/// Return a TBLOB * from the whole page_image.
/// To be freed later with free_blob().
TBLOB *make_tesseract_blob(float baseline, float xheight, float descender, float ascender) {
BLOCK *block = new BLOCK ("a character",
TRUE,
0, 0,
0, 0,
page_image.get_xsize(),
page_image.get_ysize());
// Create C_BLOBs from the page
extract_edges(
#ifndef GRAPHICS_DISABLED
NULL,
#endif
&page_image, &page_image,
ICOORD(page_image.get_xsize(), page_image.get_ysize()),
block);
// Create one PBLOB from all C_BLOBs
C_BLOB_LIST *list = block->blob_list();
C_BLOB_IT c_blob_it(list);
PBLOB *pblob = new PBLOB; // will be (hopefully) deleted by the pblob_list
for (c_blob_it.mark_cycle_pt();
!c_blob_it.cycled_list();
c_blob_it.forward()) {
C_BLOB *c_blob = c_blob_it.data();
PBLOB c_as_p(c_blob, baseline + xheight);
merge_blobs(pblob, &c_as_p);
}
PBLOB_LIST *pblob_list = new PBLOB_LIST; // will be deleted by the word
PBLOB_IT pblob_it(pblob_list);
pblob_it.add_after_then_move(pblob);
// Normalize PBLOB
WERD word(pblob_list, 0, " ");
ROW *row = make_tess_ocrrow(baseline, xheight, descender, ascender);
word.baseline_normalise(row);
delete row;
// Create a TBLOB from PBLOB
return make_tess_blob(pblob, /* flatten: */ TRUE);
}
static void *result(struct merge_list *entry, unsigned long *size)
{
enum object_type type;
struct blob *base, *our, *their;
const char *path = entry->path;
if (!entry->stage)
return read_object_file(&entry->blob->object.oid, &type, size);
base = NULL;
if (entry->stage == 1) {
base = entry->blob;
entry = entry->link;
}
our = NULL;
if (entry && entry->stage == 2) {
our = entry->blob;
entry = entry->link;
}
their = NULL;
if (entry)
their = entry->blob;
return merge_blobs(&the_index, path, base, our, their, size);
}
