//called once for single image processing
bool
Decoder::processTag()
{
if(!config->ARGS_OK ) return false;
if(tagimage == NULL) tagimage = new Tagimage(config);
if(!tagimage->isValid()) {
delete tagimage; tagimage = NULL;
return false;
}
if(config->VISUAL_DEBUG) config->setDebugPixmap(new Pixmap(config->TAG_IMAGE_FILE));
Threshold* threshold = new Threshold(config, tagimage);
threshold->computeEdgemap();
delete tagimage; tagimage = NULL;
delete threshold;
Shape *shapes = new Shape[config->MAX_SHAPES];
Shape *anchor = new Shape(config);
Border* border = new Border(config, shapes, anchor);
int nshapes = border->findShapes();
delete border;
if( nshapes >= 12 ){
Pattern* pattern = new Pattern(config, shapes, nshapes, anchor);
pattern->findCodeInternal(tag);
delete pattern;
}
delete anchor;
delete [] shapes;
return true;
}
//called more than once in video frame processing
bool
Decoder::processFrame(unsigned char *data, int width, int height)
{
assert(data != NULL) ;
assert( (data+(width*height)) != NULL) ;
//1. Skip frame
if(fuzzy->selectFrame(config->V_SKIP_FRAMES) == false) {
if(fuzzy->tagIsActive()) markCode(data, width, height, 0);
return false;
}
//2.Check Motion
if(fuzzy->motionDetect(data, width, height) == false) {
if(fuzzy->tagIsActive()) markCode(data, width, height, 0);
return false;
}
//3. Process Tag
config->V_GRID_WIDTH = width;
config->V_GRID_HEIGHT = height;
//config->setDebugPixmap(new Pixmap("debug.jpg"));
for(int i=0; i<12; i++) tag[i] = -1;
Threshold* threshold = new Threshold(config, data, width, height);
threshold->computeEdgemap();
delete threshold;
resetVMap(width*height);
Shape *shapes = new Shape[config->MAX_SHAPES];
Shape *anchor = new Shape(config);
Border* border = new Border(config, shapes, anchor);
int nshapes = border->findShapes();
delete border;
if( nshapes >= 12 ){
Pattern* pattern = new Pattern(config, shapes, nshapes, anchor);
pattern->findCodeExternal(tag);
delete pattern;
}
delete anchor;
delete [] shapes;
bool tagvalidity = fuzzy->validateTag(tag);
if(tagvalidity) markCode(data, width, height, 1);
return tagvalidity;
}