image_retrieval

这是一个非常经典的特征提取算法，matlab写的2DPCA源码(This is a very classical feature extraction algorithm 2DPCA, matlab source code)

说明：  用于医学图像融合CT和MRI灰度图像，MRI和PET的彩色图像融合(For medical image fusion)

There is a BCB program for digital image to establish ground truth image which test the original image.

说明：  图像分割加特征提取的算法，一起分享，共同研究，共同进步(Add feature extraction image segmentation algorithms, along with sharing, joint research, and common progress)

单目标定很好用的程序，对于单目摄像机的一个标定。张正友博士的方法，对于摄像机标定，切记标定板不能用手机拍摄，因为手机拍摄是变焦的(Single objective of the program is very good, for a single camera calibration. Dr. Zhang Zhengyou s method for camera calibration, remember that the camera calibration board can not be used to shoot the phone, because the phone is to shoot a zoom )

this fuction make a roc curve(roc curve)

多幅图像拼接matlab实现 sift特征提取、描述、匹配、RANSAC、仿射变换(Multiple image mosaics, MATLAB, SIFT feature extraction, description, matching, RANSAC, affine transformation)

说明：  matlab 4个图像特征函数代码，包括tamura texture、灰度差分统计特征函数、灰度共生矩阵特征函数、灰度梯度共生矩阵特征函数(Matlab four image feature function codes, including Tamura texture, gray difference statistical feature function, gray co-occurrence matrix feature function, gray gradient co-occurrence matrix feature function)

说明：  用于去除背景，得到原图与背景相减的图像并二值化(boundaries defects and improve the quality of remote sensing images and improve the visual effects))

对于白噪声的功率谱分析给出了白噪声的频谱波形(White noise matlab )