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segment
extreme learning machine 例子
run segment_mean(extreme learning machine examples run segment_mean)
- 2007-12-16 23:01:43下载
- 积分:1
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distorcion_fase
simulation of the effects of phase distortion in a signal, changing the amount of lag
- 2011-05-24 19:56:03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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tiltcylinder1d
利用重力剖面反演水平圆柱的边界及位置,程序抗干扰能力较差,模型计算加入噪音严重影响结果,但可作为算法参考并加以改进。(Tilt-Depth for gravity profile over horizontal cylinder)
- 2013-09-17 14:36:56下载
- 积分:1
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zuiduanlujiin
遗传算法解决最短路径问题matlab实现(Genetic algorithm to solve the shortest path problem matlab achieve)
- 2013-03-19 15:56:42下载
- 积分:1
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ANewAdvancedGeneticAlgorithmfor
A New Advanced Genetic Algorithm for Optimal unit commitment
- 2010-07-12 01:46:14下载
- 积分:1
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pca
使用MATLAB开发环境,来
实现人脸识别(fase recognition)
- 2009-03-20 10:30:55下载
- 积分:1
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DFT1
DTF - equation implementation(DTF- equation implementation)
- 2009-12-04 16:20:04下载
- 积分:1
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eluosifangkuai-MATLAB
俄罗斯方块的MATLAB版,其中附源代码。(The MATLAB version of Tetris, including the source code attached.)
- 2009-05-18 11:21:42下载
- 积分:1
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CHIRP
基于线性调频信号(chirp)进行TDOA定位的方法,有详细说明,并提出了改进方案。(TDOA location method based on linear FM signal (chirp) is described in detail, and proposed improvement program.)
- 2013-05-17 10:43:31下载
- 积分:1