Added header to the file storing the title decode confidence.

Author: klanderfri

ReadMagicCard/CardReader.cpp

@@ -13,6 +13,9 @@
 using namespace cv;
 using namespace std;
 
+bool CardReader::m_hasWrittenConfidenceFileHeader = false;
+mutex CardReader::m_fileHeaderLock;
+
 CardReader::CardReader(wstring imageFileName, SystemMethods* systemMethods, bool doDebugging)
 	: BasicReaderData(imageFileName, Mat(), systemMethods, doDebugging)
 {
@@ -207,9 +210,21 @@ void CardReader::storeConfidence(int numberOfTries, wstring ocrResult, int ocrCo
 
 		wstring textfileName = L"TitleDecodeConfidence.txt";
 		wstring subfolderName = L"Image Data";
+
+		//Make sure the header can't be written by two different threads.
+		m_fileHeaderLock.lock();
+		bool writeHeader = !m_hasWrittenConfidenceFileHeader;
+		m_hasWrittenConfidenceFileHeader = true;
+		m_fileHeaderLock.unlock();
+
+		if (writeHeader) {
+
+			wstring rowToAdd = L"Number of tries\tImage file name\tOCR result\tOCR confidence";
+			FileHandling::AddRowToFile(systemMethods, rowToAdd, textfileName, subfolderName);
+		}
+
 		wstring numberOfTriesStr = systemMethods->ToWString(to_string(numberOfTries));
 		wstring confidenceStr = systemMethods->ToWString(to_string(ocrConfidence));
-
 		wstring rowToAdd = numberOfTriesStr + L"\t" + imageFileName + L"\t" + ocrResult + L"\t" + confidenceStr;
 		FileHandling::AddRowToFile(systemMethods, rowToAdd, textfileName, subfolderName);
 	}

ReadMagicCard/CardReader.h

@@ -2,6 +2,7 @@
 #include "BasicReaderData.h"
 #include "CardTitleType.h"
 #include "OcrDecodeResult.h"
+#include <mutex>
 //Class for reading a card.
 class CardReader :
 	BasicReaderData
@@ -44,4 +45,8 @@ class CardReader :
 	bool m_success = false;
 	//Tells how confident Tesseract was of decoding the title.
 	int m_confidence = 0;
+	//Lock preventing multiple threads from writing the header in the file storing the title decode confidence.
+	static std::mutex m_fileHeaderLock;
+	//Tells if the header in the file storing the title decode confidence has been written.
+	static bool m_hasWrittenConfidenceFileHeader;
 };