b51dbba1ddf12

Region fucion homogenity creterea

基于 DCT(离散余弦变换 )域的信息隐藏算法是目前应用最广的变换域算法 ,此类算法的最大不足是嵌信息量小。通过分析 DCT域隐藏算法隐藏容量少的原因 ,提出了一种大容量的 DCT域信息隐藏算法。算法首先对载体图像进行频谱均匀化处理 ,然后对图像进行全局 DCT变换 ,并将隐藏信息嵌入到载体图像的低频 DCT系数上 ,信息嵌入采用分段量化的方法实现 ,提取隐藏信息时不需要原始载体图像。实验结果表明 ,该算法的嵌入容量大 ,不可感知性好。(Based on DCT (discrete cosine transform) domain information hiding algorithm is the most widely used transform domain algorithms, the largest of these algorithms is the lack of a small amount of information embedded. Hiding Algorithm for DCT domain by analyzing the hidden reasons for the low capacity, a large capacity of information hiding algorithm for DCT domain. Firstly, the spectrum of the carrier image homogenization, and then the image is a global DCT transformation, and hidden information embedded into the image of the low-frequency DCT coefficients, the information embedded in the methods used to achieve sub-quantization, extract hidden information without the original Vector image. Experimental results show that the algorithm embedding capacity, can not be perceived good.)

大地测量中的坐标转换，高斯正算，matlab代码(Geodetic coordinate conversion, Gaussian positive operator, matlab code)

我是做石油采油工艺的，我上传的程序是关于采油机计算泵功图，气体影响下的泵功图计算，上下冲程数据的提取等一系列程序，真心希望在这个论坛里交流学习~~(I do the oil extraction process, I uploaded the program is about oil extraction machine calculated pump power, pump gas under the influence of dynamometer calculation, the up and down stroke data extraction, a series of procedures, sincerely hope that the exchange of learning in this forum ~ ~)

说明：  MATLAB应用于自适应信号处理，能够提高信号处理的应用能力(MATLAB used in adaptive signal processing, to improve the signal processing capabilities)

根据 DVB-T 欧洲标准写的一个OFDM matlab 仿真，其中包括发射器和接收器。文章中有matlab程式的详细介绍，有仿真方框图，还有每步的实验结果分析，特别适合OFDM的初学者。算是OFDM比较简单的一个入门介绍。英文也比较浅显，可读性很强(According to the European DVB-T standard to write a OFDM matlab simulation, which comprises a transmitter and a receiver. Article has a matlab program in detail, there is a block diagram of the simulation, as well as analysis of the experimental results of each step, especially for OFDM for beginners. OFDM considered a relatively simple introduction to. English is also relatively simple, readable)

针对灰色预测的良好算法，这里边对灰色预测的整个过程进行了matlab的求解，全面可靠。(For the good gray prediction algorithm, where the edge of the whole process of the gray forecast matlab solving, comprehensive and reliable.)

实现在matlab环境下的直线检测，效果很好(Straight line detection, with good results achieved in the matlab environment)

单神经元PID的matlab的仿真程序，这是从一本书上得来的。(Single neuron PID of matlab simulation program, which is from a book comes from.)

基于matlab的4PAM调制解调程序，并对其误码率进行仿真分析。(4 PAM modulation demodulation program based on matlab, and simulation analysis was made on the bit error rate.)