英德
有道
百度
谷歌
图片
维基
百科
拉普拉斯系数
[数] Laplace coefficient
- 提出一种用拉普拉斯图的谱系数夹角谱特征来描述图像几何结构的方法，同时研究了基于图的谱聚类系统。
A geometric structure representation of images based on the angle between spectral coefficient vectors of Laplacian graph was proposed. Graph clustering of spectral features was also investigated. - 为提高编码效率，通过分析残差系数在空域和DCT域均符合拉普拉斯分布后，提出一种快速DCT算法。
To improve encoding efficiency, by analyzing the distribution of residual coefficients in spatial-domain and DCT-do-main, the coefficients accord with a Laplacian distribution with zero mean. - 基于图像离散余弦变换（DCT）交流系数的拉普拉斯分布模型，提出了一种盲提取数字图像信息隐藏算法。
The AC coefficients of an image's Discrete Cosine Transform(DCT) are best approximated by Laplacian distribution model. Based on this model, the blind information hiding algorithm was proposed.
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