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vbbLabelerX.m
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function vbbLabeler( objTypes, vidNm, annNm )
% Video bound box (vbb) Labeler.
%
% Used to annotated a video (seq file) with (tracked) bounding boxes. An
% online demo describing usage is available. The code below is fairly
% complex and poorly documented. Please do not email me with question about
% how it works (unless you discover a bug).
%
% USAGE
% vbbLabeler( [objTypes], [vidNm], [annNm] )
%
% INPUTS
% objTypes - [{'object'}] list of object types to annotate
% imgDir - [] initial video to load
% resDir - [] initial annotation to load
%
% OUTPUTS
%
% EXAMPLE
% vbbLabeler
%
% See also vbb, vbbPlayer
%
% Caltech Pedestrian Dataset Version 3.2.1
% Copyright 2014 Piotr Dollar. [pdollar-at-gmail.com]
% Licensed under the Simplified BSD License [see external/bsd.txt]
% defaults
if(nargin<1 || isempty(objTypes)), objTypes={'object'}; end
if(nargin<2 || isempty(vidNm)), vidNm=''; end
if(nargin<3 || isempty(annNm)), annNm=''; end
% settable constants
maxSkip = 250; % max value for skip
nStep = 16; % number of objects to display in lower panel
repLen = 1; % number of seconds to replay on left replay
maxCache = 500; % max cache length (set as high as memory allows)
fps = 10; % initial fps for playback (if 0 uses actual fps)
skip0 = 1; % initial skip (zoom)
seqPad = 4; % amount of padding around object in seq view
siz0 = 10; % minimum rect width/height
sizLk = 0; % if true rects cannot be resized
colType=0; rectCols=uniqueColors(3,8); % color rects according to id
%colType=1; rectCols=uniqueColors(3,3); % color rects according to type
% handles to gui objects / other globals
enStr = {'off','on'};
[hFig, pLf, pRt, pMenu, pObj, pSeq ] = deal([]);
[A,skip,offset,curInd,seqH,objApi,dispApi,filesApi] = deal([]);
% initialize all
makeLayout();
filesApi = filesMakeApi();
objApi = objMakeApi();
dispApi = dispMakeApi();
filesApi.closeVid();
set(hFig,'Visible','on');
drawnow;
% optionally load default data
if(~isempty(vidNm)), filesApi.openVid(vidNm); end
if(~isempty(annNm)), filesApi.openAnn(annNm); end
function makeLayout()
% properties for gui objects
bg='BackgroundColor'; fg='ForegroundColor'; ha='HorizontalAlignment';
units={'Units','pixels'}; st='String'; ps='Position'; fs='FontSize';
axsPr=[units {'Parent'}]; o4=[1 1 1 1]; clr=[.1 .1 .1];
pnlPr=[units {bg,clr,'BorderType','none','Parent'}];
btnPr={bg,[.7 .7 .7],fs,10,ps};
chbPr={'Style','checkbox',fs,8,'Interruptible','off',bg,clr,fg,'w',ps};
txtPr={'Style','text',fs,8,bg,clr,fg,'w',ps};
edtPr={'Style','edit',fs,8,bg,clr,fg,'w',ps};
uic = @(varargin) uicontrol(varargin{:});
icn=load('vbbIcons'); icn=icn.icons;
% hFig: main figure
set(0,units{:}); ss=get(0,'ScreenSize');
if( ss(3)<800 || ss(4)<600 ), error('screen too small'); end
pos = [(ss(3)-780)/2 (ss(4)-580)/2 780 580];
hFig = figure( 'Name','VBB Labeler', 'NumberTitle','off', ...
'Toolbar','auto', 'MenuBar','none', 'ResizeFcn',@figResized, ...
'Color','k', 'Visible','off', 'DeleteFcn',@exitLb, ps,pos, ...
'keyPressFcn',@keyPress );
% pMenu: video/annotation menus
pMenu.hVid = uimenu(hFig,'Label','Video');
pMenu.hVidOpn = uimenu(pMenu.hVid,'Label','Open');
pMenu.hVidCls = uimenu(pMenu.hVid,'Label','Close');
pMenu.hAnn = uimenu(hFig,'Label','Annotation');
pMenu.hAnnNew = uimenu(pMenu.hAnn,'Label','New');
pMenu.hAnnOpn = uimenu(pMenu.hAnn,'Label','Open');
pMenu.hAnnSav = uimenu(pMenu.hAnn,'Label','Save');
pMenu.hAnnCls = uimenu(pMenu.hAnn,'Label','Close');
pMenu.hCn = [pMenu.hVid pMenu.hAnn];
% pObj: top panel containing object controls
pObj.h=uipanel(pnlPr{:},hFig);
pObj.hObjTp = uic( pObj.h,'Style','popupmenu',fs,8,units{:},...
ps,[31 2 100 25],st,objTypes,'Value',1);
pObj.hBtPrv = uic(pObj.h,btnPr{:},[5 3 25 25],'CData',icn.rNext{1});
pObj.hBtNxt = uic(pObj.h,btnPr{:},[132 3 25 25],'CData',icn.rNext{2});
pObj.hBtNew = uic(pObj.h,btnPr{:},[169 3 25 25],'CData',icn.rNew);
pObj.hBtDel = uic(pObj.h,btnPr{:},[196 3 25 25],'CData',icn.rDel);
pObj.hCbFix = uic(pObj.h,chbPr{:},[230 9 50 13],st,'Lock');
pObj.hStSiz = uic(pObj.h,txtPr{:},[280 9 80 13],ha,'Center');
pObj.hBtSpt = uic(pObj.h,btnPr{:},[350 3 25 25],ha,'Center'); %添加切分按钮
pObj.hCn = [pObj.hObjTp pObj.hBtNew pObj.hBtDel ...
