CDIA Document Imaging Systems & Technologies 2 — Questions and Answers
Question 1: Which scanner specification most directly determines the ability to capture fine text details in scanned documents?
- Scanning speed (pages per minute)
- Optical resolution (dots per inch) (Correct answer)
- Duty cycle (pages per day)
- Hopper capacity (sheet count)
Correct answer: Optical resolution (dots per inch)
Optical resolution, measured in dots per inch (DPI), determines how finely a scanner can capture detail, directly affecting the legibility of small text.
Question 2: In a document imaging system, what is the primary purpose of an image enhancement step during capture?
- To compress file sizes before storage
- To correct skew, remove speckles, and improve legibility (Correct answer)
- To index document metadata automatically
- To route documents to correct workflow queues
Correct answer: To correct skew, remove speckles, and improve legibility
Image enhancement during capture corrects common scanning artifacts like skew, noise, and poor contrast to improve downstream OCR accuracy and readability.
Question 3: A company needs to scan documents at 300 DPI in grayscale. Compared to 300 DPI bitonal (black-and-white), the grayscale files will be approximately how much larger?
- 2 times larger
- 4 times larger
- 8 times larger (Correct answer)
- No difference in size
Correct answer: 8 times larger
Bitonal images use 1 bit per pixel, while grayscale uses 8 bits per pixel, making uncompressed grayscale files approximately 8 times larger at the same resolution.
Question 4: Which technology enables a scanner to automatically detect whether a page is color, grayscale, or black-and-white and adjust settings accordingly?
- Automatic document feeder (ADF)
- Automatic color detection (ACD) (Correct answer)
- Dynamic threshold imaging
- Simplex scanning mode
Correct answer: Automatic color detection (ACD)
Automatic color detection analyzes each scanned page and applies the appropriate color mode, optimizing file size and quality without manual intervention.
Question 5: What does the term 'duplex scanning' refer to in document imaging?
- Scanning two separate documents simultaneously
- Scanning both sides of a page in a single pass (Correct answer)
- Using two scanners in parallel for redundancy
- Creating two output formats from one scan
Correct answer: Scanning both sides of a page in a single pass
Duplex scanning captures both the front and back of a page simultaneously or in rapid succession, improving throughput for two-sided documents.
Question 6: In the context of document imaging, what is 'blank page detection' primarily used for?
- Identifying pages with no text for manual review
- Automatically removing empty pages from duplex scans (Correct answer)
- Flagging documents missing required signatures
- Detecting pages that failed to scan correctly
Correct answer: Automatically removing empty pages from duplex scans
Blank page detection automatically identifies and removes empty pages that result from duplex scanning of one-sided documents, reducing unnecessary storage.
Question 7: Which file format is specifically designed to store multiple pages of a scanned document in a single file while supporting lossless compression?
- JPEG
- PNG
- TIFF (Correct answer)
- BMP
Correct answer: TIFF
TIFF (Tagged Image File Format) supports multi-page documents and lossless compression options like LZW and CCITT Group 4, making it a standard for archival document imaging.
CDIA Document Imaging Systems & Technologies 2
Which scanner specification most directly determines the ability to capture fine text details in scanned documents?