SIP provides image processing, pattern recognition, and computer vision routines for SciLab, a Matlab-like matrix-oriented programming environment. SIP is able to read/write images in almost 90 major formats, including JPEG, PNG, BMP, GIF, FITS, and TIFF. It includes routines for filtering, segmentation, edge detection, morphology, curvature, fractal dimension, distance transforms, multiscale skeletons, and more.
geo-* is a set of tools for geocaching, including tools for accessing the www.geocaching.com, opencaching.com, opencaching.us, and navicache.com websites, tools for geocoding addresses and creating maps, and tools for manipulating Mapopolis place guide data. The focus of these tools is to provide a command line driven environment.
Xpdf is a viewer for Portable Document Format (PDF) files. (These are also sometimes also called 'Acrobat' files, from the name of Adobe's PDF software.) The Xpdf project also includes a PDF text extractor, PDF-to-PostScript converter, and various other utilities. It runs under the X Window System on UNIX, VMS, and OS/2. The non-X components (pdftops, pdftotext, etc.) also run on Win32 systems, and should run on pretty much any system with a decent C++ compiler. Xpdf is designed to be small and efficient. It can use Type 1 and TrueType fonts.
pstoedit converts Postscript(TM) and PDF files to other vector graphic formats so that they can be edited graphically. The formats it can generate include tgif, fig, PDF, gnuplot, DXF, Java Applets, HPGL, WMF, EMF, LaTeX2e, SWF, and many others. pstoedit's framework can be used independantly by other programs.
Jitac is a Java application that converts images into ASCII art by associating blocks of the image with ASCII characters. It supports several image formats (GIF, JPEG, TIFF, and PNG) and some image manipulations that can be performed before the conversion (inversion, grayscale, resize, and gamma correction).
Ansilove/PHP is a set of tools that convert ANSi and artscene-related file formats into PNG images, supporting ANSi (.ANS), PCBOARD (.PCB), BiNARY (.BIN), ADF (.ADF), iDF (.IDF), TUNDRA (.TND), and XBiN (.XB) formats. It includes a command line converter and a library for doing "on the fly" conversions. It creates optimized 4-bit PNG files and supports SAUCE, 80x25, 80x50, Amiga fonts, and iCE colors. It supports 14 MS-DOS charsets (IBM PC, Baltic, Cyrillic, French Canadian, Greek (CP737 and 869), Hebrew, Icelandic, Latin-1, Latin-2, Nordic, Portuguese, Russian, Turkish) as well as unofficial charsets (Armenian, Persian).
ICCLIB implements support for reading and writing of color profile files that conform to the International Color Consortium (ICC) Profile Format Specification, Version 3.4. The ICC Profile Format is a cross-platform device profile format that can be used to translate color data created on one device into another device's native color space. See the profile specification at color.org. In summary ICCLIB provides support for all version 3.4 header elements, Tags, and Tag Types, conversion to/from machine native representation of all data types, user-defined Tags, adding/deleting Tags, Tag type sharing within a file (often used for sharing LUTs amongst intents), reading/writing embedded profiles, a single function for transforming color values through a profile (including support for intents, forward and reverse transforms, gamut lookup or preview lookup), support and code examples for creating all profile types, monochrome, matrix, and Lut, and it loads Tag Types on demand to conserve memory space.
Image Viewer is a multi-frame (animated) image viewer with real-time interactive pan and zoom viewing that uses the GTK+ toolkit and Imlib. It is capable of opening and saving to any image format supported by Imlib. It features screenshots (screen capture), crop, resizing, print, fullscreen display, display on the desktop (root window), animation (creating animated GIFs), color leveling, drawing font/text strings, and editing image header information.