pObj.hBtPrv pObj.hBtNxt pObj.hCbFix];
% pSeq: bottom panel containing object sequence
pSeq.h=uipanel(pnlPr{:},hFig);
pSeq.hAx = axes(axsPr{:},pSeq.h,ps,o4);
pSeq.apiRng = selectorRange(pSeq.h,o4,nStep,[],[.1 .5 1]);
pSeq.apiOcc = selectorRange(pSeq.h,o4,nStep,[],[.9 .9 .7]);
pSeq.apiLck = selectorRange(pSeq.h,o4,nStep,[],[.5 1 .5]);
pSeq.lblRng = uic(pSeq.h,txtPr{:},o4,st,'vs',fs,7,ha,'Center');
pSeq.lblOcc = uic(pSeq.h,txtPr{:},o4,st,'oc',fs,7,ha,'Center');
pSeq.lblLck = uic(pSeq.h,txtPr{:},o4,st,'lk',fs,7,ha,'Center');
% pLf: left main panel
pLf.h=uipanel(pnlPr{:},hFig); pLf.hAx=axes(axsPr{:},hFig);
icn5={icn.pPlay{1},icn.pStep{1},icn.pPause,icn.pStep{2},icn.pPlay{2}};
for i=1:5, pLf.btn(i)=uic(pLf.h,btnPr{:},o4,'CData',icn5{i}); end
pLf.btnRep = uic(pLf.h,btnPr{:},[10 5 25 20],'CData',icn.pRepeat);
pLf.fpsLbl = uic(pLf.h,txtPr{:},o4,ha,'Left',st,'fps:');
pLf.fpsInd = uic(pLf.h,edtPr{:},o4,ha,'Center');
pLf.hFrInd = uic(pLf.h,edtPr{:},o4,ha,'Right');
pLf.hFrNum = uic(pLf.h,txtPr{:},o4,ha,'Left');
pLf.hCn = [pLf.btn pLf.btnRep];
% pRt: right main panel
pRt.h=uipanel(pnlPr{:},hFig); pRt.hAx=axes(axsPr{:},hFig);
pRt.btnRep = uic(pRt.h,btnPr{:},[10 5 25 20],'CData',icn.pRepeat);
pRt.btnGo = uic(pRt.h,btnPr{:},[350 5 25 20],'CData',icn.fJump);
pRt.hFrInd = uic(pRt.h,txtPr{:},o4,ha,'Right');
pRt.hFrNum = uic(pRt.h,txtPr{:},o4,ha,'Left');
pRt.stSkip = uic(pRt.h,txtPr{:},[55 8 45 14],ha,'Right');
pRt.edSkip = uic(pRt.h,edtPr{:},[100 7 28 16],ha,'Center');
pRt.stOffst = uic(pRt.h,txtPr{:},[140 7 30 14],ha,'Center');
pRt.slOffst = uic(pRt.h,'Style','slider',bg,clr,ps,[175 5 70 20]);
setIntSlider( pRt.slOffst, [1 nStep-1] );
pRt.hCn = [pRt.btnRep pRt.btnGo pRt.slOffst];
function figResized( h, e ) %#ok<INUSD>
% overall size of drawable area (fWxfH)
pos = get(hFig,ps); pad=8; pTopH=30;
fW=pos(3)-2*pad; fH=pos(4)-2*pad-pTopH-75;
fW0=1290; fH0=(480+fW0/nStep);
fW=max(fW,700); fH=max(fH,700*fH0/fW0);
fW=min(fW,fH*fW0/fH0); fH=min(fH,fW*fH0/fW0);
% where to draw
r = fW/fW0; fW=round(fW); fH=round(fH);
seqH=floor((fW0-pad)/nStep*r); seqW=seqH*nStep; seqH=seqH+29;
x = max(pad,(pos(3)-fW)/2);
y = max(pad,(pos(4)-fH-pTopH-70)/2);
% set panel positions (resized from canonical positions)
set( pObj.h, ps, [x y+fH+70 640*r pTopH] );
set( pLf.hAx, ps, [x y+seqH+32 640*r 480*r] );
set( pRt.hAx, ps, [x+650*r y+seqH+32 640*r 480*r] );
set( pLf.h, ps, [x y+seqH+2 640*r 30] );
set( pRt.h, ps, [x+650*r y+seqH+2 640*r 30] );
set( pSeq.h, ps, [x+(fW-seqW)/2+2 y seqW seqH] );
% postion pSeq contents
set(pSeq.hAx,ps,[0 11 seqW seqH-29]); y=1;
pSeq.apiLck.setPos([0 y seqW 10]);
set(pSeq.lblLck,ps,[-13 y 12 10]); y=seqH-18;
pSeq.apiOcc.setPos([0 y seqW 10]);
set(pSeq.lblOcc,ps,[-13 y 12 10]); y=seqH-9;
pSeq.apiRng.setPos([0 y seqW 10]);
set(pSeq.lblRng,ps,[-13 y 12 10]);
% postion pLf and pRt contents
x=640*r-90; set(pRt.btnGo,ps,[x+60 5 25 20]); x1=640/3*r-75;
set(pLf.hFrInd,ps,[x 7 40 16]); set(pLf.hFrNum,ps,[x+40 8 40 14]);
set(pRt.hFrInd,ps,[x-30 8 40 14]); set(pRt.hFrNum,ps,[x+10 8 40 14]);
for i2=1:5, set(pLf.btn(i2),ps,[640/2*r+(i2-3.5)*26+10 5 25 20]); end
set(pLf.fpsLbl,ps,[x1 8 23 14]); set(pLf.fpsInd,ps,[x1+23 7 38 16]);
% request display update
if(~isempty(dispApi)); dispApi.requestUpdate(true); end;
end
function exitLb( h, e ) %#ok<INUSD>
filesApi.closeVid();
end
function keyPress( h, evnt ) %#ok<INUSL>
char=int8(evnt.Character); if(isempty(char)), char=0; end;
if( char==28 ), dispApi.setPlay(-inf); end
if( char==29 ), dispApi.setPlay(+inf); end
if( char==31 ), dispApi.setPlay(0); end
if( char==119 ), dispApi.setFrame('+'); end
if( char==113 ), dispApi.setFrame('-'); end
if( char==97 ), dispApi.setOffset('-'); end
if( char==115 ), dispApi.setOffset('+'); end
end
function setIntSlider( hSlider, rng )
set(hSlider,'Min',rng(1),'Value',rng(1),'Max',rng(2));
minSt=1/(rng(2)-rng(1)); maxSt=ceil(.25/minSt)*minSt;
set(hSlider,'SliderStep',[minSt maxSt]);
end
end
function api = objMakeApi()
% variables
[objId,objS,objE,objInd,seqObjs,lims] = deal([]);
apiRng=pSeq.apiRng; apiOcc=pSeq.apiOcc; apiLck=pSeq.apiLck;
% callbacks
set(pObj.hBtNew, 'callback', @(h,e) objNew());
set(pObj.hBtDel, 'callback', @(h,e) objDel());
set(pObj.hBtPrv, 'callback', @(h,e) objToggle(-1));
set(pObj.hBtNxt, 'callback', @(h,e) objToggle(+1));
set(pObj.hObjTp, 'callback', @(h,e) objSetType());
set(pObj.hCbFix, 'callback', @(h,e) objSetFixed());
set(pObj.hBtSpt, 'callback', @(h,e) objSplit()); %建立对应函数
apiRng.setRngChnCb(@objSetRng); apiRng.setLockCen(1);
apiOcc.setRngChnCb(@objSetOcc); apiLck.setRngChnCb(@objSetLck);
% create api
api=struct( 'init',@init, 'drawRects',@drawRects, ...
