CDIA Quality Control 5 — Questions and Answers
Question 1: Which document imaging defect is characterized by dark spots or marks appearing on scanned images that were not present on the original document?
- Speckling or noise (Correct answer)
- Blowout
- Skew
- Banding
Correct answer: Speckling or noise
Speckling or image noise appears as random dark pixels on the scanned image, typically caused by dust on the scanner glass or sensor imperfections.
Question 2: What is the recommended approach when a QC inspector finds that an entire day's scanning production fails to meet quality standards?
- Halt production, identify and fix the root cause, then rescan the entire affected batch (Correct answer)
- Accept the batch but flag it for future review
- Apply image enhancement software to bring all images into compliance
- Re-index the documents to compensate for image quality issues
Correct answer: Halt production, identify and fix the root cause, then rescan the entire affected batch
When a full day's production fails QC, the root cause must be corrected before rescanning to prevent the same defects from recurring.
Question 3: In document imaging, what does 'Acceptable Quality Level' (AQL) define?
- The maximum percentage of defective items considered acceptable in a sampled batch (Correct answer)
- The minimum scanner resolution for legal documents
- The preferred file format for archival storage
- The maximum allowable file size for scanned images
Correct answer: The maximum percentage of defective items considered acceptable in a sampled batch
AQL is the worst acceptable average quality level in a sampling plan; batches with defect rates at or below the AQL are accepted, while those above are rejected.
Question 4: Which post-scan image processing step directly improves OCR accuracy by straightening tilted text lines within an image?
- Deskewing (Correct answer)
- Dithering
- Downsampling
- Despeckling
Correct answer: Deskewing
Deskewing algorithmically rotates a tilted scanned image to align text lines horizontally, which significantly improves OCR recognition accuracy.
Question 5: A CDIA project manager wants to track QC performance trends over time. Which tool is most useful for visualizing whether the defect rate is remaining stable or drifting?
- Statistical process control (SPC) chart (Correct answer)
- Gantt chart
- RACI matrix
- Network diagram
Correct answer: Statistical process control (SPC) chart
SPC charts plot defect rates over time and use control limits to distinguish normal variation from statistically significant quality trends or shifts.
Question 6: What is the significance of maintaining a 'quality control log' throughout a document imaging project?
- It provides an auditable record of defects found, corrective actions taken, and final disposition of batches (Correct answer)
- It tracks the number of documents scanned per hour
- It records scanner serial numbers and firmware versions
- It documents user login times for the imaging system
Correct answer: It provides an auditable record of defects found, corrective actions taken, and final disposition of batches
A QC log creates an audit trail demonstrating that quality standards were monitored and enforced, which is essential for compliance and process improvement.
Question 7: During a document imaging QC review, an inspector notices that 5% of images have headers and footers cut off. What scanner setting most likely caused this issue?
- Incorrect page size or crop settings (Correct answer)
- Excessive brightness setting
- Wrong file format selection
- Insufficient scanner resolution
Correct answer: Incorrect page size or crop settings
Incorrect crop or page size settings cause the scanner to capture a smaller area than the actual document, resulting in clipped margins and missing content.
CDIA Quality Control 5
Which document imaging defect is characterized by dark spots or marks appearing on scanned images that were not present on the original document?