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Make baseline be exactly _below_ the letter.

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The letter now "sits" on the baseline. This is to make indexing more convenient.
This commit is contained in:
Andrey Golovizin 2014-08-13 19:53:29 +02:00
parent 3d2b2ba30a
commit e3217d28b8
2 changed files with 2 additions and 2 deletions
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2
pixelocr/gui/pageview.py
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@ -68,7 +68,7 @@ class PageScene(QGraphicsScene):
for letter in word: for letter in word:
if not letter.image.isspace: if not letter.image.isspace:
self.addRect(letter.x1, letter.y1, letter.width - 1, letter.height - 1, letterPen, letterBrush) self.addRect(letter.x1, letter.y1, letter.width - 1, letter.height - 1, letterPen, letterBrush)
self.addLine(line.x1, line.y1 + line.baseline, line.x2, line.y1 + line.baseline, linePen) self.addLine(line.x1, line.y1 + line.baseline, line.x2, line.y1 + line.baseline - 1, linePen)
# self.addRect(line.x1, line.y1, line.width, line.height, Qt.red) # self.addRect(line.x1, line.y1, line.width, line.height, Qt.red)
def addPage(self, page): def addPage(self, page):

2
pixelocr/page.py
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@ -92,7 +92,7 @@ class Line(PageObject):
"""Detect baseline height, relative to the top.""" """Detect baseline height, relative to the top."""
bitmap = self.image.bitmap.astype(np.float) bitmap = self.image.bitmap.astype(np.float)
histogram = bitmap.sum(axis=1) histogram = bitmap.sum(axis=1)
gradient = filters.convolve1d(histogram, [1, -1], axis=0) gradient = filters.correlate1d(histogram, [-1, 1], axis=0)
# top = gradient.argmax() # top = gradient.argmax()
bottom = gradient.argmin() bottom = gradient.argmin()
return bottom return bottom