Projects

libpng

libpng is the official PNG reference library. It supports almost all PNG features, is extensible, and has been extensively tested for over 17 years. libpng is available as ANSI C source code and requires zlib 1.0.4 or later (1.2.3 or 1.1.4 recommended due to potential security vulnerabilities in ... [More] earlier versions). In addition to the main library sources, libpng includes the rpng, rpng2 and wpng demo programs, the pngminus demo program, a subset of Willem van Schaik's PngSuite test images, and Willem's VisualPng demo program. Configure, CMake, Visualc projects, and various makefiles are included for building libpng. Libpng is under the libpng license. [Less]

GD

GD is an open source code library for the dynamic creation of images by programmers. GD creates PNG, JPEG or GIF, among other formats. GD is commonly used to generate charts, graphics, thumbnails, and most anything else, on the fly. While not restricted to use on the web, the most common applications of GD involve web site development.

GEGL

GEGL (Generic Graphics Library) is a graph based image processing framework. GEGLs original design was made to scratch GIMPs itches for a new compositing and processing core. This core is being designed to have minimal dependencies. and a simple well defined API. The GEGL software is part of ... [More] the GEGL Project: https://www.ohloh.net/p/gegl-project [Less]

Imager (perl)

Imager is a toolkit for manipulating images from perl.

imagej

Image Enhancement: Supports smoothing, sharpening, edge detection, median filtering and thresholding on both 8-bit grayscale and RGB color images. Interactively adjust brightness and contrast of 8, 16 and 32-bit images. Geometric Operations: Crop, scale, resize and rotate. Flip ... [More] vertically or horizontally. Analysis: Measure area, mean, standard deviation, min and max of selection or entire image. Measure lengths and angles. Use real world measurement units such as millimeters. Calibrate using density standards. Generate histograms and profile plots. Editing: Cut, copy or paste images or selections. Paste using AND, OR, XOR or "Blend" modes. Add text, arrows, rectangles, ellipses or polygons to images. Color Processing: Split a 32-bit color image into RGB or HSV compo [Less]

SageThumbs

SageThumbs is a powerful shell extension allowing to preview enormous amount of image formats directly in Windows Explorer by using Pierre-e Gougelet's GFL library (XnView's author).

WideImage

WideImage is a PHP5 image manipulation library with a fluent interface that supports chaining operations and abstracts the normal GD2 operations from the interface into a more coherent and extendable framework.

Asido: PHP Image Processing Solution

Asido is a PHP (PHP4/PHP5) image processing solution, with pluggabledrivers(adapters) for virtually any environment. A lot of PHP developers (both on the PHP4 and PHP5 side) need image transformation operations for various tasks, the most mundane of which are the proportional resizing and ... [More] watermarking. Asido offers such solution: uniform API for image transformations that works with various environments (GD, ImageMagick, MagickWand, etc). Asido is open-source and its LGPL license allows you to place the class in your proprietary PHP projects. Asido offers the following functionality: resize images, watermark images, rotate imates, copy images, crop images, grayscale images, convert images, etc. [Less]

Netpbm

Netpbm is a toolkit for manipulation of graphic images, including conversion of images between a variety of different formats. There are over 300 separate tools in the package including converters for about 100 graphics formats.

optipng

OptiPNG is a PNG optimizer that recompresses image files to a smaller size, without losing any information. This program also converts external formats (BMP, GIF, PNM and TIFF) to optimized PNG, and performs PNG integrity checks and corrections.