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Fixed issue 249

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git-svn-id: https://tesseract-ocr.googlecode.com/svn/trunk@342 d0cd1f9f-072b-0410-8dd7-cf729c803f20
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theraysmith 2010-05-20 00:49:41 +00:00
parent ce5de3094f
commit 97cefb1c12
1 changed files with 5 additions and 0 deletions
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textord/imagefind.cpp
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@ -42,6 +42,8 @@ const double kMaxRectangularFraction = 0.75;
// Fraction of width or height to allow transition from kMinRectangularFraction
// to kMaxRectangularFraction, equivalent to a dy/dx skew.
const double kMaxRectangularGradient = 0.1; // About 6 degrees.
// Minimum image size to be worth looking for images on.
const int kMinImageFindSize = 100;
// Finds image regions within the source pix (page image) and returns
// the image regions as a Boxa, Pixa pair, analgous to pixConnComp.
@ -52,6 +54,9 @@ void ImageFinder::FindImages(Pix* pix, Boxa** boxa, Pixa** pixa) {
*pixa = NULL;
#ifdef HAVE_LIBLEPT
if (pixGetWidth(pix) < kMinImageFindSize ||
pixGetHeight(pix) < kMinImageFindSize)
return; // Not worth looking at small images.
// Reduce by factor 2.
Pix *pixr = pixReduceRankBinaryCascade(pix, 1, 0, 0, 0);
pixDisplayWrite(pixr, textord_tabfind_show_images);