Create FreeBSD Desktop Systems (4)

Second, image processing software

FreeBSD graphics image processing software is rich, such as image processing Tools gimp, drawing tools xpaint, image browsing tools, electronic eye ee,compupic, and so on, these tools can be directly installed from ports.

1. Image processing Tool--gimp

The most famous of the image processing tools under FreeBSD is the GIMP. GIMP is an acronym for the GNU Image Processor (GNU Images manipulation Program), a completely free free software package for all kinds of artistic processing of images. GIMP is very powerful, it can be used as a simple drawing program, can also be used as a high-quality image processing software, it also has image format conversion and other functions. GIMP is highly scalable and supports advanced scripting interfaces with plug-in parameters that can be easily described for each task, whether it is the simplest of tasks, or the complex image processing process. Because its function is quite powerful, because GIMP is known as FreeBSD under the magic weapon of image processing, is the free Photoshop.

The GIMP interface is much simpler than Photoshop and starts with a toolbar that looks similar to Photoshop. A series of menu options pop up as soon as we open the image file and right-click the image, as shown in Figure 14.

Figure 14

GIMP mainly has the following characteristics:

A full set of drawing tools, including brushes, pencils, spray guns and so on.

Flat-panel memory management, the size of the image that can be processed is limited only by disk free space.

Support a variety of common graphic formats, including GIF, JPG, JPG, XPM, TIFF, TGA, MPEG, PS, PDF, PCX, BMP, etc., and can be a variety of graphics format conversion.

The process database allows the internal GIMP function to be called from an external program.

Unlimited Undo/redo (limited by disk space only).

Support for deformation tools such as rotation, scaling, cropping, and inversion.

has a variety of selection tools, such as rectangles, ellipses, freedom, blur, curves, and intelligence.

The plugin feature allows users to arbitrarily add file formats and new effect filters, and there are more than hundreds of free plug-ins available to download on the web, thus extending the functionality of GIMP indefinitely.

In addition, GIMP, the Web picture design also has good support, but also provides a grab tool-screenshot, the effect is very good, this article all the pictures are intercepted by the tool. For more about the features and usage of GIMP, please refer to the book "The Authority Guide to GIMP" issued by the machinery industry press.

2. Drawing Tools--xpaint

Xpaint is a X11 color image editing Tool, its function is similar to the "Brush" program in Windows, it supports editing various image formats, including PPM, XBM, BMP, JPG, TIFF, etc. The Xpaint user interface is functionally divided into two areas, one is the tool area to select the action to be performed by the current painting, and the other is the plot area, which is used to create/modify images. Each drawing window allows you to have its own palette and set of patterns, as shown in Figure 15.

Figure 15

Xpaint is dependent on the display mode, which will adjust the image to the current display mode when storing the image (for example, open a 32-bit true-color image in a 16-bit color environment and save it in 16-bit color when you save the disk).

3. Image browsing Tools

Like windows, FreeBSD image browsing tools are also very rich, the following introduction of several more commonly used software.

(1) The Eye of Gnome

The Gnome Eye is a software that browses image files in the Gnome window environment, distributed along with the GNOME package. When GNOME is installed correctly, the Gnome shortcut can be found in the main menu of GNOME. "Gnome Eye" can browse bmp, TIF, GIF, XPM and other formats of image files, using the method is very simple. Users can choose to load multiple files at a time and can map images. The Gnome eye also supports some basic editing of the image, such as color control, zoom, zoom, and rotate, and the main software interface is shown in Figure 16.

Figure 16

(2) Gqview

Gqview is also a software that browses images in the Gnome window environment. Its function and use method is similar with electronic eye, just more intuitive. Gqview user interface to the left is a menu bar, toolbar, directory list and image file list, the right is the image browsing area, the image file list in the selection of files, you can browse the right area, this is the same as the ACDSee, as shown in Figure 17.

Figure 17

Gqview's own image editing function is relatively weak, but it supports the call of external image processing software, in addition to GIMP, electronic eyes and other software, users can also be based on the need for Gqview and other image editing software.