'prepSeq',@prepSeq, 'prepPlay',@prepPlay, ...
'annForSave',@annForSave, 'annSaved',@annSaved, 'objMoveDown', @objMoveDown, 'objLockCurrent', @objLockCurrent );
function init()
[objId,objS,objE,objInd,seqObjs,lims] = deal([]);
objId=-1; objSelect(-1); isAnn=~isempty(A); prepPlay();
if( ~isAnn ), return; end
lims=[0 0 dispApi.width() dispApi.height()]+.5;
objTypes = unique([A.objLbl(A.objInit==1) objTypes]);
t='*new-type*'; objTypes=[setdiff(objTypes,t) t];
set( pObj.hObjTp, 'String', objTypes, 'Value',1 );
end
function prepPlay()
if(objId>0), A=vbb('setRng',A,objId,objS+1,objE+1); end
set(pObj.hStSiz,'String',''); set(pObj.hCn,'Enable','off');
apiRng.enable(0); apiOcc.enable(0); apiLck.enable(0);
end
function seqI = prepSeq()
seqI=100*ones(seqH,seqH*nStep,3,'uint8'); seqObjs=[];
if(isempty(A)), return; end; n=nStepVis();
% see if objId still visible, adjust controls accordingly
lstInd = curInd + min(dispApi.nFrameRt(),skip*n-1);
isVis = objId>0 && objS<=lstInd && objE>=curInd;
set(pObj.hStSiz,'String',''); set(pObj.hCn,'Enable','on');
apiRng.enable(isVis); apiOcc.enable(isVis); apiLck.enable(isVis);
if(~isVis), objSelect(-1); return; end
% extrapolate obj to current range for display only
objSe=min(objS,curInd); objEe=max(objE,lstInd);
A = vbb( 'setRng', A, objId, objSe+1, objEe+1 );
% bound objInd to be in a visible axes
s=max(objSe,curInd); e=min(objEe,lstInd);
objInd = min(max(objInd,s),e);
objInd = curInd + skip*floor((objInd-curInd)/skip);
% update apiRng/apiOcc/apiLck
s = max(floor((objS-curInd)/skip)+1,1);
e = min(floor((objE-curInd)/skip)+1,n);
rng=zeros(1,nStep); occ=rng; lck=rng; rng(s:e)=1;
for i=1:n
ind0=curInd+(i-1)*skip; ind1=objGrpInd(ind0,1);
occ(i) = max(vbb('getVal',A,objId,'occl',ind0+1,ind1+1));
lck(i) = max(vbb('getVal',A,objId,'lock',ind0+1,ind1+1));
end;
apiRng.setRng(rng); apiOcc.setRng(occ); apiLck.setRng(lck);
apiRng.enable([1 n]); apiOcc.enable([s e]); apiLck.enable([s e]);
if(objS<curInd), lk=0; else lk=[]; end; apiRng.setLockLf(lk);
if(objE>lstInd), lk=0; else lk=[]; end; apiRng.setLockRt(lk);
% update other gui controls
objType=vbb('getVal',A,objId,'lbl');
set(pObj.hObjTp,'Value',find(strcmp(objType,objTypes)));
p=ceil(vbb('getVal',A,objId,'pos',objInd+1));
set(pObj.hStSiz,'String',[num2str(p(3)) ' x ' num2str(p(4))]);
% create seqObjs and seqI for display
seqObjs = repmat(struct(),1,n);
for i=0:n-1, ind=curInd+i*skip;
% absolute object location
pos0 = vbb('getVal', A, objId, 'pos', ind+1 );
posv = vbb('getVal', A, objId, 'posv', ind+1 );
% crop / resize sequence image
posSq = bbApply( 'resize', pos0, seqPad, seqPad );
posSq = bbApply( 'squarify', posSq, 0 );
[Ii,posSq] = bbApply('crop',dispApi.getImg(ind),posSq); Ii=Ii{1};
rows = round(linspace(1,size(Ii,1),seqH-2));
cols = round(linspace(1,size(Ii,2),seqH-2));
seqI(2:seqH-1,(2:seqH-1)+i*seqH,:) = Ii(rows,cols,:);
% oLim~=intersect(posSq,lims); pos~=centered(pos0*res)
res = (seqH-2)/size(Ii,1);
xDel=-i*seqH-1+posSq(1)*res; yDel=-1+posSq(2)*res;
oLim = bbApply('intersect',lims-.5,posSq);
oLim = bbApply('shift',oLim*res,xDel,yDel);
pos = bbApply('shift',pos0*res,xDel,yDel);
if(any(posv)), posv=bbApply('shift',posv*res,xDel,yDel); end
% seqObjs info
lks=vbb('getVal',A,objId,'lock',ind+1,objGrpInd(ind,1)+1);
seqObjs(i+1).pos0=pos0; seqObjs(i+1).pos=pos;
seqObjs(i+1).posv=posv; seqObjs(i+1).res=res;
seqObjs(i+1).lims=oLim; seqObjs(i+1).lock=max(lks);
end
end
function hs = drawRects( flag, ind )
hs=[]; if(isempty(A)), return; end
switch flag
case {'panelLf','panelRt'}
os=A.objLists{ind+1}; n=length(os);
if(n>0), [~,ord]=sort([os.id]==objId); os=os(ord); end
lockSet = get(pObj.hCbFix,'Value');
playMode = strcmp(get(pObj.hObjTp,'enable'),'off');
for i=1:n, o=os(i); id=o.id; lbl=A.objLbl(id);
if(A.objHide(id)), continue; end
if(lockSet && id~=objId && ~playMode), continue; end
static=(lockSet && id~=objId) || playMode;
% static=(lockSet && id~=objId) || 1; %一直显示标签
% hs1=drawRect(o.pos,o.posv,lims,lbl,static,id,ind,-1); %原函数
