Freeware Listing: Image Compression

Image compression using wavelet transform *wavelet transform give better information about non-stationary signals in time domain.

  • Platform: Matlab, Scripts

IMComp is an Image COmpression Software based on MATLAB used to compress various JPEG images. This software is primarily useful for compressing images which are being taken with the help of Digital Cameras and Mobile Phones Though using IMComp degrades the quality of images. So use of compressed images in not recommended for printing purposes. Image quality does not seem to be degraded if to be used for viewing purposes. This could be handy software for compressing images and using the compressed images to E-Mail which comes out to be a major drawback of Digital Cameras which produce large image size depending on the resolution of image and image being taken.

  • Platform: Matlab, Scripts

As its name suggests, One Simple Image Compressor is an easy to use image compression tool that enables you to batch resize pictures in your computer.

The application provides support for multiple image formats, such as BMP, JPEG, GIF, ICO, PNG, WMF, EMF and more. The usage is simple: just browse for the desired input files, set the image size and quality and let the program do the rest.


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  • Platform: Windows 7, Windows 8, WinOther, WinVista

The SPIHT method is not a simple extension of traditional methods for image compression, and represents an important advance in the field. The method deserves special attention because it provides the following: Highest Image Quality Progressive image transmission Fully embedded coded file Simple quantization algorithm Fast coding/decoding Completely adaptive Lossless compression Exact bit rate coding Error protection Encoding/Decoding Speed The SPIHT process represents a very effective form of entropy-coding. This is shown by the demo programs using two forms of coding: binary-uncoded (extremely simple) and context-based adaptive arithmetic coded (sophisticated).

  • Platform: Matlab, Scripts

Disk Image freeware - Active@ Disk Image Lite edition is a fully functional free disk image backup software having the core features of more advanced versions. The main features: Creating Backup Disk Image (occupied clusters only), Image Compression (Normal and High). If you ever need the functionality of Standard or Professional versions, you may always upgrade - the core of the product is the same and disk image files are compatible between editions. This places no restrictions on making backups of data partitions, but if you need to restore a system partition to another disk, you have to attach it first to the system with working Windows and restore image.

  • Platform: Win7 x32, Win7 x64, Windows Server, Windows Vista, WinOther, WinVista, WinVista x64

Used in image compression, the haar transform is an alternative to the DCT transformation. This file compute an n*n Haar matrix. (same use as "dctmtx").

  • Platform: Matlab, Scripts

48x48x1 image compression and decompression The Compface DLL can be used to encode/decode X-Face header lines in Visual Basic.. Chestysoft - ASP and ASP.NET Components, ActiveX and OCX Controls.. ASP Components for uploading, image manipulation and resize, graph plotting, file download and zipping, scanning with Twain and more..

  • Platform: WinOther

WIC is stands for Wise lossless Image Compression. It is based on advanced GAP (gradient adjusted predictor), context modeling and arithmetic entropic coding (and some other tricks). I used WIC as my master's degree diploma project.
Lossless compression and decompression of BMP images, High compression rate (slightly better than JPEG 2000), Good compression and decompression speed
WIC - Lossless Image Compressor License - GNU General Public License version 3.0 (GPLv3).

  • Publisher: Wic
  • Date:
  • Platform: WinOther

Trio is an Image/video Analysis tool/framework that utilizes the JMF framework to explore image compression algorithms techniques. The framework utilizes image vision algorithms to make image analysis easier.
TRIO IAS (Image Analysis Studio) License - GNU General Public License (GPL).

  • Publisher: Trio
  • Date:
  • Platform: WinOther

Caesium reduces the size of your picture up to 90%, preserving the original quality. Caesium allows you to save a lot of space and quickly upload your pictures on the web (on sites like Facebook, MySpace etc) saving a lot of time. Also Webmasters for instance need to make sure the images they post on their websites are optimized, to avoid prolonged loading times for their visitors. The software allows you to view instantly the compression results, helping you to decide how much optimization you need. Caesium can set different compression levels to each image, saving a lot of time, ensuring great results! Image compression is underestimated but can have many important uses.

  • Platform: WinOther

Caesium reduces the size of your picture up to 90%, preserving the original quality. Caesium allows you to save a lot of space and quickly upload your pictures on the web (on sites like Facebook, MySpace etc) saving a lot of time. Also Webmasters for instance need to make sure the images they post on their websites are optimized, to avoid prolonged loading times for their visitors. The software allows you to view instantly the compression results, helping you to decide how much optimization you need. Caesium can set different compression levels to each image, saving a lot of time, ensuring great results! Image compression is underestimated but can have many important uses.

  • Platform: WinOther

libPPP is an advanced image compression library. Depending on the content of the image, it uses either PGF (Progressive Graphics File) or PNG (Portable Network Graphics) to compress the image..

  • Platform: Linux, Unix, WinOther

PyramidWorkshop is an image-compression System based upon the scientific work of John Robinson (inventor of BTPC) about image-compression with adaptive linear predictors and is in average more efficient than PNG/JPEG2000..

  • Platform: WinOther

The k-means algorithm is widely used in a number applications like speech processing and image compression. This script implements the algorithm in a simple but general way. It performs four basic steps. 1. Define k arbitrary prototypes from the data samples. 2. Assign each sample to the nearest prototype. 3. Recalculate prototypes as arithmetic means. 4. If a prototype changes, repeat step (2)..

  • Platform: Matlab, Scripts

Common Lisp JPEG Library implements baseline JPEG image compression/decompression routines in ANSI Common Lisp.
Common Lisp JPEG Library License - BSD License.

  • Publisher: Cljl
  • Date:
  • Size: 20 KB
  • Platform: Linux, Mac OS X, WinOther

A simple, lossy RGBA image compression Library.
Not Quite Neutronium License - GNU Library or Lesser General Public License (LGPL).

  • Publisher: Nqn
  • Date:
  • Platform: WinOther

An evolving research prototype algorithm for image compression and decompression. Basically uses optimized context-adaptive arithmetic coding on bit-planesof wavelet-transformed images.
Optimized Arithmetic Coding of Images License - GNU General Public License (GPL).

  • Platform: WinOther

The purpose of this project is to experiment around the directional wavelet transform to use it in a state of the art image compression library..

  • Platform: WinOther

The OpenJPEG library was designed to be an open-source JPEG 2000 codec written in C language. It has been developed in order to promote the use of JPEG 2000, the new still-image compression standard from the Joint Photographic Experts Group (JPEG). In addition to the basic codec, various other features are under development, among them the JP2 and MJ2 (Motion JPEG 2000) file formats, an indexing tool useful for the JPIP protocol, JPWL-tools for error-resilience, a Java-viewer for j2k-images, ...

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  • Platform: WinOther

JPEGsnoop is a free Windows application that examines and decodes the inner details of JPEG and MotionJPEG AVI files. It can also be used to analyze the source of an image to test its authenticity.

Introduction

Every digital photo contains a wealth of hidden information -- JPEGsnoop was written to expose these details to those who are curious.

Not only can one determine the various settings that were used in the digital camera in taking the photo (EXIF metadata, IPTC), but one can also extract information that indicates the quality and nature of the JPEG image compression used by the camera in saving the file.

  • Platform: Win2000, WinOther, WinVista

Image Compression: Freeware | All

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