Tesseract给出错误的结果c ++

Question

您好我使用的是tesseract 3.02.02，它为非常清晰的图像提供了错误的结果。

示例图片：

代码：

tesseract::TessBaseAPI *myOCR = new tesseract::TessBaseAPI();
cout<< myOCR->Version() <<endl;
cout<< getLeptonicaVersion() <<endl;

if (myOCR->Init(NULL, "eng")) {
   qDebug()<< "Could not initialize tesseract";
}

myOCR->SetVariable("tessedit_char_whitelist","0123456789");
tesseract::PageSegMode pagesegmode = static_cast<tesseract::PageSegMode>(10); // treat the image as a single character
myOCR->SetPageSegMode(pagesegmode);

Mat imm = imread("/home/de/Desktop/0.png");
cvtColor(imm,imm,CV_BGR2GRAY);
threshold(imm, imm, 0, 255, CV_THRESH_BINARY | CV_THRESH_OTSU);
imm = ~imm;
common::deleteBorderObjects(&imm);
imm = ~imm;

Pix *pixx = mat8ToPix(&imm);//convert Mat to pix

myOCR->SetImage(pixx);
const char *text1 = myOCR->GetUTF8Text();

结果是1。

我认为图像非常清晰。

这是什么问题？是关于tesseract参数吗？

Answer 1

尝试在我的机器上进行额外处理。结果是0。

string currentPage = Browser.Current.Url;
string userPath = Environment.GetFolderPath(Environment.SpecialFolder.UserProfile);
string downloadPath = Path.Combine(userPath, "Downloads");

DirectoryInfo dirInfo = new DirectoryInfo(downloadPath);

if (!dirInfo.Exists)
{
     dirInfo.Create();
}

int directoryFiles = dirInfo.EnumerateFiles().Count();

string elementXpath = "//div[@id='myDiv']/div/div/div[@class='atalhos']/a[1]";

bool isFirefox = (Browser.Current as FirefoxDriver) != null;
bool isChrome = (Browser.Current as ChromeDriver) != null;

IWebDriver browserDriver = null;

if (isChrome)
{
    ChromeOptions chromeOptions = new ChromeOptions();
    chromeOptions.AddUserProfilePreference("download.default_directory", downloadPath);
    chromeOptions.AddUserProfilePreference("disable-popup-blocking", "true");

    browserDriver = new ChromeDriver(chromeOptions);
}
else if (isFirefox)
{               
    FirefoxProfile profile = new FirefoxProfile();                
    profile.SetPreference("browser.download.folderList", 2);                
    profile.SetPreference("browser.helperApps.neverAsk.saveToDisk", "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");

    browserDriver = new FirefoxDriver(profile);
}

browserDriver.Navigate().GoToUrl(currentPage);

WebDriverWait wait = new WebDriverWait(browserDriver, TimeSpan.FromSeconds(15));
wait.Until(ExpectedConditions.ElementIsVisible(By.XPath(elementXpath)));

IWebElement elemento = browserDriver.FindElement(By.XPath(elementXpath));

elemento.Click();

Thread.Sleep(7000);

dirInfo = new DirectoryInfo(downloadPath);

int currentFiles = dirInfo.EnumerateFiles().Count();

Assert.Greater(currentFiles, directoryFiles);

尝试在将图像输入tesseract之前查看图像。