B-spline曲线拟合DEM的代码

摘　要 文章以空间监控系统为背景,深入研究了JPEG图像压缩标准的实现方法,并基于FPGA对其进行了实现和优化。文中给出了详细的实现方法和优化过程,测试表明达到了很好的效果。 简单介绍了有损静态图像压缩当前有两种比较流行的标准JPEG和JPEG2000。说明了用JPEG方法压缩的原因。 介绍JPEG基本原理：JPEG对灰度图像的压缩处理过程主要包括:图像分割,离散余弦变换(DCT),量化(Quantization),“Z”形排序(Zigzag Scan),差分脉冲编码调制(Differential Pulse Code Modulation,DPCM)对直流系数(DC),行程长度编码(Run-Length Encoding,RLE)对交流系数(AC),霍夫曼(Huffman)编码等。 JPEG标准的特点是离散余弦变换。 比较详细介绍压缩系统的构成和实现。实现提及步骤， JPEG压缩模块设计和编码模块实现细节。 (Abstract Article in the space monitoring system for the background, in-depth study of the JPEG image compression standard implementation methods and carried out based on FPGA implementation and optimization. In this paper, a detailed method of implementation and optimization of the process, testing showed that to achieve good results. Easy introduction of harmful static image compression has two kinds of comparisons that the current popular standard JPEG and JPEG2000. Illustrated by the reasons for JPEG compression method. JPEG introduce the basic principles: JPEG compression of gray-scale image processing include: image segmentation, discrete cosine transform (DCT), quantization (Quantization), "Z"-shaped sort (Zigzag Scan), differential pulse code modulation (Differential Pulse Code Modulation, DPCM) on the DC coefficient (DC), Run Length Encoding (Run-Length Encoding, RLE) of the exchange coefficient (AC), Hoffman (Huffman) coding. JPEG standard is characterized by discrete )

关于图像处理仿真软件环境下的源程序，毕设中自己用过的，希望对你有用 (On image processing simulation software environment of the source, complete set used in their hope that useful to you)

很好用的matlab源代码，值得作为参考。源代码可以直接拿来应用。(can run smooth)

image retrieval using L2 distance:euclidien distance between 2 histograms

该算法是一种利用otsu阈值原理对输入的彩色或灰度图像进行全自动分割的方法。

基于matlab的UWB仿真，多种调制方式，多种多制方式。有原理图。(Matlab simulation of UWB-based, multi-modulation mode, a variety of multi-format. There are schematics.)

Pattern recognition matlab approach

说明：  MATLAB图像处理工具箱提供了灰度调整函数imadjust()，可以将图像的灰度值调整到一个指定的范围(MATLAB image processing toolbox provides a grayscale adjusting function imadjust (), you can adjust the gray scale image to a specified range)

差分格式中的一种类型，matlab编程实现的，能看到明显效果。(difference format of a type, Matlab programming, and be able to see tangible results.)

果蝇优化算法在pid寻优中的应用，这个方法很好(Drosophila optimization algorithm optimization of pid, this method is very good)