static void __executeBackground(byte[] buf)
{
oTesseractRequest r = null;
string guid = Encoding.ASCII.GetString(buf);
var redis = new RedisBase(new RedisSetting(REDIS_TYPE.ONLY_READ, 1000));
try
{
string json = redis.HGET("_OCR_REQUEST", guid);
r = JsonConvert.DeserializeObject <oTesseractRequest>(json);
Bitmap bitmap = redis.HGET_BITMAP(r.redis_key, r.redis_field);
if (bitmap != null)
{
r = __ocrExecute(r, bitmap, redis);
}
}
catch (Exception ex)
{
if (r != null)
{
string error = ex.Message + Environment.NewLine + ex.StackTrace
+ Environment.NewLine + "----------------" + Environment.NewLine +
JsonConvert.SerializeObject(r);
r.ok = -1;
redis.HSET("_OCR_REQ_ERR", r.requestId, error);
}
}
if (r != null)
{
redis.HSET("_OCR_REQUEST", r.requestId, JsonConvert.SerializeObject(r, Formatting.Indented));
redis.HSET("_OCR_REQ_LOG", r.requestId, r.ok.ToString());
redis.PUBLISH("__TESSERACT_OUT", r.requestId);
}
}
public static void convertImage2Text_OneOrAllPage(string requestId, COMMANDS cmd, string input, Dictionary <string, object> data)
{
var redis = new RedisBase(new RedisSetting(REDIS_TYPE.ONLY_WRITE, __CONFIG.REDIS_PORT_READ));
long docId = 0;
int page = -1;
string[] a = input.Split('.');
long.TryParse(a[0], out docId);
if (a.Length > 1)
{
int.TryParse(a[1], out page);
}
var ocr_lang = data.Get <string>("ocr_lang", "vie");
var ocr_mode = data.Get <EngineMode>("ocr_mode", EngineMode.Default);
var ocr_level = data.Get <PageIteratorLevel>("ocr_level", PageIteratorLevel.Word);
try
{
if (redis.HEXISTS(docId.ToString(), page.ToString()))
{
var bitmap = redis.HGET_BITMAP(docId, page);
if (bitmap != null)
{
var dic = new Dictionary <string, object>()
{
{ "id", docId },
{ "page", page },
};
using (var engine = new TesseractEngine("tessdata", ocr_lang, ocr_mode))
using (var pix = new BitmapToPixConverter().Convert(bitmap))
{
using (var tes = engine.Process(pix))
{
switch (cmd)
{
case COMMANDS.OCR_TEXT_PAGE:
string s = tes.GetText().Trim();
dic.Add("ocr_text", s);
break;
case COMMANDS.OCR_BOX_PAGE:
var boxes = tes.GetSegmentedRegions(ocr_level).Select(x =>
string.Format("{0}_{1}_{2}_{3}", x.X, x.Y, x.Width, x.Height)).ToArray();
dic.Add("box_format", "x_y_width_height");
dic.Add("box_text", string.Join("|", boxes.Select(x => x.ToString()).ToArray()));
dic.Add("box_count", boxes.Length);
break;
}
}
}
App.Reply(cmd, requestId, input, dic);
}
}
}
catch (Exception exInfo)
{
//string errInfo = cmd.ToString() + " -> " + file + Environment.NewLine + exInfo.Message + Environment.NewLine + exInfo.StackTrace;
//redis.HSET("_ERROR:PDF:" + cmd.ToString(), docId.ToString(), errInfo);
}
}
