求8方向的sobel算子在matlab中的源代码 matlab:试采用Sobel算子对一幅256灰度图像进行边...
8\u65b9\u5411sobel\u7b97\u5b50\u8fdb\u884c\u8fb9\u7f18\u68c0\u6d4b\u7684MATLAB\u7a0b\u5e8f \u6ce8\u610f\u8981MATLAB\u7684 \u53ea\u627e\u5230\u4e86c\u8bed\u8a00\u7684 \u6c42\u597d\u5fc3\u4eba\u56de\u7b54\u5229\u7528\u5377\u79ef\u6838\u76f4\u63a5\u505a\u5377\u79ef\u5c31\u53ef\u4ee5\u3002\u7ed3\u679c\u53d6\u6700\u5927\u8005\u3002
I = imread('lena.bmp');
subplot(121);imshow(I);
%sobel\u7b97\u5b50\u6a21\u677f
H = [1 2 1;
0 0 0
-1 -2 -1];
J = conv2(I,H,'same'); %\u5377\u79ef\u8fd0\u7b97
subplot(122);imshow(uint8(J));
int ab1,ab2,ab3,ab4,ma,ma1,ma2;
int m_max_ab=0;
if(m_Img_sobel!=NULL)
{
delete []m_Img_sobel;
m_Img_sobel=NULL;
}
m_Img_sobel=new unsigned char[aLineByte*aHeight];
if(m_iBitCount!=8)
{
// AfxMessageBox("sobel只处理灰度图，请先转换成灰度图");
return false;
}
else
{
for(int h=2;h<aHeight-1;h++)
{
for(int w=2;w<aWidth-1;w++)
{
if(*(aImg_zone+h*aLineByte+w)>=150&&*(aImg_zone+h*aLineByte+w)<=200)
{
m_max_ab=0;
t0=*(aImgData+(h-1)*aLineByte+(w-1));
t1=*(aImgData+(h-1)*aLineByte+(w));
t2=*(aImgData+(h-1)*aLineByte+(w+1));
t3=*(aImgData+(h)*aLineByte+(w+1));
t4=*(aImgData+(h+1)*aLineByte+(w+1));
t5=*(aImgData+(h+1)*aLineByte+(w));
t6=*(aImgData+(h+1)*aLineByte+(w-1));
t7=*(aImgData+h*aLineByte+(w-1));
ab1=(t0+2*t1+t2)-(t4+2*t5+t6);
if(ab1<0)
{
ab1=-ab1;
}
ab2=(t0+2*t7+t6)-(t2+2*t3+t4);
if(ab2<0)
{
ab2=-ab2;
}
ab3=(t0*2+t1+t7)-(t4*2+t3+t5);
if(ab3<0)
{
ab3=-ab3;
}
ab4=abs((t1+t2*2+t3)-(t5+t6*2+t7));
ma2=max(ab3,ab4);
ma=max(ab1,ab2);
if(ma>0)
{
if(ma<=255)
{
*(m_Img_sobel+h*aLineByte+w)=ma;
}
else
{
*(m_Img_sobel+h*aLineByte+w)=255;
}
}
else
{
*(m_Img_sobel+h*aLineByte+w)=0;
}
}
}
}
}
绛旓細int t0,t1,t2,t3,t4,t5,t6,t7;///sobel妯℃澘鐨勫叓涓偦鍩熷 int ab1,ab2,ab3,ab4,ma,ma1,ma2;int m_max_ab=0;if(m_Img_sobel!=NULL){ delete []m_Img_sobel;m_Img_sobel=NULL;} m_Img_sobel=new unsigned char[aLineByte*aHeight];if(m_iBitCount!=8){ //AfxMessageBox("sobe...
