136 Glossary

TIFF

Tagged Image File Format. A bitmapped file format for images, capable of storing up to 24-bit depth images. TIFF file format is especially appropriate for scanned images and is supported by many programs and computers.

TIFF compressed

Tagged Image File Format, compressed. A bitmapped file format for images, capable of storing up to 24-bit depth images. TIFF file format is recommended for scanned images and is supported by many programs and computers. TIFF compressed files use data compression to reduce the size of the resulting file.

tone

The overall effect produced by the combination of lighting, shade, and color.

toolbar

The area that contains buttons for a program's controls.

transparency adapter

Abbreviated as XPA. An optional accessory used to scan negatives and slides. An XPA connector is plugged into the scanner, and a template is used to position the transparency above the glass.

True Color

An image type that is rendered with 24-bits per pixel per color.

Back to TOC

TWAIN

An industry-standard communications protocol for sending instructions to hardware (such as a scanner) and receiving image data back from them. If you are using a program that supports TWAIN, you can start the HP Precisionscan Pro software directly from that program.

u

uniform scaling

A method of stretching or shrinking an image proportionately in both the vertical and horizontal directions.

USB

Universal Serial Bus. An interface for connecting peripherals, such as scanners, to a computer.

v

vector

A type of image that uses algebraic equations to define the various lines and curves of the image.

w

Web palette

A palette or color table containing red, green, and blue pixel colors that is standard for images embedded in Web pages or HTML files. It consists of 216 entries of all combinations of the values 0, 51, 102,153, 204, and 255.