RELAX

This is a JPEG encoding & decoding program of still image. It does not use level shifting. Discrete Cosine transform (DCT) is performed both by classical & Chen s Flowgraph methods. Predefined JPEG quantization array & zigzag order are used here. RUN - LEVEL coding is used instead of Huffman coding. Compression ratio is compared for each DCT method. Effect of coarse and fine quantization is also examined. The execution time of 2 DCT methods is also checked. In addition, most energatic DCT coefficients are also applied to examine the effect in MatLab 7.4.0 R2007a. Input is 9 gray scale pictures & output is 9*9=81 pictures to compare. Blocking effect is obvious. (This is a JPEG encoding & decoding program of still image. It does not use level shifting. Discrete Cosine transform (DCT) is performed both by classical & Chen s Flowgraph methods. Predefined JPEG quantization array & zigzag order are used here. RUN - LEVEL coding is used instead of Huffman coding. Compression ratio is compared for each DCT method. Effect of coarse and fine quantization is also examined. The execution time of 2 DCT methods is also checked. In addition, most energatic DCT coefficients are also applied to examine the effect in MatLab 7.4.0 R2007a. Input is 9 gray scale pictures & output is 9*9=81 pictures to compare. Blocking effect is obvious. )

用LSM算法来反演雷达海杂波图像，获得海浪的各种特征信息(LSM algorithm used to invert radar sea clutter images, access information about various features of the waves)

Matlab Helping of the DSP Work how to connect and install driver of the dsp

matlab三角级数法合成人工地震波算例(matlab triangular series synthesis examples of artificial seismic waves)

　　　以X射线检测焊缝图像为研究对象，针对石油焊管管端焊缝生产检验 中线阵列探测器实时成像的X射线数字图像存在的对比度不高、图像噪声及背景 起伏较大、焊缝边缘模糊且纹理较多的特点。(　　This task takes the X一ray weld seam image as the research object, in view of the X一ray image characteristics of low contrast, high image noise and fluctuated background, fuzzy weld seam edge and more texture with linear diode arrays real一time imaging in the petroleum welded pipe.Matlab simulation software is used to analysis methods of smoothing noise, gray transform enhancement, and image segmentation for image processing.)

This is the simulation of Photoshop magic wand effect of Matlab procedures for image segmentation

2003-2011年的全国大学生数学建模题目(2003-2011 subject of mathematical modeling)

数学问题的优化matlab算法实现，线性优化等问题(Matlab optimization mathematical problem algorithm, linear optimization problems)

说明：  不用直接调用函数的canny算子的matlab源码，可以直接运行产生结果。(Without directly calling functions canny operator matlab source code, can run to produce results.)

BP神经网络模型的建立过程，并利用模型来验证模型的准确性。两部分输入输出数据(BP neural network modeling process and use the model to verify the accuracy of the model. The two input and output data)