适于图像压缩二维8× 8 DCT查表快速算法研究.pdf
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ISSN
计算机研究与发展 1000．12391CN11—17771TP
Journalof Researchand
Computer Development
8
适于图像压缩的二维8XDCT查表快速算法研究
纪秀花1’2 张彩明1’2 刘 慧1
1(山东经济学院计算机科学与技术学院济南 250014)
2(山东大学计算机科学与技术学院 济南250101)
(jane@sdu．edu，cn)
X
AFast2D8 8DCT Basedon Tablefor
AlgorithmLook-Up Image
JiXiuhual”，Zhang LiuHuil
Calmin91～，and
1(School Scienceand Economic inan250014)
ofComputer Technology。Shandong University，J
2(School Scienceand
of 250101)
Computer Technology，ShandongUniversity，Jinan
AbstractDiscrete been
cosinetransform(DCT)hasasanessentialofthewell—known
adopted part
standards．Itisa factorthatDCTcanbe as
image／videocompression asfast
key implementedpossible
of of
becauseits numberarithmetic inthereal—time transmission．Adirect8×
large operations image
8 2DDCTfast this
algorithm table(LUT)isintroducedin new is
usinglook—up paper．Thealgorithm
on
basedthe and ofbasic thenew numberof
conceptionsymmetry images．Withalgorithm。the
addition forthetransformis
operations reducedwhile fOrthetransformare
multiplyingoperations
thestructureof can fl data
eliminated．Bydesigning look-uptable，one of
skillfully
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