void PDFwin::pageChanged()
{
int ww=w()-2;
int hh=h()-2;
if(!mModel) return;
if(!mModel->cacheValid(ww, hh, mCurrPage))
{
mState="load";
redraw();
Fl::check();
mState="none";
}
CImage* bmp_orig=mModel->getPage(ww, hh, mCurrPage);
if(mLayout->findCheckButton("Use automatic segmentation")->value())
{
CImage temp;
temp.CopyFrom(*bmp_orig);
#ifdef DEBUG_FONT_DETECTION
CImage* bmp=bmp_orig;
#else
CImage* bmp=&temp;
#endif
{
intmatrixn& textCache=*mModel->_textCache[mCurrPage];
#ifdef USE_FONT_DETECTION
const bool drawLetterBoundingBox=true;
const bool drawDetectedSpace=true;
#else
const bool drawLetterBoundingBox=false;
const bool drawDetectedSpace=false;
#endif
if(drawLetterBoundingBox)
{
CImagePixel ip(bmp);
for(int i=0; i<textCache.rows()-1; i++)
{
int* info=textCache[i];
int c=info[TC_c];
int x=info[TC_x];
int y=info[TC_y];
int w=info[TC_w];
int h=info[TC_h];
int fx=info[TC_fx];
int fy=info[TC_fy];
if (std::abs(y-textCache[i+1][TC_y])<=3) // draw excluding trailing space
{
#ifdef DEBUG_FONT_DETECTION
ip.DrawLineBox(TRect(x-fx,y-fy, x-fx+w, y-fy+h), CPixelRGB8(0,0,0));
#else
ip.DrawBox(TRect(x-fx,y-fy, x-fx+w, y-fy+h), CPixelRGB8(0,0,0));
#endif
ip.DrawHorizLine(x, y, w, CPixelRGB8(255,0,0));
}
// else printf("%d %d %d %d\n", x,y, textCache[i+1][TC_x], textCache[i+1][TC_y]);
}
}
FlLayout* layout=mLayout->findLayout("Automatic segmentation");
double min_text_gap=layout->findSlider("MIN text-gap")->value();
if(drawDetectedSpace)
{
CImagePixel ip(bmp);
for(int i=1; i<textCache.rows(); i++)
{
int* pinfo=textCache[i-1];
int* info=textCache[i];
if(pinfo[TC_y]==info[TC_y])
{
int prevEnd=pinfo[TC_x]-pinfo[TC_fx]+pinfo[TC_w]-1;
int curStart=info[TC_x]-info[TC_fx];
int bottom=MIN(pinfo[TC_y]-pinfo[TC_fy], info[TC_y]-info[TC_fy]);
int top=MAX(pinfo[TC_y]-pinfo[TC_fy]+pinfo[TC_h], info[TC_y]-info[TC_fy]+info[TC_h]);
int space_thr=MAX(pinfo[TC_h], pinfo[TC_w]);
space_thr=MAX(space_thr, info[TC_h]);
space_thr=MAX(space_thr, info[TC_w]);
space_thr*=min_text_gap;
if(curStart-prevEnd<=space_thr && curStart>prevEnd)
{
// mark as space.
ip.DrawBox(TRect(prevEnd, bottom, curStart, top), CPixelRGB8(0,0,0));
}
}
}
}
}
SummedAreaTable t(*bmp);//bmp->getWidth(), bmp->getHeight(), bmp->getDataPtr(), bmp->getRowSize());
FlLayout* layout=mLayout->findLayout("Automatic segmentation");
double min_gap_percentage=layout->findSlider("MIN gap")->value();
double margin_percentage=layout->findSlider("Margin")->value();
int thr_white=layout->findSlider("white point")->value();
double max_width=1.0/layout->findSlider("N columns")->value();
double cropT=layout->findSlider("Crop T")->value()/100.0;
double cropB=layout->findSlider("Crop B")->value()/100.0;
double cropL=layout->findSlider("Crop L")->value()/100.0;
double cropR=layout->findSlider("Crop R")->value()/100.0;
// TRect domain(0,0, bmp->GetWidth(), bmp->GetHeight());
TRect domain(cropL*bmp->GetWidth(),cropT*bmp->GetHeight(), (1-cropR)*bmp->GetWidth()
, (1-cropB)*bmp->GetHeight());
ImageSegmentation s(t, true, domain, 0, min_gap_percentage, thr_white);
s.segment();
std::list<TRect> results;
s.getResult(results, max_width, margin_percentage);
/*
std::list<TRect> results;
int min_gap=int((double)bmp->GetWidth()*min_gap_percentage*0.01 +0.5);
int min_box_size=100; // 10�ȼ������� �ڽ��� ������.
CImagePixel orig(bmp_orig);
std::list<index2> LRcorners;
std::list<index2> ULcorners;
for(int i=0, ni=bmp->GetWidth()-min_box_size-min_gap; i<ni; i++)
{
for(int j=0, nj=bmp->GetHeight()-min_box_size-min_gap; j<nj; j++)
{
// search for LR corner
TRect outerBox(i, j, i+min_box_size+min_gap, j+min_box_size+min_gap);
TRect innerBox(i, j, i+min_box_size, j+min_box_size);
int sum1=t.sum(outerBox);
int sum2=t.sum(innerBox);
int area=outerBox.Width()*outerBox.Height()-
innerBox.Width()*innerBox.Height();
if(sum1-sum2 >= thr_white*area)
{
//orig.SetPixel(i+min_box_size+min_gap/2,j+min_box_size+min_gap/2,CPixelRGB8(255,0,0));
LRcorners.push_back(index2(i+min_box_size+min_gap/2,j+min_box_size+min_gap/2));
}
// search for UL corner
{
TRect outerBox(i, j, i+min_box_size+min_gap, j+min_box_size+min_gap);
TRect innerBox(i+min_gap, j+min_gap, i+min_box_size+min_gap, j+min_box_size+min_gap);
int sum1=t.sum(outerBox);
int sum2=t.sum(innerBox);
int area=outerBox.Width()*outerBox.Height()-
innerBox.Width()*innerBox.Height();
if(sum1-sum2 >= thr_white*area)
{
// orig.SetPixel(i+min_gap/2,j+min_gap/2,CPixelRGB8(0,0,255));
ULcorners.push_back(index2(i+min_gap/2,j+min_gap/2));
}
}
}
}
{
std::list<index2>::iterator i;
for(i=ULcorners.begin(); i!=ULcorners.end(); ++i)
{
orig.SetPixel((*i).x(), (*i).y(), CPixelRGB8(0,0,255));
}
}
*/
mRects.clear();
int x=toWindowCoord(0,0).x;
int y=toWindowCoord(0,0).y;
std::list<TRect>::iterator i;
for(i=results.begin(); i!=results.end(); i++)
{
mRects.push_back(SelectionRectangle());
mSelectedRect=mRects.end();
mSelectedRect--;
SelectionRectangle& mRect=selectedRect();
mRect.p1=toDocCoord((*i).left+x, (*i).top+y);
mRect.p2=toDocCoord((*i).right+x, (*i).bottom+y);
mRect.updateScreenCoord(*this);
}
}
}
