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libjpeg

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  Analyzed over 2 years ago

A widely used free library for JPEG image compression.

58K lines of code

0 current contributors

about 13 years since last commit

222 users on Open Hub

Activity Not Available
4.17241
   
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Xvid

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  Analyzed over 2 years ago

Xvid is a MPEG-4 video codec for PC. Its purpose is to compress video in order to allow for faster transmission over computer networks or for more efficient storage on computer disks. Hence, Xvid can somewhat be seen as a ZIP for video. Xvid removes information from video that is not important for ... [More] human perception in order to achieve very high compression rates while still keeping very good visual quality. As an example: uncompressed digital video is huge and takes up about 100 GB HD space per hour at PAL resolution. The same video would require just 500 MB per hour when compressed with Xvid at high quality. So Xvid can compress video at ratios of 200:1 and more. [Less]

68.5K lines of code

0 current contributors

about 5 years since last commit

72 users on Open Hub

Activity Not Available
3.90476
   
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libjpeg-turbo

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  Analyzed over 1 year ago

libjpeg-turbo is a high-speed version of libjpeg for x86 and x86-64 processors which uses SIMD instructions (MMX, SSE2, etc.) to accelerate baseline JPEG compression and decompression. libjpeg-turbo is generally 2-4x as fast as the unmodified version of libjpeg, all else being equal. ... [More] libjpeg-turbo was originally based on libjpeg/SIMD by Miyasaka Masaru, but the TigerVNC and VirtualGL projects made numerous enhancements to the codec, including improved support for Mac OS X, 64-bit support, support for 32-bit and big endian pixel formats (RGBA, ABGR, etc.), accelerated Huffman encoding/decoding, and various bug fixes. The goal was to produce a fully open source codec that could replace the partially closed source TurboJPEG/IPP codec used by VirtualGL and TurboVNC. [Less]

112K lines of code

5 current contributors

over 1 year since last commit

9 users on Open Hub

Activity Not Available
5.0
 
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Licenses: IJG, zlib_libpng

Imebra

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  Analyzed over 1 year ago

Imebra is a multiplatform open source C++ Dicom library. The library can handle Dicom3, NEMA and Jpeg files and supplies both high-level and raw access to the loaded data. The embedded images can be easily decompressed or converted to other color formats or bit depth; writing Dicom Viewers or ... [More] other applications is a quick and easy task. Imebra also supports the Unicode standard (on the fly conversion to/from Dicom charsets) and the delayed-loading of large tags. [Less]

67.1K lines of code

1 current contributors

over 1 year since last commit

3 users on Open Hub

Activity Not Available
5.0
 
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Licenses: commercia..., GPL2

pngquant

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  Analyzed 1 day ago

The pngquant PNG optimisation tool. It converts 24/32-bit PNG files to smaller, paletted PNG8 files with alpha transparency.

6.51K lines of code

6 current contributors

3 days since last commit

3 users on Open Hub

Low Activity
5.0
 
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Licenses: commercia..., gpl3

musepack

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  Analyzed over 2 years ago

Musepack or MPC is an open source lossy audio codec, specifically optimized for transparent compression of stereo audio at bitrates of 160–180 (manual set allows bitrates up to 320) kbit/s. It was formerly known as MPEGplus, MPEG+ or MP+.

329K lines of code

0 current contributors

over 6 years since last commit

2 users on Open Hub

Activity Not Available
5.0
 
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libPGF

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  Analyzed over 1 year ago

libPGF contains an implementation of the Progressive Graphics File (PGF). which is a new image file format, that is based on a discrete, fast wavelet transform with progressive coding features. PGF can be used for lossless and lossy compression.

72.8K lines of code

0 current contributors

over 3 years since last commit

2 users on Open Hub

Activity Not Available
4.5
   
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PNG posterizer

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  Analyzed about 7 hours ago

True-color lossy PNG compressor based on optimal posterization.

1.22K lines of code

0 current contributors

almost 5 years since last commit

1 users on Open Hub

Inactive
0.0
 
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JPEG

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  Analyzed 3 months ago

JPEG implementation configured and build by CMake

82K lines of code

0 current contributors

over 13 years since last commit

1 users on Open Hub

Activity Not Available
5.0
 
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qjpegrest

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  Analyzed over 2 years ago

Graphical application to aid in the restoration of JPEG compressed images, in order to reduce the noise added by the JPEG lossy compression, through the implementation of restoration algorithms and the manual tuning of their parameters.

51.1K lines of code

0 current contributors

over 13 years since last commit

0 users on Open Hub

Activity Not Available
0.0
 
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