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updated 2 months ago

JPEG-based computing by Boris

This is a function to test a JPEG-based encoding/decoding algorithm (demo, image processing, compression)

entropy_cod( input_matrix, n)

get_quantization( q )

huffman_cod( input_matrix)

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updated 4 months ago

Compression (shannon fano) by John Diaz

Compression (shannon fano) gui (communications, demo, gui)

codificacion(varargin)

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updated 4 months ago

Byte encoding utilities by Kota Yamaguchi

Matlab utilities to encode/decode Base64 string and GZIP bytes. (data import, encode, base64)

base64decode(input)

base64encode(input)

gzipdecode(input)

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updated 4 months ago

Read and write miniSEED file by François Beauducel

Imports and exports data files in seismological format "mini-SEED" (data import, miniseed, geophysics)

mkmseed.m

rdmseed.m

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updated 6 months ago

Speech Processing Toolbox by Ankitkumar Chheda

Speech Processing Operation like FADE-IN, FADE-OUT, COMPRESSION AND AMPLIFICATION (fade in, fade out, amplification)

GUI_exp4_new(varargin)

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updated 6 months ago

MATLAB Implementation of Harmonic ANalysis of Time Series (HANTS) by Mohammad Abouali

Harmonic ANalysis of Time Series (HANTS) (harmonic analysis, c, compression)

[Data]=ReconstructImage(amp,phi,nb)

[amp,phi,yr]=HANTS(ni,nb,nf,y,ts,HiLo,low,high,fet,dod,delt...

[yOut, amp, phi]=ApplyHants(y,nb,nf,fet,dod,HiLo,low,high,d...

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updated 1 year ago

Wavelet Decomposition For Images by Michael Chan

The demo decouples the wavelet operations from the plotting. (denoising, transform, compression)

PSNR(A,B)

displayResultantWaveletImages(A, H, V, D, levelOfDecomposit...

observeWaveletDecompositionBenchmark_N_levels.m

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updated 1 year ago

Levenstein Coding by Marcos Bolanos

This code implements the Levenstein universal coding method. (information theory, channel coding, levenstein)

Levenstein.m

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updated 1 year ago

SPIHT by Kanchi

SPIHT matlab code (without Arithmatic coding stage) (spiht wavelet image c..., compression, ccsds)

func_DWT(I, level, Lo_D, Hi_D);

func_InvDWT(I_W, S, Lo_R, Hi_R, level);

func_MyDescendant(i, j, type, m)

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updated 1 year ago

colormap_adjust by W. Owen Brimijoin

This function adjusts the contrast of the selected colormap using a hyperbolic sine transformation. (colormap, printing, compression)

colormap_adjust(scale,varargin)

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updated almost 2 years ago

aztec algorithim by abhijith bailur

compression of ecg using aztec (compression, aztec, ecg)

abhiaztec.m

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updated almost 2 years ago

FAN ALGORITHIM by abhijith bailur

commpression of ECG using FAn algorithim (ecg, compression, fan algorithim)

abhi_Fan_Algorithm.m

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updated 2 years ago

Example of Lempel Ziv coding by Andrea Cirillo

It's a Matlab function to codify a string of chars with Lempel-Ziv compression algorithm. (communications, signal processing, compression)

lempel_ziv(alfabeto, stringa)

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updated 2 years ago

Wavelets and fractals: where the 2 techniques meet by Alexey Borovoy

In this submission a unique position of Haar wavelet in image processing is revealed. (haar, wavelet, fractal)

compare(N)

hwdt(x)

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updated 2 years ago

Arithmetic code to encode a string of char. by Andrea Cirillo

Arithmetic code to encode a string of char. (signal processing, coding, compression)

res=arithmetic_code(alphabet, distr_pr, string)

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updated 2 years ago

JPEG compression by Anna DB

A program in order to see how the JPEG method works. (compression, image processing, cosine transform)

compressione.m

compressione_help(varargin)

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updated 2 years ago

Image processing laboratory by Francesco Pizzo

An application with an intuitive GUI that you can use for some image processing exercises. (gui, jpeg transform, color balancing filte...)

compression(varargin)

compression_type.m

equalizza.m

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updated 2 years ago

Quadtree decomposition (Encoding) and Decoding of RGB Image by Dr. Murtaza Khan

Quadtree decomposition (Encoding) and Decoding of RGB Image of size M-by-N-by-3. (compression, rgb, image)

