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Code Issues Releases Wiki Activity

Increase cache size for bad OCR results.

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This commit is contained in:
Benjamin Rosemann 2020-11-24 17:10:59 +01:00
parent 84d34f5b26
commit c4f75d5264
1 changed files with 8 additions and 8 deletions
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16
qurator/dinglehopper/flexible_character_accuracy.py
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@ -64,7 +64,7 @@ def flexible_character_accuracy(gt: str, ocr: str) -> Tuple[float, List[Match]]:
:return: Score between 0 and 1 and match objects.
"""
best_score = -float("inf")
best_score = -sys.maxsize
best_matches = []
# TODO: should this be configurable?
combinations = product(
@ -135,7 +135,7 @@ def match_longest_gt_lines(
:return: Possible match object.
"""
best_score, best_match, best_gt, best_ocr = -float("inf"), None, None, None
best_score, best_match, best_gt, best_ocr = -sys.maxsize, None, None, None
if not ocr_lines:
return best_match
@ -145,7 +145,7 @@ def match_longest_gt_lines(
length_threshold = min(gt_lines[0].length, ocr_lines[0].length) - 1
for gt_line in takewhile(lambda line: line.length > length_threshold, gt_lines):
match, ocr_line = match_gt_line(gt_line, ocr_lines, coef)
score = -float("inf") if not match else character_accuracy(match.dist)
score = -sys.maxsize if not match else character_accuracy(match.dist)
if score > best_score:
best_score, best_match, best_gt, best_ocr = score, match, gt_line, ocr_line
# early breaking: we only need one perfect fit
@ -171,7 +171,7 @@ def match_gt_line(
:return: Match object and the matched ocr line.
"""
min_penalty = float("inf")
min_penalty = sys.maxsize
best_match, best_ocr = None, None
gt_line_length = gt_line.length
gt_line_start = gt_line.start
@ -193,7 +193,7 @@ def match_gt_line(
return best_match, best_ocr
@lru_cache(maxsize=10000)
@lru_cache(maxsize=100000)
def match_lines(gt_line: "Part", ocr_line: "Part") -> Optional[Match]:
"""Matches two lines searching for a naive local alignment.
@ -213,7 +213,7 @@ def match_lines(gt_line: "Part", ocr_line: "Part") -> Optional[Match]:
if min_length == 0:
return best_match
length_diff = gt_line.length - ocr_line.length
min_edit_dist = float("inf")
min_edit_dist = sys.maxsize
gt_parts = [
(i, gt_line.substring(rel_start=i, rel_end=i + min_length))
@ -258,7 +258,7 @@ def match_lines(gt_line: "Part", ocr_line: "Part") -> Optional[Match]:
return best_match
@lru_cache(maxsize=10000)
@lru_cache(maxsize=100000)
def distance(gt: "Part", ocr: "Part") -> Match:
"""Calculate the editing distance between the two lines.
@ -285,7 +285,7 @@ def score_edit_distance(dist: Distance) -> int:
return dist.delete + dist.insert + 2 * dist.replace
@lru_cache(10000)
@lru_cache(100000)
def calculate_penalty(
gt_length: int,
ocr_length: int,