Score: 184
Uploads: 5
Downloads: 19
Create time: 2018-10-21 21:54:33

Upload log:
wavelet-image-compression.zip - wavelet-image-compression Simple FPGA-based Wavelet Image Compression component and an example usage. This is a sample solution to our laboratory exercise *Image compression with Discrete Wavelet Transform* published in the scope of the EU-FP7 project [Image compression with Discrete Wavelet Transform].Description of the implemented solution can be found (documentation/wavelet-solution-documentation_v1.1.pdf).
Huffman coding and arithmetic coding.zip - In computer science and information theory, a Huffman code is a particular type of optimal prefix code that is commonly used for lossless data compression. Arithmetic coding is a form of entropy encoding used in lossless data compression. Normally, a string of characters such as the words "hello there" is represented using a fixed number of bits per character, as in the ASCII code. When a string is converted to arithmetic encoding, frequently used characters will be stored with fewer bits and not-so-frequently occurring characters will be stored with more bits, resulting in fewer bits used in total.
JPEG Encoder Decoder.zip - JPEG is a commonly used method of lossy compression for digital images, particularly for those images produced by digital photography. The degree of compression can be adjusted, allowing a selectable tradeoff between storage size and image quality. JPEG typically achieves 10:1 compression with little perceptible loss in image quality.JPEG compression is used in a number of image file formats. JPEG/Exif is the most common image format used by digital cameras and other photographic image capture devices; along with JPEG/JFIF, it is the most common format for storing and transmitting photographic images on the World Wide Web.[3] These format variations are often not distinguished, and are simply called JPEG. The term "JPEG" is an initialism/acronym for the Joint Photographic Experts Group, which created the standard.
Arithemetic coding in matlab.zip - The string of bits generated by the encoder during the subordinate pass is entropy encoded using a custom version of adaptive arithmetic coding
EZW128.zip - The EZW technique is considered to be computationally complex. In addition to the use of many symbols, the EZW relies on additional coding techniques to code its final results. The EZW algorithm was later replaced by a much faster and computationally superior coding technique known as Set Partitioning in Hierarchical trees (SPIHT)

Download log:
wavelet_db.rar - 利用提升方案实现db9/7和db5/3小波滤波器,并用该小波进行图像的分解
waveletcdf.rar - Cohen-Daubechies-Fauraue 9-7 Wavelet Transforms . CDF小波分解matlab源代码
CDF_9_7_Wavelet_Transform.zip - CDF 9/7 Wavelet Transform matlab code
Images.rar - 图像处理中常用的的标准图像,已经分类,包括PNG、BMP、TIFF、JPG等,未进行二次处理
EZW.zip - 一个简单的EZW编码算法,效率较高,可直接应用试验
ssbianmasxwen.rar - 算术编码,采用了基于上下文的自适应算术编码,
xinxilun.rar - 完整的算术编码的编码和译码程序。结合教材:王育民版的信息论与编码。
900404.rar - spiht matlab,其中包括SPIHT算法的编码和解码 不错的 很好
Modify-SPIHT.rar - 修改后的SPIHT代码,比有链表SPIHT压缩速度快。
spiht-0.3.rar - spiht matlab,其中包括SPIHT算法的编码和解码
SPIHT-matlab.zip - 一种基于小波变换,压缩编码效率很高的静止图像压缩编码算法SPIHT,本程序使用matlab实现
EZW.rar - jpeg compressionnnnnnnn
ezw.zip - ezw coding algorithm for image
EZWcode.rar - 嵌入式小波零树(EZW)算法的过程详解和Matlab代码。
EZW.rar - 本代码经过本人多次调试运行过,绝对可用。用户可根据里面的(执行步骤)这一文件运行程序。该ezw代码基于raster扫描顺序(有别于常用的morton扫描顺序)来编写的。
modified_ezwmatlab_vnp.rar - EZW coding implementation. using wavelet transforms as a key tool. compression and decoding is done using modified EZW algorithm.
EZWdecode.rar - 嵌入式小波零树(EZW)算法的过程详解和Matlab代码(3)解码过程
63.rar - EZW算法的过程详解和Matlab代码(1)构建扫描次序表(修正小波树结构)写出EZW算法的Matlab程序,可以实现图像的任意级别的小波分解和重构、以及任意精度的EZW编解码过程。下面,我们以一幅16*16的Lena局部图像经过3级小波分解后的小波数据为例详细的说明EZW算法的编解码过程,并给出相应的Matlab代码。
EZW-matlab.rar - 该压缩包为数字图像处理中的嵌入式零树小波算法的MATLAB源代码,上机调试过,可完美运行。