void transform( qiv_image *q, enum Orientation orientation) {
switch (orientation) {
default: return;
case HFLIP: flipH(q); snprintf(infotext, sizeof infotext, "(Flipped horizontally)"); break;
case VFLIP: flipV(q); snprintf(infotext, sizeof infotext, "(Flipped vertically)"); break;
case ROT_180: rot180(q); snprintf(infotext, sizeof infotext, "(Turned upside down)"); break;
case TRANSPOSE: transpose(q); swapWH(q); snprintf(infotext, sizeof infotext, "(Transposed)"); break;
case ROT_90: rot90(q); swapWH(q); snprintf(infotext, sizeof infotext, "(Rotated left)"); break;
case TRANSVERSE: transpose(q); rot180(q); swapWH(q); snprintf(infotext, sizeof infotext, "(Transversed)"); break;
case ROT_270: rot270(q); swapWH(q); snprintf(infotext, sizeof infotext, "(Rotated left)"); break;
}
}
void ConvolutionalLayer::feedBackward(
vector<mat>& errors, const vector<mat>& deltas) {
// Since nInputs == nOutputs for subsampling layer, I just use N.
size_t nInputs = getNumInputMaps(),
nOutputs = getNumOutputMaps();
SIZE s = this->get_input_img_size();
size_t batch_size = deltas[0].getCols();
vector<vector<mat> > oImgs(nOutputs), iImgs(nInputs);
for (size_t j=0; j<nOutputs; ++j)
oImgs[j] = reshapeVectors2Images(deltas[j], this->get_output_img_size());
for (size_t i=0; i<nInputs; ++i)
iImgs[i].resize(batch_size);
for (size_t k=0; k<batch_size; ++k) {
for (size_t i=0; i<nInputs; ++i) {
iImgs[i][k].resize(s.m, s.n, 0);
for (size_t j=0; j<nOutputs; ++j)
iImgs[i][k] += convn(oImgs[j][k], rot180(_kernels[i][j]), "full");
}
}
if (errors.size() != nInputs)
errors.resize(nInputs);
for (size_t i=0; i<nInputs; ++i)
errors[i] = reshapeImages2Vectors(iImgs[i]);
}
inline
T Image2D<T>::rotN90 (int row, int col, int N) // Generalazed rotation by N*90 degree
{
if (N==0) return rot000(row,col);
else if (N==1) return rot090(row,col);
else if (N==2) return rot180(row,col);
else if (N==3) return rot270(row,col);
else return rot000(row,col);
}
void ConvolutionalLayer::backPropagate(vector<mat>& errors, const vector<mat>& fins,
const vector<mat>& fouts, float learning_rate) {
size_t nInputs = getNumInputMaps(),
nOutputs = getNumOutputMaps();
size_t batch_size = fins[0].getCols();
// In the following codes, the iteration index i and j stands for
// i : # of input features. i = 0 ~ nInputs - 1
// j : # of output features. j = 0 ~ nOutputs - 1
vector<mat> deltas(nOutputs);
for (size_t j=0; j<nOutputs; ++j)
deltas[j] = fouts[j] & ( 1.0f - fouts[j] ) & errors[j];
this->feedBackward(errors, deltas);
assert(learning_rate > 0);
float lr = learning_rate / batch_size;
// iImgs represents the input images.
// oImgs represents the output images. (Before sigmoid or any other activation function)
vector<vector<mat> > iImgs(nInputs), oImgs(nOutputs);
for (size_t i=0; i<nInputs; ++i)
iImgs[i] = reshapeVectors2Images(fins[i], _input_img_size);
for (size_t j=0; j<nOutputs; ++j)
oImgs[j] = reshapeVectors2Images(deltas[j], this->get_output_img_size());
// Update kernels with learning rate
for (size_t k=0; k<batch_size; ++k) {
for (size_t j=0; j<nOutputs; ++j) {
for (size_t i=0; i<nInputs; ++i)
_kernels[i][j] -= convn(rot180(iImgs[i][k]), oImgs[j][k], "valid_shm") * lr;
_bias[j] -= sum_all(oImgs[j][k]) * lr;
}
}
}
/*
In the constructor, we just pass the standard parameters on to
QWidget.
The menu uses a single slot to simplify the process of adding
more items to the options menu.
