Detectio
Ma
erbasedo
wavelettra
sforma
dca
yoperator
罗传龙
1
张鸿莹1张晓梅1
1中国矿业大学北京北京100083
AbstractThispapera
alysesimagedepositio
a
drestructio
basedo
wavelettra
sformthe
imageedgedetectio
basedo
traditio
alca
yoperatorTheexperime
tresultsshowthattheproposedmehodhasabetterabilitytha
Ca
yedgedetectora
dmorepreciselocatio
restrai
s
oiseeffectivelya
dadaptstotheimageswithmoreedgecharacteristicsKeywordswavelettra
sformCa
yoperatoredgedectectio
1I
troductio
Forimageprocessi
gtaskssuchasthe
eedforthespeeda
dprecisio
ofimageprocessi
g
ecessitatesp1reciselocalizatio
a
ddetectio
ofi
terestededgesTheimageisge
erallycomplexwithgreatdiversityamo
gdiffere
tregio
softheimageEarlymethodssuchasthefirsta
dseco
dorderdiffere
tialoperatorsforedgedetectio
areu
suitableduetotheirpoorperforma
cea
dse
sitivityto
oiseTosolvetheproblemlaterapproachessuchastheclassicCa
yedgedetectorcombi
etheuseofsmoothi
gfu
ctio
swithzerocrossi
gdetectio
Ca
ydetectorusesthefirstderivativeoftheGuassia
tocombi
ethesmoothi
ga
dgradie
tcalculatio
oftheimageItprovestobetheoptimalapproximatio
oftheproductofSNRa
dedgelocalizatio
Byusi
gdoublethresholdso
themodulusmaximaimageitca
effectivelyremove
oisea
d