private async Task <GoogleOcrResult> DoOcr(Stream imageAsStream, FileFormatEnum fileFormatEnum, DateTime start)
{
try
{
var preprocessedResult = _ocrPreProcessing.AjustOrientationAndSize(imageAsStream, fileFormatEnum);
using (var stream = preprocessedResult.ImageFileStream)
{
var builder = new ImageAnnotatorClientBuilder {
JsonCredentials = File.ReadAllText(_configurations.CredentialsJsonFile)
};
var client = await builder.BuildAsync();
var img = await Image.FromStreamAsync(stream);
var textAnnotations = await client.DetectTextAsync(img);
var rawGoogleOcrResult = RawGoogleOcrResult.CreateFrom(textAnnotations.ToList());
var content = _googleOcrParser.Execute(rawGoogleOcrResult, preprocessedResult.NewImageHeight,
preprocessedResult.NewImageWidth);
return(GoogleOcrResult.CreateSuccessResult(DateTime.Now.Subtract(start), content, rawGoogleOcrResult));
}
}
catch (Exception e)
{
return(GoogleOcrResult.CreateErrorResult(DateTime.Now.Subtract(start), e));
}
}
public override async Task SetupAsync()
{
byte[] data = Convert.FromBase64String(Environment.GetEnvironmentVariable("GOOGLE_SERVICE_CREDENTIALS_B64",
EnvironmentVariableTarget.Process));
var builder = new ImageAnnotatorClientBuilder
{
CredentialsPath = null,
JsonCredentials = Encoding.UTF8.GetString(data)
};
AnnotatorClient = await builder.BuildAsync();
}
