-
Rgb2luv
色彩空间转换的matlab代码，实现从RGB空间到LUV的转换(color space conversion Matlab code, from the realization of the luminance RGB space conversion)
- 2007-04-28 17:18:31下载
- 积分：1
-
2010101261572177
matlab soft for ECG analysis
- 2011-01-21 10:39:38下载
- 积分：1
-
sift
1 SIFT 发展历程
SIFT算法由D.G.Lowe 1999年提出，2004年完善总结。后来Y.Ke将其描述子部分用PCA代替直方图的方式，对其进行改进。
2 SIFT 主要思想
SIFT算法是一种提取局部特征的算法，在尺度空间寻找极值点，提取位置，尺度，旋转不变量。
3 SIFT算法的主要特点：
a) SIFT特征是图像的局部特征，其对旋转、尺度缩放、亮度变化保持不变性，对视角变化、仿射变换、噪声也保持一定程度的稳定性。
b) 独特性(Distinctiveness)好，信息量丰富，适用于在海量特征数据库中进行快速、准确的匹配[23]。
c) 多量性，即使少数的几个物体也可以产生大量SIFT特征向量。
d) 高速性，经优化的SIFT匹配算法甚至可以达到实时的要求。
e) 可扩展性，可以很方便的与其他形式的特征向量进行联合。
4 SIFT算法步骤：
1） 检测尺度空间极值点
2） 精确定位极值点
3） 为每个关键点指定方向参数
4） 关键点描述子的生成
本包内容为sift算法matlab源码(1 SIFT course of development
SIFT algorithm by DGLowe in 1999, the perfect summary of 2004. Later Y.Ke its description of the sub-part of the histogram with PCA instead of its improvement.
2 the SIFT main idea
The SIFT algorithm is an algorithm to extract local features in scale space to find the extreme point of the extraction location, scale, rotation invariant.
3 the main features of the SIFT algorithm:
a) SIFT feature is the local characteristics of the image, zoom, rotate, scale, brightness change to maintain invariance, the perspective changes, affine transformation, the noise also maintain a certain degree of stability.
b) unique (Distinctiveness), informative, and mass characteristics database for fast, accurate matching [23].
c) large amounts, even if a handful of objects can also produce a large number of SIFT feature vectors.
d) high-speed and optimized SIFT matching algorithm can even achieve real-time requirements.
e) The scalability can be very convenient fe)
- 2012-05-25 15:31:16下载
- 积分：1
-
chebyshev
chebyshev模拟低通滤波器matlab源码(chebyshev analog low-pass filter design (matlab source code))
- 2009-04-07 12:23:50下载
- 积分：1
-
LPP
Locality Preserving Projections(LPP),局部保留投影，可以找出高维空间中的数据在低维空间中的投影，并保留了数据之间的相关性(Locality Preserving Projections (LPP), partial retention projection, you can find the data in high-dimensional space in a low dimensional space projection, and retains the correlation between data)
- 2013-08-09 11:30:30下载
- 积分：1
-
weightpositioncalculation
通过移动机翼，尾翼，起落架和油箱的位置来使气动中心和重心重合。(By movingwings, tail, landing gearand fuel tankpositionto makethe aerodynamic centerand center of gravitycoincide.)
- 2013-12-22 19:00:34下载
- 积分：1
-
matlabbook
word版的matlab教程，能够支持在线的命令及参数的查询(word version of matlab tutorials, can support online orders and parameters of the query)
- 2007-10-04 16:03:45下载
- 积分：1
-
seismicwavetospectrum
将地震波转换成反应谱的程序。。。。。。。。。。。(seismic wave to spectrum..........)
- 2009-05-23 15:31:59下载
- 积分：1
-
B09025
communication system is expected to increase the service, the quality improvement and also the capacity, using spread spectrum communication system is one of the method to fulfill that demand. This quality and capacity factor will depend on the number of user. In order to see the performance of the Wiener Filter on the MC-CDMA system, simulation method is used by increasing the Direct Sequence Spread Spectrum CDMA signal, with digital modulation QPSK
- 2010-06-03 04:19:33下载
- 积分：1
-
efficient-codec-design
efficient codec design project
- 2012-05-05 15:03:02下载
- 积分：1
