2016년 7월 22일 금요일

Lossy and Lossless Compression

What does Lossy and Lossless Compression mean?




Lossy Compression: Lossy file compression results in lost data and quality from the original version. Lossy compression is typically associated with image files, such as JPEGs, but can also be used for audio files, like MP3s. the “lossyness” of an image file may show up as jagged edges or pixilated areas. In audio files, the lossyness may produce a watery sound or reduce the dynamic range of the audio. This happens because lossy compression removes data from the original file, the resulting file takes up less disk space than the original.
Lossless Compression: With lossless compression, data is compressed without any loss of data. This can be a great feature compared to “lossy compression”. However, because no quality is lost, the resulting files are typically larger than image and audio files compressed with lossy compression. This method - lossless compression - can be applied to both image and audio files.

댓글 2개: