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[Compress-Decompress algrithmsSPIHT(Matlab).zip

Description:

% Matlab implementation of SPIHT (without Arithmatic coding stage)
%
% By Jing Tian, scuteejtian@hotmail.com

fprintf('-----------   Welcome to SPIHT Matlab Demo!   ----------------\n');

fprintf('-----------   Load Image   ----------------\n');
infilename = 'lena512.bmp';
outfilename = 'lena512_reconstruct.bmp';

Orig_I = double(imread(infilename));

rate = 1;

OrigSize = size(Orig_I, 1);
max_bits = floor(rate * OrigSize^2);
OutSize = OrigSize;
image_spiht = zeros(size(Orig_I));
[nRow, nColumn] = size(Orig_I);

fprintf('done!\n');
fprintf('-----------   Wavelet Decomposition   ----------------\n');
n = size(Orig_I,1);
n_log = log2(n);
level = n_log;
% wavelet decomposition level can be defined by users manually.
type = 'bior4.4';
[Lo_D,Hi_D,Lo_R,Hi_R] = wfilters(type);

[I_W, S] = func_DWT(Orig_I, level, Lo_D, Hi_D);

fprintf('done!\n');

fprintf('-----------   Encoding   ----------------\n');
img_enc = func_SPIHT_Enc(I_W, max_bits, nRow*nColumn, level);  

fprintf('done!\n');
fprintf('-----------   Decoding   ----------------\n');
img_dec = func_SPIHT_Dec(img_enc);

fprintf('done!\n');
fprintf('-----------   Wavelet Reconstruction   ----------------\n');
img_spiht = func_InvDWT(img_dec, S, Lo_R, Hi_R, level);

fprintf('done!\n');
fprintf('-----------   PSNR analysis   ----------------\n');

imwrite(img_spiht, gray(256), outfilename, 'bmp');

Q = 255;
MSE = sum(sum((img_spiht-Orig_I).^2))/nRow / nColumn;
fprintf('The psnr performance is %.2f dB\n', 10*log10(Q*Q/MSE));


Platform: | Size: 232873 | Author: jasonchang | Hits:

[Graph programspiht matlab源码

Description: spiht matlab源码
Platform: | Size: 180532 | Author: money9sun@163.com | Hits:

[Compress-Decompress algrithmsNo list SPIHT

Description: 无链表SPIHT算法,速度比JPEG2000快,压缩比差不多-Listless SPIHT, JPEG2000 faster than the speed, compression ratio almost
Platform: | Size: 2048 | Author: 王晓东 | Hits:

[matlabSPIHT-matlab

Description: 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-based on wavelet transform, high efficiency coding static image compression algorithm SPIHT, the procedures used to achieve Matlab
Platform: | Size: 232448 | Author: 李一 | Hits:

[Multimedia DevelopSPITH-Matlab

Description: Matlab编写的SPIHT 也叫层树分集压缩算法 本算法目前适合处理8*8的矩阵 <由于时间关系 本算法还不能对大的图像进行操作 但是主要的思想算法都在 只要稍做修改即可>希望对大家会有帮助 -Matlab prepared SPIHT also called tree diversity layer compression algorithm suitable for the processing algorithm currently 8* 8 the Matrix
Platform: | Size: 4096 | Author: lin | Hits:

[GDI-BitmapWavelet.6.SPIHT

Description: 图像压缩算法——小波变换6层提升算法SPIHT. 通过些算法可以改变压缩效率。 -Image Compression Algorithm-- 6-wavelet transform algorithm SPIHT upgrade. Through these compression algorithm can effect change rate.
Platform: | Size: 198656 | Author: 杨晓宇 | Hits:

[Special Effectsspiht-0.3

Description: spiht matlab,其中包括SPIHT算法的编码和解码-spiht Matlab, including SPIHT coding and decoding
Platform: | Size: 179200 | Author: martin | Hits:

