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cnn-rnn-ocr: batch flipped line candidates together with rest

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This commit is contained in:
Robert Sachunsky 2026-07-18 00:37:19 +02:00
parent 7e776612a4
commit be8b161607
1 changed files with 5 additions and 3 deletions
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8
src/eynollah/eynollah_ocr.py
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@ -299,8 +299,9 @@ class Eynollah_ocr(Eynollah):
ver_index = np.array(ver_index)
imgs_rgb = np.stack(imgs_rgb)
imgs_bin = np.stack(imgs_bin)
imgs_rgb_ver = imgs_rgb[ver_index > 0, ::-1, ::-1]
imgs_bin_ver = imgs_bin[ver_index > 0, ::-1, ::-1]
if ver_index.any():
imgs_rgb = np.append(imgs_rgb, imgs_rgb[ver_index > 0, ::-1, ::-1], axis=0)
imgs_bin = np.append(imgs_bin, imgs_bin[ver_index > 0, ::-1, ::-1], axis=0)
# inference model now yields (char-bytes, line-prob) instead of vocidx-softmax
# (so ctc_decode and inverse StringLookup are included)
@ -308,7 +309,8 @@ class Eynollah_ocr(Eynollah):
preds, probs = self.model_zoo.get('ocr').predict((imgs_rgb, imgs_bin), verbose=0)
if ver_index.any():
preds_ver, probs_ver = self.model_zoo.get('ocr').predict((imgs_rgb_ver, imgs_bin_ver), verbose=0)
preds, preds_ver = np.split(preds, [-np.count_nonzero(ver_index)], axis=0)
probs, probs_ver = np.split(probs, [-np.count_nonzero(ver_index)], axis=0)
flipped_ver_is_better = np.flatnonzero(probs_ver > probs[ver_index > 0])
if len(flipped_ver_is_better):
self.logger.info("%d skewed lines perform better when flipped", len(flipped_ver_is_better))