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LablGL is an OpenGL interface for Objective Caml. Since it includes support for the Togl widget, you can comfortably use it with LablTk. All of the GL and GLU libraries are available. Read a good book about how to use these. Translating from OpenGL to LablGL is rather straightforward: there is a LablGL function for each OpenGL one. For ease of retrieving, both GL and GLU are cut in smaller modules of related functions. Please see ${PREFIX}/share/doc/ocaml/lablgl/README for further information.

gd is a graphics library. It allows your code to quickly draw images complete with lines, arcs, text, multiple colors, cut and paste from other images, and flood fills, and write out the result as a PNG, GIF or JPEG file. This is particularly useful in World Wide Web applications, where PNG, GIF and JPEG are three of the formats accepted for inline images by most browsers. gd does not provide for every possible desirable graphics operation, but version 2.0 does include most frequently requested features, including both truecolor and palette images, resampling (smooth resizing of truecolor images) and so forth.

The OpenJPEG library is an open-source JPEG 2000 library developed in order to promote the use of JPEG 2000. The main part of the project consists in a JPEG 2000 codec compliant with the Part 1 of the standard (Class-1 Profile-1 compliance). Besides this main codec, OpenJPEG integrates several other modules: - JP2 (JPEG 2000 standard Part 2 - Handling of JP2 boxes and extended multiple component transforms for multispectral and hyperspectral imagery) - MJ2 (JPEG 2000 standard Part 3) - JPWL (JPEG 2000 standard Part 11) - JPIP (JPEG 2000 standard Part 9) - OPJViewer, a GUI viewer for J2K, JP2, JPWL and MJ2 files

The OpenJPEG library is an open-source JPEG 2000 library developed in order to promote the use of JPEG 2000. The main part of the project consists in a JPEG 2000 codec compliant with the Part 1 of the standard (Class-1 Profile-1 compliance). Besides this main codec, OpenJPEG integrates several other modules: - JP2 (JPEG 2000 standard Part 2 - Handling of JP2 boxes and extended multiple component transforms for multispectral and hyperspectral imagery) - MJ2 (JPEG 2000 standard Part 3) - JPWL (JPEG 2000 standard Part 11) - JPIP (JPEG 2000 standard Part 9) - OPJViewer, a GUI viewer for J2K, JP2, JPWL and MJ2 files

PyOpenGL is an interface between the Python programming language and the OpenGL library (and related libraries). The package provides interfaces to: - The OpenGL library itself, which is a three-dimensional graphical rendering interface. For more information, visit http://www.opengl.org. - The GLU library which provides access to routines for doing quadrics, tesselation etc. - The GLUT (GL UTilitity) library from Mark Kilgard, which provides a windowing environment. - The Togl (Tk/OpenGL) widget from Brian Paul and Ben Benderson (an alternative to GLUT which interfaces to Tk). The Python bindings offer some value-added tools in addition to the standard API, including support for fast processing of arrays of coordinates, trackball support, etc.

PyX is a Python package for the creation of encapsulated PostScript figures. It provides both an abstraction of PostScript and a TeX/LaTeX interface. Complex tasks like 2d and 3d plots in publication-ready quality are built out of these primitives. Features * PostScript output for device independent, free scalable figures * seamless TeX/LaTeX integration * full access to PostScript features like paths, linestyles, fill patterns, transformations, clipping, etc. * advanced geometric operations on paths like intersections, transformations, splitting, etc. * sophisticated graph generation: modular design, pluggable axes, axes partitioning based on rational number arithmetics, flexible graph styles, etc.

PyX is a Python package for the creation of encapsulated PostScript figures. It provides both an abstraction of PostScript and a TeX/LaTeX interface. Complex tasks like 2d and 3d plots in publication-ready quality are built out of these primitives. Features * PostScript output for device independent, free scalable figures * seamless TeX/LaTeX integration * full access to PostScript features like paths, linestyles, fill patterns, transformations, clipping, etc. * advanced geometric operations on paths like intersections, transformations, splitting, etc. * sophisticated graph generation: modular design, pluggable axes, axes partitioning based on rational number arithmetics, flexible graph styles, etc.

pngquant is a command-line utility to quantize and dither 32-bit RGBA PNGs down to 8-bit (or smaller) RGBA-palette PNGs, usually with a significant reduction in file size (40-70% smaller than 24-bit PNGs). This unique type of PNG supports full alpha transparency and is compatible with all modern web browsers, and has better fallback in IE6 than 24-bit PNGs. Features: - High-quality palette generation using modernized Median Cut algorithm. - Unique dithering algorithm that adds less noise to images than the standard Floyd-Steinberg. - Easy to integrate with shell scripts, GUIs and server-side software. - Fast mode for processing large numbers of images.

The VCG tool reads a textual and readable specification of a graph and visualizes the graph. If not all positions of nodes are fixed, the tool layouts the graph using several heuristics as reducing the number of crossings, minimizing the size of edges, centering of nodes. The specification language of the VCG tool is nearly compatible to GRL, the language of the edge tool, but contains many extensions. The VCG tool allows folding of dynamically or statically specified regions of the graph. It uses colors and runs on X11. (An older version runs on Sunview).

OCRFeeder is a document layout analysis and optical character recognition system. Given the images it will automatically outline its contents, distinguish between what's graphics and text and perform OCR over the latter. It generates multiple formats being its main one ODT. It features a complete GTK graphical user interface that allows the users to correct any unrecognized characters, defined or correct bounding boxes, set paragraph styles, clean the input images, import PDFs, save and load the project, export everything to multiple formats, etc. OCRFeeder was developed as the project of the Master's Thesis in Computer Science of Joaquim Rocha.