%%%估計方向場以確定該像素點的脊線方向，以便于進行二值化
temp=（1/9）*[1?1?1;1?1?1;1?1?1];%模板系數?????均值濾波
?Im=double（I）;
?In=zeros（mn）;???%?創建一個全0的二維數組，m行n列
for?a=2:m-1;
????for?b=2:n-1;
In（ab）=Im（a-1b-1）*temp（11）+Im（a-1b）*temp（12）+Im（a-1b+1）*temp（13）+Im（ab-1）*temp（21）+Im（ab）*temp（22）+Im（ab+1）*temp（23）+Im（a+1b-1）*temp（31）+Im（a+1b）*temp（32）+Im（a+1b+1）*temp（33）;
????end
end
I=In;
Im=zeros（mn）;???%?創建一個全0的二維數組，m行n列
for?x=5:m-5;
???for?y=5:n-5;
???????%分別計算8個方向上的經過處理后的灰度值????
????sum1=I（xy-4）+I（xy-2）+I（xy+2）+I（xy+4）;
????sum2=I（x-2y+4）+I（x-1y+2）+I（x+1y-2）+I（x+2y-4）;
????sum3=I（x-2y+2）+I（x-4y+4）+I（x+2y-2）+I（x+4y-4）;
????sum4=I（x-2y+1）+I（x-4y+2）+I（x+2y-1）+I（x+4y-2）;
????sum5=I（x-2y）+I（x-4y）+I（x+2y）+I（x+4y）;
????sum6=I（x-4y-2）+I（x-2y-1）+I（x+2y+1）+I（x+4y+2）;
????

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2014-02-23?22:30??指紋識別\
?????文件?????????517??2014-02-20?10:05??指紋識別\P.m
?????文件????????1889??2014-02-20?10:00??指紋識別\binaryzation.m
?????文件?????????693??2014-02-20?10:29??指紋識別\cut.m
?????文件?????????486??2014-02-20?10:03??指紋識別\de_empty.m
?????文件?????????208??2014-02-20?09:19??指紋識別\deflashing.m
?????文件?????????293??2014-02-20?11:02??指紋識別\distance1.m
?????文件?????????524??2014-02-20?11:04??指紋識別\find_point.m
?????文件?????????563??2014-02-20?11:00??指紋識別\last1.m
?????文件????????3032??2014-02-20?11:57??指紋識別\main.m
?????文件?????????801??2014-02-20?09:35??指紋識別\normalization.m
?????文件????????1079??2014-02-20?10:09??指紋識別\point.m
?????文件????????5025??2014-02-20?09:36??指紋識別\pretreatment.m
?????文件????????2408??2014-02-20?09:58??指紋識別\segmentation.m
?????文件?????????771??2014-02-20?10:51??指紋識別\single_point.m
?????文件?????????456??2014-02-20?10:24??指紋識別\smooth.m
?????文件?????????284??2014-02-20?09:24??指紋識別\thinning.m
?????文件?????????923??2014-02-20?10:50??指紋識別\walk.m
?????文件???????23456??2014-02-18?18:11??指紋識別\zhiwen1.jpg
?????文件???????23456??2014-02-18?18:11??指紋識別\zhiwen2.jpg
?????文件???????24472??2014-02-17?17:04??指紋識別\zhiwen3.jpg
?????文件???????98304??2014-02-19?18:12??指紋識別\指紋識別.doc