Kodak i100 Series - Manual (Page 21)

A-61517 October 2004 2-14
Image header
information An image header is associated with every image captured by the
scanner. Following is a list of information available in the image
header.
Image length  size of the image data in bytes.
Image identifier  indicates whether the image is front bi-tonal,
rear bi-tonal, front color, rear color, front grayscale or rear
grayscale.
Resolution  the scanner records the selected scanner image
resolution in dots per inch.
X-axis upper left  pixel horizontal offset to upper left corner of
the image. For more information, see the next section entitled
“Zone processing”.
Y-axis upper left  pixel vertical offset to upper left corner of the
image. For more information, see the next section entitled “Zone
processing”.
Width  the scanner records the number of pixels-per-line in the
image. Width is also referred to as line length.
Length  the scanner records the lines-per-page in the image.
Length is also referred to as page length.
Bits-per-pixel  bits-per-pixel can equal 1 for bi-tonal imaging,
8 for grayscale, 24 for compressed color imaging or 64 for
uncompressed color. Bits-per-pixel is also referred to as pixel
depth.
Compression type  the scanner records the compression
type used. Values for bi-tonal images are: No Compression or
Group IV. The value for grayscale or color images is None or
JPEG.
Polarity  the scanner records image polarity. White pixels can
be indicated as 0 or 1.
Multi-Feed  indicates whether or not a multi-feed was detected
when the image was scanned. This information could be used by
the host to assist operators during error recovery.