use of rle in compression

조회 수: 5 (최근 30일)
Jitesh Bhanushali
Jitesh Bhanushali 2014년 3월 29일
답변: Said BOUREZG 2015년 2월 28일
is use of rle is responsible for compressing the image ???

답변 (3개)

Jan
Jan 2014년 9월 21일
It depends on the compression, of course. RLE is applied in JPEG compression and as the name says already in images stored in the .rle format, as e.g. the startup screen of Windows (see Wiki: RLE).
It would be an efficient idea to ask your favorite internet search engine about "image rle" to find out more details by your own.

Hassan
Hassan 2014년 9월 21일
of course just think about the pixel's value as a character or number

Said BOUREZG
Said BOUREZG 2015년 2월 28일
Yes, it's responsible but not all time. for example here: X= 200 200 200 200 200 200 8 11 11 11 11 11 Y=rle(X) >> Y=200 6 8 1 11 5 Here CR= length(X)/length(Y) >>CR=2 %here we have a compression with compression ratio equal 2. but if we try to compress Y with rle we will have: F=rle(Y) >> F=200 1 6 1 8 1 1 1 11 1 5 1 So we will obtain CR=0.5 here we don't have a compression.

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