hs1=drawRect(o.pos,o.posv,lims,lbl,static,id,ind,-1,o.occl); %增加o.occl参数
hs=[hs hs1]; %#ok<AGROW>
end
case 'objSeq'
if(objInd==-1), return; end
n=nStepVis(); id=objId; lbl=A.objLbl(id);
for i=1:n, o=seqObjs(i); ind=curInd+skip*(i-1);
% hs1=drawRect(o.pos,o.posv,o.lims,lbl,0,id,ind,i-1); %原函数
hs1=drawRectSeq(o.pos,o.posv,o.lims,lbl,0,id,ind,i-1); %使用单独的函数进行绘制
hs=[hs hs1]; %#ok<AGROW>
end
end
%新增的专门用于显示下方16个窗口标注框的函数
function hs = drawRectSeq(pos,posv,lims,lbl,static,id,ind,sid)
if(colType), t=find(strcmp(lbl,objTypes)); else t=id; end
col=rectCols(mod(t-1,size(rectCols,1))+1,:);
if(id~=objId), ls='-'; else
if(ind==objInd), ls='--'; else ls=':'; end; end
rp = {'lw',2,'color',col,'ls',ls,'rotate',0,'ellipse',0};
[hs,api]=imRectRot('pos',pos,'lims',lims,rp{:});
api.setSizLock( sizLk );
if( static )
api.setPosLock(1);
ht=text(pos(1),pos(2)-10, lbl); hs=[hs ht];
set(ht,'color','w','FontSize',10,'FontWeight','bold');
else
api.setPosSetCb( @(pos) objSetPos(pos(1:4),id,ind,sid) );
end
if( any(posv) )
rp={'LineWidth',2,'EdgeColor','y','LineStyle',':'};
hs = [hs rectangle('Position',posv,rp{:})];
end
end
function hs = drawRect(pos,posv,lims,lbl,static,id,ind,sid,isocc)
if(colType), t=find(strcmp(lbl,objTypes)); else t=id; end
col=rectCols(mod(t-1,size(rectCols,1))+1,:);
if(id~=objId), ls='-'; else
if(ind==objInd), ls='--'; else ls=':'; end; end
rp = {'lw',2,'color',col,'ls',ls,'rotate',0,'ellipse',0};
[hs,api]=imRectRot('pos',pos,'lims',lims,rp{:});
api.setSizLock( sizLk );
%如果标记了遮挡，则添加前缀OC-
if isocc == 1
socc = 'OC-';
else
socc = '';
end
if( static )
api.setPosLock(1);
ht=text(pos(1),pos(2)-10, [socc lbl]); hs=[hs ht]; %把'OC-'添加到标签上
set(ht,'color','w','FontSize',10,'FontWeight','bold');
else
api.setPosSetCb( @(pos) objSetPos(pos(1:4),id,ind,sid) );
%增加下面两行，使得在非播放的时候也显示标签
ht=text(pos(1),pos(2)-10, [socc lbl]); hs=[hs ht];
set(ht,'color','w','FontSize',10,'FontWeight','bold');
end
if( any(posv) )
rp={'LineWidth',2,'EdgeColor','y','LineStyle',':'};
hs = [hs rectangle('Position',posv,rp{:})];
end
end
function objSetPos( pos, id, ind, sid )
if(sid>=0), o=seqObjs(sid+1); pos=o.pos0-(o.pos-pos)/o.res; end
if(sid>0), dispApi.setOffset(sid); end
pos=constrainPos(pos); A=vbb('setVal',A,id,'pos',pos,ind+1);
if(objId==id), objS=min(objS,ind); objE=max(objE,ind); end
objSelect(id,ind); ind0=curInd+floor((ind-curInd)/skip)*skip;
ind1=objGrpInd(ind0,0); lks=zeros(ind1-ind0+1,1);
A = vbb('setVal',A,id,'lock',lks,ind0+1,ind1+1);
dispApi.requestUpdate();
end
end
function objNew()
[A,o]=vbb('emptyObj',A,curInd+1); t=get(pObj.hObjTp,'Value');
o.lbl=objTypes{t}; if(colType==0), t=o.id; end
col=rectCols(mod(t-1,size(rectCols,1))+1,:);
rp={'lw',2,'color',col,'ls','--','rotate',0,'ellipse',0};
pos=dispApi.newRect(lims,rp); o.pos=constrainPos(pos);
A=vbb('add',A,o); objSelect(o.id,curInd); dispApi.requestUpdate();
end
function objDel()
if(objId<=0), return; end; A=vbb('del',A,objId);
objId=-1; objSelect(-1); dispApi.requestUpdate();
end
function objMoveDown()
t = vbb('get',A,objId);
end
function objLockCurrent()
objSetLck(objId, objId);
end
function objSetLck( rng0, rng1 )
assert(objId>0); [lf,rt]=apiRng.getBnds(rng0~=rng1);
% set object locks accordingly
for i=lf:rt
ind0=curInd+(i-1)*skip; ind1=objGrpInd(ind0,0);
lks = [rng1(i); zeros(ind1-ind0,1)];
A=vbb('setVal',A,objId,'lock',lks,ind0+1,ind1+1);
end
s=max(objS,curInd); e=min(objE,curInd+skip*(nStepVis()-1));
if(~rng1(lf) || s==e), dispApi.requestUpdate(); return; end
% interpolate intermediate positions
o=vbb('get',A,objId,s+1,e+1); pos=[o.pos]; [n,k]=size(pos);
lks=[o.lock]; lks([1 end])=1; lks=find(lks);
for i=1:k, pos(:,i)=interp1(lks,pos(lks,i),1:n,'cubic'); end
pos=constrainPos(pos); A=vbb('setVal',A,objId,'pos',pos,s+1,e+1);
dispApi.requestUpdate();
end
function objSetRng( rng0, rng1 )
[lf0,rt0]=apiRng.getBnds( rng0 );
[lf1,rt1]=apiRng.getBnds( rng1 );
rt1=min(rt1,nStepVis()); assert(objId>0);
if(lf1~=lf0), objS=curInd+(lf1-1)*skip; end
if(rt1~=rt0), objE=curInd+(rt1-1)*skip; end
if(lf1~=lf0 || rt1~=rt0), objSelect(objId,objInd); end
