From 004f7a5bd897fc13c5d84020040d50961896e456 Mon Sep 17 00:00:00 2001
From: Matt Hill <matthill@gmail.com>
Date: Tue, 8 Apr 2014 13:21:15 -0500
Subject: [PATCH] Skipping OCR processing when num of possible characters is
 too small

---
 src/openalpr/ocr.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/openalpr/ocr.cpp b/src/openalpr/ocr.cpp
index e665f96..dde363b 100644
--- a/src/openalpr/ocr.cpp
+++ b/src/openalpr/ocr.cpp
@@ -52,6 +52,10 @@ void OCR::performOCR(vector<Mat> thresholds, vector<Rect> charRegions)
   getTime(&startTime);
 
   postProcessor->clear();
+  
+  // Don't waste time on OCR processing if it is impossible to get sufficient characters
+  if (charRegions.size() < config->postProcessMinCharacters)
+    return;
 
   for (int i = 0; i < thresholds.size(); i++)
   {