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medicalcengshu
- :根据小波低频子带图像的轮廓模糊度和高频子带图像的细节信息量随小波分解层数增多而增多的规律,从图像熵 出发,提出了一种基于低频子带图像熵差的最佳小波分解层数选择法, 该方法通过计算不同分解层数下各低频子带的图像 熵差,选择最接近原始图像熵差的分解层数作为最佳分解层数。用多种基于小波变换的图像融合法分别对两组医学图像进 行仿真实验,结果表明根据该分解层数选择法得到的融合图像目视效果最好,与相关系数、峰值信噪比、模糊Chebyshev 距离 值等客观评价指标保持了很好的一致性。
apen
- 利用matlab进行计算机编程,计算熵值以及熵值标准偏差-Computer programming using matlab to calculate the entropy and entropy standard deviation
Sample-Entropy-VB
- 样本熵是一种有别于近似熵的不计数自身匹配的统计量,是对于近似熵算法的改进。样本熵与近似熵的物理意义一样,表示非线性动力学系统产生新模式概率的大小,主要用来定量刻画系统的规则度及复杂度。样本熵值越低,序列自我相似性越高,产生新模式的概率越低,时间序列越简单;反之,样本熵值越大,序列自我相似性越低,产生新模式的概率越高,时间序列越复杂。样本熵计算用程序VB6.0语言实现。-Sample entropy is different from the research and development o
yyshang
- 计算给定的传感器加速度信号的一阶香农熵,可改变信号分段数以改变熵值-calculate the signal s Shannon entropy
approx_entropy
- 数据集近似熵值的计算,matlab程序代码,简单方便-Data set approximate entropy calculation matlab program code, simple and convenient
svd
- 水印的嵌入与提取,包括有熵值的计算,块数的选取,对图像的攻击方法-Watermark embedding and extraction, including the calculation of the entropy value, the selection of the number of blocks, the image of attack methods
entropy_calc
- 该程序可以用来计算一幅图像的熵值,常用于对图像的质量进行评价-The program can be used to calculate the entropy of an image value, commonly used in the quality of the image evaluation
shang
- 此段程序为matlab程序,用熵值法计算城市化综合指数-shang method to calculate urbanization composite index
matlab
- 判断序列是否为混沌序列的kolmogorov熵值和李雅普诺夫指数计算-Determine whether a sequence is the Kolmogorov entropy of chaotic sequence and calculation of Lyapunov exponent
APEN
- 近似熵是一种衡量衡量非线性时间序列复杂性的非线性动力学分析方法,其物理意义 为熵值越大,时间序列的自我相似性越低,序 列越复杂,反之序列自我相似性越高;并且样 本熵对于序列长度依赖弱,仅需较短的数据就 能够得到稳健的熵值,同时其计算不需对数据 粗粒化,具有较好的抗干扰能力-Approximate entropy is a measure to measure the complex nonlinear dynamics of nonlinear time serie
qiyizhi
- 对加噪信号进行奇异值分解。对奇异值计算其熵特征-Plus noise signal on the singular value decomposition. Calculate the entropy for the singular value feature
sige
- matlab图像处理中,双图像的总体属性参数灰度均值 总熵值 方差计算代码-matlab image processing, the dual image of the overall total entropy attribute parameter mean gray value variance calculation code
jiaochashang
- 用于计算图像的交叉熵熵值的matlab源代码,方便修改-Cross entropy
GrayGradinet
- 基于灰度共生矩阵计算熵值、相关性、能量、对比度-Calculate four directions on the GLCM, as well as angular second moment, entropy, contrast, uniformity
Sample-entropy-calculation
- 计算样本熵值程序,可实现故障信号特征提取,复杂度-Sample entropy calculation procedure can achieve signal feature extraction
Calculate-entropy
- 本程序主要计算一维数据序列的熵值,主要对数据序列进行数据分析-The program is mainly calculate entropy for one-dimensional data series
Entropy
- 计算一幅图像的图像熵,用一个固定模板大小计算图像中每个点的熵值。 -An image of image entropy calculation, with a fixed template size calculation of the image entropy value of each point.
Entropy
- 这个源代码是计算图像的熵值以及绘制多条曲线的方法,已经实现过。-This source code is to calculate the entropy of the image as well as a number of methods to draw curves, have been implemented.
shangzhifa
- 熵值法确定权重,首先将原始矩阵归一化,确定指标权重值计算综合评价值-Entropy method to determine the weights of the original matrix is first normalized to determine the value of the index weight is calculated evaluation value
MinEntropy
- 首先在0~180度方向上投影,计算每个角度上的投影图像的熵值,最小熵值对应的角度即为图像的光照无关角,然后获取图像的光照无关投影图像-光照无关图。-First, from 0 to 180 degrees in the direction of the projection, calculate the entropy of the projected image on every angle, the angle corresponding to the minimum entropy val