private static AzureOcrEngine GetAzureOcrEngine()
{
Console.WriteLine("To OCR process an image with Azure Vision API you need a azure account and access to their vision API.");
Console.WriteLine("Input your Azure Vision API subscription key:");
string subscriptionKey = null;
while (string.IsNullOrWhiteSpace(subscriptionKey))
{
subscriptionKey = Console.ReadLine();
}
Console.WriteLine("Input your Azure endpoint:");
string endpoint = null;
while (string.IsNullOrWhiteSpace(endpoint))
{
endpoint = Console.ReadLine();
}
var ocr = AzureOcrEngine.Build(new AzureVisionConfigurations(subscriptionKey, endpoint));
Console.WriteLine("Azure ocr engine instantiated.");
Console.WriteLine();
return(ocr);
}
static void Main(string[] args)
{
Console.WriteLine("###### OCR Wrapper demo project ######");
GoogleOcrEngine googleOcrEngine = null;
AzureOcrEngine azureOcrEngine = null;
string visionApiChoice = null;
while (true)
{
Console.WriteLine("Input file path:");
var userChoice = Console.ReadLine();
if (userChoice == null || userChoice.ToLower().Equals("q"))
{
return;
}
var imageFormat = GetImageFormat(userChoice);
if (imageFormat == FileFormatEnum.Unsupported)
{
Console.WriteLine("Unsupported file format. Supported types are; jpg, jpeg, png and pdf.");
continue;
}
if (imageFormat == FileFormatEnum.Pdf)
{
PerformAction(DoPdfExtraction(userChoice)).ContinueWith(t => Pause()).Wait();
}
else
{
if (visionApiChoice == null)
{
Console.WriteLine("What vision API do you wish to use, Google or Azure? \nOr you can use an installation of Tranym ocr if you have it installed on this machine. \n(Options: azure, google, transym).");
while (string.IsNullOrWhiteSpace(visionApiChoice) ||
(visionApiChoice != "google" && visionApiChoice != "azure" && visionApiChoice != "transym"))
{
visionApiChoice = Console.ReadLine()?.ToLower();
}
}
if (visionApiChoice == "google")
{
if (googleOcrEngine == null)
{
googleOcrEngine = GetGoogleOcrEngine();
}
PerformAction(DoGoogleOcr(googleOcrEngine, imageFormat, userChoice)).ContinueWith(t => Pause()).Wait();
}
else if (visionApiChoice == "azure")
{
if (azureOcrEngine == null)
{
azureOcrEngine = GetAzureOcrEngine();
}
PerformAction(DoAzureOcr(azureOcrEngine, imageFormat, userChoice)).ContinueWith(t => Pause()).Wait();
}
else if (visionApiChoice == "transym")
{
Console.WriteLine("Do you have a licensed Transym installation on this machine? (y/n)\nOtherwise the ocr will fail.");
var isTransymInstalled = Console.ReadLine()?.ToLower();
if (isTransymInstalled == "y")
{
PerformAction(DoTransymOcr(userChoice)).ContinueWith(t => Pause()).Wait();
}
}
}
}
}
private static async Task <OcrResult> DoAzureOcr(AzureOcrEngine azureOcrEngine, FileFormatEnum fileFormat, string file)
{
return(await azureOcrEngine.OcrImage(file, fileFormat));
}
