threshoding.zip - 图像threshoding是在图像分割了非常重要的作用。该程序会自动找到threshod。,2015-02-05 11:54:03,下载1次
gcd_lcm.rar - 给出两整数a与b, 找出a与b的最小公倍数LCM(a,b), 找出a与b的最大公因子GCD(a,b).,2010-06-27 18:21:02,下载1次
2009_An_Improved_SPIHT_Algorithm_Based_on_Pixel_Do - 基于像素域的改進的SPIHT算法:分層樹的集分割算法是一種簡單、有效的嵌入式零樹編碼算法.在算法的基礎上提出了一種基于空域的改進方法.首先將圖像的偶數裂像素減去相鄰兩奇數列的均值,形成分裂圖像.然后將分裂圖像的奇數列提取出來作為主圖像,將偶數列提取出來作為幅圖像.最后將主幅圖像以合適的權值分別進行壓縮,2009-06-30 00:34:48,下载6次
2009_the_Algorithm_Improves_in_Dyadic_System_Owing - 嵌入式系統中SPIHT算法改進的研究: 本文在重點分析研究SPIHT算法的基礎上,結合現有技術提出一種改進的SPIHT算法.改進的SPIHT算法通過采用提升小波變換、結合人眼視覺特性、對算法的分集排序過程進行優化等措施,進一步提高壓縮性能,而且圖像復原質量較好.,2009-06-30 00:18:39,下载3次
2009_Image_Compression_Algorithm_of_SPIHT_Based_on - 一種基于塊樹結構的SPIHT數字圖像壓縮算法: 在分析圖像經過小波變換后所具有的特性的基礎上,提出了一種改進的SPIHT算法.由于低頻系數占據圖像的百分之九十以上的能量,在圖像的重構中十分重要,所以,對這些系數不進行壓縮而直接傳輸 而最高頻系數相對不重要,所以不做處理,只在圖像重構時以指定的數值予以重構,因此不僅提高了圖像的質量,同時提高了圖像的壓縮率.在具體的算法中,提出了塊樹的結構,減少了算法所需的內存,拓寬了算法的應用范圍.,2009-06-30 00:14:33,下载12次
An_Improved_of_spiht_Algorithm_Based_on_Variable_T - 針對傳統小波變換過程復雜的缺點和SPIHT算法編碼過程重復運算、存儲量大的問題,首先分析了小波基和小波分解層數的選擇,然后提出了一種新的可變閾值的SPIHT算法,該算法利用可變閾值對SPIHT算法中不重要像素列表(LIP)和不重要系數列表(LIS)進行分類得到一種更有效的編碼算法.仿真結果表明,該算法的壓縮整體性能要好于SPIHT算法.,2009-06-30 00:07:34,下载7次
QccPack-0.58-1.rar - QccPack provides an open-source collection of library routines and
utility programs for quantization, compression, and coding of data. QccPack
has been written to provide very flexible and general implementations of
procedures commonly used in coding and compression applications.
,2009-06-29 23:50:25,下载7次
QccPackSPECK-0.58-1.rar - The QccPackSPECK module is a optional addon to the QccPack library for
the quantization, compression and coding of data. ,2009-06-29 23:13:35,下载22次
libQccPackSPIHT.rar - The QccPackSPIHT module also provides the 3D-SPIHT algorithm for image-cube
coding. See the file LICENSE-3D-SPIHT for licensing information for
3D-SPIHT.,2009-06-29 23:10:45,下载14次
finite_ridgelet_transform_toolbox.rar - ridgelet 变换源代码,图象处理方面有广泛应用空间- MATLAB source code that implements the finite ridgelet transform in the paper "The finite ridgelet transform for image representation".
,2007-07-11 15:00:32,下载450次
contourlet_toolbox.zip - contourlet变换源代码,图象处理方面有广泛应用空间-MATLAB source code that implements the contourlet transform and its utility functions. See paper "The contourlet transform: an efficient directional multiresolution image representation" included in this zip file. ,2007-07-11 14:55:13,下载111次
LDSToolkit1.1.zip - Lossless Data Compression Toolkit Version 1.1 of the lossless data compression toolkit by Nico deVries. The C sources in this toolkit include an LZW compressor, AR002 archiver, a PPM like compressor using arithmetic compression, Huffman compressor, splay tree program, and LZRW1. Quite a variety. ,2007-05-04 01:19:17,下载4次
octane-1.01.20-src.zip - Octane v1.01.20
The Open Compression Toolkit for C++ .
