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Bypass Leptonica error message with pixGenHalftoneMask()

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Fixes #292
This commit is contained in:
scottb89 2016-06-05 17:38:43 +03:00 committed by amitdo
parent 1958b3bfc3
commit 3dcb5c2488
1 changed files with 10 additions and 0 deletions
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10
textord/imagefind.cpp
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@ -67,11 +67,21 @@ Pix* ImageFind::FindImages(Pix* pix) {
if (pixGetWidth(pix) < kMinImageFindSize ||
pixGetHeight(pix) < kMinImageFindSize)
return pixCreate(pixGetWidth(pix), pixGetHeight(pix), 1);
// Reduce by factor 2.
Pix *pixr = pixReduceRankBinaryCascade(pix, 1, 0, 0, 0);
pixDisplayWrite(pixr, textord_tabfind_show_images);
// Get the halftone mask directly from Leptonica.
//
// Leptonica will print an error message and return NULL if we call
// pixGenHalftoneMask(pixr, NULL, ...) with too small image, so we
// want to bypass that.
if (pixGetWidth(pixr) < kMinImageFindSize ||
pixGetHeight(pixr) < kMinImageFindSize) {
pixDestroy(&pixr);
return pixCreate(pixGetWidth(pix), pixGetHeight(pix), 1);
}
l_int32 ht_found = 0;
Pix *pixht2 = pixGenHalftoneMask(pixr, NULL, &ht_found,
textord_tabfind_show_images);