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flPhoto is a basic image management and display program based on the FLTK toolkit and is provided under the terms of the GNU General Public License. It can read, write, and display digital camera EXIF information and supports the following image file formats: BMP, CRW, JPEG, PhotoCD, PNG flPhoto organizes image files into albums which can be: Printed, Viewed as a slideshow, Exported to web pages Images can be imported individually, by directory, or from digital cameras using the gPhoto library. Image files can be transformed and touched-up; the following image operations are available: Crop, Rotate, Scale, Auto-Correct, Adjust Brightness and Contrast, Remove Red Eye, Sharpen, Blur

G'MIC stands for GREYC's Magic Image Converter. This project aims to: * Define a minimal but powerful script language (G'MIC) dedicated to the design of image processing pipelines. * Provide an interpreter of this language (in C++), distributed as an open-source module/library embeddable in third-party applications. * Propose two binary tools embedding this interpreter : o The command-line executable gmic to use the G'MIC framework from a shell. o The interactive plug-in gmic_gimp to bring G'MIC capabilities to the image retouching software GIMP.

[ edited excerpt from developer's www site ] During image processing operations such as scanning and scaling, images tend to get blurry. The blurred impression of these images is due to the fact that image pixels are averaged with their neighbors. Blurred images don't have sharp boundaries and look as though they have been taken with an unfocussed camera. Refocus is a GIMP plug-in to "refocus" the image, using a technique called FIR Wiener filtering. The traditional technique for sharpening images is to use unsharp masking. Refocus generally produces better results than unsharp masking. The plugin can be found under "Filters > Enhance > Refocus"

exrtools is a set of simple command-line utilities for manipulating with high dynamic range images in OpenEXR format. OpenEXR is a high dynamic-range (HDR) image file format developed by Industrial Light & Magic for use in computer imaging applications. exrtools was developed to help experiment with batch processing of HDR images for tone mapping. Each application is small and reasonably self-contained such that the source code may be of most value to others. exrtools currently only works with RGBA OpenEXR files. As well, the code assumes that the EXR files and PNG files all use sRGB primaries and gamma function.

The GIMP is designed to provide an intuitive graphical interface to a variety of image editing operations. Here is a list of the GIMP's major features: Image editing ------------- * Selection tools including rectangle, ellipse, free, fuzzy, bezier and intelligent. * Transformation tools including rotate, scale, shear and flip. * Painting tools including bucket, brush, airbrush, clone, convolve, blend and text. * Effects filters (such as blur, edge detect). * Channel & color operations (such as add, composite, decompose). * Plug-ins which allow for the easy addition of new file formats and new effect filters. * Multiple undo/redo.

libdmtx - software for reading and writing Data Matrix barcodes libdmtx is open source software for reading and writing Data Matrix barcodes on Linux, Unix, OS X, Windows, and certain mobile devices. At its core libdmtx is a shared library, allowing C/C++ programs to use its capabilities without restrictions or overhead. Data Matrix barcodes are two-dimensional symbols that hold a dense pattern of data with built-in error correction. The Data Matrix symbology (sometimes casually referred to as "DataMatrix") was invented and released into the public domain by RVSI Acuity CiMatrix.

LibRaw is a library for reading RAW files obtained from digital photo cameras (CRW/CR2, NEF, RAF, DNG, and others). LibRaw is based on the source codes of the dcraw utility, where part of drawbacks have already been eliminated and part will be fixed in future. The users of the library are provided with API to be built into their software programs. LibRaw is intended to be used in any software that involves RAW file processing for a variety of purposes: RAW converters, data analyzers, panorama stitchers, noise suppressors, etc.

VIPS's a free image processing system. It aims to be about half way between Excel and Photoshop. It's obviously much smaller than these two, but it's not a toy either (about 200k lines of code). It's very bad at photo retouching, but it's great (much better than programs like Photoshop, I think) at all the other things you use photoshop for. It's particularly good with large images (ie. images larger than the amount of RAM in your machine), and for working with colour.

Xournal is an application for notetaking, sketching, keeping a journal using a stylus. It is similar to Microsoft Windows Journal or to other alternatives such as Jarnal, Gournal, and NoteLab. Xournal aims to provide superior graphical quality (subpixel resolution) and overall functionality; however it lacks the collaborative features of Jarnal. Since Xournal is still in its early development stages, it may not be fully stable, and some features have not been implemented yet. Xournal supports annotation of PDF files through the Poppler library; PDF files, much like paper styles, are loaded as an immutable background image.

Luminance HDR is an open source graphical user interface application that aims to provide a complete workflow for HDR image processing. Supported features: * Create an HDR file from a set of images (formats: JPEG, TIFF 8-bit and 16-bit, RAW) of the same scene taken at different exposure settings * Rotate, resize, and crop HDR images * Tonemap HDR images * Copy EXIF data between sets of images Supported HDR formats (with file extensions): * OpenEXR (.exr) * Radiance RGBE (.hdr) * TIFF formats: 16-bit, 32-bit (float) and LogLuv (.tiff) * PFS native format (.pfs) * Raw image formats (various) Supported LDR formats: JPEG, PNG, PPM, PBM, TIFF (8-bit).