A =padtomakepowof2(A,varargin)

I=qtreedecode(S,values)

I=qtreergbdecode(S,valRGB)

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updated almost 3 years ago

Compression Routines by Jesse Hopkins

Compress Matlab variables in the workspace. (supports cells, structs, matrices, strings, objects) (compression java, compression)

CompressLib

packableObject

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updated almost 3 years ago

jpeg encoder by karan anand

yup this creates a jpeg file (encode, jpeg, codec)

colorspace(Conversion,varargin)

jpegfulto.m

jpegfulto_old.m

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updated 3 years ago

Zig-Zag scan by Damilola Ogunbiyi

Zig-zag and inverse zig-zag scan as used in Image Processing's JPEG compression. (compression, matlab, jpeg)

out=invzigzag(in,num_rows,num_cols)

out=zigzag(in)

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updated 3 years ago

NIST (ANSI/NIST-ITL 1-2000) library (for Windows) by Cognaxon Software

Read and writes files in ANSI/NIST-ITL 1-2000 format. (ansinistitl 12000, ansinistitl 12007, wsq)

nist_demo_Create_and_Insert.m

nist_demo_Delete_Single_Field.m

nist_demo_Read_Single_Field.m

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updated 3 years ago

SparsePack by Sebastiaan

Packs a sparse matrix into a single uint8 array, reducing memory usage. (sparse, compression)

testSparsePack(NumTests, MemLim, Fake32)

SparsePack.m

SparseUnPack.m

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updated almost 4 years ago

A Numerical Tour of Signal Processing by Gabriel Peyre

A set of Matlab experiments that illustrates advanced computational signal and image processing. (approximation, wavelets, denoising)

[p,ellipse]=phantom(varargin)

b=dct(a,n)

b=dct2(arg1,mrows,ncols)

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updated almost 4 years ago

Fast function to save a matrix by Arvid Bottiger

write_matrix_bin(f,m) is a fats way to save a matrix of arbitrary size and dimension. (optimization, data, export)

read_matrix_bin( filename, varargin )

write_matrix_bin( filename, matrix, varargin )

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updated 4 years ago

Fast Import of Compressed Binary .RAW Files Created with LTspice Circuit Simulator by Paul Wagner

Loads .raw simulation files created with LTspice (a free circuit simulation tool). (circuit simulation, binary, ltspice)

LTspice2Matlab( filename, varargin )

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updated 4 years ago

Samplify Sampled Data Compression by Al Wegener

Samplify compresses samples used by A/D and D/A converters (dsp, compression, compress)

desamplify(x, opt)

desamplifyFile(infile, outfile)

rateDist(x, opt, dB)

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updated 4 years ago

Scalable MPEG compression based on DCT coefficients by Zahid Ali

This application makes 2 layers base Layer and enhancement layer from quantized coefficients (layers, image processin, dct)

BmotionEstARPS(imgP, imgI, mbSize, p)

BmotionEstARPS(imgP, imgI, mbSize, p)

BmotionEstARPS(imgP, imgI, mbSize, p)

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updated almost 5 years ago

Rudimental compression algorithms for 2D matlab plots by Francesco Pozzi

Rudimental compression algorithms for 2D matlab plots (make eps images small for your LaTeX docs!) (compression, resolution, plot)

compress2D(x, y, width, height, alpha)

compress2Dh(x, y, width, height, alpha)

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updated almost 5 years ago

Image Compression using Wavelet by Jebakumari Beulah

This code compress the image using wavelets. Both gray scale and RGB images can be applied and some (code, compress, compression)

wavecompression.m

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updated almost 5 years ago

WAVELET BASED IMAGE COMPRESSION AND SUB-BAND CODING by Krishna Mohan chowdary Adusumilli

Wavelets are used both in compression and coding (compression, image compression, subband coding)

CODE.m

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updated almost 5 years ago

Adaptive Huffman Coding by Matt Clarkson

Adaptive Huffman Encoding/Decoding for 1D arrays of 8 or 16bit unsigned integers (adaptive huffman codi..., compression)

adaptivehuffman(stream,type)

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updated almost 5 years ago

Visualization of Huffman Encoding Trees by Jason Agron

Simple program that builds and visualizes a huffman encoding tree for a user-defined string (visualize, encoding, huffman)

