data compression--encoding ino using fewer bits, to save space on hard drive or bandwith space.
example: ZIP file, which is a smaller file and also archives information as well
Lossless vs. Lossy
Lossless --represents data more concisely, but without error. Example 25.888888888 encoded as 25. (9) 8
Lossy-- would be 26, which is a smaller size but not the correct data (25.888888888 doesn't equal 26, but this saves much more space)
Lossy image compression is used in digital cameras, DVDs use some forms of lossy
3-way tradeoff with quality loss, compressed data size, and compression speed
I found this to be quite an interesting article. I was not previously acquainted with the theory behind the use of compressed files, but it definitely makes sense.
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment