Run-length encoding
simple form of data compression in which runs of data (sequences in which the same data value occurs in many consecutive data elements) are stored as a single data value and count
Run-length encoding (RLE) is a very simple form of lossless data compression. In RLE runs of data (that is, sequences in which the same data value occurs in many consecutive data elements) are stored as a single data value and count, rather than as the original run.
