Kodak i800 Series manual Image header information

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.

Image identifier  indicates whether the image is front bi-tonal, rear bi-tonal, front color or rear color.

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 or 24 for color imaging. 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, Group III, Group III 2D or Group IV. The values for grayscale or color images are No Compression or JPEG.

NOTE: No Compression (uncompressed) grayscale or color images will be available on scanners purchased prior to January 2005.

Polarity  the scanner records image polarity. White pixels can be indicated as 0 or 1.

A-61510 January 2005 2-26