绛旓細Roberts 杈圭紭绠楀瓙鏂瑰悜妯＄増 鐢变笂闈袱涓嵎绉畻瀛愬鍥惧儚杩愮畻鍚庯紝浠ｅ叆锛3-7锛夊紡锛屽彲姹傚緱鍥惧儚鐨勬搴﹀箙搴﹀硷紝鐒跺悗閫夊彇闂ㄩ檺TH锛屽仛濡備笅鍒ゆ柇>TH锛屼负闃惰穬鐘惰竟缂樼偣涓轰竴涓簩鍊煎浘鍍忥紝涔熷氨鏄浘鍍忕殑杈圭紭鍥惧儚銆4.4.1 Prewitt 绠楁硶鍘熺悊 Prewitt杈圭紭绠楀瓙鏄竴绉嶈竟缂樻牱鏉跨畻瀛愩侾rewitt 浠庡姞澶ц竟缂樻娴嬬畻瀛愮殑妯℃澘澶у皬鍑哄彂...
绛旓細Sobel绠楀瓙鍙︿竴绉嶅舰寮忔槸 鍚勫悜鍚屾obel(Isotropic Sobel)绠楀瓙 锛屼篃鏈変袱涓紝鏋勬垚锛 灏哠obel绠楀瓙鐭╅樀涓殑鎵鏈2鏀逛负鏍瑰彿2锛屽氨鑳藉緱鍒板悇鍚戝悓鎬obel鐨勭煩闃点傜敱浜嶴obel绠楀瓙鏄护娉㈢畻瀛愮殑褰㈠紡锛岀敤浜庢彁鍙栬竟缂橈紝鍙互鍒╃敤蹇熷嵎绉嚱鏁帮紝 绠鍗曟湁鏁堬紝鍥犳搴旂敤骞挎硾銆係obel绠楀瓙骞舵病鏈夊皢鍥惧儚鐨勪富浣撲笌鑳屾櫙涓ユ牸鍦板尯鍒嗗紑鏉ワ紝鎹㈣█...
绛旓細浣跨敤鍨傜洿Sobel绠楀瓙锛岃嚜鍔ㄩ夋嫨闃堝 [VSFAT Threshold]=edge(f,'sobel','vertical'); % 杈圭紭鎺㈡祴 figure, imshow(f),title('Original Image'), % 鏄剧ず鍘熷鍥惧儚 figure,imshow(VSFAT),title('Sobel Filter - Automatic Threshold'); % 鏄剧ず杈圭紭鎺㈡祴鍥惧儚 浣跨敤姘村钩鍜屽瀭鐩碨obel绠楀瓙锛岃嚜鍔ㄩ夋嫨闃堝...
绛旓細璁剧疆鍙岄槇鍊 t1, t2, 鏄繖鏍风殑锛宼1 <= t2 澶т簬 t2 鐨勭偣鑲畾鏄竟缂橈紱灏忎簬 t1 鐨勭偣鑲畾涓嶆槸杈圭紭锛涘湪 t1, t2 涔嬮棿鐨勭偣锛岄氳繃宸茬‘瀹氱殑杈圭紭鐐癸紝鍙戣捣8棰嗗煙鏂瑰悜鐨鎼滅储锛堝箍鎼滐級锛屽浘涓彲杈剧殑鏄竟缂橈紝涓嶅彲杈剧殑鐐逛笉鏄竟缂樸傛渶鍚庡緱鍑 canny 杈圭紭鍥俱 锛2锛変簩闃跺绠楀瓙 ...
绛旓細sobel绠楀瓙鍘熺悊鏄庢牱鐨 鎼滅储璧勬枡 鎴戞潵绛 鍒嗕韩 寰俊鎵竴鎵 鏂版氮寰崥 QQ绌洪棿 涓炬姤 娴忚278 娆 鏈湴鍥剧墖 鍥剧墖閾炬帴 鎻愪氦鍥炵瓟 鍖垮悕 鍥炵瓟鑷姩淇濆瓨涓负浣犳帹鑽:鐗瑰埆鎺ㄨ崘 鑰佸勾浜鸿埃瑷浼犳挱鍔涜秴骞磋交浜6鍊!Why? 涓浗缁忔祹涓嬭鐪熷洜涓轰汉鍙ｅ鍚? 涓轰粈涔堢孩閰掑悗鍔茶繖涔堝ぇ? 涓轰粈涔堟墦鍝堟瑺浼犳煋,杩樹細娴佹唱?
