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Added mutex around OCR. Tesseract does not appear to be threadsafe

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This commit is contained in:
Matt Hill
2014-05-04 15:18:17 -05:00
parent d6c79299fb
commit 7e2646aab0
2 changed files with 8 additions and 5 deletions
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9
src/openalpr/alpr_impl.cpp
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@@ -153,6 +153,7 @@ std::vector<AlprResult> AlprImpl::recognize(cv::Mat img)
void plateAnalysisThread(void* arg)
{
PlateDispatcher* dispatcher = (PlateDispatcher*) arg;
if (dispatcher->config->debugGeneral)
cout << "Thread: " << tthread::this_thread::get_id() << " Initialized" << endl;
@@ -207,13 +208,13 @@ void plateAnalysisThread(void* arg)
}
}
dispatcher->ocr->performOCR(lp.charSegmenter->getThresholds(), lp.charSegmenter->characters);
// Tesseract OCR does not appear to be threadsafe
dispatcher->ocrMutex.lock();
dispatcher->ocr->performOCR(lp.charSegmenter->getThresholds(), lp.charSegmenter->characters);
dispatcher->ocr->postProcessor->analyze(plateResult.region, dispatcher->topN);
//plateResult.characters = ocr->postProcessor->bestChars;
const vector<PPResult> ppResults = dispatcher->ocr->postProcessor->getResults();
dispatcher->ocrMutex.unlock();
int bestPlateIndex = 0;