public boolean check(Glyph glyph) {
Shape shape = glyph.getShape();
boolean res =
glyph.isWellKnown()
&& ShapeRange.StemSymbols.contains(shape)
&& (shape != Shape.BEAM_HOOK);
return res;
}
/**
* In a specified system, look for all stems that should not be kept, rebuild surrounding glyphs
* and try to recognize them. If this action does not lead to some recognized symbol, then we
* restore the stems.
*
* @return the number of symbols recognized
*/
public int runStemPattern() {
int nb = 0;
// Collect all undue stems
List<Glyph> SuspectedStems = new ArrayList<Glyph>();
for (Glyph glyph : system.getGlyphs()) {
if (glyph.isStem() && glyph.isActive()) {
Set<Glyph> goods = new HashSet<Glyph>();
Set<Glyph> bads = new HashSet<Glyph>();
glyph.getSymbolsBefore(reliableStemSymbols, goods, bads);
glyph.getSymbolsAfter(reliableStemSymbols, goods, bads);
if (goods.isEmpty()) {
if (logger.isFineEnabled()) {
logger.finest("Suspected Stem " + glyph);
}
SuspectedStems.add(glyph);
// Discard "bad" ones
for (Glyph g : bads) {
if (logger.isFineEnabled()) {
logger.finest("Deassigning bad glyph " + g);
}
g.setShape((Shape) null);
}
}
}
}
// Remove these stem glyphs since nearby stems are used for recognition
for (Glyph glyph : SuspectedStems) {
system.removeGlyph(glyph);
}
// Extract brand new glyphs (removeInactiveGlyphs + retrieveGlyphs)
system.extractNewGlyphs();
// Try to recognize each glyph in turn
List<Glyph> symbols = new ArrayList<Glyph>();
final GlyphEvaluator evaluator = GlyphNetwork.getInstance();
final double maxDoubt = GlyphInspector.getPatternsMaxDoubt();
for (Glyph glyph : system.getGlyphs()) {
if (glyph.getShape() == null) {
Evaluation vote = evaluator.vote(glyph, maxDoubt);
if (vote != null) {
glyph.setShape(vote.shape, vote.doubt);
if (glyph.isWellKnown()) {
if (logger.isFineEnabled()) {
logger.finest("New symbol " + glyph);
}
symbols.add(glyph);
nb++;
}
}
}
}
// Keep stems that have not been replaced by symbols, definitively
// remove the others
for (Glyph stem : SuspectedStems) {
// Check if one of its section is now part of a symbol
boolean known = false;
Glyph glyph = null;
for (GlyphSection section : stem.getMembers()) {
glyph = section.getGlyph();
if ((glyph != null) && glyph.isWellKnown()) {
known = true;
break;
}
}
if (!known) {
// Remove the newly created glyph
if (glyph != null) {
system.removeGlyph(glyph);
}
// Restore the stem
system.addGlyph(stem);
}
}
return nb;
}