18 Questions
What is the maximum compression ratio achieved by run-length encoding in the best case?
64:1
What is the result of run-length encoding in the worst case scenario?
An expansion of 127:128
What type of image data is CCITT encoding suitable for?
Monochrome 1-bit per pixel image data
What organization defined the CCITT encoding standard?
International Telecommunications Union (ITU)
How does CCITT encoding handle encoded or decoded data that does not end at a byte boundary?
By inserting unused bits at the end of each scan line
Where can the detailed description of the CCITT encoding algorithm be found?
ITU Recommendations T.4 and T.6
What is the primary technique used in JPEG encoding?
Discrete Cosine Transform
What is the benefit of using DCT in JPEG encoding?
It is designed specifically for compression of sampled continuous-tone images
How many colour components can each image sample consist of when using JPEG encoding?
One, two, three, or four
How are the colour component values stored in JPEG encoding?
Each component value occupies a byte
What is the role of the encoder in JPEG encoding?
To control the algorithm and the information loss
Where can the parameter values for DCTDecode be obtained from?
Either from the encoded data or the filter parameter dictionary
What is the primary purpose of the EncodedByteAlign parameter in CCITTFaxDecode?
To ensure byte alignment of each encoded scan line
What happens when a filter reaches EOD during decoding?
It skips to the next byte boundary following the encoded data
What is the primary factor affecting the compression ratio of CCITT encoding?
The length of the scan line
What is the minimum compression ratio achievable with CCITT encoding?
75:1
What is the purpose of the optional parameters in the CCITTFaxDecode filter?
To customize the decoding process for specific data
What is the primary advantage of using the CCITTFaxDecode filter?
It is compatible with the PDF convention for sampled image data
This quiz covers the concepts of image compression and encoding, including run-length encoding and CCITT facsimile encoding. Learn about the compression ratios and efficient data compression techniques. Test your knowledge of image data encoding and decoding methods.
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