[OtherImproved-fast-SPIHT-algorithm

Description: 改进的快速SPIHT 算法.针对原算法的不足引入了“最小阈值”和“最小输出位”,同时改变了原算法的扫描顺序,降低了算法的复杂程度,并使其更有利于并行优化处理。实验证明,改进后的算法减少了编解码过程中的存储容量和时间消耗,而重建图像的峰值信噪比和人眼视觉效果与原算法相当。-improved fast SPIHT. Against the original algorithm of the introduction of the "minimum threshold" and "the smallest output ", and also changed the original algorithm scanning sequence, reducing the complexity of the algorithm, and make it more conducive to optimizing the parallel processing. Experiments show that the improved algorithm to reduce the codec in the process of storage capacity and time consumption, and reconstruction in PSNR and the human visual effects and the original algorithm.
Platform: | Size: 203776 | Author: luis | Hits:

[Special EffectsSPIHT

Description: Spite压缩源码,matlab编写,希望对您能有很大帮助-Spite compressed source, Matlab prepared, and I hope to you can be of great help
Platform: | Size: 232448 | Author: 张文国 | Hits:

[matlab3D-SPIHT

Description: 用matlab做的三维视频压缩编码算法,希望对大家有帮助-Using matlab to do three-dimensional video compression coding algorithm, in the hope that everyone has to help
Platform: | Size: 8192 | Author: andandan | Hits:

[Compress-Decompress algrithmsspiht

Description: SPIHT的MATLAB源代码,希望对有需要的朋友有所帮助.-SPIHT the MATLAB source code, in the hope that there is a need to help a friend.
Platform: | Size: 8192 | Author: LL | Hits:

[Special Effectsspiht

Description: 小波变换编码SPHIT的matlab下详细实现-Wavelet Transform Coding SPHIT detailed realization of the matlab
Platform: | Size: 973824 | Author: cactuslee | Hits:

[Compress-Decompress algrithmsSPIHT

Description: 实现SPIHT算法!!!!使用MATLAB 实现程序-SPIHT algorithm realize!!!! Realize the use of MATLAB procedures
Platform: | Size: 37888 | Author: ljjk | Hits:

[Compress-Decompress algrithmsModify-SPIHT

Description: 一种SPIHT的改进算法!!!mallat算法实现,还有待提高!多联系lhz_5156@163.com -Improvement of a SPIHT algorithm!!! Mallat algorithm still improve! Lhz_5156@163.com multi-link
Platform: | Size: 19456 | Author: ljjk | Hits:

[WaveletSPIHT-code

Description: SPIHT算法是一种简单、有效的嵌入式零树编码算法,需要的自然明白它的作用-SPIHT algorithm is a simple, effective embedded zero-tree coding algorithm, the natural need to understand its role
Platform: | Size: 301056 | Author: | Hits:

[Special EffectsSPIHT(Matlab)

Description: 基于图象小波变换的图象编码的经典算法.程序中包括压缩和解压缩的过程,有可执行的示例.-Image-Based Wavelet Transform Image Coding Algorithm classic. Procedures, including compression and decompression process, the sample has executable.
Platform: | Size: 974848 | Author: | Hits:

[OtherSPIHT

Description: 这是SPIHT压缩的原始程式码, 也就是JAVA的程式码。-This is the SPIHT compression source code, that is, JAVA code.
Platform: | Size: 3072 | Author: SHIN | Hits:

[Special Effectsspiht

Description: 该源码是spiht多集树集合编码算法的图像编码,-The source tree is a collection of episodes SPIHT coding algorithm image coding,
Platform: | Size: 177152 | Author: 赵明 | Hits:

[Compress-Decompress algrithms4D-SPIHT

Description: 4-D SPHIT 压缩Matlab 程序-4-D SPHIT compression Matlab procedures
Platform: | Size: 7168 | Author: deepblue0755 | Hits:

[Compress-Decompress algrithmsMATLAB-SPIHT_v1.0_02-12-08_2

Description: compression image withe spiht matlab
Platform: | Size: 71680 | Author: sussou | Hits:
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