dispApi.requestUpdate();
end
function objSetOcc( rng0, rng1 )
assert(objId>0); [lf,rt]=apiRng.getBnds(rng0~=rng1); assert(lf>0);
if(lf>1 && rng0(lf-1)==1), lf=lf-1; rng1(lf)=1; end %extend lf
if(rt<nStep && rng0(rt+1)==1), rt=rt+1; rng1(rt)=1; end %extend rt
for i=lf:rt
ind0=curInd+(i-1)*skip; ind1=objGrpInd(ind0,0);
occl = ones(ind1-ind0+1,1)*rng1(i);
A=vbb('setVal',A,objId,'occl',occl,ind0+1,ind1+1);
end; dispApi.requestUpdate();
end
function objSetFixed(), dispApi.requestUpdate(); end
function objSetType()
type = get(pObj.hObjTp,'Value');
if( strcmp(objTypes{type},'*new-type*') )
typeStr = inputdlg('Define new object type:');
if(isempty(typeStr) || any(strcmp(typeStr,objTypes)))
set(pObj.hObjTp,'Value',1); return; end
objTypes = [objTypes(1:end-1) typeStr objTypes(end)];
set(pObj.hObjTp,'String',objTypes,'Value',length(objTypes)-1);
end
if( objId>0 )
A = vbb('setVal',A,objId,'lbl',objTypes{type});
dispApi.requestUpdate();
end
end
function objToggle( d )
li=curInd; ri=curInd+skip*offset;
os=A.objLists{li+1}; if(isempty(os)), L=[]; else L=[os.id]; end
os=A.objLists{ri+1}; if(isempty(os)), R=[]; else R=[os.id]; end
[ids,R,L]=union(R,L); inds=[ones(1,numel(L))*li ones(1,numel(R))*ri];
keep=A.objHide(ids)==0; ids=ids(keep); inds=inds(keep);
n=length(ids); if(n==0), return; end
if(objId==-1), if(d==1), j=1; else j=n; end; else
j=find(ids==objId)+d; end
if(j<1 || j>n), objSelect(-1); else objSelect(ids(j),inds(j)); end
dispApi.requestUpdate();
end
function objSelect( id, ind )
if(objId>0), A=vbb('setRng',A,objId,objS+1,objE+1); end
if(id==-1), [objId,objS,objE,objInd]=deal(-1); return; end
objS=vbb('getVal',A,id,'str')-1; objE=vbb('getVal',A,id,'end')-1;
objId=id; objInd=ind;
end
%执行切分操作
function objSplit()
assert(objId>0);
o1 = vbb( 'get', A, objId, objS+1, curInd);
o2 = vbb( 'get', A, objId, curInd+1);
A = vbb( 'del', A, objId);
objId = -1;
dispApi.requestUpdate();
o1.id = -1;
o2.id = -1;
A = vbb( 'add', A, o1 );
A = vbb( 'add', A, o2 );
dispApi.requestUpdate();
end
function ind1 = objGrpInd( ind0, useExtended )
ind1 = min(ind0+skip-1,curInd+dispApi.nFrameRt());
if(~useExtended); ind1=min(ind1,objE); end
end
function n = nStepVis()
n = min(nStep,floor(dispApi.nFrameRt()/skip+1));
end
function pos = constrainPos( pos )
p=pos; p(:,3:4)=max(1,p(:,3:4)); r=max(1,siz0./p(:,3:4));
dy=(r(:,2)-1).*p(:,4); p(:,2)=p(:,2)-dy/2; p(:,4)=p(:,4)+dy;
dx=(r(:,1)-1).*p(:,3); p(:,1)=p(:,1)-dx/2; p(:,3)=p(:,3)+dx;
s=p(:,1:2); e=s+p(:,3:4);
for j=1:2, s(:,j)=min(max(s(:,j),lims(j)),lims(j+2)-siz0); end
for j=1:2, e(:,j)=max(min(e(:,j),lims(j+2)),s(:,j)+siz0); end
pos = [s e-s];
end
function A1 = annForSave()
if(objId==-1), A1=A; else A1=vbb('setRng',A,objId,objS+1,objE+1); end
end
function annSaved(), assert(~isempty(A)); A.altered=false; end
end
function api = dispMakeApi()
% variables
[sr, info, looping, nPlay, replay, needUpdate, dispMode, ...
timeDisp, hImLf, hImRt, hImSeq, hObjCur] = deal([]);
% callbacks
set( pRt.slOffst, 'Callback', @(h,e) setOffset() );
set( pRt.edSkip, 'Callback', @(h,e) setSkip() );
set( pLf.fpsInd, 'Callback', @(h,e) setFps() );
set( pLf.btnRep, 'Callback', @(h,e) setPlay('replayLf') );
set( pRt.btnRep, 'Callback', @(h,e) setPlay('replayRt') );
set( pRt.btnGo, 'Callback', @(h,e) setFrame('go') );
set( pLf.hFrInd, 'Callback', @(h,e) setFrame() );
set( pLf.btn(1), 'Callback', @(h,e) setPlay(-inf) );
set( pLf.btn(2), 'Callback', @(h,e) setFrame('-') );
set( pLf.btn(3), 'Callback', @(h,e) setPlay(0) );
set( pLf.btn(4), 'Callback', @(h,e) setFrame('+') );
set( pLf.btn(5), 'Callback', @(h,e) setPlay(+inf) );
% create api
api = struct( 'requestUpdate',@requestUpdate, 'init',@init, ...
'newRect',@newRect, 'setOffset',@setOffset, ...
'nFrame',@nFrame, 'nFrameRt', @nFrameRt, 'getImg',@getImg, ...
'width',@width, 'height',@height, 'setPlay', @setPlay, 'setFrame', @setFrame );
function init( sr1 )
if(isstruct(sr)), sr=sr.close(); end; delete(hObjCur);
[sr, info, looping, nPlay, replay, needUpdate, dispMode, ...
