content-based-image-retrieval

高斯核支持向量数据描述（SVDD）方法的源代码 (the code of gauss kernel support vector data description)

令x(n)=5exp(j*0.15*n*n)+6exp(j*300n-j*0.15*n*n) ，w(n)为高斯窗函数。试用matlab软件，取不同长度的窗函数，分别求x(n)离散短时傅里叶变换，并进行信号重构。(ORDER x (n) = 5exp (j* 0.15* n* n)+6exp (j* 300n-j* 0.15* n* n), w (n) for the Gaussian window function. Trial Matlab software, take different lengths of the window function x (n), respectively, seek to discrete short-time Fourier transform, and to reconstruct the signal.)

说明：  这个源程序的主要功能是实现图像基于拉普拉斯金字塔的图像融合(The primary function of the source image is Laplacian pyramid-based image fusion)

对图像进行转换，RGB转HSV、HSV转RGB以及色调偏移(Image conversion, RGB to HSV, HSV to RGB and hue offset)

Graphics PresentationsMandelbrot Set Function,

指纹识别中的指纹图像预处理程序，包括有归一化，二值化，图像分割，图像增强，图像细化(Fingerprint identification fingerprint image preprocessing procedures, including normalization, binarization, image segmentation, image enhancement, image thinning)

Matlab在一个图形上添加多个colormap(Matlab adds multiple colormap on a graph)

说明：  识别指纹端点分叉点以及奇异点，其中还包括指纹方向场和指纹梯度场的计算(It also includes the calculation of fingerprint direction field and fingerprint gradient field)

此算法为基于k-means聚类的非局部均值快速去噪算法，方法便捷有效，可保持边缘信息(this is a fast edge-preserving denoising method based on non-local means method with k-means clustering)

低信噪比下红外弱小目标的检测与跟踪，采用的是基于粒子滤波检测前跟踪算法。(Low SNR infrared small target detection and tracking using front tracking algorithm based on particle filter detection.)