绛旓細鐪嬩綘绋嬪簭鐨勬剰鎬濇槸鍏堟娴嬪嚭杈圭紭锛屽洜涓鸿竟缂樹腑鐨勭嚎閮芥槸鐧借壊鐨勶紝鐒跺悗灏辨槸鐢╢or 鍜 if璇彞鎶婅竟缂樼粡杩囧鐞嗭紝涔熷氨鏄皢杈圭紭涓櫧鑹茬偣鍙樹负g,杩欏氨瑕佺湅浣犲叿浣撴兂浠ヤ綍绉嶆柟寮忓寮轰簡锛屽鏋滄槸瀵规暟鍙樻崲鐨勮瘽锛屼綘鍙互鍏堣g(:,:)=log((ps(:,:))+1)锛堝皢杩欐潯璇彞鏀惧湪for璇彞鐨勪笂闈級;杩欐牱澧炲己鐨勭粨鏋滃氨鏄墿灞曚綆鍊...
绛旓細Sobel绠楀瓙鏄护娉㈢畻瀛愮殑褰㈠紡鏉ユ彁鍙栬竟缂樸俋,Y鏂瑰悜鍚勭敤涓涓ā鏉,涓や釜妯℃澘缁勫悎璧锋潵鏋勬垚1涓搴︾畻瀛愩俋鏂瑰悜妯℃澘瀵瑰瀭鐩磋竟缂樺奖鍝嶆渶澶,Y鏂瑰悜妯℃澘瀵规按骞宠竟缂樺奖鍝嶆渶澶с 鍥1 Sobel绠楀瓙妯℃澘 2.1.2 robert绠楀瓙 Robert绠楀瓙鏄竴绉嶆搴︾畻瀛,瀹冪敤浜ゅ弶鐨勫樊鍒嗚〃绀烘搴,鏄竴绉嶅埄鐢ㄥ眬閮ㄥ樊鍒嗙畻瀛愬鎵捐竟缂樼殑绠楀瓙,瀵瑰叿鏈夐櫋宄殑浣庡櫔澹扮殑鍥惧儚...
绛旓細鐢Sobel绠楀瓙銆丷oberts绠楀瓙銆丳rewitt绠楀瓙瀵瑰浘鍍忚繘琛岃竟缂樻娴嬬殑绋嬪簭,鍦╩atlab鐜涓,绋嬪簭瑕佸畬鏁,鏈濂芥湁鍥 5 [email protected],璋㈣阿,瑕佸敖蹇... [email protected],璋㈣阿,瑕佸敖蹇 灞曞紑 鎴戞潵绛 绛旈鎶藉 棣栨璁ょ湡绛旈鍚 鍗冲彲鑾峰緱3娆℃娊濂栨満浼,100%涓銆 鏇村闂 鍒嗕韩 寰俊鎵竴鎵 鏂版氮寰崥 QQ绌洪棿 涓炬姤 娴忚16836 ...
绛旓細璁＄畻鏈鸿瑙夐鍩熺殑涓绉嶉噸瑕佸鐞嗘柟娉曘備富瑕佺敤浜庤幏寰楁暟瀛楀浘鍍忕殑涓闃舵搴︼紝甯歌鐨勫簲鐢ㄥ拰鐗╃悊鎰忎箟鏄竟缂樻娴嬨傚湪鎶鏈笂锛屽畠鏄竴涓鏁ｇ殑涓闃跺樊鍒绠楀瓙锛岀敤鏉ヨ绠楀浘鍍忎寒搴﹀嚱鏁扮殑涓闃舵搴︿箣杩戜技鍊笺傚湪鍥惧儚鐨勪换浣曚竴鐐逛娇鐢ㄦ绠楀瓙锛屽皢浼氫骇鐢熻鐐瑰搴旂殑姊害鐭㈤噺鎴栨槸鍏舵硶鐭㈤噺銆
