Three level offset indexing
When using three level offset indexing, the image address assigned to each document is defined as follows:
•Field D (Level 2) defined as having a field length greater than 0.
•Field C (Level 3) defined as having a field length greater than 0.
For example, if you scan a book with two sections (Section 1 contains 2 chapters, each having 40 pages; Section 2 contains only 1 chapter, having 120 pages) and the image address has been defined as:
•Field D has 2 characters
•Field C has 1 characters
•Field B has 0 character
•Field A has 0 characters
Section1 | Image Address 1.00 |
| Section 2 | Image Address 2.00 | ||||||||||||||||||
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| Chapter 1 |
| Image Address 1.01 |
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| Image Address 2.01 | ||||||||||||||
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| Image Address 2.01 | ||
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| Chapter 2 |
| Image Address 1.02 |
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The header page for Section 1 is assigned image address 1.00. The header page for Chapter 1 of the section is assigned image address
1.01.The remaining pages of Chapter 1 are also assigned image
address 1.01. The header page for Chapter 2 of the section is assigned image address 1.02. The remaining pages of Chapter 2 are also assigned image address 1.02.
The header page for Section 2 is assigned image address 2.00. The header page for Chapter 1 of the section is assigned image address
2.01.The remaining pages of Chapter 1 are also assigned image address 2.01.
Either one of the section header or chapter header pages may later be located and retrieved using its unique image address. Pages within a chapter may later be located and retrieved by first finding the chapter header and then manually scrolling through the remaining pages of the chapter.