Exam 15: Data Compression

JPEG encoding involves ___, a process that reveals the redundancies in a block.

In a ___ data compression method, the received data is an exact copy of the original message.

___ data compression method, the received data need not be an exact copy of the original message.

In ___ encoding, PPPPPPPPPPPPPPP can be replaced by P15.

In JPEG encoding, the ___ process breaks the original picture into smaller blocks and assigns a value to each pixel in a block.

___ is a lossy compression method for pictures and graphics, whereas ___ is a lossy compression method for video.

Data is compressed using a dictionary with indexes to strings. This is __________ .

A string of one hundred 0s is replaced by two markers, a 0, and the number 100. This is ___.

___ is an example of lossy compression.

In ___ encoding, the more frequently occurring characters have shorter codes than the less frequently occurring characters.

___ encoding is a lossless data compression method.

The last step in JPEG, ___, removes redundancies.

LZ encoding requires ___.