-
lmssuanfaxianbo5bingxing
自适应并行陷波器,采用了陷波器的并行结构(adaptive lms)
- 2009-03-06 20:33:40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
-
LBP-VLBP-and-LBP-TOP
Spatio-temporal LBP VLBP and LBP-TOP
- 2011-10-25 16:31:41下载
- 积分:1
-
Energy-Detection-Algorithm
针对目前双门限能量检测中存在的当判决统计量落在两门限之间时,需循环检测的问题,本文将介绍一种基于自适应双门限的能量检测算法。(we analyze and compare several main types of threshold in energy detection, then propose a new energy detection algorithm based on adaptive double threshold. )
- 2016-11-21 23:27:13下载
- 积分:1
-
matlabppt
这是我在培训机构内部的MATLAB资料,很有参考价值(This is my training institutions within the MATLAB data of great reference value)
- 2009-11-04 19:39:18下载
- 积分:1
-
calibration_matlab
说明: 一个可以根据标定点来对摄像机进行内外参数进行计算的程序(According to a standard fixed-point to cameras inside and outside the parameters of the calculation procedure)
- 2008-10-28 08:32:54下载
- 积分:1
-
2165415
说明: 小波包去噪,小波包函数调用,小波包用于信号压缩等(Wavelet packet denoising, wavelet packet function call, wavelet packets for signal compression)
- 2010-05-04 11:54:31下载
- 积分:1
-
space-time-mimo
瑞利信道下,stbc22,24,44,wuma仿真,以及通过奇异值分解的44天线的误码仿真,(Rayleigh channel, stbc22, 24,44, wuma simulation, as well as through the singular value decomposition of 44 antennas BER simulation,)
- 2013-09-27 11:03:33下载
- 积分:1
-
equalizer
simulation of voice signal Equalizer
- 2013-10-03 22:45:27下载
- 积分:1
-
FFTandCONV
用matlab编写的线性卷积和FFT,与matlab自带函数功能一样。每行代码都有注释,便于拓扑和扩展(Linear convolution and FFT using matlab matlab own function function. Each line of code is well commented, easy topology and extended)
- 2013-03-22 15:51:19下载
- 积分:1