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[Software Engineering] A-NOVEL-SKIN-YCBCR-COLOR-SPACE DL : 0: This paper presents a new human skin color model in YCbCr color space and its application to human face detection. Skin colors are modeled by a set of three Gaussian clusters, each of which is characterized by a centroid and a covariance matrix. The centroids and covariance matrices are estimated from large set of training samples after a k-means clustering process. Pixels in a color input image can be classified into skin or nonskin based on the Mahalanobis distances to the three clusters. Efficient post-processing techniques namely noise removal, shape criteria, elliptic curve fitting and faceinonface classification are proposed in order to !inther refine skin segmentation results for the purpose of face detection.
Date : 2025-12-29 Size : 215kb User : 陆
[Software Engineering] k-best-for-rank-deficient DL : 0: 研究无线信道优化问题, 由于非确定性 M MIO系统的信道矩阵行不满秩特性, 导致 MM SE- GDFE左预处理后引入了强干扰, 使得传统 K- Best算法产生了误码平层效应。为了消除误码平层效应,提出部分最大似然和 K - Best结合算法, 并在初始检测的强干扰区域利用部分最大似然算法获得局部最优解, 降低强干扰对系统的影响消除误码平层效应, 进而在局部最优解的基础上利用 K- Best算法完成剩余符号的检测, 保证 M MIO 检测器的软输出特性。仿真结果表明算法消除了传统 K- Best算法中的误码平层效应, 保证了检测的可靠性-Research on wireless channel optimization problem, since non-deterministic channel matrix rows dissatisfaction rank M MIO system characteristics, resulting in MM SE-GDFE left after pretreatment introduced strong interference, the traditional K-Best algorithm to generate the error floor effect. To eliminate the error floor effect, made part of the maximum likelihood and K- Best combination of algorithms and strong interference detection using part of the initial area of the maximum likelihood algorithm to obtain local optima and reduce the impact of strong interference elimination system error leveling effect, and then use K-Best detection algorithm to complete the remaining symbols on the basis of the local optimal solution to ensure that M MIO soft detector output characteristics. Simulation results show that the algorithm eliminates the error floor effect of traditional K-Best algorithm to ensure the reliability of detection
Date : 2025-12-29 Size : 480kb User : 杨佳琳
[Software Engineering] jie_v79 DL : 0: 一个计算声子晶体结构的一维传递矩阵法,基于K均值的PSO聚类算法,真的是一个好程序。- A one-dimensional transfer matrix method to calculate the phonon crystal structure, K-means clustering algorithm based on the PSO, Really is a good program.
Date : 2025-12-29 Size : 6kb User : 胥财