image_filtering

用matlab设计的常用数学公式和计算公式的程序，写在一个WORD文档里(Matlab design with mathematical formula and the formula commonly used procedures, written in a WORD document where)

Appendix MATLAB 程序设计基础附录(Appendix Appendix Design Basis)

说明：  matlab中GM算法的实现，适合于数学建模人员使用(The realization of GM algorithm in MATLAB)

使用原模图法的LDPC进行编译码改进，并展示了改进后误码率以及信噪比的变化(Use protograph LDPC encoding and decoding method to improve and show a change in the error rate as well as the improved signal to noise ratio)

Turbo与LDPC编解码及其应用（肖扬）书中程序(Turbo and LDPC encoding and decoding and application program (Xiao Yang) in the book)

：给出了一种提取特征点的新方法和合理的特征不变量。该方法根据三角不等式原理利用第三边与另 外两边之和的比值大小来确定角点，以特征点和它相邻的两个特征点所形成的两条直线的夹角正切值以及三角形 第三边与另两边和的比值作为特征不变量。这种特征提取的方法简单，并且由于扩大了模板取值范围，使识别效果受特征点漏检的影响较小。实验表明，该方法不仅简便，而且效果良好。(: In this paper, a new feature point extraction method and the characteristics of rational invariants. The method is based on the principle of triangle inequality with the use of the third side and both sides of the ratio of the size to determine the Corner to feature point and its two adjacent feature points formed by the angle between two tangent linear and the third triangle on both sides and edges with another feature of the ratio as a variable. This feature extraction method is simple, and as a result of the expansion of the scope of the template values to identify the effect of feature points by the impact of smaller undetected. Experiments show that the method is not only simple, but effective.)

说明：  一部有关神经网络的matlab的ppt,对初学者挺有帮助的。(One of the neural network matlab ppt, help for beginners winter ridge.)

Companding is essentially a technique for achieving non-uniform quantization. There are basically 2 methods which are most popular in literature.:-A-law companding and u-law companding. These algorithms help in achieving to an extend, compression. The given code shows how to compress a 14-bit code to 8-bit code and its digital implementation using matlab. Please contact by mail if a detailed description of code is needed.

matlab, 对DICOM图像读取，进行阈值运算，改变颜色后输出。(matlab, read DICOM image threshold operation, change colors after output.)

有关于图像分割的一篇重要文献，写得比较清晰，理解容易(graph cut)