%----------------------------
%計(jì)算邊緣方向直方圖
%輸入：圖片序號(hào)
%輸出:量化、歸一化后的直方圖（八個(gè)角度的概率統(tǒng)計(jì)）
%----------------------------
function?edgehist=edgedir_his（train_foldertrain_image）

%num=1;
%?imgdir=‘train_55_1\‘;
%?imgsuffix=‘.jpg‘;
imgdir?=?train_folder;
imgsuffix?=?train_image;
rgb_img=imread（[imgdirimgsuffix]）;
%?gray_img=rgb2gray（rgb_img）;?%源程序，用了2值圖像后注釋掉了?
gray_img?=?rgb_img;
[rowcol]=size（gray_img）;
gray_img=double（gray_img）;

%提取canny邊緣算子
edge_canny=edge（gray_img‘canny‘）;
edge_num=sum（sum（edge_canny））;%邊緣總點(diǎn)數(shù)

%計(jì)算梯度矢量GxGy
for?cir1=2:row-1
????for?cir2=2:col-1
????????Gx（cir1cir2）=sum（gray_img（cir1-1:cir1+1cir2+1））...
????????????-sum（gray_img（cir1-1:cir1+1cir2-1））...
????????????+gray_img（cir1cir2+1）-gray_img（cir1cir2-1）;
????????Gy（cir1cir2）=sum（gray_img（cir1+1

?屬性????????????大小?????日期????時(shí)間???名稱(chēng)
-----------?---------??----------?-----??----
?????目錄???????????0??2012-12-17?14:48??edgedir_his?-?副本\
?????文件???????20637??2012-11-18?14:20??edgedir_his?-?副本\all.mat
?????文件????????3520??2012-12-16?20:15??edgedir_his?-?副本\edgeDirHis_norsmall_1.txt
?????文件????????3520??2012-12-16?20:13??edgedir_his?-?副本\edgeDirHis_norsmall_10.txt
?????文件????????3520??2012-12-16?20:13??edgedir_his?-?副本\edgeDirHis_norsmall_11.txt
?????文件????????3520??2012-12-16?20:12??edgedir_his?-?副本\edgeDirHis_norsmall_12.txt
?????文件????????3520??2012-12-16?20:12??edgedir_his?-?副本\edgeDirHis_norsmall_13.txt
?????文件????????3520??2012-12-16?20:12??edgedir_his?-?副本\edgeDirHis_norsmall_14.txt
?????文件????????3520??2012-12-16?20:10??edgedir_his?-?副本\edgeDirHis_norsmall_15.txt
?????文件????????3520??2012-12-16?20:15??edgedir_his?-?副本\edgeDirHis_norsmall_2.txt
?????文件????????3520??2012-12-16?20:15??edgedir_his?-?副本\edgeDirHis_norsmall_3.txt
?????文件????????3520??2012-12-16?20:15??edgedir_his?-?副本\edgeDirHis_norsmall_4.txt
?????文件????????3520??2012-12-16?20:14??edgedir_his?-?副本\edgeDirHis_norsmall_5.txt
?????文件????????3520??2012-12-16?20:14??edgedir_his?-?副本\edgeDirHis_norsmall_6.txt
?????文件????????3520??2012-12-16?20:14??edgedir_his?-?副本\edgeDirHis_norsmall_7.txt
?????文件????????3520??2012-12-16?20:14??edgedir_his?-?副本\edgeDirHis_norsmall_8.txt
?????文件????????3520??2012-12-16?20:13??edgedir_his?-?副本\edgeDirHis_norsmall_9.txt
?????文件????????2033??2012-12-16?20:12??edgedir_his?-?副本\edgedir_his.m
?????文件?????????601??2012-11-10?20:01??edgedir_his?-?副本\Euc_dist.m
?????文件????????4393??2012-12-16?20:24??edgedir_his?-?副本\main.m
?????文件?????????787??2012-11-10?19:47??edgedir_his?-?副本\read_txt_edgedir_his.m
?????文件?????????636??2012-12-16?20:15??edgedir_his?-?副本\write_txt_edgedir_his.m