cockroach

16字节字符串压缩成12字节字符串算法，有压缩和解压的算法(16-byte string into a 12-byte string compression algorithm, compression and decompression algorithms)

Huffman编码，使用哈弗曼树生成前缀码，把输入的字符编码并把原字符解码(Huffman code and decode)

说明：  一个简单的32位位图压缩算法，基本思想是，扫描像素点，后面有雷同的就记下重复次数。(A simple 32-bit bitmap compression algorithm, the basic idea is to scan pixel, behind identical repetitions on the record.)

pcl 源码 点云数据的压缩显示，压缩数据的算法(display pcl source point cloud data compression algorithm to compress data)

说明：  vc 典型模块 是一个图像压缩显示的程序(vc typical module is shown in an image compression program)

霍夫曼编码的C++实现,输入一组字符串，输出每个字符的编码及整个字符串的霍夫曼编码。(realization of Huffman coding using VC++)

PAV (H265) 是 音视频 压缩解压 协议，非常不同于H264/MPEG4，ZPAV (H265) 的基本算法 是 小波，多级树集合群，广义小波，数学形态小波，...... ZPAV (H265) 基本算法 ： 1，图象与声音分解与合成 ：小波 ； 2，图象与声音前处理 ：小波子带零交叉降噪，目标纹理处理，语音处理 ； 3，速率控制 ：小波子带熵速率控制 ； 4，量化与反量化 ：小波子带熵量化与反量化 ； 5，低频分量和高频分量的降维 ：小波子带邻域交叉降维 ； 6，运动矢量和量化表的分解与合成 ：广义小波 ； 7，位面编码 ：数学形态小波，多级树集合群，嵌入零树，位面降维 ； 8，位流编码 ：算术编码，熵编码 ； 9，运动估计 ：宏块最优决策，运动矢量预测 ； A，运动搜索 ：钻石，大钻石，小钻石，方形 ； B，图象与声音后处理 ：低通滤波，断点重构，宏块平滑 ； C，误码纠错 ：矢量仿真，帧间仿真 。 (The PAV (H265) is the audio and video compression and decompression protocol, is very different from H264/MPEG4 ZPAV (H265) algorithm is a wavelet, multi-level tree collection group, and generalized wavelets, mathematical morphology, wavelet, ... ZPAV (H265) algorithm: 1, image and sound decomposition and synthesis: wavelet 2, image and sound processing: wavelet sub-band zero-crossing noise, target texture processing, speech processing 3, the rate control: wavelet subband entropy rate control 4, quantization and inverse quantization: Wavelet subband entropy quantization and inverse quantization 5, the dimensionality reduction of the low frequency component and high frequency components: the wavelet subbands neighborhood cross-dimensionality reduction 6, the decomposition and synthesis of the motion vector and quantization tables: generalized wavelet 7, bit-plane coding: the mathematical form of wavelet multi-level tree collection group, embedded zerotree, bit plane)

顺序表插入删除，典型的教科书式的程序。老师给的。。。。。。(The order of the table insert removed, a typical textbook-style programs.)

一种改进的方案，它针对硬故障集的特点利用指示频率连续长度码(FDR码)进行二次编码压缩。该方法充分利用测试集中无关位较多而测试模式之间变化位较少的特征，应用贪心算法对预先计算的测试集进行了重新排序，尽可能的使相邻的向量间具有最少的不同位，排列成一个最佳的差分向量序列，然后应用FDR码对差分向量序列进行编码,最后对压缩结果重新分块，按照一次压缩的流程进行二次压缩。在解压时，使用片上解压电路解压，能高效地还原出原测试集。最后通过对Soc部分标准电路硬故障集的测试结果显示，本方案具有较好的压缩率。(a new improved method was proposed in the paper,the method using Frequency-Directed Run-length(FDR codes)coding for the twice aimed at hard-fault. It fully takes advantage of the characters that there are many don’t-care bits in the test set but a few different bits between the test patterns, Then it applies the greed calculate way to sort the precomputed test sets and make the close together vector have the least different sites possibly. It uses the FDR codes to coding the vectors,then blocks the results and uses the FDR codes to compress for the second time. Decompression used of on-chip circuit extract unpack,it will be deoxidize the original test efficient.using the hard-fault to compress and the experimental results prove that the improved coding method of this paper has the better compression ratios has been proved at last. )

不可压缩稳态滑块润滑，一定长度的变间隙油膜厚度解析(Incompressible variable gap steady slide lubrication film thickness resolve certain length)