a small program by Yuval Fisher that has gone a long way to revealing some of the secrets of fracal image compression.
标签： revealing program secrets Fisher
上传时间： 2015-12-24
上传用户：脚趾头
This library allows creating, modifying and extracting zip archives in the compatible way with PKZIP (2.5 and higher) and WinZip. Supported are all possible operations on the zip archive: creating, extracting, adding, deleting files from the archive, modifications of the existing archive. There is also the support for creating and extracting multiple disk archives (on non-removable devices as well) and for password encryption and decryption. This module uses compression and decompression functions from zlib library by Jean-loup Gailly and Mark Adler.
标签： compatible extracting modifying creating
上传时间： 2014-12-22
上传用户：chfanjiang
使用Usb cy7c68013与DSP通信，现在已经能够很正确的传递（上传数据）了。 USB资源： 使用了Ep２，Ep６ Ep2, out auto Ep6, in auto FlagA－－－ PF3 FlagB－－－ PF6 FlagC－－－ PF1 需要 EP２ EMPTY EP6 FULL信号 因此 FlagA－－－ PF3 －－－ EP2空 －－－ ８ h FlagB－－－ PF6 －－－ EP6满 －－－ e h FlagC－－－ PF1 PINFLAGSAB＝0xE8 极性设置： PKTEND，EPEF，EPFF high 其他的低 因此 FIFOPINPOLAR = 0x23 包结束信号接在DSP 的 PF７ 上面。 以上结束06.11.28
上传时间： 2015-12-27
上传用户：youke111
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
Jpeg2000编解码器，附VC、Delphi等常用编程语言的使用例程 J2K-Codec ver 1.9 === === === === === === === === ===== Make your graphics look better with an easy-to-use JPEG 2000 decoding component. J2K-Codec can help game developers, screensaver creators and many others to improve their products--to achieve better image quality and reduce installation package size. The new image compression standard based on wavelet technology has many interesting features not available in the old JPEG, such as alpha-channel and varied resolution levels.
上传时间： 2013-12-27
上传用户：kytqcool
％ BackgroundRemoval=[true],false ％ Gain=[tsquare],linear ％ BandPass=[paul],fircls ％ CenterFrequency, auto (determined using pburg) ％ BandWidth=auto (a fraction of the CenterFrequency default=0.25) ％ ContrastStretch=[true],false ％ HilbertAmplitude=[true],false ％ HorizontalStacking=1 (a number of traces) ％
标签： BackgroundRemoval CenterFrequen BandPass tsquare
上传时间： 2016-03-04
上传用户：yyq123456789
老外的超高效率压缩，High efficient Data Compression Library for use with Delphi. Support Rank, ZIP, BZIP and PPM compression algorithms. Compression ratio more than 1.5-2 times better than ZIP/RAR archiver. Compression speed up to 8 Mb/sec (on PIII-600).
标签： 高效率
上传时间： 2014-01-02
上传用户：athjac
This document is intended to serve as an introduction to Wavelet processing through a set of Matlab experiments. These experiments will gives an overview of three fundamental tasks in signal and image processing : signal, denoising and compression. These scripts are selfs contents (needed additional Matlab functions can be downloaded while reading the lectures). Each one of these five lectures should take between 1h and 2h in order to tests the various features of the scripts. One should copy/paste the provided code into a file names e.g. tp1.m, and launch the script directly from Matlab comand line > tp1 . Some of the scripts contains "holes" that you should try to fill on your own. I also provide the complete correction of these lectures as a set of Matlab scripts, but you should try as much as possible to avoid using them.
标签： introduction processing document intended
上传时间： 2016-03-22
上传用户：qlpqlq
zlib is designed to be a free, general-purpose, legally unencumbered -- that is, not covered by any patents -- lossless data-compression library for use on virtually any computer hardware and operating system. The zlib data format is itself portable across
标签： general-purpose unencumbered designed covered
上传时间： 2014-01-13
上传用户：hfmm633
包含了对于灰度图像的8种jpeg无损压缩的预测方法，这是用来学习jpeg loseless compression的非常好的例子。idc.h为头文件, image_size.c和readimage.c用来读取目标文件的大小和每个像素的灰度值, jpegll_enc.c和jpegll_dec.c为编码和解码文件。
上传时间： 2016-04-22
上传用户：love1314
