Free visual kei software for linux

Visual REGEXP project can easily design and debug regular expressions by providing a graphical visualization of the expression and its matches on a sample of your choice.
Version restrictions:
- some regexp can consume a lot of CPU time. This seems to be caused by the use of -all, -inline and -indices flags together.
- when a subexpression is not matched (empty match), the last character of the previous match are coloured. This is due to a problem in Tcl (bug submitted to Scriptics).
Enhancements:
- new version done by Martin Lemburg. Many thanks, Martin.
- it is now a tcl 8.5a4 starpack
- GUI layout changed to be based on a paned window
- GUI code looks different, to be more ergonomic
- the informational labels (replacements & matches) are now sunken
- there are now additional the "first" and "last" navigation buttons
- there is a new option to navigate through matches or matches and submatches
- the displayed count of matches is changed to display the current and the count of matches used for navigation (probably changes, if the new navigation option is changed)
- the replace widget is disabled on startup
- the tcl console is added to the help menu
- the key bindings inside the regexp text widget changed a bit to allow for expanded regexp (-expanded or (?x)) to contain tabs and newlines. Tabs are created with Control-Tab and newlines with Control-Return. Additional with Control-C|V|X (not c|v|x) it is possible to use the clipboard like with Control|Shift-Insert, Shift-Delete.

Visual Oberon is a GUI library written in Oberon2.
VisualOberon (or short VO) is a collection of classes written in the programming language Oberon-2. The classes are designed to let application developer easyliy build graphical user interfaces for rograms written in Oberon-2. _VO_ is distributed nder the GNU library icense.
VisualOberon is _not_ a programming language. While it sounds like he Oberon version of VisualBasic, it is not an integrated developement nvirinment with build in text editor, builder and that stuff. It is urrently just a library. Nevertheless it can be the basis for such integrated environment.
Enhancements:
- Some prototype of a controller class for mapping input to object functionality.
- Improved Edit control.
- Improved file open dialog.
- Menu navigation via keyboard.
- More usage of STRING.
- Improved drawing including support for offscreen drawing.
- Improved Curses version, now works also on black white terminals - but still not perfect.
- Improved image loading.
- Bugfixes, bugfixes, bugfixes.
- Improvement of VGD. Added more VGD handler.
- Support for Xft version 2 as found in newer distributions.
- Packages for Windows and Carbon modules, needed for developing applications for Window sand Mac OS X, used by the coresponding driver module sin VisualOberon.

Visual Turing Machine project is a program that lets you create Turing machines with a point and click interface instead of using esoteric languages.
You can pack your complex machines into small boxes, and then reuse them as part of a bigger machine. VTM also features an infinite length tape.
Enhancements:
- New features include an n-ary set of symbols, multiple windows (MDI), a huge workspace (10000x10000 pixels) without a memory issue, the ability to edit your own machines, the ability to execute machines n times (where n is undefined), the ability to use expressions (like n+5) to execute machines, the ability to execute machines at desired speeds, statistics to see how many instructions were executed and how much tape was "used", and an easy wasy to translate the program to other languages.

Text::VisualWidth is a Perl module that provides functions to treat half-width and full-width characters and display correct size of text in one line on terminals and mobile phones. You can know the visual width of any text and truncate text by the visual width.

Now this module support EUC-JP and UTF-8 and tested only with Japanese.

Visual Automata Simulator is a tool for simulating, visualizing and transforming finite state automata and Turing Machines.
Visual Automata Simulator is a DFA, NFA and TM simulator.
Main features:
- Creates, simulates and transforms DFA and NFA machines
- Creates and simulates TM
- Batch tests for TM: useful features to test a bunch of files quickly!
- Easy-to-use GUI interface (multi-documents)
- Smart links between objects
- Machines can be drawn using the mouse - and resized at any time
- Multiple machines can be created in a single document
- Multiple documents can be opened at the same time
- Documents can be saved and reloaded from disk
- Debug mode to see exactly how the machine is working (each step has a different color)
- MacOS X GUI compliant.
Enhancements:
- FA and TM machine can be exported to EPS file
- integrated update manager
- preferences: can specify the character used to define an epsilon transition
- fixed a bug where epsilon transition were not considered when starting directly from a state instead of following a non-epsilon transition.

Vector Visuals provides an easy-to-use, object-based API for creating and manipulating Java2D-rendered shapes and images. The project features object embedding, dynamic connectors, and multithreaded task support.
Vector Visuals has been downloaded thousands of times, and is already in use in a variety of applications. A few that we know of are a business ontology viewer, a particle simulator, and a childrens e-book builder.
Enhancements:
- This release of is a combination of bugfixes and new features.
- Persistence delegates were added for all of the Vector Visuals objects.
- The examples were moved out into their own source folder.
- Additionally, the entire product is now licensed under a permissive "New BSD"-style license.

