## Page Counter & Calculation

ABBYY products are often licensed with a system that allows to process a certain number of pages within a period of time. A 'page' in this terminology isa a DIN A4 pages (210 x 297 mm).

Following rules apply:

• If the page that was processed is smaller than A4, then one A4 page is counted
• If the page that was processed is bigger than A4 (for example A3) the page counter gets reduced as follows:
• A3 = 2 x A4
• A2 = 2 x A3 = 4 x A4 - so minimum 4 pages will be counted
• In reality, the situation is more complicated, because the physical paper size is a standard size, however the size of the digital image depends on the scan/image resolution.
This means that at the end, the important value is the the number of pixels of an image.

## Page Count and Paper Size

• For pages larger than A4 the counter of recognized pages increases by the number
(area of the page)/(area of A4) )
• To calculate the width and height of a page we use the following formula:
int imageWidth = image→GetWidth() / max( 1, image→GetResolution() )
int imageHeight = image→GetHeight() / max( 1, image→GetResolution() ); [image is an Image Object].
• This object represents a single “image plane” (black-and-white, color or preview) of an image in internal format.
• imageWidth and imageHeight are values in inches.
• If you need the size in centimeters you just need to know 1 inch = 2,54 cm.

Format & Pixel

Paper size in inch in mm in twips (1/1440 of inch)
A3 11,69 x 16,54 297 x 420 16838 x 23811
A4 8,27 x 11,69 210 x 297 11909 x 16834
A5 5,83 x 8,27 148 x 210 8391 x 11909
Legal 8,5 x 14 216 x 356 12240 x 20160
Letter 8,5 x 11 216 x 279 12240 x 15840
Executive 7,25 x 10,5 184 x 266 10440 x 15120