ID 原文 译文
24315 针对传统多阈值 Otsu 方法在寻找最佳阈值过程中穷举计算效率低的问题，该文分析了多阈值 Otsu 的阈值性质，证明了使用 Otsu 方法找到的一组最佳阈值与分割出的各类均值之间的数学对应关系。 To resolve the problem of low efficiency which traditional multi-threshold Otsu existing in searching of optimal thresholds on the brute-force method, the thresholds properties of multi-threshold Otsu are analyzed, and the mathematical correspondence is proved between a set of optimal thresholds and the means of various categories.
24316 根据多阈值 Otsu的阈值性质，该文提出一个新算法用来快速计算所需最佳阈值，建立了一种新的阈值搜索模型。 A new algorithm is proposed to calculate the optimal thresholds and a new model of searching thresholds is also built according to the properties of thresholds of multi-threshold Otsu.
24317 该算法搜寻满足Otsu 多阈值与以此阈值分割出的各类均值之间关系的一组最优阈值，从而确定符合 Otsu 准则的最佳阈值。 The algorithm searches for a set of optimal thresholds that satisfy the correspondence between the thresholds and the means of various categories segmented by them, so the optimal thresholds of Otsu can be determined.
24318 该算法有效减少了阈值搜索范围，并且在均值、方差等计算上引入了查找表，优化了底层运算。 The algorithm reduces the search range effectively and optimizes the calculation of means and variances using lookup table.
24319 实验结果表明，与传统多阈值 Otsu 方法相比，该算法的分割速度大幅度提高，相比于其他多阈值 Otsu 快速算法，不仅在计算速度上有所提升，而且得到的最佳阈值克服了随机性和偶然性的缺点，是严格符合 Otsu 原则的。 Experimental results show that the segmentation speed of the algorithm is greatly improved compared with the traditional multi-threshold Otsu method, and the algorithm can not only improve the computation speed, but also overcome the shortcomings of randomness and contingency of thresholds compared with other fast multi-threshold Otsu algorithm, and the results are strictly in line with the principle of multi-threshold Otsu.
24320 该文针对成对用户大规模MIMO中继系统，研究了最优能效准则下的系统参数设计。 The optimal system design based on maximizing the Energy Efficiency (EE) is investigated for the multi- pair massive Multiple-Input Multiple-Output (MIMO) relaying system.
24321 在中继采用最大比合并/最大比发射(MRC/MRT)预编码方案下，借助于大数定律，推导出能效函数关于用户发射功率、中继发射功率和中继天线数的解析表达式。 By virtue of the law of large numbers, an analytical expression of the involved EE function is derived with respect to the transmit power at the users and the relay, and the antenna number of the relay, when the Maximum Ratio Combining Maximum Ratio Transmission (MRC/MRT) precoding is adopted at the relay.
24322 根据能效函数性质，分别证明了全局最优发射向量和最优天线数的存在性和唯一性。 The existences of a unique globally optimal transmit power vector and a unique globally optimal antenna number at relay are demonstrated separately by exploring the properties of the EE function.
24323 为了求解最优发射功率，利用分数规划，将原优化问题转换为等价的减法形式，进而提出一种新的低复杂度迭代优化算法，并求得最优发射功率的闭合解。 In order to obtain the optimal transmit power vector, the original fractional optimization problem is first transformed into an equivalent subtractive form by using the properties of fractional programming. Then, a low-complexity iterative algorithm is developed and the closed-form solution is deduced.
24324 对于最优天线数，则利用Lambert W函数，得到了能效最大时的最优天线数闭合解。 Regarding the optimal number of relay antennas, a closed-form solution is also achieved by use of the Lambert W function.