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jiaotongdeng
分东西和南北两个路口模拟交通三色信号灯的亮灭控制(East and West and North-South two intersection points simulated three-color traffic signal control of bright eliminate)
- 2009-12-18 11:34:04下载
- 积分:1
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Fractal-image-coding
说明: 描述分形编码和解码原理的非常好的一份电子文档,对实验结果也进行了详细的分析(Describe the principles of fractal coding and decoding an electronic document very well the experimental results carried out a detailed analysis of)
- 2011-03-28 16:40:47下载
- 积分:1
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BPSO
一种改进的粒子群算法,有效进行最值寻优,实测可行。(a improved PSO algorithn)
- 2020-10-07 17:27:36下载
- 积分:1
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matlab
有关matlab的一些文章,希望对大家有帮助(Some of the matlab article, we want to help)
- 2010-06-22 10:37:27下载
- 积分:1
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Equalizer
说明: 均衡器,8段滤波器调节。可以显示频谱图,各参数皆可调节(Equalizer, 8 filter adjustment. Can display the spectrum, adjusting the parameters Jieke)
- 2010-03-31 16:55:33下载
- 积分:1
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mss32
最近在看hl2,发现mdl模型必须从36转到37,哈哈,恰好看到此贴,非常感谢。(recently watching hl2, mdl model must be found from 36 to 37, haha, just to see patch. Thank you very much.)
- 2007-02-03 22:38:59下载
- 积分:1
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fangzhen
一类非线性的不确定性系统的自适应鲁棒控制,(adaptive robust control for a class of uncertain nonlinear system)
- 2015-05-21 13:51:43下载
- 积分:1
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facerecognition
该matlab程序可以根据所选择的测试库中图片对人脸进行识别,从而在系统中找到与之匹配的图片。(The matlab program can test the library, the selected image on the human face recognition, which is found in the system to match the pictures.)
- 2010-12-09 20:58:26下载
- 积分:1
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danxiang
单相并网逆变器仿真,采用下垂控制算法,还能分析谐波含量(Single-phase grid-connected inverter simulation, using the droop control algorithm can analyze the harmonic content)
- 2016-03-26 09:16:16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