jacobi

real optimization algorithm for any function

Matlab书，毕设论文等关于图像及识别的都可以参考，较有价值(Matlab books, papers, etc. to complete based on the images and can be identified by reference to, the more valuable)

BACKPROJ uses the filtered or unfiltered backprojection algorithm to perform the inverse Radon transform. The filter is designed directly in the frequency domain and then multiplied by the FFT of the projections. The projections are zero-padded to a power of 2 before filtering to prevent spatial domain aliasing and to speed up the FFT.

Short time fourier transform matlab code

 产生长度为1000的标准正太分布的随机信号，画出时域波形及频谱；  采用u=255的非均匀PCM编码，每符号为8bit，画输入-输出关系图；  计算信号量化噪声比（SQNR）；  信道误码率为10-3；  解码，并画出u律反变换后的信号时域波形及频谱。 扩展要求：  采用均匀PCM、量化级数可变、信道误码率可变。 ( have a standard length of 1000 is too random signal distribution, draw time-domain waveform and frequency spectrum  u = 255 using the non-uniform PCM encoding, each symbol for 8bit, drawing input- output relationship diagram  calculated quantization noise signal than (SQNR)  channel bit error rate of 10-3  decoder, and law to draw u the signal after the inverse transform time-domain waveform and frequency spectrum. Expansion of the requirements:  uniform PCM, quantization level variable, a variable channel bit error rate.)

本文档可用来学些matlab编程，通过本文档可以快学了解matlab编程的相关内容。(This document can be used to learn some matlab programming, through this document can quickly learn to understand the correlation matlab programming content.)

some classification algorithms

拉普拉斯金字塔在图像融合中有所应用，方法是首先对两个待融合图像求拉普拉斯残差金字塔，然后用模板对每一级残差图像进行融合得到融合后图像的残差金字塔，然后对这个金字塔进行重构就能得到最终的融合图像，图像各尺度细节得到保留。（注：融合时模板一般会先用高斯函数模糊一下） 不过这里不实现融合，只实现拉普拉斯金字塔的建立。 (Laplace pyramid has applications in image fusion method is to first find two images to be fused Laplacian pyramid residuals, and then use the template for every level of residual image obtained after fusion image fusion residuals pyramid, then the pyramid will be able to get the final reconstructed image fusion, image detail is preserved for each scale. (Note: the fusion template will normally use the Gaussian blur it) But here is not to achieve integration, implementation only establish Laplace pyramid.)

光束合成相干仿真器，模拟两个光束在空气中传播并相干，可进行参数设定。(Coherent beam combiner simulator to simulate the propagation and the two coherent light beams in the air, the parameters can be set.)

对不同区域进行断面分析，并让图片生成在一张图上(Cross-section analysis for different areas and let the picture generated a map)