Practice Test Geeks(CDIA) Certified Document Imaging Architect Practice Test
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Image Capture & Processing Techniques Flashcards

7 cards from real CDIA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

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  1. What is the primary advantage of using lossless compression (e.g., CCITT Group 4) for black-and-white document images?

    Answer: Exact pixel-for-pixel reconstruction with no data loss

    CCITT Group 4 (G4) is a lossless compression standard that reconstructs the exact original bitmap, which is critical for text and line-art documents where any distortion could impair readability or OCR.

  2. Which scanning artifact appears as a ghost image of the reverse side of a document showing through when scanning thin paper?

    Answer: Bleed-through

    Bleed-through occurs when ink or print from the reverse side of thin paper is partially visible on the scanned image, which can be reduced using background suppression settings.

  3. In a document imaging system, what is the role of an image header file?

    Answer: Containing metadata about the image such as resolution, bit depth, color space, and compression type

    Image header files (e.g., TIFF header) store metadata parameters that describe how the image data is structured, enabling software to correctly interpret and display the image.

  4. What does 'interpolated resolution' mean in scanner specifications?

    Answer: A resolution value achieved by software upsampling beyond the hardware's optical limit

    Interpolated resolution uses software algorithms to insert additional pixels between those actually captured, artificially increasing the reported DPI beyond the scanner's true optical capability.

  5. Which file format is specifically designed for multi-page document imaging and supports multiple compression types within a single file?

    Answer: TIFF

    TIFF (Tagged Image File Format) supports multi-page documents and allows different compression algorithms (G4, LZW, JPEG, uncompressed) to be applied to individual pages within one file.

  6. What is 'zone OCR' and how does it differ from full-page OCR?

    Answer: Zone OCR processes only predefined regions of a document, while full-page OCR recognizes text across the entire page

    Zone OCR restricts recognition to specified areas (zones) of a form or document, improving speed and accuracy by focusing on fields with known locations rather than processing the entire page.

  7. What is the purpose of scanner calibration using a white reference strip?

    Answer: Establishing a baseline white point so the scanner consistently represents pure white accurately

    The white reference strip allows the scanner to normalize its output by defining the maximum reflectance value, ensuring consistent and accurate tonal representation across scans.