CDIA Scanning Technology 2

Question 1

Which scanner type uses a stationary light source and moves the document past it using a roller mechanism?

Accepted Answer

Sheet-fed scanner

Answer

Sheet-fed scanners transport documents past a fixed scan head using rollers, making them ideal for high-volume document processing.

Question 2

What is the primary advantage of using a CIS (Contact Image Sensor) over a CCD in a document scanner?

Accepted Answer

Thinner and lower power consumption

Answer

CIS sensors are much thinner and consume less power than CCD arrays because they don't require an optical reduction system.

Question 3

In document scanning, what does the term 'deskew' refer to?

Accepted Answer

Correcting the angular misalignment of scanned documents

Answer

Deskewing is the automatic or manual correction of document rotation caused by slight misfeeds or placement errors during scanning.

Question 4

Which image file format uses lossless compression and supports transparency, making it suitable for certain scanned documents?

Accepted Answer

PNG

Answer

PNG uses lossless compression and supports transparency, preserving all image data without degradation.

Question 5

What is 'despeckle' as applied to scanned document images?

Accepted Answer

Removal of random noise pixels from the scanned image

Answer

Despeckle filters identify and remove isolated noise pixels (speckles) that typically result from document imperfections or scanner noise.

(CDIA) Certified Document Imaging Architect Practice Test