity of applications, neither private nor shared caches can provide both large capacity and fast access in CMPs. A novel CMP cache design, the heterogeneous CMP cache (HCC) is presented, in which chips are constructed by tiles of two different categories. L2 caches of private tiles provide lowest hit latency and L2 cache of shared tiles increases the effective cache capacity for shared data. Incorporating indirect-index cache technology to share capacity between different hierarchies, HCC provide a both capacity-effective and access-fast on-chip memory subsystem. Detailed full-system simulations are used to analyze the HCC performance for various programs, including SPEC CPU2000, SPLASH2 and commercial workloads. The result shows that HCC improves performance by 16% for single-threaded benchmarks and 9% for multi-thread benchmarks. HCC is easy to implement and the design ideas will be used in the future multi-core processors of Godson series.
In this paper, we highlight the use of multimedia technology in generating intrinsic summaries of tourism related information. The system utilizes an automated process to gather, filter and classify information on var...
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ISBN:
(纸本)9781605580852
In this paper, we highlight the use of multimedia technology in generating intrinsic summaries of tourism related information. The system utilizes an automated process to gather, filter and classify information on various tourist spots on the Web. The end result present to the user is a personalized multimedia summary generated with respect to users queries filled with text, image, video and real-time news made retrievable for mobile devices. Preliminary experiments demonstrate the superiority of our presentation scheme to traditional methods.
This paper proposes a new pose estimation method based on the appearance of 2D head image. First, the 1D Gabor filters are used to extract the features on the raw images. Compared with the traditional 2D Gabor represe...
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CAM is widely used in microprocessors and SOC TLB modules. It gives great advantage for software development. And TLB operations become bottleneck of the microprocessor performance. The test cost of normal BIST approa...
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An equivalence verification algorithm of sequential circuits [1] based on state transfer graph (STG) is presented in this paper, which obtains some certain useful information through verifying the corresponding state ...
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