CDIA Document Imaging Systems & Technologies 4 — Questions and Answers
Question 1: In document imaging, what is the purpose of a 'separation sheet' when scanning a batch of documents?
- To protect documents from scanner rollers during transport
- To signal the scanner software to create a new document boundary (Correct answer)
- To calibrate scanner color profiles between batches
- To separate color documents from black-and-white documents
Correct answer: To signal the scanner software to create a new document boundary
Separation sheets (often barcoded) are placed between documents in a batch so the scanning software automatically creates new document boundaries without manual intervention.
Question 2: Which factor most significantly affects the readability of OCR output when scanning text documents?
- The physical size (dimensions) of the original document
- The scanning resolution and image quality of the input scan (Correct answer)
- The color of the paper used in the original document
- The number of pages in the document being scanned
Correct answer: The scanning resolution and image quality of the input scan
OCR accuracy is heavily dependent on the input image quality, particularly resolution — scanning at inadequate DPI or with poor contrast leads to character recognition errors.
Question 3: What is 'bit depth' in the context of scanned document images?
- The physical depth of the scanner's document glass
- The number of bits used to represent the color of each pixel (Correct answer)
- The maximum file size the scanner can produce per scan
- The number of scan passes made to capture one image
Correct answer: The number of bits used to represent the color of each pixel
Bit depth refers to how many bits encode each pixel's color value; higher bit depths allow more shades or colors, affecting image quality and file size.
Question 4: An organization scanning historical documents needs to capture fine details and subtle tonal variations. Which combination of settings is most appropriate?
- 200 DPI, bitonal
- 300 DPI, grayscale
- 600 DPI, grayscale or color (Correct answer)
- 100 DPI, color
Correct answer: 600 DPI, grayscale or color
High-resolution (600 DPI) grayscale or color scanning preserves the fine detail and tonal gradations needed for historical document archiving and analysis.
Question 5: What is the role of a 'document feeder' (ADF) in a production scanning environment?
- To physically feed network data packets to the scanner
- To automatically advance pages through the scanner without manual handling (Correct answer)
- To pre-sort documents by size before scanning
- To apply physical stamps or marks to scanned originals
Correct answer: To automatically advance pages through the scanner without manual handling
An Automatic Document Feeder (ADF) automatically moves a stack of pages through the scanner sequentially, enabling unattended high-volume scanning.
Question 6: Which technology allows document imaging systems to recognize and capture data from handwritten fields on forms?
- Optical Character Recognition (OCR)
- Intelligent Character Recognition (ICR) (Correct answer)
- Optical Mark Recognition (OMR)
- Barcode Recognition
Correct answer: Intelligent Character Recognition (ICR)
Intelligent Character Recognition (ICR) is a specialized form of OCR designed to interpret handwritten characters, though with lower accuracy than machine-printed text recognition.
Question 7: In a distributed document scanning environment, what is the primary function of a 'scan station'?
- A centralized server that performs all image processing
- A networked workstation with an attached scanner used to capture and index documents (Correct answer)
- A cloud service that stores completed document images
- A quality control station where operators review completed scans
Correct answer: A networked workstation with an attached scanner used to capture and index documents
A scan station is a dedicated workstation paired with a scanner that enables operators to capture, perform basic quality checks, and index documents before sending them to a central repository.
CDIA Document Imaging Systems & Technologies 4
In document imaging, what is the purpose of a 'separation sheet' when scanning a batch of documents?