timeDisp, hImLf, hImRt, hImSeq, hObjCur] = deal([]);
nPlay=0; replay=0; dispMode=0; looping=1; curInd=0;
needUpdate=1; sr=sr1; skip=1;
if(isstruct(sr)), info=sr.getinfo(); else
info=struct('numFrames',0,'width',0,'height',0,'fps',25); end
if(fps), info.fps=fps; end
setOffset(nStep-1); setSkip(skip0); setFps(info.fps);
hs = [pLf.hAx pRt.hAx pSeq.hAx];
for h=hs; cla(h); set(h,'XTick',[],'YTick',[]); end
set([pLf.hCn pRt.hCn],'Enable',enStr{(nFrame>0)+1});
set([pLf.hFrInd pRt.hFrInd],'String','0');
set([pLf.hFrNum pRt.hFrNum],'String',[' / ' int2str(nFrame)]);
looping=0; requestUpdate();
end
function dispLoop()
if( looping ), return; end; looping=1; k=0;
while( 1 )
% if vid not loaded nothing to display
if( nFrame==0 ), looping=0; return; end
% increment/decrement curInd/nPlay appropriately
if( nPlay~=0 )
needUpdate=1; fps=info.fps; t=clock(); t=t(6)+60*t(5);
del=round(fps*(t-timeDisp)); timeDisp=timeDisp+del/fps;
if(nPlay>0), del=min(del,nPlay); else del=max(-del,nPlay); end
nPlay=nPlay-del; if(~replay), curInd=curInd+del; end
if(del==0), drawnow(); continue; end
end
% update display if necessary
k=k+1; if(0 && ~needUpdate), fprintf('%i draw events.\n',k); end
if( ~needUpdate ), looping=0; return; end
updateDisp(); filesApi.backupAnn(); drawnow();
end
end
function updateDisp()
% delete old objects
delete(hObjCur); hObjCur=[];
% possibly switch display modes
if( dispMode~=0 && nPlay==0 )
needUpdate=1; dispMode=0; replay=0;
elseif( abs(dispMode)==1 )
needUpdate=1; dispMode=dispMode*2;
if(dispMode<0), hImMsk=hImRt; else hImMsk=hImLf; end
I=get(hImMsk,'CData'); I(:)=100; set(hImMsk,'CData',I);
I=get(hImSeq,'CData'); I(:)=100; set(hImSeq,'CData',I);
objApi.prepPlay();
else
needUpdate=0;
end
if(dispMode==0), seqI = objApi.prepSeq(); end
% display left panel
if( dispMode<=0 )
set( hFig, 'CurrentAxes', pLf.hAx );
ind=curInd; if(replay), ind=ind-nPlay; end
hImLf = imageFast( hImLf, getImg(ind) );
set( pLf.hFrInd, 'String', int2str(ind+1) );
hObjCur=[hObjCur objApi.drawRects('panelLf',ind)];
end
% display right panel
if( dispMode>=0 )
set( hFig, 'CurrentAxes', pRt.hAx );
ind=curInd+offset*skip; if(replay), ind=ind-nPlay; end
hImRt = imageFast( hImRt, getImg(ind) );
set( pRt.hFrInd, 'String', int2str(ind+1) );
hObjCur=[hObjCur objApi.drawRects('panelRt',ind)];
end
% display seq panel
if( dispMode==0 )
set( hFig, 'CurrentAxes', pSeq.hAx );
hImSeq = imageFast( hImSeq, seqI );
hObjCur=[hObjCur objApi.drawRects('objSeq',[])];
end
% adjust play controls
set( pLf.btnRep, 'Enable', enStr{(curInd>0)+1} );
set( pLf.btn(1:2), 'Enable', enStr{(curInd>0)+1} );
set( pLf.btn(4:5), 'Enable', enStr{(offset*skip<nFrameRt())+1});
function hImg = imageFast( hImg, I )
if(isempty(hImg)), hImg=image(I); axis off; else
set(hImg,'CData',I); end
end
end
function pos = newRect( lims, rp )
% get new rectangle, extract pos (disable controls temporarily)
hs=[pObj.hCn pLf.hCn pRt.hCn pMenu.hCn];
en=get(hs,'Enable'); set(hs,'Enable','off');
[hR,api]=imRectRot('hParent',pLf.hAx,'lims',lims,rp{:});
hObjCur=[hObjCur hR]; pos=api.getPos(); pos=pos(1:4);
for i=1:length(hs); set(hs(i),'Enable',en{i}); end
requestUpdate();
end
function requestUpdate( clearHs )
if(nargin==0 || isempty(clearHs)), clearHs=0; end
if(clearHs), [hImLf, hImRt, hImSeq]=deal([]); end
needUpdate=true; dispLoop();
end
function setSkip( skip1 )
if(nargin==0), skip1=round(str2double(get(pRt.edSkip,'String'))); end
if(~isnan(skip1)), skip=max(1,min(skip1,maxSkip)); end
if(nFrame>0), skip=min(skip,floor(nFrameRt()/offset)); end
set( pRt.stSkip, 'String', 'zoom: 1 / ');
set( pRt.edSkip, 'String', int2str(skip) );
set( pRt.stOffst,'String', ['+' int2str(offset*skip)] );
setPlay(0);
end
function setOffset( offset1 )
if( nargin==1 )
if(strcmp(offset1,'-'))
if(offset > 1), offset = offset - 1; end
elseif(strcmp(offset1,'+'))
if(offset < 15), offset = offset + 1; end
else
offset=offset1;
end
else
offset=round(get(pRt.slOffst,'Value'));
end
if(nFrame>0), offset=min(offset,floor(nFrameRt()/skip)); end
set( pRt.slOffst, 'Value', offset );
set( pRt.stOffst, 'String', ['+' int2str(offset*skip)] );
setPlay(0);
end
function setFrame( f )
if(nargin==0), f=round(str2double(get(pLf.hFrInd,'String'))); end
if(strcmp(f,'-')), f=curInd-skip+1; end
if(strcmp(f,'+')), f=curInd+skip+1; end
if(strcmp(f,'go')), f=curInd+skip*offset+1; end
if(~isnan(f)), curInd=max(0,min(f-1,nFrame-skip*offset-1)); end
set(pLf.hFrInd,'String',int2str(curInd+1)); setPlay(0);
end
function setPlay( type )
switch type
case 'replayLf'
nPlay=min(curInd,repLen*info.fps);
dispMode=-1; replay=1;
case 'replayRt'
nPlay=min(skip*offset,nFrameRt());
dispMode=1; replay=1;
otherwise
nPlay=type; dispMode=-1; replay=0;
if(nPlay<0), nPlay=max(nPlay,-curInd); end
if(nPlay>0), nPlay=min(nPlay,nFrameRt-offset*skip); end
end
t=clock(); t=t(6)+60*t(5); timeDisp=t; requestUpdate();
end
function setFps( fps )
if(nargin==0), fps=round(str2double(get(pLf.fpsInd,'String'))); end
if(isnan(fps)), fps=info.fps; else fps=max(1,min(fps,99999)); end
set(pLf.fpsInd,'String',int2str(fps)); info.fps=fps; setPlay(0);
end
function I=getImg(f)
sr.seek(f); I=sr.getframe(); if(ismatrix(I)), I=I(:,:,[1 1 1]); end
end
function w=width(), w=info.width; end
function h=height(), h=info.height; end
function n=nFrame(), n=info.numFrames; end
function n=nFrameRt(), n=nFrame-1-curInd; end
end
function api = filesMakeApi()
% variables
[fVid, fAnn, tSave, tSave1] = deal([]);
% callbacks
set( pMenu.hVidOpn, 'Callback', @(h,e) openVid() );
set( pMenu.hVidCls, 'Callback', @(h,e) closeVid() );
set( pMenu.hAnnNew, 'Callback', @(h,e) newAnn() );
set( pMenu.hAnnOpn, 'Callback', @(h,e) openAnn() );
set( pMenu.hAnnSav, 'Callback', @(h,e) saveAnn() );
set( pMenu.hAnnCls, 'Callback', @(h,e) closeAnn() );
% create api
api = struct('closeVid',@closeVid, 'backupAnn',@backupAnn, ...
