Sharpening an image in Java

Print Denso QR Bar Code in Java Sharpening an image

When you apply sharpening to an image, you increase the distinction between areas of color The effect can increase the definition of shapes and lines in an image Using Dreamweaver s editing tools permanently alters the image when the page is saved If you re concerned, the best thing to do is to make a copy of the image and make your adjustments to the copy To sharpen an image, follow these steps: 1 In the Document window, select the image you want to sharpen The Property inspector shows the image properties

2 Click the Sharpen icon (labeled in Figure 3-8) A dialog box appears, warning that your change is made to the original file 3 Click OK in the warning dialog box The Sharpen dialog box appears 4 Use the slider to adjust the sharpness of the image Select the Preview check box to see how the changes affect the image as you move the slider 5 Click OK The image is sharpened, and changes to the image become permanent when you save changes to the page

Dreamweaver CS4 and CS5 include an Edit Image Settings icon that you can use to optimize images in the GIF, PNG, or JPEG formats by reducing the colors or increasing the compression, much as you can do in Photoshop or Fireworks To use this feature, simply select any image in the Dreamweaver workspace and then click the Edit Image Settings icon in the Property inspector (Hint: It looks like a two small gears and is labeled in Figure 3-8) Dreamweaver s editing tools permanently alter the image when the page is saved If you want to protect your original image, make a copy of the image before you make any changes To optimize an image in Dreamweaver, follow these steps: 1 In the Document window, select the image you want to optimize The Property inspector shows the image properties 2 Click the Edit Image Settings icon (labeled in Figure 3-8) The Image Preview dialog box appears with the Options tab selected, as shown in Figure 3-10 3 In the Format drop-down list, select the image format you want If you want don t want to change the format, skip this step You can select the GIF, JPEG, or PNG format 4 If you choose JPEG, use the slider that appears when you click the arrow next to Quality to select the level of compression If you choose GIF or PNG, choose the number of colors desired The image is altered based on the settings you specify

Figure 3-10: You can resize and optimize images in Dreamweaver using the Edit Image Settings option

5 Click the File tab at the top left of the Image Preview dialog box The Image Scale options are displayed 6 Change the height and width by altering the current size settings or by entering a percentage The image size changes based on your settings 7 Click OK to close the dialog and save your settings When you save the page, your changes to the image become permanent You can also change other settings in the Image Preview dialog box, such as transparency settings for the GIF format, much as you would in Photoshop or Fireworks

The Property inspector includes an icon that enables you to easily open an image in Photoshop or Fireworks from within Dreamweaver The Edit icon changes to the icon of the program specified in Dreamweaver s preferences To open an image in your preferred program, simply select the image in

Dreamweaver, click the icon in the Property inspector, and watch your image appear as you ve commanded Adobe has done great work integrating the Photoshop and Fireworks programs into Dreamweaver When you save changes to the image in Fireworks or Photoshop, they re automatically reflected in the version you ve already inserted into a page in Dreamweaver To specify the image editor you want to associate with a file type in Dreamweaver s preferences, follow these instructions: 1 Choose Edit Preferences (Windows) or Dreamweaver Preferences (on a Mac) The Preferences dialog box opens 2 On the left, select the File Types/Editors Category, as shown in Figure 3-11 3 In the Extensions pane, click to select gif Dreamweaver lists a wide variety of file types here, and you can associate any or all of them with your favorite editors To associate image editors with these graphic formats, select the GIF, PNG, and JPEG options one at a time and then continue with these steps 4 In the Editors pane, click to select the editor you want associated with the gif format In the example shown in Figure 3-11, Photoshop is listed already, so you can simply click Photoshop to select it If you want to associate an editor that isn t on this list, such as Fireworks, click the plus (+) sign just above the Editors pane, browse to find the program on your hard drive, and select it to make it appear on the list 5 With the file type and program name selected, click the Make Primary button to associate the editor with the file type The editor specified as Primary is launched automatically when you select an image in Dreamweaver and click the Edit button in the Property inspector 6 Click to select jpeg from the Extensions pane and repeat Steps 4 and 5 You can continue with this process for any or all the other formats listed To add additional file formats to Dreamweaver, click the plus (+) sign over the Extensions pane and type the extension beginning with a dot ()