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jade
jade算法适用于盲源信号的处理分离出有用的信号(jade algorithm for blind source separation of the useful signal processing)
- 2013-10-30 11:03:01下载
- 积分:1
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Retinex
ELSEVIER上关于Retinex图像增强算法的最新文章(ELSEVIER About Retinex image enhancement algorithm on the latest articles)
- 2013-05-24 23:57:54下载
- 积分:1
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RD-0
雷达成像RDA正侧视 matlab 我看的是合成孔径雷达成像算法与实现(digital processing of synthetic aperture radar)
- 2012-04-04 23:56:18下载
- 积分:1
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Lfybus
Newton Raphson load flow y bus formation
- 2011-12-12 20:09:11下载
- 积分:1
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OFDMtransmitterusingmatlab
this matlab code describes OFDM(orthogonal frquency division multiplexing) transmitter
- 2010-10-02 20:21:32下载
- 积分:1
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matlab-image-processing
用matlab对图像进行处理的几个源码,傅立叶变换,重建图像,灰度扩展,多种图像增强,滤波。(using Matlab, the image of several source, Fourier transform, image reconstruction, Gray expansion a variety of image enhancement, filtering.)
- 2007-05-25 13:05:52下载
- 积分:1
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R-Part1
R Programing - Part1
- 2015-02-26 14:03:54下载
- 积分:1
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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
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diancizhang
电磁场与电磁波第四版的答案,比较详细,有用(Electromagnetic field and wave the fourth edition of the answer, more detailed, useful)
- 2014-10-07 16:38:20下载
- 积分:1
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CertPathValidatorTest
Cert Path Validator Test for Andriod.
- 2013-10-21 15:34:11下载
- 积分:1