Huffman Encoding Example

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updated 5 years ago

image compression using run length ecoding by Shoeb Temrikar

rle application to image compression (rle, binray, image compression)

rlemain.m

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updated 5 years ago

EZW (Embedded Zerotree Wavelet) by Kanchi

Matlab implementation of EZW (Embedded Zerotree Wavelet) (compression, ezw, embedded zerotree)

func_DWT(I, level, Lo_D, Hi_D);

func_InvDWT(I_W, S, Lo_R, Hi_R, level);

func_Myappcoef2(c,s,varargin)

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updated 5 years ago

mpeg compression by Zahid Ali

Mpeg compression (compression, image processing, mpeg compression)

BmotionEstARPS(imgP, imgI, mbSize, p)

BmotionEstARPS(imgP, imgI, mbSize, p)

BmotionEstDS(imgP, imgI, mbSize, p)

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updated 5 years ago

Prediction with Partial Match (PPM) by Min Kyeong Lee

The context-based compression (compression, ppm, prediction with parti...)

ppm.m

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updated 5 years ago

LZW encoder/decoder by Claudiu Giurumescu

Implements a TIF compatible LZW encoding/decoding algorithm (lzw, encoder, compression)

Example.m

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updated 5 years ago

WSQ image library (for fingerprints) v.2.8 by Cognaxon Software

Reads and converts WSQ (FBI's Wavelet Scalar Quantization) and 31 other formats. (compression, wsq, wavelet scalar quanti...)

wsq_demo.m

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updated 5 years ago

Wavelet based image compression using segmentation by THAYAMMAL SUBBURAJ

The optimal wavelet function in wavelet based image compression system was examined using different (compression, image compression, wavelet)

Bior11.m

Bior11.m

Bior11.m

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updated almost 6 years ago

2-D DCT/IDCT for JPEG Compression by Ahmed Samieh

Fast Implementation of 8X8 DCT/IDCT for JPEG Compression (2d dct, jpeg, dct2)

DCT_8X8(I)

IDCT_8X8(I)

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updated almost 6 years ago

JPEG Encoder Decoder by Muhammad Anwarul Azim

image encode/decode using DCT, quantization, zigzag reordering & run-level coding of JPEG standard (compression, jpeg encode decode, thank)

jpeg

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updated 6 years ago

Another LZW compression algorithm by Haiyong Xu

Simple LZW algorithm implementation. (image processing, implementation, algorithm)

norm2lzw(vector)

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updated 6 years ago

Wavelet Fractal compression by Muhammad Reza nasiri avanaki

it is proposed an efficient approach for compression microarray images. It is utilized a hybrid wave (compression, wavelet fractal compr..., buried fractal compre...)

wavelet_fractal_compressor.m

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updated 6 years ago

Speech compression using Linear Predictive Coding by Hamza Kadir

A lossy speech compression algorithm. (audio processing, compression, linear predictive cod...)

f_DECODER (aCoeff, pitch_plot, voiced, gain);

f_ENCODER(x, fs, M);

f_GAIN (e, voiced_b, pitch_plot_b); %gain of 1 (current) fr...

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updated 6 years ago

Compression Ratio by Madhu S. Nair

Get the compression ratio (image compression rat..., compression, image)

assign1.m

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updated 6 years ago

IMAGE COMPRESSION & RECONSTRUCTION OF IMAGES by BABY VIJILIN

PROGRAM DECOMPOSE IMAGE,COMPRESS IT, RECONSTRUCTION IS PERFORMED. (compression, reconstruction, quality)

PQS=pqs(A,B,blok)

vi2.m

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updated almost 7 years ago

3D-SPIHT by DIONYSIOS ATHANASOPOULOS

The 3D Set Partitioning In Hierarchical Trees Matlab Code (ima, hierarchy, 3dspiht)

SPIHT_main(nFrame,filename)

func_DWT(I, level, type);

func_Descendant(i, j, k, type, M)

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updated almost 7 years ago

JPEG Compression by Farhat Masood

This program clears the jpeg compression (coding theory, information theory, jpeg)

jpeg

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updated 7 years ago

Run Length Encoding of SPIHT by Ravi Lakkundi

SPIHT Run length encoded (compression, spiht, wavelet image compres...)

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