I ve written some many years ago dynamic Huffman algorithm to compress and decompress data. It is mainly targeted to data with some symbols occuring more often than the rest (e.g. having some data file consisted of 3 different symbols and their total number of occurence in that file s1(1000), s2(200), s3(30) so the total length of file is 1000+200+30=1230 bytes, it will be encoded assigning one bit to s1 and 2 bits to s2, s3 so the encoded length will be 1*1000+2*(200+30)=1460 bits=182 bytes). In the best case the file consisted of just one symbol will be encoded with compression ratio as 1:8. Huffman coding is used in image compression, however in JPEG2000 arithmetic codec is imployed.
资源简介：I ve written some many years ago dynamic Huffman algorithm to compress and decompress data. It is mainly targeted to data with some symbols occuring more often than the rest (e.g. having some data file consisted of 3 different symbols and t...
上传时间： 2016-05-16
上传用户：aysyzxzm
资源简介：This is a program that I wrote many years ago. It is a floppy disk , disk copy,disk info,and format program. All written in masm assembler. There is also a small 252 byte driver that allows nonstandard floppy formats on dos systems below 7...
上传时间： 2013-12-21
上传用户：woshini123456
资源简介：This software was done in part for a textbook on AI I ve written called _The Basis of AI_ (tentative title, subject to change but not if I get my way). For details see: http://www.mcs.com/~drt/basisofai.html
上传时间： 2015-03-30
上传用户：cxl274287265
资源简介：Ever wondered how all those COM components that you ve written through the years play along with the .NET runtime. If you are a diehard COM developer interested in knowing how Classic COM Components are positioned in the .NET world or how C...
上传时间： 2013-12-18
上传用户：kristycreasy
资源简介：Overview In this chapter I introduce Borland C++Builder (BCB) and explain what it is about. I also devote considerable time to explaining the purpose of this book and the philosophy behind my approach to technical writing. Technical subject...
上传时间： 2014-01-04
上传用户：小鹏
资源简介：自制51编程器 I have build my own programmer. This device can program the AT89C51 and works with it. So it can easily be adapted to programming other devices by itself. The Atmel Flash devices are ideal for developing, since they can be...
上传时间： 2015-05-11
上传用户：sdq_123
资源简介：杭电 ACM 1002 I have a very simple problem for you. Given two integers A and B, your job is to calculate the Sum of A + B.
上传时间： 2014-01-12
上传用户：dave520l
资源简介：In this article I’ll show you how to compress and extract files easily in java using ziputil.jar.
上传时间： 2014-11-22
上传用户：manlian
资源简介：In this demo, I use the EM algorithm with a Rauch-Tung-Striebel smoother and an M step, which I ve recently derived, to train a two-layer perceptron, so as to classify medical data (kindly provided by Steve Roberts and Will Penny from EE, I...
上传时间： 2016-04-15
上传用户：zhenyushaw
资源简介：Wavelets have widely been used in many signal and image processing applications. In this paper, a new serial-parallel architecture for wavelet-based image compression is introduced. It is based on a 4-tap wavelet transform, which is reali...
上传时间： 2014-01-22
上传用户：hongmo
