Kodak i800 Series User Manual

 

A-61510 January 2005 

2-26 

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.