CDIA Quality Control 2 — Questions and Answers
Question 1: Which metric is most commonly used to measure the accuracy of OCR output during document imaging quality control?
- Character error rate (CER) (Correct answer)
- Frames per second (FPS)
- Compression ratio
- Bit depth accuracy
Correct answer: Character error rate (CER)
Character error rate (CER) measures the percentage of incorrectly recognized characters in OCR output, making it the standard QC accuracy metric.
Question 2: In document imaging QC, what does a 'dropout color' technique accomplish?
- Removes background form lines from scanned images (Correct answer)
- Increases image contrast for dark documents
- Converts grayscale images to bitonal
- Enhances color fidelity in color scans
Correct answer: Removes background form lines from scanned images
Dropout color filtering removes preprinted form lines or backgrounds during scanning, leaving only the handwritten or typed content.
Question 3: What is the purpose of a rescan threshold policy in a document imaging quality program?
- To define the acceptable defect rate before a batch must be rescanned (Correct answer)
- To set the maximum scanner resolution allowed
- To determine when compression algorithms are applied
- To establish index field validation rules
Correct answer: To define the acceptable defect rate before a batch must be rescanned
A rescan threshold policy specifies the defect percentage at which an entire batch is rejected and must be rescanned rather than corrected page by page.
Question 4: Which type of QC sampling is most appropriate when a document imaging project has a very large volume and 100% inspection is not feasible?
- Statistical sampling (Correct answer)
- Convenience sampling
- Purposive sampling
- Census sampling
Correct answer: Statistical sampling
Statistical sampling applies probability theory to select a representative subset, enabling reliable quality estimates without inspecting every document.
Question 5: During image quality inspection, 'skew' refers to which document defect?
- The page is captured at an angle rather than straight (Correct answer)
- The image is compressed too heavily
- The resolution is lower than specified
- The file format is incorrect
Correct answer: The page is captured at an angle rather than straight
Skew occurs when a document is not fed straight through the scanner, resulting in a tilted image that may affect readability and OCR accuracy.
Question 6: What is a key benefit of automated quality control over manual QC in large-scale document imaging projects?
- Consistent application of inspection criteria without human fatigue (Correct answer)
- Lower initial software acquisition costs
- Eliminates the need for any human review
- Reduces the need for scanner calibration
Correct answer: Consistent application of inspection criteria without human fatigue
Automated QC applies the same inspection rules consistently across millions of images, whereas manual reviewers are susceptible to fatigue-induced inconsistency.
Question 7: In the context of CDIA quality control, what does 'indexing accuracy' measure?
- The correctness of metadata assigned to scanned documents (Correct answer)
- The speed at which documents are classified
- The resolution of captured images
- The compression level applied to indexed files
Correct answer: The correctness of metadata assigned to scanned documents
Indexing accuracy measures how correctly document metadata fields—such as document type, date, or ID number—are populated during the imaging process.
CDIA Quality Control 2
Which metric is most commonly used to measure the accuracy of OCR output during document imaging quality control?