private String recognizeFileAsync(IXConnection conn, String fileName, int timeoutSeconds)
{
// Open an event bus private to the session ticket and add a listener.
// OCR results are send over this bus.
EventBusApi.Bus eventBus = conn.EventBusApi.OpenEventBusChannel(conn.LoginResult.clientInfo.ticket);
eventBus.AddListener(EventBusC.EVENT_OCR_RESULT);
// Add a handler function for events.
conn.EventBusApi.EventBusHandler += new EventBusApi.ProcessEventBusEvents(EventBusApi_EventBusHandler);
OcrInfo ocrInfo = new OcrInfo();
ocrInfo.recognizeFile = new OcrInfoRecognizeFile();
ocrInfo.recognizeFile.imageData = new FileData();
ocrInfo.recognizeFile.imageData.data = File.ReadAllBytes(fileName);
ocrInfo.recognizeFile.imageData.contentType = ".TIF";
ocrInfo.recognizeFile.recognizeLangs = new String[] { "English" };
ocrInfo.recognizeFile.timeoutSeconds = timeoutSeconds;
ocrInfo.recognizeFile.outputFormat = OcrInfoC.TEXT;
ocrInfo.recognizeFile.pageNo = -1; // All pages
// Set this properties for asynchronous processing:
// Event bus that receives the result
ocrInfo.busId = eventBus.Id;
// ID for the request, unique for all open OCR requests on ocrInfo.busId
ocrInfo.eventId = 123;
// Process OCR
conn.Ix.processOcr(ocrInfo);
// Wait for result
lock (syncObject)
{
long t1 = DateTime.Now.Ticks / 10000;
int dt = timeoutSeconds * 1000;
while (result == null)
{
Monitor.Wait(syncObject, dt);
long t2 = DateTime.Now.Ticks / 10000;
dt -= (int)(t2 - t1);
if (dt <= 0)
{
throw new Exception("Timeout");
}
t1 = t2;
}
}
String text = result.recognizeFile.text;
return(text);
}
public void run()
{
IXConnFactory connFact = null;
IXConnection conn = null;
try
{
IXProperties connProps = IXConnFactory.CreateConnProperties(url);
IXProperties sessOpts = IXConnFactory.CreateSessionOptions("IX-Examples", "1.0");
connFact = new IXConnFactory(connProps, sessOpts);
conn = connFact.Create(userName, userPwd, "myComputer", null);
Logger.instance().log("login OK");
Logger.instance().log("Check whether OCR is available...");
bool avail = checkOcrAvail(conn);
Logger.instance().log("OCR is available=" + avail);
if (avail)
{
Logger.instance().log("Query languages:");
OcrInfo ocrInfo = new OcrInfo();
ocrInfo.queryLanguages = new OcrInfoQueryLanguages();
// Extenal language names should be returned in this language
ocrInfo.messagesLanguage = OcrInfoC.MESSAGES_LANGUAGE_GERMAN;
OcrResult ocrResult = conn.Ix.processOcr(ocrInfo);
for (int i = 0; i < ocrResult.queryLanguages.externalLangs.Length; i++)
{
Logger.instance().log("external=" + ocrResult.queryLanguages.externalLangs[i]);
Logger.instance().log("internal=" + ocrResult.queryLanguages.internalLangs[i]);
}
}
}
catch (Exception e)
{
throw e;
}
finally
{
// Logout
if (conn != null)
{
Logger.instance().log("IX logout...");
conn.Logout();
Logger.instance().log("IX logout OK");
}
}
}
private String recognizeFileSync(IXConnection conn, String fileName)
{
OcrInfo ocrInfo = new OcrInfo();
ocrInfo.recognizeFile = new OcrInfoRecognizeFile();
ocrInfo.recognizeFile.imageData = new FileData();
ocrInfo.recognizeFile.imageData.data = File.ReadAllBytes(fileName);
ocrInfo.recognizeFile.imageData.contentType = ".TIF";
