Polaroid BLL Generator manual Bitmaps and Objects, Graphics, Text

Bitmaps and Objects

Images can contain bitmaps, objects, or both. Bitmaps consist of dots or pixels. Objects consist of mathematical descriptions of a shape, such as a polygon or line. Applications that create bitmaps are often called “paint” programs and those that create objects are often called “draw” or “illustration” programs. Both graphics and text can be bitmaps or objects.

Graphics

At high-resolution, bitmaps look the same if the film recorder resolution exceeds the resolution of the bitmap but objects get sharper.

You can usually tell bitmaps from objects by watching how the image is created when it is first displayed on the screen. Bitmaps are usually drawn on the screen from top to bottom in one chunk. Objects are assembled in pieces.

Text

Text can be a bitmap or an object, just as graphics can. Text that is part of a bitmapped graphic with lower than film recorder resolution remains jagged at high-resolution. However, text that is an object can get sharper when output at high-resolution.

Text created with ATM (Adobe Type Manager) or TrueType fonts is sharp at any size and resolution. In addition, ATM and TrueType fonts will look the same on screen as on the slides printed by WinRascol.

Important Concepts 33