Hey,
currently I have a simple program that seems to detect whole sentences
precisely in pictures not as clear but it cannot detect black block letters
on a white background such as the one below.
The code to reproducing the error is below, just provide it the word search.
Output from the program is:
SEDBEWLEE
RTCELEMSU
MNSJARPEPRUARJR
Q
HRDHGTCJFPE
IWCLL
Z
CACQAOZATNT
TJERREEN
GN
DAAVP
RCNYE
SOQ STG
BDSYDGEA
PUHSCFCR
LPZNE
LC
OROYEVRUSO
YPGCUPXHDE
UMTTSSOTTNATNUOCCA
SKCOURTREPORTERKMAL
D
SCJOCKEYWUEAEWOAP
BQGMASYMPYPO
YHXC
As you can see most of it is not precise
#include <leptonica/allheaders.h>
#include "tesseract/baseapi.h"
#include "tesseract/ocrclass.h"
#include <QApplication>
#include <QImage>
#include <QtCore>
#include <iostream>
#include <QString>
#include <string>
class Task : public QObject
{
Q_OBJECT
public:
Task(QObject *parent = 0) : QObject(parent) {}
signals:
void finished();
public slots:
void run()
{
//###########################################
tesseract::TessBaseAPI tess;
QString m_text;
char *text;
int min_conf = 50;
tess.Init(NULL, "eng");
tess.SetPageSegMode(tesseract::PSM_AUTO_OSD);
std::string s;
std::cout << "Enter picture's name to tesser: ";
std::cin >> s;
QImage image(s.c_str());
if (image.isNull())
emit finished();
image = image.convertToFormat(QImage::Format_Grayscale8);
tess.SetImage(image.bits(), image.width(), image.height(), 1, image.
bytesPerLine());
tess.SetSourceResolution(300);
tess.DetectOS(0);
Boxa* boxes = tess.GetComponentImages(tesseract::RIL_BLOCK, true,
NULL, NULL);
for (int i = 0; i < boxes->n; i++) {
BOX* box = boxaGetBox(boxes, i, L_CLONE);
tess.SetRectangle(box->x, box->y, box->w, box->h);
text = tess.GetUTF8Text();
if (tess.MeanTextConf() > min_conf)
m_text.append(text);
}
std::cout << m_text.toStdString() << std::endl;
//###################################################
emit finished();
}
};
#include "main.moc"
int main(int argc, char *argv[])
{
QCoreApplication a(argc, argv);
// Task parented to the application so that it
// will be deleted by the application.
Task *task = new Task(&a);
// This will cause the application to exit when
// the task signals finished.
QObject::connect(task, SIGNAL(finished()), &a, SLOT(quit()));
// This will run the task from the application event loop.
QTimer::singleShot(0, task, SLOT(run()));
return a.exec();
}
Enter code here...
<https://lh3.googleusercontent.com/-LpaGzyC0hoI/VrkGhaJ5wXI/AAAAAAAAABc/FRicRSe-bDE/s1600/careers.png>
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