-
narcissusC
水仙花数的C实现,很不错的,我感觉。希望能对大伙有用,谢谢大家(narcissus)
- 2010-05-13 12:14:29下载
- 积分:1
-
mysusan
Matlab下的SUSAN角点检测算法,数字图象处理(Matlab under SUSAN corner detection algorithm, digital image processing)
- 2007-01-25 15:22:16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
-
Fractal
用matlab实现分形的绘图,可以达到对分形的进一步了接(Using matlab to achieve fractal drawings, fractals can be achieved for a then further)
- 2011-10-01 17:20:27下载
- 积分:1
-
Eigenface
PCA based program for face recognition / classification
- 2014-12-10 15:14:41下载
- 积分:1
-
f_art2
matlab开发的,基于行作用技术的代数迭代算法反演代码。可用于层析成像(matlab developed algebraic algorithms based on the role of technology line inversion code. Can be used for tomographic imaging)
- 2014-02-25 10:52:18下载
- 积分:1
-
twophase
基于流函数法求解流体颗粒二相绕流问题的源码(Stream function method based on particle two-phase fluid flow around the issue of source)
- 2008-01-19 10:16:47下载
- 积分:1
-
kmeans
kmeans算法的描述,源代码实现,matlab上 的程序(kmeans)
- 2009-04-30 17:04:09下载
- 积分:1
-
bpsk
bpsk modulation in matlab. i hope it will be useful for you.
- 2012-07-02 21:37:20下载
- 积分:1
-
Chen-system-and-its-chatic--
研究Chen系统的混沌运动,通过理论分析与数值计算分析系统基本动力学性质,并通过系统相图、全局分
岔图与Lyapunov指数图分析该Chen混沌系统动力学行为.(Chen chaotic motion of the system, through theoretical analysis and numerical calculation and analysis system of basic dynamic properties and phase diagram of the system, the global bifurcation diagram and Lyapunov exponent analysis of the Chen chaotic system dynamics.)
- 2011-11-17 19:37:06下载
- 积分:1