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 arent 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.