zhouchen

image processing via webcam

The geodesy aspects of Matlab source geodesy aspects Matlab source would be helpful

this trains a set of images to calculate metric

有效实行数据分类和图像分割的源码， 非常适合学习实用(image and data segmentation)

说明：   matlab灰色预测的通用算法程序，很好的套用模版(universal algorithm for Matlab gray prediction procedure, apply the template)

说明：  通过并行压缩进行二维信号压缩，提出了一种利用并行压缩传感技术对二维信号进行压缩的新方案。根据这个原理，译码器的重新构造可以并行进行。通过对二维信号进行某些排列，可以确保所有列具有大致相同的密度级别，并且可以使用相同的测量矩阵进行采样。这样可以避免二维信号的矢量化，从而大大减小测量矩阵的尺寸。我们证明，如果排列良好，重建均方误差的上限会更紧。为了说明这一方案，我们将其应用于视频压缩并使用不同帧的排列有两种：参考帧的基于Z字形扫描的排列和非参考帧的基于块测试的排列。仿真结果表明，在相同的压缩比下，峰值信噪比比比在无置换情况下可提高3-7db左右。(we propose a new scheme to compress 2D signals using parallel compressed sensing. According to this seheme, the reeonstruction at the decoder can be performed in parallel. By performing certain permutation on a 2D signal, all columns are insured to have approximately the same density level and can be sampled using the same measurement matrix. In this way, vectorization of a 2D signal can be avoided, and thus the size of the measurement matrix can be dramatically reduced. We prove that with a good permutation, we can have a tighter upper bound on reconstruction mean square error. To illustrate this scheme, we apply it to video compression and use two kinds of permutations for different frames: the zigzag-scanbased permutation for reference frames and the block-test-based permutation for non-reference frames. Simulation results show that under the same compression ratio, the peak signal-to-noise ratio can be improved by approximately 3-7 dB compared to the case without permutation.)

离散傅立叶变换法实现瑞利衰落信道 参考文献The Generation of Correlated Rayleigh Random Variates by Inverse Discrete Fourier Transform(The Generation of Correlated Rayleigh Random Variates by Inverse Discrete Fourier Transform)

利用群酉码编码，差分译码的MATLAB仿真程序(Using group unitary coding, differential coding of the MATLAB simulation program)

MatLab Engineering Mathematics about Mathematics and application

基于运动区域和运动区域外截矩形进行运动目标检测的程序(campaign based regional and extra-regional movement closed rectangular exercise target detection procedures)