CDIA Image Processing 5

Question 1

In document image processing, what is 'zone OCR' used for?

Accepted Answer

Applying OCR only to predefined regions of a document rather than the full page

Answer

Zone OCR restricts text recognition to predefined regions (zones) on a page, improving speed and accuracy for structured forms and templates.

Question 2

Which image artifact is introduced when a scanner's CCD sensor has uneven sensitivity across its width?

Accepted Answer

Vertical streaking or banding

Answer

Uneven CCD sensitivity causes vertical streaks or banding along the scan direction, appearing as light or dark vertical lines in the scanned image.

Question 3

What is the CDIA-recommended minimum resolution for scanning documents intended for long-term archival?

Accepted Answer

300 DPI

Answer

300 DPI is the widely accepted minimum for archival-quality document scanning, balancing image fidelity with manageable file sizes.

Question 4

What is the function of an image 'normalization' step in a document processing pipeline?

Accepted Answer

Standardizing image properties such as resolution, bit depth, and orientation for consistent downstream processing

Answer

Normalization standardizes key image properties across a batch so that subsequent processing steps (OCR, indexing, storage) receive consistent input.

Question 5

In the context of document imaging, what is a 'confidence score' in OCR output?

Accepted Answer

A numeric value indicating how certain the OCR engine is about each recognized character or word

Answer

OCR confidence scores reflect the engine's certainty for each recognized character or word, allowing low-confidence results to be flagged for human review.

(CDIA) Certified Document Imaging Architect Practice Test

(CDIA) Certified Document Imaging Architect Practice Test

CDIA Image Processing 5