-
Pccard
通过PCCARD SPEC测试笔记本的外部接口的电压是正常(through PCCARD SPEC test notebook external interface voltage is normal)
- 2007-03-05 17:08:36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
-
Wavelet-Denoise
对仿真信号进行小波分解,进行小波阈值降噪处理(Wavelet Denoise)
- 2013-12-27 09:57:58下载
- 积分:1
-
Classical_linear_programming_MATLAB_programming_tu
MATLAB程序设计线性规划经典教程Classical linear programming MATLAB programming tutorial(Classical linear programming MATLAB programming tutorial Classical linear programming MATLAB programming tutorial)
- 2010-08-02 13:56:37下载
- 积分:1
-
GUI_rar
matlab的GUI开发,对于matlab学习非常有用!(GUI development of matlab)
- 2009-04-02 12:39:19下载
- 积分:1
-
direct-linear-convolution
direct linear convolution for digital signal processing
- 2012-04-06 21:12:29下载
- 积分:1
-
tree
绘分形树:tree(n,a,b),n为分形树迭代次数
a,b为分枝与竖直方向夹角
(Painted fractal tree)
- 2013-12-16 00:53:53下载
- 积分:1
-
channelequal
非常详细的自适应信道均衡程序,设计了一种用于通信信道的自适应均衡器,提供了两种均衡方法,并进行了比较。(Very detailed adaptive channel equalization process, an adaptive equalizer for a communication channel, the two equalization method, and compared.)
- 2014-01-01 12:33:11下载
- 积分:1
-
lms
这是一个自编的最小均方误差的自适应滤波器的程序(This is a self of the minimum mean square error of the adaptive filter procedures)
- 2010-09-23 17:13:36下载
- 积分:1
-
QAM-modulation
通讯类matlab文件,包括简单的QAM调制,星座图的产生等的一些基本程序(Communications matlab files, including simple QAM modulation, such as the generation of FIG want some basic procedures)
- 2014-10-31 14:18:24下载
- 积分:1