Projects

GIMP

GIMP is an acronym for GNU Image Manipulation Program. It is a freely distributed program for such tasks as photo retouching, image composition and image authoring. It has many capabilities. It can be used as a simple paint program, an expert quality photo retouching program, an online batch ... [More] processing system, a mass production image renderer, an image format converter, etc. GIMP is expandable and extensible. It is designed to be augmented with plug-ins and extensions to do just about anything. The advanced scripting interface allows everything from the simplest task to the most complex image manipulation procedures to be easily scripted. GIMP is written and developed under X11 on UNIX platforms. But basically the same code also runs on MS Windows and Mac OS X. [Less]

Phatch

Phatch is an user friendly, cross-platform Photo Batch Processor and Exif Renamer with a nice graphical user interface. Phatch handles all popular image formats and can duplicate (sub)folder hierarchies. Phatch can batch resize, rotate, apply shadows, perspective, rounded corners, … and do much ... [More] more actions in minutes instead of hours or days if you do it manually. [Less]

leptonica

Leptonica LibraryThe library supports many operations that are useful onDocument images Natural images Fundamental image processing and image analysis operationsRasterop (aka bitblt) Affine transforms (scaling, translation, rotation, shear) on images of arbitrary pixel depth Binary and grayscale ... [More] morphology, rank order filters, and convolution Seedfill and connected components Image transformations with changes in pixel depth, both at the same scale and with scale change Pixelwise masking, blending, enhancement, arithmetic ops, etc. Ancillary utilitiesI/O for standard image formats (jpg, png, tiff, bmp, pnm, gif, ps) Utilities to handle arrays of image-related data types (e.g., pixa, boxa, pta) Utilities for stacks, generic arrays, queues, heaps, lists; number and string arrays; etc. Examples of some applications enabled and implementedOctcube-based color quantization (w/ and w/out dithering) Modified median cut color quantization (w/ and w/out dithering) Skew determination of text images Segmentation of page images with mixed text and images jbig2 unsupervised classifier Border representations of 1 bit/pixel images and raster conversion for SVG Postscript wrapping (levels 1, 2) of images for device-independent output Connectivity-preserving thinning and thickening of 1 bit/pixel images Search for least-cost paths on binary and grayscale images Barcode reader for 1D barcodes (very early version as of 1.55) Implementation characteristicsEfficient: image data is packed binary (into 32-bit words); operations on 32-bit data whenever possible Simple: small number of data structures; simplest implementations provided that are efficient Consistent: data allocated on the heap with simple ownership rules; function names usually begin with primary data structure (e.g., pix) Robust: all ptr args checked; extensive use of accessors; exit not permitted Tested: thorough regression tests provided for most basic functions; valgrind tested Ansi C: automatically generated prototype header file Portable: endian-independent; builds in linux, osx, mingw, cygwin, windows Nearly thread-safe: no non-const global vars Documentation: large number of in-line comments; web pages for further background Examples: many programs provided to test and show usage of approx. 1600 functions in the library Open Source Projects that use Leptonicaphp (scripting language for dynamic web pages) tesseract (optical character recognition) jbig2enc (encodes multipage binary image documents with jbig2 compression) [Less]

PHP Imagine

Image manipulation library for PHP 5.3 inspired by Python's PIL and other image libraries.

gbmpl

This is a simple and highly readable image processing library written in C++ that supports 256-color gray-scale bitmaps. Features include rotation, convolution, edge detection, frequency-based filtering, blurring techniques, median filtering for noise removal etc. The library is growing very fast and more features will be added continuously.