'openVid',@openVid, 'openAnn',@openAnn );
function updateMenus()
m=pMenu; en=enStr{~isempty(fVid)+1}; nm='VBB Labeler';
set([m.hVidCls m.hAnnNew m.hAnnOpn],'Enable',en);
en=enStr{~isempty(fAnn)+1}; set([m.hAnnSav m.hAnnCls],'Enable',en);
if(~isempty(fVid)), [~,nm1]=fileparts(fVid); nm=[nm ' - ' nm1]; end
set(hFig,'Name',nm); objApi.init(); dispApi.requestUpdate();
end
function closeVid()
fVid=[]; if(~isempty(fAnn)), closeAnn(); end
dispApi.init([]); updateMenus();
end
function openVid( f )
if( nargin>0 )
[d,f]=fileparts(f); if(isempty(d)), d='.'; end;
d=[d '/']; f=[f '.seq'];
else
if(isempty(fVid)), d='.'; else d=fileparts(fVid); end
[f,d]=uigetfile('*.seq','Select video',[d '/*.seq']);
end
if( f==0 ), return; end; closeVid(); fVid=[d f];
try
s=0; sr=seqIo(fVid,'r',maxCache); s=1;
dispApi.init(sr); updateMenus();
catch er
errordlg(['Failed to load: ' fVid '. ' er.message],'Error');
if(s); closeVid(); end; return;
end
end
function closeAnn()
assert(~isempty(fAnn)); A1=objApi.annForSave();
if( ~isempty(A1) && A1.altered )
qstr = 'Save Current Annotation?';
button = questdlg(qstr,'Exiting','yes','no','yes');
if(strcmp(button,'yes')); saveAnn(); end
end
A=[]; [fAnn,tSave,tSave1]=deal([]); updateMenus();
end
function openAnn( f )
assert(~isempty(fVid)); if(~isempty(fAnn)), closeAnn(); end
if( nargin>0 )
[d,f,e]=fileparts(f); if(isempty(d)), d='.'; end; d=[d '/'];
if(isempty(e) && exist([d f '.txt'],'file')), e='.txt'; end
if(isempty(e) && exist([d f '.vbb'],'file')), e='.vbb'; end
f=[f e];
else
[f,d]=uigetfile('*.vbb;*.txt','Select Annotation',fVid(1:end-4));
end
if( f==0 ), return; end; fAnn=[d f];
try
if(~exist(fAnn,'file'))
A=vbb('init',dispApi.nFrame()); vbb('vbbSave',A,fAnn);
else
A=vbb( 'vbbLoad', fAnn ); eMsg='Annotation/video mismatch.';
if(A.nFrame~=dispApi.nFrame()), error(eMsg); end
end
catch er
errordlg(['Failed to load: ' fAnn '. ' er.message],'Error');
A=[]; fAnn=[]; return;
end
tSave=clock(); tSave1=tSave; updateMenus();
end
function saveAnn()
A1=objApi.annForSave(); if(isempty(A1)), return; end
[f,d]=uiputfile('*.vbb;*.txt','Select Annotation',fAnn);
if( f==0 ), return; end; fAnn=[d f]; tSave=clock; tSave1=tSave;
if(exist(fAnn,'file')), copyfile(fAnn,vbb('vbbName',fAnn,1)); end
vbb('vbbSave',A1,fAnn); objApi.annSaved();
end
function newAnn()
if(~isempty(fAnn)), closeAnn(); end; fAnn=[fVid(1:end-3) 'vbb'];
assert(~isempty(fVid)); A=vbb('init',dispApi.nFrame());
updateMenus();
end
function backupAnn()
if(isempty(tSave) || etime(clock,tSave)<30), return; end
A1=objApi.annForSave(); if(isempty(A1)), return; end
tSave=clock(); timeStmp=etime(tSave,tSave1)>60*5;
if(timeStmp), tSave1=tSave; fAnn1=fAnn; else
fAnn1=[fAnn(1:end-4) '-autobackup' fAnn(end-3:end)]; end
vbb( 'vbbSave', A1, fAnn1, timeStmp );
end
end
end
function api = selectorRange( hParent, pos, n, col0, col1 )
% Graphical way of selecting ranges from the sequence {1,2,...,n}.
%
% The result of the selection is an n element vector rng in {0,1}^n that
% indicates whether each element is selected (or in the terminology below
% ON/OFF). Particularly efficient if the ON cells in the resulting rng can
% be grouped into a few continguous blocks.
%
% Creates n individual cells, 1 per element. Each cell is either OFF/ON,
% denoted by colors col0/col1. Each cell can be clicked in three discrete
% locations: LEFT/MID/RIGHT: (1) Clicking a cell in the MID location
% toggles it ON/OFF. (2) Clicking an ON cell i turns a number of cells OFF,
% determined in the following manner. Let [lf,rt] denote the contiguous
% block of ON cells containing i. Clicking on the LEFT of cell i shrinks
% the contiguous block of ON cells to [i,rt] (ie cells [lf,i-1] are truned
% OFF). Clicking on the RIGHT of cell i shrinks the contiguous block to
% [lf,i] (ie cells [i+1,rt] are truned OFF). (3) In a similar manner
% clicking an OFF cell i turns a number of cells ON. Clicking on the LEFT
% extends the closest contiguous block to the right of i, [lf,rt], to
% [i,rt]. Clicking on the RIGHT extends the closest contiguous block the
% the left of i, [lf,rt], to [lf,i]. To better understand the interface
% simply run the example below.
%
% Locks can be set to limit how the range can change. If setLockCen(1) is
% set, the user cannot toggle individual element by clicking the MIDDLE
% location (this prevents contiguous blocks from being split). setLockLf/Rt
% can be used to ensure the overall range [lf*,rt*], where lf*=min(rng) and
% rt*=max(rng) cannot change in certain ways (see below). Also use enable()
% to enable only portion of cells for interaction.
