%Meanshift?Function:
%Created?a?simple?convergence?algorithm?which?looks?in?windows?of?varying
%sizes.?This?function?is?called?by?wrapper?programs?such?as?single
%track.This?algorithm?identifies?the?first?window?that?is?stable.

function?[s_win?x_c?y_c]?=?camshift（I_curr?s_win）

%Constant?Parameters:
T?=?.5;???????????????%?Threshold?of?convergence?（in?pixels）
del?=?T;?????????????%Pixel?delta?defaults?at?T
max_iterations?=?200;

%Input?the?initial?search?window?（location?and?size）
ix?=?s_win（1）;??????%Initial?x?location
iy?=?s_win（2）;??????%Initial?y?location
sx?=?s_win（3）;??????%Search?window?size?in?x
sy?=?s_win（4）;??????%Search?window?size?in?y

for?x_f?=?.5:.1:1.5
for?y_f?=?.5:.1:1.5

????x_c?=?round（ix?+?sx/2）;?
????y_c?=?round（iy?+?sy/2）;

????iterations?=?0;

????%While?the?solution?is?still?converging?as?long?as?we?haven‘t?been
????%searching?for?too?many?iterations
????while?（iterations?=?T）
????????
????????%Save?the?previous?ix?and?iy:
		x_p?=?x_c;
????????y_p?=?y_c;
????????
????????%?Compute?centroid?of?search?window
????????x_min?=?round（x_c?-?x_f?*?sx）;?
????????x_max?=?round（x_c?+?x_f?*?sx）;
????????y_min?=?round（y_c?-?y_f?*?sy）;
????????y_max?=?round（y_c?+?y_f?*?sy）;
????????
		TS?=?double（0）;
		for?i?=?x_min:x_max
????????????for?j?=?y_min:y_max
????????????????if?i??1&&?j?>??1
????????????????????%Calculate?the?sum?over?the?area:
????????????????????TS?=?TS?+?double（I_curr（ji））;
????????????????end
????????????end
		end
		
		I_x?=?double（0）;
		for?i?=?x_min:x_max
????????????for?j?=?y_min:y_max
????????????????if?i??1&&?j?>??1
????????????????????%Calculate?the?weighted?value:
????????????????????I_x?=?I_x?+?i?*?double（I_curr（ji））;
????????????????end
????????????end
		end
		
????????I_y?=?double（0）;
????????for?i?=?x_min:x_max
????????????for?j?=?y_min:y_max
????????????????if?i??1&&?j?>??1
????????????????????%Calculate?the?weighted?value:
????????????????????I_y?=?I_y?+?j?*?double（I_curr（ji））;
????????????????end
????????????end
????????end
		
????????%Find?the?centroid:
		x_c?=?round（I_x/TS）;
		y_c?=?round（I_y/TS）;
????????
???????
????????%Calculate?Current?Error
????????del?=?abs（x_p-x_c）?+?abs（y_p-y_c）;
????????iterations?=?iterations?+?1;
????end
????
????if?del?<=?T
????????break;
????end
????????
end
????if?del?<=?T
????????break;
????end
end

sx?=?min（max（round（x_f?*?sx）1）size（I_curr2））;
sy?=?min（max（round（y_f?*?sy）1）size（I_curr1））;
ix?=?min（max（round（x_c?-?x_f?*?sx/2）1）size（I_curr2））;
iy?=?min（max（round（y_c?-?y_f?*?sy/2）1）size（I_curr1））;

%Set?return?varaibles?for?new?window?location
s_win（1）?=?ix;??????%Initial?x?location
s_win（2）?=?iy;??????%Initial?y?location
s_win（3）?=?sx;??????%Search?window?size?in?x
s_win（4）?=?sy;??????%Search?window?size?in?y
end
????
????
???????
	
????

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2015-03-02?18:43??object-Tracking-In-Infrared-master\
?????文件????????2098??2015-03-02?18:43??object-Tracking-In-Infrared-master\GetGTPlots.m
?????文件????????2002??2015-03-02?18:43??object-Tracking-In-Infrared-master\GetGTPlots1.m
?????文件????????1465??2015-03-02?18:43??object-Tracking-In-Infrared-master\Handoff.m
?????文件???????21980??2015-03-02?18:43??object-Tracking-In-Infrared-master\NoDetect_Track.m
?????文件???????19518??2015-03-02?18:43??object-Tracking-In-Infrared-master\NoDetect_Track_A.m
?????文件?????????832??2015-03-02?18:43??object-Tracking-In-Infrared-master\README.md
?????文件????????4049??2015-03-02?18:43??object-Tracking-In-Infrared-master\SetParam.m
?????文件????????4078??2015-03-02?18:43??object-Tracking-In-Infrared-master\SetParamNDTA.m
?????文件???????18485??2015-03-02?18:43??object-Tracking-In-Infrared-master\Single_Track.m
?????文件???????18541??2015-03-02?18:43??object-Tracking-In-Infrared-master\Single_Track_Original.m
?????文件????????3738??2015-03-02?18:43??object-Tracking-In-Infrared-master\Track.m
?????文件????????2932??2015-03-02?18:43??object-Tracking-In-Infrared-master\camshift.m
?????文件????????3113??2015-03-02?18:43??object-Tracking-In-Infrared-master\camshift2.m
?????文件?????????810??2015-03-02?18:43??object-Tracking-In-Infrared-master\tlupdate.m