HP 4400C HP Scanjet 4400C/5400C Series Scanner Mac - (English) User Manual - Page 124

Glossary, Back to TOC, file size. - abbreviations

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124 Glossary The visibly jagged steps along angled lines or object edges that result from sharp tonal contrasts between pixels. Seen in both black-andwhite images and color images. Sometimes called Jaggies. A technique that smooths transitions between pixels, reducing the jaggedness of curved lines. Reflects the amount of disk space a scan would require if saved to your computer. Approximate Size value does not apply if the output type for the scan is set to text; it only applies to an image representation of the scan. Automatic cropping displays only the item(s) detected on the scanner bed, not any of the surrounding area. Abbreviated ADF, it is an optional accessory that allows you to scan multiple pages. A feature of the scanning software that automatically applies the optimal output resolution to the selection area. For example, output resolution is automatically set to 200 when the True Color output type is selected, and set to 300 for the Black & White Bitmap (raster) output type. Back to TOC b The number of bits used to define the shade or color of each pixel in an image. A 1-bit image is black and white. An 8-bit grayscale image provides 256 shades of gray. An 8-bit color image provides 256 indexed colors and is associated with a specific palette or color table. A 24-bit image provides over 16 million colors. The greater the bit depth, the larger the size of the saved file. See also file size. A type of black-and-white, gray, or color image or picture made up of a matrix of individual pixels or dots. Often referred to as raster, raster bitmap, or raster image. Black & white raster bitmaps contain only black pixels and white pixels, no colors or shades of gray. Each pixel represents one bit. The Black & White Threshold tool lets you change the dividing point for black-and-white pixels in an image that uses the Black & White Bitmap (raster) output type. All pixels below the threshold will be output as black, and all pixels above the threshold will be output as white. A line surrounding the scanned image indicating scanning boundaries. Clicking the image reveals a selection border and handles that are used to define the scanning region.

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124
Glossary
Back to TOC
The visibly jagged steps along angled lines or object edges that result
from sharp tonal contrasts between pixels. Seen in both black-and-
white images and color images. Sometimes called Jaggies.
A technique that smooths transitions between pixels, reducing the
jaggedness of curved lines.
Reflects the amount of disk space a scan would require if saved to
your computer. Approximate Size value does not apply if the output
type for the scan is set to text; it only applies to an image
representation of the scan.
Automatic cropping displays only the item(s) detected on the scanner
bed, not any of the surrounding area.
Abbreviated ADF, it is an optional accessory that allows you to scan
multiple pages.
A feature of the scanning software that automatically applies the
optimal output resolution to the selection area. For example, output
resolution is automatically set to 200 when the True Color output type
is selected, and set to 300 for the Black & White Bitmap (raster) output
type.
b
The number of bits used to define the shade or color of each pixel in an
image. A 1-bit image is black and white. An 8-bit grayscale image
provides 256 shades of gray. An 8-bit color image provides 256
indexed colors and is associated with a specific palette or color table.
A 24-bit image provides over 16 million colors. The greater the bit
depth, the larger the size of the saved file.
See also
file size.
A type of black-and-white, gray, or color image or picture made up of a
matrix of individual pixels or dots. Often referred to as raster, raster
bitmap, or raster image.
Black & white raster bitmaps contain only black pixels and white pixels,
no colors or shades of gray. Each pixel represents one bit.
The Black & White Threshold tool lets you change the dividing point for
black-and-white pixels in an image that uses the Black & White Bitmap
(raster) output type. All pixels below the threshold will be output as
black, and all pixels above the threshold will be output as white.
A line surrounding the scanned image indicating scanning boundaries.
Clicking the image reveals a selection border and handles that are
used to define the scanning region.