*/
ImageViewer::ImageViewer( QWidget *parent, const char *name, int wFlags )
: QWidget( parent, name, wFlags ),
conversion_flags( PreferDither ),
helpmsg( 0 )
{
pickx = -1;
picky = -1;
clickx = -1;
clicky = -1;
alloc_context = 0;
menubar = new QMenuBar(this);
menubar->setSeparator( QMenuBar::InWindowsStyle );
QStrList fmt = QImage::outputFormats();
saveimage = new QPopupMenu( menubar );
savepixmap = new QPopupMenu( menubar );
for (const char* f = fmt.first(); f; f = fmt.next()) {
saveimage->insertItem( f );
savepixmap->insertItem( f );
}
connect( saveimage, SIGNAL(activated(int)), this, SLOT(saveImage(int)) );
connect( savepixmap, SIGNAL(activated(int)), this, SLOT(savePixmap(int)) );
file = new QPopupMenu( menubar );
menubar->insertItem( "&File", file );
file->insertItem( "&New window", this, SLOT(newWindow()), CTRL+Key_N );
file->insertItem( "&Open...", this, SLOT(openFile()), CTRL+Key_O );
si = file->insertItem( "Save image", saveimage );
sp = file->insertItem( "Save pixmap", savepixmap );
file->insertSeparator();
file->insertItem( "E&xit", qApp, SLOT(quit()), CTRL+Key_Q );
edit = new QPopupMenu( menubar );
menubar->insertItem( "&Edit", edit );
edit->insertItem("&Copy", this, SLOT(copy()), CTRL+Key_C);
edit->insertItem("&Paste", this, SLOT(paste()), CTRL+Key_V);
edit->insertSeparator();
edit->insertItem("&Horizontal flip", this, SLOT(hFlip()), ALT+Key_H);
edit->insertItem("&Vertical flip", this, SLOT(vFlip()), ALT+Key_V);
edit->insertItem("&Rotate 180", this, SLOT(rot180()), ALT+Key_R);
edit->insertSeparator();
edit->insertItem("&Text...", this, SLOT(editText()));
edit->insertSeparator();
t1 = edit->insertItem( "Convert to &1 bit", this, SLOT(to1Bit()) );
t8 = edit->insertItem( "Convert to &8 bit", this, SLOT(to8Bit()) );
t32 = edit->insertItem( "Convert to &32 bit", this, SLOT(to32Bit()) );
options = new QPopupMenu( menubar );
menubar->insertItem( "&Options", options );
ac = options->insertItem( "AutoColor" );
co = options->insertItem( "ColorOnly" );
mo = options->insertItem( "MonoOnly" );
options->insertSeparator();
fd = options->insertItem( "DiffuseDither" );
bd = options->insertItem( "OrderedDither" );
td = options->insertItem( "ThresholdDither" );
options->insertSeparator();
ta = options->insertItem( "ThresholdAlphaDither" );
ba = options->insertItem( "OrderedAlphaDither" );
fa = options->insertItem( "DiffuseAlphaDither" );
options->insertSeparator();
ad = options->insertItem( "PreferDither" );
dd = options->insertItem( "AvoidDither" );
options->insertSeparator();
ss = options->insertItem( "Smooth scaling" );
cc = options->insertItem( "Use color context" );
if ( QApplication::colorSpec() == QApplication::ManyColor )
options->setItemEnabled( cc, FALSE );
options->setCheckable( TRUE );
setMenuItemFlags();
menubar->insertSeparator();
QPopupMenu* help = new QPopupMenu( menubar );
menubar->insertItem( "&Help", help );
help->insertItem( "Help!", this, SLOT(giveHelp()), CTRL+Key_H );
connect( options, SIGNAL(activated(int)), this, SLOT(doOption(int)) );
status = new QLabel(this);
status->setFrameStyle( QFrame::WinPanel | QFrame::Sunken );
status->setFixedHeight( fontMetrics().height() + 4 );
setMouseTracking( TRUE );
}
static Image*
_cachedpage(Document *doc, int angle, int page, char *ra)
{
int i;
Cached *c, old;
Image *im, *tmp;
if((page < 0 || page >= doc->npage) && !doc->fwdonly)
return nil;
Again:
for(i=0; i<nelem(cache); i++){
c = &cache[i];
if(c->doc == doc && c->angle == angle && c->page == page){
if(chatty) fprint(2, "cache%s hit %d\n", ra, page);
goto Found;
}
if(c->doc == nil)
break;
}
if(i >= nelem(cache))
i = nelem(cache)-1;
c = &cache[i];
if(c->im)
freeimage(c->im);
c->im = nil;
c->doc = nil;
c->page = -1;
if(chatty) fprint(2, "cache%s load %d\n", ra, page);
im = doc->drawpage(doc, page);
if(im == nil){
if(doc->fwdonly) /* end of file */
wexits(0);
im = questionmark();
if(im == nil){
Flush:
if(i > 0){
cacheflush();
goto Again;
}
fprint(2, "out of memory: %r\n");
wexits("memory");
}
return im;
}
if(im->r.min.x != 0 || im->r.min.y != 0){
/* translate to 0,0 */
tmp = xallocimage(display, Rect(0, 0, Dx(im->r), Dy(im->r)), im->chan, 0, DNofill);
if(tmp == nil){
freeimage(im);
goto Flush;
}
drawop(tmp, tmp->r, im, nil, im->r.min, S);
freeimage(im);
im = tmp;
}
switch(angle){
case 90:
im = rot90(im);
break;
case 180:
rot180(im);
break;
case 270:
im = rot270(im);
break;
}
if(im == nil)
goto Flush;
c->doc = doc;
c->page = page;
c->angle = angle;
c->im = im;
Found:
if(chatty) fprint(2, "cache%s mtf %d @%d:", ra, c->page, i);
old = *c;
memmove(cache+1, cache, (c-cache)*sizeof cache[0]);
cache[0] = old;
if(chatty){
for(i=0; i<nelem(cache); i++)
fprint(2, " %d", cache[i].page);
fprint(2, "\n");
}
if(chatty) fprint(2, "cache%s return %d %p\n", ra, old.page, old.im);
return old.im;
}
/*
In the constructor, we just pass the standard parameters on to
QWidget.
