Alexandria is a GNOME application to help manage a book collection. It retrieves book information (including cover pictures) from several online libraries, allows you to search for a book (either by EAN/ISBN, title, authors, or keyword), can import and export data into ONIX, Tellico, and EAN/ISBN-list formats, generates Web pages from your libraries, allows marking your books as loaned, saves data using the YAML format, features an HIG-compliant user interface, shows books in different views that can be filtered or sorted, and handles book rating and notes.
CVL is a library for image and data processing using graphics processing units (GPUs). It is suitable as a base for GPGPU applications. Cvtool is a general-purpose computer vision tool that is based on the CVL library. It works as a filter by reading streams of data from standard input and writing manipulated data and/or analysis results to standard output. Complex analysis tasks can easily be realized in scripts. Many image and video manipulation and analysis functions are included, as well as some advanced computer vision techniques.
Enblend is a postprocessing tool for creating panoramic images. After you align image features using a program like Hugin, there are often photometric problems that lead to ugly seams in the final composite. Enblend blends away these seams using a multiresolution spline. This technique gives good results on both low spatial frequency objects (sky and clouds) and high spatial frequency objects (trees and houses).
Graidle (Graph aid) is a Web application for creating charts. It can be used to generate several types of graphical diagrams. It has classes specialized in generating histograms (also horizontal), spider graphs, pie charts, and line (also filled) charts. Several visual aspects may be customized, such as colors, font dimensions, labels, and axes. The diagrams are generated as true color images using PHP and GD library functions, and can be displayed as the current script output or saved to a file in the PNG format.