ocrInfo.recognizeFile.recognizeLangs = new String[] { "English" };
ocrInfo.recognizeFile.timeoutSeconds = 30;
ocrInfo.recognizeFile.outputFormat = OcrInfoC.TEXT;
ocrInfo.recognizeFile.pageNo = -1; // All pages
OcrResult ocrResult = conn.Ix.processOcr(ocrInfo);
String text = ocrResult.recognizeFile.text;
return(text);
}
private String recognizeRect(IXConnection conn, String fileName, int pmLeft, int pmTop, int pmRight, int pmBottom)
{
OcrInfo ocrInfo = new OcrInfo();
ocrInfo.recognizeFile = new OcrInfoRecognizeFile();
ocrInfo.recognizeFile.imageData = new FileData();
ocrInfo.recognizeFile.imageData.data = File.ReadAllBytes(fileName);
ocrInfo.recognizeFile.imageData.contentType = ".TIF";
ocrInfo.recognizeFile.recognizeLangs = new String[] { "English" };
ocrInfo.recognizeFile.timeoutSeconds = 30;
ocrInfo.recognizeFile.outputFormat = OcrInfoC.TEXT;
ocrInfo.recognizeFile.pageNo = 0;
ocrInfo.recognizeFile.recognizeRects = new OcrRect[] { new OcrRect(pmLeft, pmTop, pmRight, pmBottom) };
ocrInfo.recognizeFile.rectUnit = OcrInfoC.UNIT_PER_THOUSAND;
OcrResult ocrResult = conn.Ix.processOcr(ocrInfo);
String text = ocrResult.recognizeFile.text;
return(text);
}
private void recognizeFileCharPos(IXConnection conn, string fileName)
{
OcrInfo ocrInfo = new OcrInfo();
ocrInfo.recognizeFile = new OcrInfoRecognizeFile();
ocrInfo.recognizeFile.imageData = new FileData();
ocrInfo.recognizeFile.imageData.data = File.ReadAllBytes(fileName);
ocrInfo.recognizeFile.imageData.contentType = ".TIF";
ocrInfo.recognizeFile.recognizeLangs = new String[] { "English" };
ocrInfo.recognizeFile.timeoutSeconds = 30;
ocrInfo.recognizeFile.outputFormat = OcrInfoC.CHAR_AND_RECT_EX;
ocrInfo.recognizeFile.pageNo = 0; // First pages
// Recognize document
OcrResult ocrResult = conn.Ix.processOcr(ocrInfo);
// Put result bytes into BinaryReader
byte[] data = ocrResult.recognizeFile.textData.data;
BinaryReader rd = new BinaryReader(new MemoryStream(data));
// Read header
int magic = rd.ReadInt32();
if (magic != 0x52434F45)
{
throw new Exception("Unrecognized format");
}
int version = rd.ReadInt32();
if (version > 3)
{
throw new Exception("Unsupported version");
}
double skew = rd.ReadDouble();
int width = rd.ReadInt32();
int height = rd.ReadInt32();
Logger.instance().log("magic=0x" + Convert.ToString(magic, 16));
Logger.instance().log("version=" + version);
Logger.instance().log("skew=" + skew);
Logger.instance().log("width=" + width);
Logger.instance().log("height=" + height);
// Read characters
int headerSize = 4 + 4 + 8 + 4 + 4;
int charSize = 2 + 4 + 4 + 4 + 4 + 4 + 2;
int nbOfChars = (data.Length - headerSize) / charSize;
for (int i = 0; i < Math.Min(100, nbOfChars); i++)
{
char ch = (char)rd.ReadInt16();
int left = rd.ReadInt32();
int top = rd.ReadInt32();
int right = rd.ReadInt32();
int bottom = rd.ReadInt32();
int percent = rd.ReadInt32();
char chOrig = (char)rd.ReadInt16();
Logger.instance().log("char " + i + ": '" + ch + "'");
Logger.instance().log(" rect=(" + left + "," + top + "," + right + "," + bottom + ")");
Logger.instance().log(" confidence=" + percent + ", orig='" + chOrig + "'");
}
}
