Rotular imagem

Inicie uma tarefa de rotulagem de imagens.

Páginas de documentação que incluem esta amostra de código

Para visualizar o exemplo de código usado em contexto, consulte a seguinte documentação:

Amostra de código

Java

Antes de tentar essa amostra, siga as instruções de configuração do Java no Guia de início rápido do Data Labeling Service usando bibliotecas de cliente. Para mais informações, consulte a documentação de referência da API Data Labeling Service Java.

import com.google.api.gax.longrunning.OperationFuture;
import com.google.cloud.datalabeling.v1beta1.AnnotatedDataset;
import com.google.cloud.datalabeling.v1beta1.DataLabelingServiceClient;
import com.google.cloud.datalabeling.v1beta1.DataLabelingServiceSettings;
import com.google.cloud.datalabeling.v1beta1.HumanAnnotationConfig;
import com.google.cloud.datalabeling.v1beta1.ImageClassificationConfig;
import com.google.cloud.datalabeling.v1beta1.LabelImageRequest;
import com.google.cloud.datalabeling.v1beta1.LabelImageRequest.Feature;
import com.google.cloud.datalabeling.v1beta1.LabelOperationMetadata;
import com.google.cloud.datalabeling.v1beta1.StringAggregationType;
import java.io.IOException;
import java.util.concurrent.ExecutionException;

class LabelImage {

  // Start an Image Labeling Task
  static void labelImage(
      String formattedInstructionName,
      String formattedAnnotationSpecSetName,
      String formattedDatasetName)
      throws IOException {
    // String formattedInstructionName = DataLabelingServiceClient.formatInstructionName(
    //      "YOUR_PROJECT_ID", "YOUR_INSTRUCTION_UUID");
    // String formattedAnnotationSpecSetName =
    //     DataLabelingServiceClient.formatAnnotationSpecSetName(
    //         "YOUR_PROJECT_ID", "YOUR_ANNOTATION_SPEC_SET_UUID");
    // String formattedDatasetName = DataLabelingServiceClient.formatDatasetName(
    //      "YOUR_PROJECT_ID", "YOUR_DATASET_UUID");

    DataLabelingServiceSettings settings =
        DataLabelingServiceSettings.newBuilder()
            .build();
    try (DataLabelingServiceClient dataLabelingServiceClient =
        DataLabelingServiceClient.create(settings)) {
      HumanAnnotationConfig humanAnnotationConfig =
          HumanAnnotationConfig.newBuilder()
              .setAnnotatedDatasetDisplayName("annotated_displayname")
              .setAnnotatedDatasetDescription("annotated_description")
              .setInstruction(formattedInstructionName)
              .build();

      ImageClassificationConfig imageClassificationConfig =
          ImageClassificationConfig.newBuilder()
              .setAllowMultiLabel(true)
              .setAnswerAggregationType(StringAggregationType.MAJORITY_VOTE)
              .setAnnotationSpecSet(formattedAnnotationSpecSetName)
              .build();

      LabelImageRequest labelImageRequest =
          LabelImageRequest.newBuilder()
              .setParent(formattedDatasetName)
              .setBasicConfig(humanAnnotationConfig)
              .setImageClassificationConfig(imageClassificationConfig)
              .setFeature(Feature.CLASSIFICATION)
              .build();

      OperationFuture<AnnotatedDataset, LabelOperationMetadata> operation =
          dataLabelingServiceClient.labelImageAsync(labelImageRequest);

      // You'll want to save this for later to retrieve your completed operation.
      System.out.format("Operation Name: %s\n", operation.getName());

      // Cancel the operation to avoid charges when testing.
      dataLabelingServiceClient.getOperationsClient().cancelOperation(operation.getName());

    } catch (IOException | InterruptedException | ExecutionException e) {
      e.printStackTrace();
    }
  }
}

Python

Antes de tentar essa amostra, siga as instruções de configuração do Python no Guia de início rápido do Data Labeling Service usando bibliotecas de cliente. Para mais informações, consulte a documentação de referência da API Data Labeling Service Python.

def label_image(
    dataset_resource_name, instruction_resource_name, annotation_spec_set_resource_name
):
    """Labels an image dataset."""
    from google.cloud import datalabeling_v1beta1 as datalabeling

    client = datalabeling.DataLabelingServiceClient()

    basic_config = datalabeling.HumanAnnotationConfig(
        instruction=instruction_resource_name,
        annotated_dataset_display_name="YOUR_ANNOTATED_DATASET_DISPLAY_NAME",
        label_group="YOUR_LABEL_GROUP",
        replica_count=1,
    )

    feature = datalabeling.LabelImageRequest.Feature.CLASSIFICATION

    # annotation_spec_set_resource_name needs to be created beforehand.
    # See the examples in the following:
    # https://cloud.google.com/ai-platform/data-labeling/docs/label-sets
    config = datalabeling.ImageClassificationConfig(
        annotation_spec_set=annotation_spec_set_resource_name,
        allow_multi_label=False,
        answer_aggregation_type=datalabeling.StringAggregationType.MAJORITY_VOTE,
    )

    response = client.label_image(
        request={
            "parent": dataset_resource_name,
            "basic_config": basic_config,
            "feature": feature,
            "image_classification_config": config,
        }
    )

    print("Label_image operation name: {}".format(response.operation.name))
    return response