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Description: this file written by C++ can read pgm file.
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Size: 2048 |
Author: 王秋慎 |
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Description: Ｃ＋＋解线性方程组
复系数方程组的全选主元高斯消去法-C++ solution of linear equations of complex equations of the entire election PCA Gaussian Elimination
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Size: 6144 |
Author: 张宁 |
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Description: visual c++编写，图像主分量融合,应用加权图像融合算法-visual c preparation, image PCA integration, application-weighted image fusion algorithm
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Size: 311296 |
Author: mikle |
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Description: pca sift，比SIFT速度快，匹配精度高，-pca sift, faster than the sciences, matching high precision,
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Size: 683008 |
Author: sun shu |
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Description: pCA的ppt报告，PCA理论，该理论可用于降维处理，将高维数据变化 为低维数据。-ppt Report of the PCA, PCA theory, the theory can be used to deal with dimensionality reduction, high dimensional data will change for the low-dimensional data.
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Size: 2759680 |
Author: 郭继东 |
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Description: PCA算法Matlab实例，有详细的中文注释-PCA algorithm Matlab examples detailed Chinese Notes
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Size: 1024 |
Author: 王一 |
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Description: 用Vc++实现的人脸识别Demo程序。Adaboost实现人脸检测，PCA特征提取。-With Vc++ Realize Face Recognition Demo program. Realize Adaboost face detection, PCA feature extraction.
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Size: 187392 |
Author: 舟子还 |
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Description: PCA-SIFT实现图像的不变性特征提取,利用主元分析提取SIFT特征,提高了效率.-PCA-SIFT invariant image feature extraction, using principal component analysis extracted SIFT features, improved efficiency.
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Size: 680960 |
Author: 路香群 |
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Description: SIFT算法、SURF算法和PCA—SIFT算法的实例，里面要安装OPENCV才能用的-SIFT algorithm, SURF algorithm and PCA-SIFT algorithm instance, which can be used to install OPENCV
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Size: 1756160 |
Author: 宋丹 |
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Description: pca-sift算法的实现，采用vc2008开发环境，进行开发，独立运行-pca-sift algorithm, using vc2008 development environment to develop, operate independently
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Size: 1269760 |
Author: jason li |
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Description: Using C + + language of the PCA-SIFT algorithm, can be used for visual odometer feature extraction and matching results with good match
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Size: 61440 |
Author: jason li |
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Description: 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
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Size: 2831360 |
Author: 李青彦 |
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Description: 主成分分析，提取图像中的SIFT特征点，用于图像识别和分类(Principal component analysis (PCA), extracting SIFT feature points in images for image recognition and classification)
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Size: 757760 |
Author: wangheng144 |
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