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 realised using some FIFO memory modules implementing a pixel-level pipeline architecture to compress and decompress images. The real filter calculation over 4 · 4 window blocks is done using a tree of carry save adders to ensure the high speed processing required for many applications. The details of implementing both compressor and decompressor sub-systems are given. The primarily analysis reveals that the proposed architecture, implemented using current VLSI technologies, can process a video stream in real time.
标签： applications processing Wavelets widely
上传时间： 2014-01-22
上传用户：hongmo
This is a little console mode utility program which is able to (de-)compress single files with a static Arithmetic compression algorithm. You could easily add the RLE/BWT/MFT data transformation algorithms. Just rip the corresponding classes out of my HuffComp source code. I won t add these ones in the next time.
标签： compress console utility program
上传时间： 2015-08-27
上传用户：lili123
this compress with vc.very cool.it is so little
上传时间： 2015-09-04
上传用户：sardinescn
Quad Tree Bit Plane Compression. A program to compress images. Qbit is an image viewer that loads and saves it s own imge format as well as loading various Sun Raster File, Targa and Bitmap files.
标签： Compression compress program images
上传时间： 2014-01-10
上传用户：大融融rr
We often get questions about how the deflate() and inflate() functions should be used. Users wonder when they should provide more input, when they should use more output, what to do with a Z_BUF_ERROR, how to make sure the process terminates properly, and so on. So for those who have read zlib.h (a few times), and would like further edification, below is an annotated example in C of simple routines to compress and decompress from an input file to an output file using deflate() and inflate() respectively. The annotations are interspersed between lines of the code. So please read between the lines. We hope this helps explain some of the intricacies of zlib.
标签： functions questions deflate inflate
上传时间： 2014-01-02
上传用户：zhuyibin
Zlib函数列表 We often get questions about how the deflate() and inflate() functions should be used. Users wonder when they should provide more input, when they should use more output, what to do with a Z_BUF_ERROR, how to make sure the process terminates properly, and so on. So for those who have read zlib.h (a few times), and would like further edification, below is an annotated example in C of simple routines to compress and decompress from an input file to an output file using deflate() and inflate() respectively. The annotations are interspersed between lines of the code. So please read between the lines. We hope this helps explain some of the intricacies of zlib.
标签： functions questions deflate inflate
上传时间： 2014-01-03
上传用户：lhc9102
Bloat is a basic Perl script to allow you to easily decompress files from many formats.
标签： decompress formats easily script
上传时间： 2014-10-28
上传用户：hn891122
This program compress and recostruct using wavelets. We can select level of decomposition(here maximum 4 levels are given) of images using selected wavelet. For eg:-wavelets can be haar, db1, db2,dmey............... Decomposition can be viewed in figure. (Please note that select 256X256 image for better result.) Then compression can performed, PERFL2 give compression score. Then reconstruction can be performed. Each decompsition we can choose different threshold values. For each threshold value we can calculate mse,psnr,pq(picture quality), bit ratio etc. To get pq install pqs function .
标签： decomposition recostruct compress wavelets
上传时间： 2016-01-22
上传用户：liuchee
Compress - SuperFast Packer v.3.0.zip
标签： SuperFast Compress Packer zip
上传时间： 2016-01-27
上传用户：xaijhqx
This sample demonstrates compression capabilities available in the .NET Framework. It builds a Windows Forms application that employs the GZipStream and DeflateStream types to compress and decompress files. The sample also introduces several types that are new in the .NET Framework version 2.0.
标签： demonstrates capabilities compression Framework
上传时间： 2016-03-30
上传用户：playboys0