Vshnu project is a visual shell for Linux/Unix finally done right. Best used as an optional color visual mode to a regular command line shell, vshnu is handy for powerful directory listing and navigation, Unix command assembly, special actions on file types, and fileset handling. Written in Perl for portability and high configurability, it also provides the advantages of a Perl interpreter as part of your Unix shell environment.
Skilled Unix users know the importance of the shell or command line interface (CLI). (Old-time Unix users didnt even have a choice about it). While having more of a learning curve than a graphical user interface (GUI), it permits powerful, creative, complex operations to be specified quickly and reliably. For anyone but the superficial user, learning a CLI is an investment that pays off rewardingly. Command line environments are still readily usable over low-bandwidth network connections and restricted displays.
However, when one is concerned about file manipulation and management (which is a very good thing to be concerned about as the basis of your interface, as most GUIs would rather lead you to forget), a CLI can be a frustratingly terse interface to the filesystem. Too many tedious ls(1) and cd(1) commands are needed to keep watch on whats there. A GUI file manager can address this problem, but then youre in mouseland and have lost the advantages of the CLI.
Enter the visual shells. Not a new idea, visual shells can operate within an entire terminal or console screen. File listings are displayed for your constant reference. Common commands and operations can typically be performed in fewer keystrokes in a visual interface. As the vi(1) visual editor evolved from the ed(1) and ex(1) command line editors, visual shells have attempted to evolve from command line shells. Some visual shells have promoted themselves as simpler menu-oriented interfaces suitable for novices, while others emphasize more expert functionality.
Nonetheless, visual shells have never really caught on, except some in certain circles such as Emacs "dired" mode and the Midnight Commander program. I believe this is because they have been designed as largely self-contained applications with limited configurability. Using a visual shell has required a significant jump into a new base interface tool, and few are so compelling or standard to make that worthwhile.
Hence the design of vshnu, the New Visual Shell. In the Unix tradition, it works with things already there and fills a empty niche. When incorporating it into your Unix environment, you keep your command line shell, your editor, your pager, and access to all your tools, tricks and know-how.
Vshnu can operate as an optional supplemental visual mode to your command line shell. You switch between command line and visual mode easily as you wish. Your interface bandwidth and power for Unix operations is on a higher plane and life gets sweeter. In addition, being written in Perl, it ports to any Unix system without compilation, gives you the advantages of a Perl interpreter running readily at hand, and permits visual command customizability limited only by your creativity, yet doesnt require knowledge of Perl for normal usage. Vshnu is a tool thats worthwhile even if only used occasionally as an interactive, pageable, color ls(1), yet still pays back, with interest, whatever more you put into using it.
Main features:
- Extensive options for sorting and listing a directorys files
- Multiple methods for navigating directories and selecting files
- Directory locations may be marked for quick returns
- Lists command outputs alongside files, including a builtin "ls -l"
- Directory and file histories
- In color terminals, uses color for more informative displays, including file coloring by type via the standard LS_COLORS environment variable
- Expands and collapses chosen subdirectories
- Option to display Internet (Swatch) time
- Multiple methods for choosing and operating on individual or arbitrary sets of files
- Key commands and file actions are 100% configurable, extensible, self-documenting and arbitrarily complex, including multiple choice options
- File actions are customizable by file name/type/contents/etc, with common actions configured by default
- Online help descriptions of key commands and file actions, by mode and by command
- Separate per-site and per-user configurability
- Adjustable file column displays
- Adapts to changing screen sizes (but works best on screens 80 characters wide or more)
- Current directory and environment is propogated between vshnu and the parent command line shell
- Multiple interfaces for shell commands and Perl statements
- Perl statements may be {{embedded}} within shell commands
- A Perl "where" clause to subset the displayed files
- Can use the CD_PATH environment variable as a search path for files and directories
- Recognizes the following standard environment variables: DISPLAY, EDITOR, HOME, HOST, LS_COLORS, MAIL, PAGER, PATH, PERL_RL, SHELL and VISUAL

Visual difference metrics can predict whether differences between two images are visible to the human observer or not. Such metrics are used for testing either visibility of information (whether we can see important visual information) or visibility of noise (to make sure we do not see any distortions in images, e.g. due to lossy compression).

The image below shows how two input images, a reference image (upper left) and a distorted image (lower left), are processed with the VDP to produce a probability of detection map (right). Such probability of detection map tells how likely we will notice a difference between two images for each part of an image.

Red color denotes high probability, green - low probability. Red color is mostly present in the areas where there is a snow covered path. Because of smooth texture of the snow, there is not much visual masking and distortions are easily visible.

Although there are dozens of visible difference metrics that serve a similar purpose, our Visual Difference Predictor for HDR images (HDR-VDP) has two unique advantages: firstly, our metric works with a full range of luminance values that can be meet in a real word (HDR images), and secondly, we offer a complete source code for free.

High Dynamic Range Visible Difference Predictor (HDR-VDP) can work within the complete range of luminance the human eye can see. An input to our metric is a high dynamic range (HDR) image, or an ordinary 8-bits-per-color image, converted to the actual luminance values. The proposed metric takes into account the aspects of high contrast vision, like scattering of the light in the optics (OTF), nonlinear response to light for the full range of luminance, and local adaptation.