Php5 Hosting, Mysql, Java, Jsp, Linux Web Hosting - Servlet, Tomcat, Ssh Blog

3. Installing and Using Scanners 3. Installing and Using Scanners This section explains how to install a scanner using ScannerDrake, and how to use it with SANE and XSane (scanner interface software). We also present a list of other scanner interface software you could use with GNU/Linux. Please note that not all scanners are supported under GNU/Linux. Before buying new hardware, remember to check out Mandriva’s Hardware Database [http://www.mandriva.com/hardware] and the SANE home page [http://www.sane-project.org/] for compatibility issues. 3.1. Configuring your Scanner 3.1.1. ScannerDrake The ScannerDrake wizard helps you install your scanner. Make sure your scanner is powered on and launch ScannerDrake by clicking on the Scanners entry of the Mandriva Linux Control Center’s Hardware section. The program tries to detect your scanner’s manufacturer and model. If it finds one then information about it is displayed in the upper part of the wizard’s main window. Other options are also available (Figure 14.10, Installing your Scanner [170]): Figure 14.10. Installing your Scanner Click on Search for new scanners to autodetect a new scanner you just plugged in. Click on Add a scanner manually if the automatic detection fails and look for the specific model you own by browsing through the list of available models.

2.4. Web Albums 2.4. Web Albums If you want to share your pictures with your family and friends, you can easily create a Web Album of your pictures. Choose Album + Export ..HTML Export from the menu, select the album to export (by default, the current one is selected) and then set the album’s title in the Look section. Customize the album options (picture and thumbnails size, pictures per row, etc.) and click OK to create it: the album is then opened inside Konqueror for you to preview it. You can then upload the album to the web. Figure 14.9. Previewing a Web Album

2.3. EXIF: Digital Camera Photographic Settings 2.3. EXIF: Digital Camera Photographic Settings Most digital cameras produce EXIF (Exchangeable Image File Format) files. EXIF are JPEG files with extra tags containing information about the image such as the date, the camera model, the exposure time, the ISO speed setting, the aperture, etc. Select the picture, choose Image ..Properties from the menu, and select the EXIF tab. Then, select the level of information detail: either Simple (shows the most important settings only) or Full (shows all EXIF information). To add a comment to a picture select it and press the F3 key, then fill your Comments (see Figure 14.8, Adding an EXIF Comment to a Picture [168]). Figure 14.8. Adding an EXIF Comment to a Picture

Image Resizing and Cropping You can also crop an image to a desired size while keeping aspect ratio. Choose Transform ..Aspect Ratio Crop from the menu, drag the square to frame the part of the image you are interested on and select the aspect ratio, orientation, width and height (one follows the other according to the aspect ratio selected). For electronic publication, the usual aspect ratio is 4:3, while for printing the usual aspect ratio is 3:2. Usually a size of 640×480 is enough for e-mailing a photo, while 800×600 is enough for web publishing.

Red-Eye Reduction Red-Eye Reduction Select the pupil of the eye to fix, choose Fix ..Red Eye Reduction from the menu, and then select the aggressive (only part of the eye selected) or mild (more than the eye selected) option to reduce the red-eye flash effect. Repeat for the other eye. Image Resizing and Cropping Multi-megapixel images are excellent for photographic paper print-ups, but are far from adequate for e-mailing or publishing on the web. Choose Transform . Resize from the menu, then select the desired size, either in pixels or in percentage, and whether to keep (recommended) or not aspect ratio.

Sharpen Sharpen Choose Fix . Sharpen from the menu, drag the square to the part of the image to be used as a guide, and use the slider to sharpen the picture.

Brightness, Contrast and Gamma Brightness, Contrast and Gamma Choose Fix + Colors ..Brightness/Contrast/Gamma from the menu and use the sliders to adjust the brightness, contrast and gamma of the picture using the picture copy as a guide.

2.2. Transferring and Manipulating Pictures 2.2.1. Deleting Pictures Create a set of pictures and choose Image ..Move to Trash from the menu. You are not asked for confirmation, the images are moved to the desktop’s Trash im mediately. Keyboard shortcut: Shift -Delete . 2.2.2. Rotating Pictures Create a set of pictures and choose one of the entries (90 , 180 or 270 ) of the Image + Rotate menu. Many digital cameras store rotation information within the image file. In this case you can choose Image ..Auto Rotate/Flip Using Exif Information from the menu to have the picture rotated automatically in the correct direction. All transformations on pictures (such as rotation) are done on the on- disk file. digiKam doesn’t make a backup of the transformed pictures. Also bear in mind that all transformations are, when possible, loss-less. 2.2.3. Touching-Up Pictures Double click on a picture to open the image edit window. Note that all touch-up operations affect the quality of the picture’s on-disk file. Also bear in mind that on-screen rendering is quite different from printing your digital pictures on photographic paper. So if you intend to both print and publish your pictures for online viewing, it might be wise to treat both copies differently from the beginning. Press Ctrl -Z to undo the last transformation operation. However, once you have saved the image, changes cannot be undone.

2.2. Transferring and Manipulating Pictures 2.2. Transferring and Manipulating Pictures Choose the Camera ..Your_Digital_Camera_Model menu and select the photos you want to transfer in the digiKam camera import window (see Figure 14.7, Se lecting Pictures to Transfer [162]) and then click on Download and select the Download Selected option. Then choose (or create) the album to store photos into 2 and click OK : the pictures will be transferred to that album. New in-camera images will be marked with a star on a border. Figure 14.7. Selecting Pictures to Transfer Albums are stored under the /home/user_name/Photos folder.

1.6. Printing 1.5.2. Brushes Figure 14.6. Brushes Dialog This dialog lets you define the type and size of the brushes which apply to most drawing and erasing tools. Click on the active brush section of the tool box, or choose the Dialogs ..BrushesCtrl -Shift -B . menu to open this dialog. Keyboard shortcut: 1.6. Printing GIMP is ideal for web development but printing from GIMP is sometimes tricky. Because of the absence of PANTONE Color Systems support, GIMP might not be ideal for prepress work, although CMYK images are supported. Internally GIMP supports many printers and it is always feasible to filter images through GhostScript or print to file (PostScript). Therefore, you can print images relatively easily. Remember to adjust your resolution to match your printer’s capabilities. A lot of online documentation is available to further your knowledge about printing with GIMP, and we encourage you to explore further. 1.7. Advanced Features 1.7.1. Scripting GIMP offers several scripting interfaces for power users. These may automate almost any GIMP operation and allow external programs to talk to GIMP. You may use some scripts more or less like filters by choosing Script-Fu from the image menu.