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zengqiang
数字减影(DSA:Digital Subtract Angiography)是一种传统的血管可视化技术[1]。这一技术用注射造影剂后的活动图像减去注射造影剂前记录的掩模图像来显示不透明的血管。其期望的结果是在减影后的图像上背景结构被完全消除。(estimation based on background)
- 2009-06-06 15:32:56下载
- 积分：1
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lianxuxiaobo
说明： 对连续小波变换进行了matlab仿真，程序完整，进过验证的。(Conducted on the continuous wavelet transform matlab simulation, program integrity, been to verify.)
- 2011-04-16 12:17:40下载
- 积分：1
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DCTlicheng
研究表明，构成K一L变换矩阵的向量也就是ToePhtz矩阵的特征向量。与此同时，离散
余弦变换矩阵逼近于ToePutz矩阵的特征向量矩阵，所以离散余弦变换矩阵与自然图像的
K一L变换矩阵十分相似。经过离散余弦变换后的变换系数块的协方差矩阵Cy非常接近对角
阵，即除了对角线元素以外，其它很多元素都近似为0，并且在左上角集中了主要能量。这
反映了自然图像大部分区域变化不大，亮度突变只占少数，即图像能量以低频成分为主的特
性。通过变换后的量化，舍弃对视觉效果影响较小的次要信息，可达到进一步的压缩效果。
虽然从去相关性能的意义上讲，DCT是一种次于K一L变换的准最佳变换，但是从算法实现的角度来看，DCT则远远优于K一L变换。首先，当图像的分块大小确定后，DCT的变换矩阵也就随之确定了，不随输入信号的统计特性变化而变化 其次，二维DCT能够分解成两次一维DCT，有利于硬件实现。
(Studies have shown that constitute a K L transformation matrix vector is ToePhtz eigenvector of the matrix. At the same time, discrete
The cosine transform matrix approximation in ToePutz matrix eigenvector matrix, so the discrete cosine transform matrix and natural images
Is very similar to a K L transformation matrix. After discrete cosine transform, the transform coefficient block of Cy is very close to the diagonal of covariance matrix
Matrix, namely except diagonal elements, many other elements are approximate to 0, and focused the main energy in the upper left corner. this
Reflects the natural images most area changed little, brightness mutations accounted for only a few, the energy is given priority to with low frequency components of image
Sex. Through quantitative after transformation, abandoning smaller effect on the visual performance of secondary information, can achieve further compression effect.
Although from related to the performance of the sense, DCT is a kind o)
- 2013-11-25 16:00:24下载
- 积分：1
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huamo
永磁同步电机的滑模控制，毕业设计做的，不可多得的好模型(Sliding mode control of permanent magnet synchronous motor, graduation design done, the rare good model)
- 2021-02-16 21:29:47下载
- 积分：1
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TWODOF
侧向和横摆的二自由度车辆模型,输入为方向盘转角，车速，轮路附着系数(2dof vehicle model including lateral and yaw)
- 2020-07-04 00:40:01下载
- 积分：1
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yuanshi
鬼函数成像.研究大气湍流成像.包含一些固定光学参数输入(Ghost function imaging. Study of atmospheric turbulence imaging. Contains some fixed optical parameters for input)
- 2021-03-24 14:59:15下载
- 积分：1
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Three_phase_PV_inverter
基于电网电压定向的矢量控制策略，其中只是电流内环部分。(The vector control strategy based on grid voltage orientation is only the inner current loop.)
- 2019-05-18 12:05:08下载
- 积分：1
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segment
交互式选取生长起始点，将感兴趣部分分割出来。(Select starting point for interactive growth, will be interested in part from it.)
- 2010-08-13 14:50:29下载
- 积分：1
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adaptive-line-enhancer
自适应线谱增强算法通过自适应技术减弱噪声，并增强有用信号的功率谱。(This demonstration illustrates the application of adaptive filters to
signal separation using a structure called an adaptive line enhancer
(ALE). In adaptive line enhancement, a measured signal x(n) contains two
signals, an unknown signal of interest v(n), and a nearly-periodic noise
signal eta(n).
The goal is to remove the noise signal the measured signal to obtain
the signal of interest)
- 2016-07-28 21:02:04下载
- 积分：1
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Partialleast-squaresregression
能够利用偏最小二乘回归模型分析电力系统谐波发射水平，MATLAB编制(Able to take advantage of partial least-squares regression model launch level of power system harmonics, MATLAB preparation)
- 2020-07-31 10:48:37下载
- 积分：1