%
% USAGE
% api = selectorRange( hParent, pos, n, [col0], [col1] )
%
% INPUTS
% hParent - object parent, either a figure or a uipanel
% pos - guis pos vector [xMin yMin width height]
% n - sequence size
% col0 - [.7 .7 .7] 1x3 array: color for OFF cells
% col1 - [.7 .9 1] 1x3 array: color for ON cells
%
% OUTPUTS
% api - interface allowing access to created gui object
% .delete() - use to delete obj, syntax is 'api.delete()'
% .enable(en) - enable given range (or 0/1 to enable/disable all)
% .setPos(pos) - set position of range selector in the figure
% .getRng() - get range: returns n elt range vector in {0,1}^n
% .setRng(rng) - set range to specified rng (n elmt vector)
% .getBnds([rng]) - get left-most/right-most (lf,rt) bounds of range
% .setRngChnCb(f) - whenever range changes, calls f(rngOld,rngNew)
% .setLockCen(v) - 0/1 enables toggling individual elements
% .setLockLf(v) - []:none; 0:locked; -1: only shrink; +1: only ext
% .setLockRt(v) - []:none; 0:locked; -1: only shrink; +1: only ext
%
% EXAMPLE
% h=figure(1); clf; pos=[10 20 500 15]; n=10;
% api = selectorRange( h, pos, n );
% rng=zeros(1,n); rng(3:7)=1; api.setRng( rng );
% f = @(rO,rN) disp(['new range= ' int2str(rN)]);
% api.setRngChnCb( f );
%
% See also imRectRot, uicontrol
narginchk(3,5);
if(nargin<4 || isempty(col0)), col0=[.7 .7 .7]; end
if(nargin<5 || isempty(col1)), col1=[.7 .9 1]; end
% globals (n, col0, col1 are implicit globals)
lockLf=-2; lockRt=-2; lockCen=0; en=1;
[Is,hAx,hImg,rangeChnCb,rng]=deal([]);
% set initial position
rng=ones(1,n); setPos( pos );
% create api
api = struct('delete',@delete1, 'enable',@enable, 'setPos',@setPos, ...
'getRng',@getRng, 'setRng',@setRng, 'getBnds',@getBnds, ...
'setRngChnCb',@setRngChnCb, 'setLockCen',@(v) setLock(v,0), ...
'setLockLf',@(v) setLock(v,-1), 'setLockRt',@(v) setLock(v,1) );
function setPos( pos )
% create images for virtual buttons (Is = h x w x rgb x enable)
w=max(3,round(pos(3)/n)); wSid=floor(w/3); wMid=w-wSid*2;
h=max(4,round(pos(4))); cols=permute([col0; col1],[1 3 2]);
IsSid=zeros(h-2,wSid,3,2); IsMid=zeros(h-2,wMid,3,2);
for i=1:2, IsSid(:,:,:,i)=repmat(cols(i,:,:),[h-2 wSid 1]); end
for i=1:2, IsMid(:,:,:,i)=repmat(cols(i,:,:),[h-2 wMid 1]); end
IsSid(:,1,:,:)=0; Is=[IsSid IsMid IsSid(:,end:-1:1,:,:)];
Is=padarray(Is,[1 0 0 0],mean(col0)*.8,'both'); pos(3)=w*n;
% create new axes and image objects
delete1(); units=get(hParent,'units'); set(hParent,'Units','pixels');
hAx=axes('Parent',hParent,'Units','pixels','Position',pos);
hImg=image(zeros(h,w*n)); axis off; set(hParent,'Units',units);
set(hImg,'ButtonDownFcn',@(h,e) btnPressed()); draw();
end
function btnPressed()
if(length(en)==1 && en==0), return; end
x=get(hAx,'CurrentPoint'); w=size(Is,2);
x=ceil(min(1,max(eps,x(1)/w/n))*3*n);
btnId=ceil(x/3); btnPos=x-btnId*3+1;
assert( btnId>=1 && btnId<=n && btnPos>=-1 && btnPos<=1 );
if(length(en)==2 && (btnId<en(1) || btnId>en(2))), return; end
% compute what contiguous block of cells to alter
if( btnPos==0 ) % toggle center
if( lockCen ), return; end
s=btnId; e=btnId; v=~rng(btnId);
elseif( btnPos==-1 && ~rng(btnId) )
rt = find(rng(btnId+1:end)) + btnId;
if(isempty(rt)), return; else rt=rt(1); end
s=btnId; e=rt-1; v=1; %extend to left
elseif( btnPos==1 && ~rng(btnId) )
lf = btnId - find(fliplr(rng(1:btnId-1)));
if(isempty(lf)), return; else lf=lf(1); end
s=lf+1; e=btnId; v=1; %extend to right
elseif( btnPos==-1 && rng(btnId) )
if(btnId==1 || ~rng(btnId-1)), return; end
lf=btnId-find([fliplr(rng(1:btnId-1)==0) 1])+1; lf=lf(1);
s=lf; e=btnId-1; v=0; %shrink to right
elseif( btnPos==1 && rng(btnId) )
if(btnId==n || ~rng(btnId+1)), return; end
rt = find([rng(btnId+1:end)==0 1]) + btnId - 1; rt=rt(1);
s=btnId+1; e=rt; v=0; %shrink to left
end
assert( all(rng(s:e)~=v) );
% apply locks preventing extension/shrinking beyond endpoints
[lf,rt] = getBnds();
if( lf==-1 && (any(lockLf==[0 -1])||any(lockRt==[0 -1]))), return; end
if( v==1 && e<lf && any(lockLf==[0 -1]) ), return; end
if( v==1 && s>rt && any(lockRt==[0 -1]) ), return; end
if( v==0 && s==lf && any(lockLf==[0 1]) ), return; end
if( v==0 && e==rt && any(lockRt==[0 1]) ), return; end
% update rng, redraw and callback
rng0=rng; rng(s:e)=v; draw();
if(~isempty(rangeChnCb)), rangeChnCb(rng0,rng); end
end
function draw()
% construct I based on hRng and set image
h=size(Is,1); w=size(Is,2); I=zeros(h,w*n,3);
if(length(en)>1 || en==1), rng1=rng; else rng1=zeros(1,n); end
for i=1:n, I(:,(1:w)+(i-1)*w,:)=Is(:,:,:,rng1(i)+1); end
if(ishandle(hImg)), set(hImg,'CData',I); end
end
function setRng( rng1 )
assert( length(rng1)==n && all(rng1==0 | rng1==1) );
if(any(rng~=rng1)), rng=rng1; draw(); end
end
function [lf,rt] = getBnds( rng1 )
if(nargin==0 || isempty(rng1)); rng1=rng; end
[~,lf]=max(rng1); [v,rt]=max(fliplr(rng1)); rt=n-rt+1;