The menu uses a single slot to simplify the process of adding
more items to the options menu.
*/
FLImageViewer::FLImageViewer( QWidget *parent, const char *name, WFlags fl )
: QWidget( parent, name, fl | Qt::WDestructiveClose | Qt::WType_Dialog | Qt::WShowModal | Qt::WStyle_Maximize | Qt::WStyle_SysMenu ),
conversion_flags( PreferDither ),
helpmsg( 0 ) {
pickx = -1;
picky = -1;
clickx = -1;
clicky = -1;
alloc_context = 0;
menubar = new QMenuBar( this );
menubar->setSeparator( QMenuBar::InWindowsStyle );
QStrList fmt = QImage::outputFormats();
saveimage = new QPopupMenu( menubar );
savepixmap = new QPopupMenu( menubar );
for ( const char* f = fmt.first(); f; f = fmt.next() ) {
saveimage->insertItem( f );
savepixmap->insertItem( f );
}
connect( saveimage, SIGNAL( activated( int ) ), this, SLOT( saveImage( int ) ) );
connect( savepixmap, SIGNAL( activated( int ) ), this, SLOT( savePixmap( int ) ) );
file = new QPopupMenu( menubar );
menubar->insertItem( tr( "&Archivo" ), file );
//file->insertItem( "&New window", this, SLOT(newWindow()), CTRL+Key_N );
file->insertItem( tr( "&Abrir..." ), this, SLOT( openFile() ), CTRL + Key_O );
si = file->insertItem( tr( "Guardar imagen" ), saveimage );
sp = file->insertItem( tr( "Guardar pixmap" ), savepixmap );
//file->insertSeparator();
//file->insertItem( "E&xit", qApp, SLOT(quit()), CTRL+Key_Q );
edit = new QPopupMenu( menubar );
menubar->insertItem( tr( "&Edición" ), edit );
edit->insertItem( tr( "&Copiar" ), this, SLOT( copy() ), CTRL + Key_C );
edit->insertItem( tr( "&Pegar" ), this, SLOT( paste() ), CTRL + Key_V );
edit->insertSeparator();
edit->insertItem( tr( "Volteo &Horizontal" ), this, SLOT( hFlip() ), ALT + Key_H );
edit->insertItem( tr( "Volteo &Vertical" ), this, SLOT( vFlip() ), ALT + Key_V );
edit->insertItem( tr( "&Rotar 180" ), this, SLOT( rot180() ), ALT + Key_R );
edit->insertSeparator();
//edit->insertItem("&Text...", this, SLOT(editText()));
//edit->insertSeparator();
t1 = edit->insertItem( tr( "Convertir a &1 bit" ), this, SLOT( to1Bit() ) );
t8 = edit->insertItem( tr( "Convertir a &8 bit" ), this, SLOT( to8Bit() ) );
t32 = edit->insertItem( tr( "Convertir a &32 bit" ), this, SLOT( to32Bit() ) );
options = new QPopupMenu( menubar );
menubar->insertItem( tr( "&Opciones" ), options );
ac = options->insertItem( "AutoColor" );
co = options->insertItem( "ColorOnly" );
mo = options->insertItem( "MonoOnly" );
options->insertSeparator();
fd = options->insertItem( "DiffuseDither" );
bd = options->insertItem( "OrderedDither" );
td = options->insertItem( "ThresholdDither" );
options->insertSeparator();
ta = options->insertItem( "ThresholdAlphaDither" );
ba = options->insertItem( "OrderedAlphaDither" );
fa = options->insertItem( "DiffuseAlphaDither" );
options->insertSeparator();
ad = options->insertItem( "PreferDither" );
dd = options->insertItem( "AvoidDither" );
options->insertSeparator();
ss = options->insertItem( tr( "Escalado suavizado" ) );
cc = options->insertItem( tr( "Usar contexto de color" ) );
if ( QApplication::colorSpec() == QApplication::ManyColor )
options->setItemEnabled( cc, FALSE );
options->setCheckable( TRUE );
setMenuItemFlags();
//menubar->insertSeparator();
//QPopupMenu* help = new QPopupMenu( menubar );
//menubar->insertItem( "&Help", help );
//help->insertItem( "Help!", this, SLOT(giveHelp()), CTRL+Key_H );
connect( options, SIGNAL( activated( int ) ), this, SLOT( doOption( int ) ) );
status = new QLabel( this );
status->setFrameStyle( QFrame::WinPanel | QFrame::Sunken );
status->setFixedHeight( fontMetrics().height() + 4 );
setMouseTracking( TRUE );
}