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基于特征显著值归一化与位置加权的FT算法
显著性检测 特征显著性 位置加权 归一化
2016/2/9
频率调谐（FT）显著区域检测算法在背景复杂和图像显著区域比较大时检测效果不理想。针对上述问题，对FT算法进行了改进，提出了一种基于特征显著值归一化与位置加权的频率调谐显著区域检测算法（FTFP）。该算法主要在FT算法的基础上进行了图像分块、Lab颜色特征显著值的分别归一化和位置加权处理。实验结果表明，FTFP算法在显著性检测视觉效果、准确率与查全率、对噪声图像的检测上都优于FT算法，综合性能突出。
鉴于光寻址电位传感器（LAPS）的响应信号较弱，传统的抽取频域基波分量的方法易受信号漂移和随机噪声的影响，提出了一种基于频域分量均方根和卡尔曼滤波的两步信号处理方法。基于光寻址电位传感器件的理论模型构建了其等效电路模型，推导得到输出信号的表达式，分析了漂移与噪声产生的原因及其抑制方法。通过实验检测了不同pH值的溶液，并采集了系统输出的光电流信号。求取信号傅里叶变换后频域中的基波分量、二次谐波分量、...
针对全捷联图像导引头中传感器刻度尺误差与动力学偏差引起的隔离度问题，阐述了隔离度寄生回路产生的机理，并提出在线辨识探测器及角速率陀螺刻度尺系数与补偿导引头动力学延迟的隔离度抑制方案。建立导引头“数字平台”的等效模型，基于无迹卡尔曼滤波算法（UKF），对传感器刻度尺系数以及真实弹目视线角速率进行辨识；运用匹配滤波器补偿导引头探测器动力学滞后。最后进行数学仿真，从稳定弹体飞行姿态与提升制导精度两个方面...
本文以评价各省区市推进“大众创业、万众创新”的基础及潜力为目标，在梳理8个国际创业创新评估指标体系的基础上，构建了“中国双创活跃程度评估指标体系”，从双创活力、双创信心、双创环境3方面测度双创活跃程度。依托基于统计数据、调查数据和大数据构建的数据库，对27个省区市2015年上半年的双创活跃程度进行比较分析。研究发现，北京、江苏、广东、浙江和上海的双创活跃程度较高，华东地区和华北地区的双创活跃程度相...
某地区地形地貌复杂,无人机为了更好的规避障碍,实时监测无人机的高度非常重要。提出了一种基于信息融合的高精度容错高度测量系统,该系统利用GPS、气压高度计和IMU三种传感器的冗余与信息融合的方法进行高度的测量,对这三种传感器的原理和模型进行分析,研究基于联邦滤波器的高度信息融合方法,在此基础上,深入探讨这三种传感器的信息预测和融合过程,并进行了高度测量系统的仿真,仿真结果表明：高度测量系统设计合理,...
On Revenue Maximization for Selling Multiple Independently Distributed Items
Revenue Maximization Selling Multiple Independently Distributed Items
2016/1/23
Consider the revenue-maximizing problem in which a single seller wants to sell k different items to a single buyer, who has indepen-dently distributed values for the items with additive valuation. The...
Improving the orientation-dependent statistical potential using a reference state
energy function orientation-dependent statistical potential
2016/1/22
Improving the orientation-dependent statistical potential using a reference state.
Local Sequence Based Rendezvous Algorithms for Cognitive Radio Networks
Rendezvous Time to Rendezvous Local Se- quence
2016/1/22
Rendezvous process plays an important role in constructing Cognitive Radio Networks (CRNs), through which a user establishes a link on a common licensed channel for communication with its neighbors.
Fully Distributed Algorithms for Blind Rendezvous in Cognitive Radio Networks
Fully Distributed Algorithms Blind Rendezvous Cognitive Radio Networks
2016/1/22
Rendezvous process is the cornerstone to construct Cogni-tive Radio Networks (CRNs), through which a secondary user can establish a link for communication with its neigh-bor on a common channel. Altho...
Given a set P of n uncertain points on the real line, each rep-resented by its one-dimensional probability density function, we consider the problem of building data structures on P to answer range qu...
A Fully Polynomial Approximation Scheme for Approximating a Sum of Random Variables
Threshold probability Tail probability Approximate counting Counting knapsack FPTAS
2016/1/22
Given n independent integer-valued random variables X 1 , X 2 ,..., X n and an integer C, we study the fundamental problem of computing the probability that the sum X = X 1 + X 2 +···+ X n is at most ...
High Fidelity Quantum State Transfer In Electromechanical System with Intermediate Coupling
High Fidelity Quantum State Transfer Electromechanical System Intermediate Coupling
2016/1/22
Hybrid quantum systems usually consist of two or more subsystems, which may take the advantages of the different systems. Recently, the hybrid system consisting of circuit electromechanical subsystems...
Experimental Realization of Universal Geometric Quantum Gates with Solid-state Spins
Universal Geometric Quantum Gates Solid-state Spins
2016/1/22
Experimentalrealizationofauniversalsetofquantumlogicgatesis thecentralrequirementfortheimplementationofaquantumcom-puter.Inan‘all geometric’approachtoquantumcomputation 1,2 ,the quantum gates are impl...
Stability is a central concept in exchange-based mechanism design. It imposes a fundamental requirement that no subset of agents could beneficially deviate from the outcome pre-scribed by the mechanis...
Quantum Benchmarks for Pure Single-Mode Gaussian States
Quantum Benchmarks Pure Single-Mode Gaussian States
2016/1/22
Teleportation and storage of continuous variable states of light and atoms are essential building blocks for the realization of large-scale quantum networks. Rigorous validation of these implementatio...