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21 4 Vol. 21, No.4
2006 8 ELECTRO- OPTIC TECHNOLOGY APPLICATION August. 2006
: 1673- 1255(2006) 04- 0060- 04
(SSDA)
沈慧玲, 戴本祁
( , 200237)
: ( SSDA) ,
, . SSDA , ,
, , .
: SSDA .
: ; SSDA; ;
: TN911. 73 : A
A Speedup Algorithm Based on SSDA
SHEN Huiling, DAI Ben i
( I nf ormation Science and Engineering College of East China University of
Science and Technology, Shanghai 200237, China)
Abstract:The se uential similarity detection algorithm ( SSDA) is studied to improve the conven
tional image matching, w hich is an efficient image matching algorithm. A threshold is given in the algo
rithm, w hich means the upper bound of distance betw een the template and the corresponding w indow in
the image.A speedup algorithm is proposed. The low er bound of distance betw een the template and the
corresponding w indow is calculated and if the value exceeds the threshold, this w indow can be skipped.
Experiments show that the proposed algorithm has a improvement in the speed compared to SSDA.
Key words: model matching; SSDA; speedup algorithm
[ 2]
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) ( ) .
,
. 1 模板匹配算法
X 1. 1
[ 1]
. 1
, . S ,
. T , 1 . T
, , S , Si, j .
T Si,j
, [ 3]
SAD( sum of absolute distances) ,
, . ,
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