public VisionClassifier(Configuration config, ILoggerFactory loggerFactory)
{
this.config = config;
this.log = loggerFactory.CreateLogger <VisionClassifier>();
SslCredentials sslCred = new Grpc.Core.SslCredentials();
var chn = GrpcChannel.ForAddress(endpointAddress, new GrpcChannelOptions {
LoggerFactory = loggerFactory
});
visionClassifierClient = new VisionService.VisionServiceClient(chn);
String outDirectoryPath = Path.Combine(AppContext.BaseDirectory, ClassifyTaskHelper.GetTimestamp(DateTime.Now));
this.outDirectory = Directory.CreateDirectory(outDirectoryPath);
this.log.LogInformation($"output directory created: {outDirectoryPath}");
}
public async Task <AnalyzeResult[]> RecognizeText(string folderId,
string iamToken,
Stream image,
string[] languages)
{
var channel = new Channel("vision.api.cloud.yandex.net", 443, new SslCredentials());
var client = new VisionService.VisionServiceClient(channel);
var request = new BatchAnalyzeRequest
{
FolderId = folderId,
AnalyzeSpecs =
{
new AnalyzeSpec
{
Content = await ByteString.FromStreamAsync(image),
Features =
{
new Feature
{
Type = Feature.Types.Type.TextDetection,
TextDetectionConfig = new FeatureTextDetectionConfig
{
LanguageCodes =
{
languages
}
}
}
}
}
}
};
var headers = new Metadata
{
{
"Authorization", "Bearer " + iamToken
}
};
var response = await client.BatchAnalyzeAsync(request, headers).ResponseAsync;
return(response.Results
.Select(ConvertAnalyzeResult)
.ToArray());
}
