float filter_noise_blobs( //separate noise
BLOBNBOX_LIST *src_list, //origonal list
BLOBNBOX_LIST *noise_list, //noise list
BLOBNBOX_LIST *small_list, //small blobs
BLOBNBOX_LIST *large_list //large blobs
) {
INT16 height; //height of blob
INT16 width; //of blob
BLOBNBOX_IT src_it = src_list; //iterators
BLOBNBOX_IT noise_it = noise_list;
BLOBNBOX_IT small_it = small_list;
BLOBNBOX_IT large_it = large_list;
STATS size_stats (0, MAX_NEAREST_DIST);
//blob heights
if (textord_new_initial_xheight)
return filter_noise_blobs2 (src_list, noise_list, small_list, large_list);
float min_y; //size limits
float max_y;
float max_x;
for (src_it.mark_cycle_pt (); !src_it.cycled_list (); src_it.forward ()) {
if (src_it.data ()->bounding_box ().height () < textord_max_noise_size)
noise_it.add_after_then_move (src_it.extract ());
}
for (src_it.mark_cycle_pt (); !src_it.cycled_list (); src_it.forward ()) {
size_stats.add (src_it.data ()->bounding_box ().height (), 1);
}
min_y = floor (size_stats.ile (textord_blob_size_smallile / 100.0));
max_y = ceil (size_stats.ile (textord_blob_size_bigile / 100.0));
max_x = ceil (size_stats.ile (0.5) * textord_width_limit);
for (src_it.mark_cycle_pt (); !src_it.cycled_list (); src_it.forward ()) {
height = src_it.data ()->bounding_box ().height ();
width = src_it.data ()->bounding_box ().width ();
if (height < min_y)
small_it.add_after_then_move (src_it.extract ());
else if (height > max_y || width > max_x)
large_it.add_after_then_move (src_it.extract ());
}
return size_stats.ile (textord_initialx_ile);
}
std::string cache_manager::stat_json() const {
rapidjson::Document doc;
doc.SetObject();
auto &allocator = doc.GetAllocator();
rapidjson::Value total_cache(rapidjson::kObjectType);
rapidjson::Value size_stats(rapidjson::kObjectType);
get_total_caches_size_stats_json(size_stats, allocator);
total_cache.AddMember("size_stats", size_stats, allocator);
doc.AddMember("total_cache", total_cache, allocator);
rapidjson::Value caches(rapidjson::kObjectType);
get_caches_size_stats_json(caches, allocator);
doc.AddMember("caches", caches, allocator);
rapidjson::StringBuffer buffer;
rapidjson::Writer<rapidjson::StringBuffer> writer(buffer);
doc.Accept(writer);
return buffer.GetString();
}
float Textord::filter_noise_blobs(
BLOBNBOX_LIST *src_list, // original list
BLOBNBOX_LIST *noise_list, // noise list
BLOBNBOX_LIST *small_list, // small blobs
BLOBNBOX_LIST *large_list) { // large blobs
int16_t height; //height of blob
int16_t width; //of blob
BLOBNBOX *blob; //current blob
float initial_x; //first guess
BLOBNBOX_IT src_it = src_list; //iterators
BLOBNBOX_IT noise_it = noise_list;
BLOBNBOX_IT small_it = small_list;
BLOBNBOX_IT large_it = large_list;
STATS size_stats (0, MAX_NEAREST_DIST);
//blob heights
float min_y; //size limits
float max_y;
float max_x;
float max_height; //of good blobs
for (src_it.mark_cycle_pt(); !src_it.cycled_list(); src_it.forward()) {
blob = src_it.data();
if (blob->bounding_box().height() < textord_max_noise_size)
noise_it.add_after_then_move(src_it.extract());
else if (blob->enclosed_area() >= blob->bounding_box().height()
* blob->bounding_box().width() * textord_noise_area_ratio)
small_it.add_after_then_move(src_it.extract());
}
for (src_it.mark_cycle_pt(); !src_it.cycled_list(); src_it.forward()) {
size_stats.add(src_it.data()->bounding_box().height(), 1);
}
initial_x = size_stats.ile(textord_initialx_ile);
max_y = ceil(initial_x *
(tesseract::CCStruct::kDescenderFraction +
tesseract::CCStruct::kXHeightFraction +
2 * tesseract::CCStruct::kAscenderFraction) /
tesseract::CCStruct::kXHeightFraction);
min_y = floor (initial_x / 2);
max_x = ceil (initial_x * textord_width_limit);
small_it.move_to_first ();
for (small_it.mark_cycle_pt (); !small_it.cycled_list ();
small_it.forward ()) {
height = small_it.data()->bounding_box().height();
if (height > max_y)
large_it.add_after_then_move(small_it.extract ());
else if (height >= min_y)
src_it.add_after_then_move(small_it.extract ());
}
size_stats.clear ();
for (src_it.mark_cycle_pt (); !src_it.cycled_list (); src_it.forward ()) {
height = src_it.data ()->bounding_box ().height ();
width = src_it.data ()->bounding_box ().width ();
if (height < min_y)
small_it.add_after_then_move (src_it.extract ());
else if (height > max_y || width > max_x)
large_it.add_after_then_move (src_it.extract ());
else
size_stats.add (height, 1);
}
max_height = size_stats.ile (textord_initialasc_ile);
// tprintf("max_y=%g, min_y=%g, initial_x=%g, max_height=%g,",
// max_y,min_y,initial_x,max_height);
max_height *= tesseract::CCStruct::kXHeightCapRatio;
if (max_height > initial_x)
initial_x = max_height;
// tprintf(" ret=%g\n",initial_x);
return initial_x;
}
