CDIA Document Imaging Systems & Technologies 3 — Questions and Answers
Question 1: A document management system uses 'zonal OCR.' What distinguishes zonal OCR from full-page OCR?
- Zonal OCR processes only handwritten text
- Zonal OCR extracts data from predefined regions of a form (Correct answer)
- Zonal OCR requires higher scanning resolution
- Zonal OCR converts images to vector graphics
Correct answer: Zonal OCR extracts data from predefined regions of a form
Zonal OCR reads text only from specified areas of a document (e.g., fields on a form), enabling structured data extraction without processing the entire page.
Question 2: Which compression standard is most commonly used for bitonal (black-and-white) document images to achieve the highest compression ratios?
- JPEG 2000
- CCITT Group 4 (G4) (Correct answer)
- LZW
- DEFLATE
Correct answer: CCITT Group 4 (G4)
CCITT Group 4 compression is specifically designed for bitonal images and achieves very high compression ratios, making it the standard for scanned black-and-white documents.
Question 3: What is the main advantage of PDF/A over standard PDF for long-term document archiving?
- PDF/A files are smaller than standard PDFs
- PDF/A prohibits external dependencies and ensures self-contained, reproducible rendering (Correct answer)
- PDF/A supports dynamic content like JavaScript
- PDF/A uses stronger encryption algorithms
Correct answer: PDF/A prohibits external dependencies and ensures self-contained, reproducible rendering
PDF/A is an ISO-standardized subset of PDF that prohibits features like encryption, external references, and embedded multimedia to ensure documents remain fully renderable long-term.
Question 4: In a high-volume production scanning environment, which scanner type is best suited for processing thousands of pages per day?
- Flatbed scanner
- Sheetfed departmental scanner
- Production document scanner (Correct answer)
- Handheld portable scanner
Correct answer: Production document scanner
Production document scanners are built for high-duty-cycle environments, handling thousands to tens of thousands of pages per day with high-speed ADFs and robust mechanisms.
Question 5: What does 'image segmentation' accomplish in an intelligent document processing workflow?
- It divides large files into smaller network packets
- It separates an image into regions such as text blocks, graphics, and tables (Correct answer)
- It splits multi-page PDFs into individual page files
- It partitions the document index into multiple database tables
Correct answer: It separates an image into regions such as text blocks, graphics, and tables
Image segmentation identifies and classifies different regions within a scanned page (text, graphics, tables), enabling more accurate OCR and layout-aware processing.
Question 6: Which characteristic of a digital document defines its 'fidelity' in document imaging?
- The speed at which the document can be retrieved
- How accurately the digital image represents the original physical document (Correct answer)
- The number of metadata fields attached to the document
- The encryption strength applied to the stored file
Correct answer: How accurately the digital image represents the original physical document
Fidelity in document imaging refers to how closely the digital representation matches the original document in terms of appearance, detail, and color accuracy.
Question 7: A scanner's 'interpolated resolution' differs from its optical resolution in that interpolated resolution:
- Is measured in dots per centimeter instead of dots per inch
- Uses software to estimate pixels between actual captured samples (Correct answer)
- Refers only to color bit depth, not spatial resolution
- Is always lower than the scanner's optical resolution
Correct answer: Uses software to estimate pixels between actual captured samples
Interpolated resolution is software-generated by adding estimated pixels between real optical samples, which increases reported DPI but does not add true image detail.
CDIA Document Imaging Systems & Technologies 3
A document management system uses 'zonal OCR.' What distinguishes zonal OCR from full-page OCR?