The Open Compression Toolkit is a set of modular C++ classes and utilities for implementing and testing compression algorithms.
Simple interface and skeleton code for creating new compression algorithms.
Complete testing framework for validating and comparing new algorithms.
Support for algorithms that use external dictionaries/headers.
Utility classes and sample code for bitio, frequency counting, etc.
,2007-05-04 01:10:39,下载2次
WinBig1976112242006.zip - WinBig. A file archive utility written in VB. Compression and decompression routines are LZSS. Full source code included. ,2007-05-04 01:05:51,下载3次
zzip-zzlib-src.zip - zzip-zzlib-src.zip.
A new archiver that uses a BWT algorithm to achieve superior compression. The author has now released the source code to zzip under the GPL. ,2007-05-04 01:01:29,下载46次
sharpprivacy_src.zip - SharpPrivacy - OpenPGP for C#:
SharpPrivacy is an OpenPGP implementation in C#. It can be used to encrypt and sign data, created OpenPGP compatible keys, and a lot more. This article explains how to use the library in your own .NET application or webpage to encrypt, sign, decrypt or verify OpenPGP messages.,2007-05-04 00:52:14,下载9次
BigInteger_src.rar - C# BigInteger class. BigInteger.cs is a csharp program. It is the BIgInteger class. It has methods: abs() , FermatLittleTest(int confidence) ,gcd(BigInteger bi) , genCoPrime(int bits, Random rand) , genPseudoPrime(int bits, int confidence, Random rand) , genRandomBits(int bits, Random rand) , isProbablePrime(int confidence) , isProbablePrime() , Jacobi(BigInteger a, BigInteger b) , LucasSequence(BigInteger P, BigInteger Q, BigInteger k, BigInteger n) ,max(BigInteger bi) , min(BigInteger bi) , modInverse(BigInteger modulus) , RabinMillerTest(int confidence) , ,2007-05-04 00:46:38,下载36次
OReilly.Ajax.on.Rails.Dec.2006.rar - OReilly.Ajax.on.Rails.Dec.2006. ISBN-10: 0-596-52744-6.
Learn to build dynamic, interactive web applications using the two most important approaches to web development today: Ajax and the phenomenally efficient Ruby on Rails platform. This book teaches intermediate to advanced web developers how to use both Ajax and Rails to quickly build high-performance, scalable applications without being overwhelmed with thousands of lines of JavaScript code. More than just recipes, you also get a thorough, low-level understanding of what s happening under the hood.
,2007-05-04 00:40:03,下载8次
SPIHT_matlab_code.rar - MATLAB implementation of SPIHT (without Arithmatic coding stage).
％ Performance evaluation : this toolbox VS. SPIHT
％ Test image: lena512.raw
％ bpp SPIHT(dB) This code(dB)
％ 0.1000 29.8107 29.3202
％ 0.2000 32.7202 32.2514
％ 0.3000 34.5479 34.0331
％ 0.4000 35.8422 35.4857
％ 0.5000 36.8623 36.5939
％ 0.6000 37.6650 37.3759
％ 0.7000 38.2581 38.0491
％ 0.8000 38.9390 38.7058
％ 0.9000 39.5218 39.3437
,2007-05-04 00:30:12,下载88次
qbit.rar - 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.,2007-05-04 00:22:24,下载6次
btc_image01.rar - image compression using btc algorithm. matlab program. This function accepts an image(color or gray) and compresses it using the block truncation coding. ,2007-05-04 00:16:39,下载58次
QccPackSPECK-0.54-1.tar.gz - QccPackSPECK-0.54-1 (release 2007-04-30) is The Set-Partitioning Embedded Block (SPECK) algorithm for wavelet-based image coding. ,2007-05-04 00:06:11,下载33次
QccPackSPIHT-0.54-1.tar.gz - QccPackSPIHT-0.54-1 (release 2007-04-30)
The Set Partitioning in Hierarchical Trees (SPIHT) algorithm for wavelet-based image coding .,2007-05-04 00:03:11,下载10次
QccPack-0.54-1.tar.gz - QccPack-0.54-1 released (2007-04-30) is being developed and tested on Fedora Core Linux. QccPack provides an open-source collection of library routines and utility programs for quantization, compression, and coding of data. ,2007-05-03 23:59:07,下载5次