CHAPTER 32 SCANNING, SIZING, AND TRACING IMAGES This chapter focuses on acquiring and sizing images. It explains how to scan images into Canvas documents, change the size and resolu- tion of images, and auto-trace images to create vector objects from them. It also describes some basics techniques you can use to improve scanned images and photographs imported from Photo CDs. Using scanners to acquire images You can scan images directly into Canvas documents using most types of desktop scanners. Canvas supports scanners that work with Photoshop-compatible plug-in acquire modules. It also lets you use scanning devices that are compatible with the TWAIN standard. Using TWAIN-compatible scanners Scanner manufacturers created the TWAIN interface to standardize interaction between scanners and computer software. Scanners that comply with the TWAIN standard provide a “source manager” file, which translates scanner information into data that Canvas can use. You must install the TWAIN scanner software on your system before you can select the scanner and scan images in Canvas. If you aren’t sure whether a scanner is TWAIN-compatible, consult the scanner documentation or contact the manufacturer. To select a TWAIN scanner 1 Choose Image > Acquire > TWAIN Select Source. In the Select Source dialog box, a scrolling list contains the names of all TWAIN scanners for which Canvas can locate a data source. 2 Select the scanner you want to use and click OK. The Select Source dialog box closes and the scanner you selected becomes the active scanner. To acquire images using a TWAIN scanner 1 When you scan an image, it appears in the active Canvas docu- ment. Open an existing document or choose the New command in the File menu to create a new document. Tip Mac users should refer to the Canvas “ReadMe” file for Mac- intosh availability.
Canvas 8 Help: Scanning, sizing, and tracing images (1 of 18)                                       Page #633